Resumo em Inglês:

I. This paper deals with an experiment carried out to evaluate the effect of the sugar cane upper end on the composition of the sugar cane harvest as a raw material for the sugar industry. The variety studied was Co 421. The authors intend to study other varieties in the future. The data were collected from plant cane, at intervals of two weeks, always from the same field, from a small central area of 3.000 square meters approximately. Sixty (60) stalks were cut in each occasion, randomly chosen from the whole area. They were afterwards separated into three groups of 20 stalks, one for each of the treatments, namely: a) Complete stalks, with no leaves or sheaths. b) Stalks harvested by the technique of REYNOSO, that is, as usually done in practice. c) Stalks with the tops completely cut out, that is, cut by technique of REYNOSO and then with 3 other top internodes eliminated. The treatments caused significant differences on the following technological characteristics: a) Weight b) Cane pol c) Available sucrose (pol) per cent cane d) Cane juice pol e) Saline coefficient of juice. II. Except for weight, all changes were favorable to treatment c, even if with differences relatively slight, in percentage. IIII. Treatment differences for cane fiber, brix, reducing sugars, juice ashes, coefficient of purity and glucose coefficient were not significant. IV. Time of harvest was an important factor affecting the composition of the cane and of the juice. V. On the average the available sucrose of cane for treatments, with an standard error of 0.13%, was: Treatment c 13.05% Treatment b 12.65% Treatment a 12.53% This shows that there is no sound basis for the heavy fines applied by some sugar mills to planters who do not cut low enough the tops of the cane stalks.

Resumo em Inglês:

This paper deals with the genetic interaction of Yl Y3 Y7 in producing yellow endosperm in maize. The new data presented are in accordance with preliminary notes on the same subject. The recessive yl, y3 and y7produce respectively green plants, albescent plants and white seedlings.

Resumo em Inglês:

This paper deals with different types of fertilizer applications in coffee hill in the moment of transfering the plants to the field. During the first year, irrigation was applied in the dry season. After one year, the following characters were analised: plant height; plant diameter; number of productive branches; lenght and number of nodes in the first branch of the plant. The results obtained can be summarized as follows: the irrigation employed did not affect the treatments and mineral fertilizers combined with organic fertilizer were better than the others treatments used for comparisons.

Resumo em Inglês:

This paper deals with data obtained in 1959 and 1960 in shaded and unshaded coffee plots at Piracicaba, São Paulo, Brazil. The results can be summarized as follows: a) the production, in shaded and unshaded plots, did not show differences statisticaly significant; b) the percentage of coffee berry borer infestation was higher in shaded plots as compared with unshaded ones; c) the percentage of green, ripened and dry fruits depends of the year and of the harvest time. In the same harvest time, both for shaded and for unshaded plots the percentages in the shaded plots were higher for green fruits and lesser for ripened and dry fruits; d) coffee fruits brought from the field in the harvest time yielding up in unshaded plots as compared with shaded ones; e) the relation grains/dry fruits was better in shaded plots.

Resumo em Português:

1. No presente trabalho procurou-se analisar a influência das épocas de semeadura sôbre diversos caracteres de algumas variedades de arroz. 2. Dez foram as variedades utilizadas a saber: Batatais, Dourado Agulha n.° 2, Iguape Agulha, Pérola, Pratão, Quatro Meses, cultivadas em nosso meio, e Rizzotto, Sésia, Razza - 77, e 227 - Sésia x R. B., variedades italianas. As épocas, em número de cinco, foram estabelecidas quinzenalmente a partir do dia primeiro de outubro do ano de 1959. O experimento, realizado em quadra irrigada, foi planejado em blocos ao acaso, cada época representada por três blocos que constituíram as repetições, contendo cada um dêles as dez variedades de arroz já mencionadas. 3. Foram submetidos à análise estatística os seguintes caracteres: florescimento, maturação, altura, produção de grãos, produção de palha, pêso de mil espiguetas, pêso de mil grãos beneficiados, rendimento total e rendimento em grãos inteiros. 4. Os resultados obtidos, para cada um dos caracteres analisados separadamente, encontram-se no capítulo 3. 5. Com exceção do rendimento total no beneficiamento, os demais caracteres mostraram variações devidas às épocas, concluindo-se assim que as épocas de semeadura influíram no comportamento das variedades estudadas e que a variedade Batatais, por apresentar um comportamento bastante uniforme para produção de grãos, em tôdas as épocas, revelou-se a mais indicada para semeadura tardia.

Resumo em Inglês:

1 - This paper deals with comparisons of rice varieties (four introduced from Italy and six cultivated in Brazil). The sowings were made in wet conditions and in five different periods of time. 2 - Statisticals analyses were made with data from the bloomering and maturation period, plant height, grain, leaves and steams productions, weight of thousand of spikelets, total milling and milled gradding results. 3 - The results can be summarized as follows: with exception of the total milling result, the other characterists showed significant statistical variations among periods of time of sowing for all varieties studied. The Batatais variety was precocious and showed great uniformity, being recommended for later sowing.

Resumo em Português:

Do estudo pormenorizado que fizemos em tão copioso material, assinalamos a presença de domácias em 42 espécies distintas, distribuidas entre 28 famílias pertencentes às Angiospermas. Cumpre salientar que registramos a ocorrência desses pequeninos órgãos nas fôlhas, tanto de árvores e arbustos, como de trepadeiras e plantas de pequeno porte. As domácias foram assinaladas não só na inserção das nervuras de 1.ª e 2.ª ordem, que é o caso mais comum, como também sôbre a nervura principal e na superfície do limbo, bem próximo aos bordos da fôlha, constituindo nesse último caso, novos tipos por nós discutidos em trabalho à parte. Registramos, pela primeira vêz, mais 17 famílias novas entre as plantas acarófilas. Relacionamos por ordem alfabética as famílias cujas espécies apresentavam domácias, assim como os nomes das plantas, o tipo e localização das domácias, etc., empregando a Classificação de CHEVALIER E CHESNAIS (1941). Os tipos de domácias catalogados distribuim-se entre as famílias da seguinte maneira: a) Domácias em "tufo de pêlos" - encontradas em plantas das seguintes famílias: Anacardiaceae, Apocynaceae, Bignoniaceae, Caricaceae, Caryocaraceae, Dilleniaceae, Euphorbiaceae, Juglandaceae, Leguminosae, Meliaceae, Nyctaginaceae, Onagraceae, Oxalidaceae, Phytolacaceae, Rhamnaceae, Sapindaceae, Saxifragaceae e Verbenaceae. b) Domácias "em fenda" - encontradas nas famílias: Lauraceae, Marcgraviaceae e Meliaceae. c) Domácias "em bolsa" - registradas nas seguintes famílias: Amaranthaceae, Anonaceae, Bignoniaceae, Labiatae, Lauraceae, Leguminosae, Lythraceae, Moraceae, Nyctaginaceae e Vitaceae. d) Alguns tipos de domácias - encontrados nas famílias: Anacardiaceae, Onagraceae, Oxalidaceae, Apocynaceae, Caricaceae, Euphorbiaceae, Marcgraviaceae, Meliaceae e Leguminosae.

Resumo em Inglês:

The present paper deals with the ocurrency of domatia in 42 differents species, distributed among 28 families of An-giospermae. The domatia were found in trees or shrubs, climbing plants and in strong climbing plants, these domatia were generally situated in the base of the nervure of lrst and 2nd order, that is the common case although they may occure also on the main nervure and on the blade, very close to the border of the leaf The author have found 17 families with domatia, not yet known. The catalogued domatia types are distributed among the families as follows: a) Domatia in "aglomerate hairs" - found in plants of the following families: Anacardiaceae, Apocynaceae, Bignoniaceae, Caricaceae, Caryocaraceae, Dilleniaceae, Euphorbiaceae, Juglandaceae, Léguminosae, Meliaceae, Nyctaginaceae, Onagraceae, Oxalidaceae, Phytolacaceae, Rhamnaceae, Sapindaceae, Saxifragaceae e Verbenaceae. b) Domatia in "chaps shaped" - found in the following families: Lauraceae, Marcgraviaceae, e Meliaceae. c) Domatia in "purses" - found in the following families: Amaranthaceae, Anonaceae, Bignoniaceae, Labiatae, Lauraceae, Leguminosae, Lythraceae, Moraceae, Nyctaginaceae e Vitaceae. d) Some new types of domatia found in the following families: Anacardiaceae, Onagraceae, Oxalidaceae, Apocynaceae, Caricaceae, Euphorbiaceae, Marcgraviaceae, Meliaceae

Resumo em Português:

O presente trabalho versa sobre alguns tipos novos de domácia encontrados em 10 espécies de 10 gêneros, distribuídos por entre 9famílias, e que apresentam variações na forma e localização. As domácias foram encontradas na face inferior das folhas e folíolos, com excessão de Oxalis sp. que se situam na face superior, bem na região de sua inserção com o pecíolo. Os tipos de domácias estudados podem ser assim caracterizados: a) Em "tufo de pêlos" variando quanto à localização: 1. Nos folíolos de Schinus terebinthifolius Raddi, ladeando as nervuras de 2.ª ordem. 2. Nas folhas de Bauhinia forficata Link., na base das nervuras que se irradiam das glândulas. 3. Nas folhas de Hura crepitans L., ladeando os primeiros pares de nervuras secundárias, a partir da base. 4. Nas folhas de Jacaratia dodecaphylla A. DC. formando um anel pelífero na região de inserção dos folíolos. 5. Nas folhas de Plumeria lutea R. P., formando uma fileira de pêlos em ambos os lados da nervura principal. 6. Nas folhas de Fuchsia integrifolia Camb., ladeando a nervura principal até 1/3 de seu comprimento. 7. Nas folhas de Oxalis sp. formando um pincel na região de encontro dos folíolos com o pecíolo. b) Em "fenda", com bordos peliferos e nova localização: 1. Nas folhas de Cedrela mexicana Roem., localizando-se geralmente na axila do 3.° par de nervuras secundárias, ora à esquerda e ora à direita. 2. Em Norantea brasiliensis Choisy., as domácias são pequenas, em grande número, distribuindo-se pela área do limbo, ao longo dos bordos da folha, em duas fileiras ar-queadas. c) Em forma de "cavidades": 1. Na base dos folíolos de Schinus terebinthifolius Raddi. d) Variando quanto à forma e localização: 1. Em Lithraea molleoides Engl., aparecendo como novo tipo de domácia, formada pela curvatura dos ápices das asas do pecíolo na face ventral, originando duas pequenas câmaras conchóides, uma de cada lado. e) Sobre a nervura principal: 1. Nas folhas de Cedrela mexicana Roem, ao longo da nervura principal ocorrem domácias em forma de cavidades razas.

Resumo em Inglês:

This paper deals with 10 types considered new, belonging to 10 distinct specie of domatia and distributed among 9 families of the Angiospermae group, differing in their shape and point of occurrence from the commonly known types. Their characterization is given as follows: A) With agglomerate hairs appearence, occurring in different points on leaves of Schinus terebenthifolius Raddi, Bauhinia forficata Link., Hura crepitans L., Jacaratia dode-caphylla A. DC, Plumeria lutea R. P., Fuchsia integrifolia Camb. e Oxalis sp. B) Chap shaped, with downy margin and new localization on the leaves of Cedrella mexicana Roem. and Norantea brasiliensis Choisy. C) Cavities shaped, found on the leaves of Schinus terebinthifolius Raddi. D) Varying in shape and localization, found on the leaves of Lithraea molleoides Engl. E) It's found on the main nervure on the leaves of Cedrella mexicana Roem. The author really considers new types of domatia presented in this work attending the following particularities for the shape, size, constitution and points of occurrence.

Resumo em Inglês:

Young coffee plants (Coffea arabica L., var. Mundo Novo) were grown in nutrient solution purified from micronutrients contaminants by the method of MUNNS & JOHNSON (1960). All plants, except those in the control treatment, wer given all macronutrients and all micronutrients except one which was omitted in order to induce its shortage. Symptoms of deficiency were obtained for all known micronutrients but chlorine. Measurements, observations and chemical analysis of leaves allowed the following main conclusions to be drawn. 1. The relative influence of micronutrients in growth-measured by the fresh weight of the entire plant - was as follows: -Fe -Zn -Cu -Mo -Mn complete = -B = -CI. that is: the omission of iron from the nutrient solution caused the severest reduction in growth; lack of B and Cl had no effect. 2. Symptoms of deficiency of B, Fe, Mn, and Zn were found to be in good agreement with those in the literature. Effects of Cu and Mo shortage, however, had not been described so far: In the case of the Cu-deficient plants, the younger leaves were distorted, having an "S" shape, due probably to lack of growth of the veins; they lost their green color and developed rather large, necrotic patches near the margins. When molybdenum was omitted from the nutrient solution yellow spots develop near the margen of subterminal (fully mature) leaves; they became necrotic; there was a characteristic downward curling of the leaf blade along the mid rib so that the opposite edges touched each other underneath. 3. The levels of micronutrients found in normal and deficient leaves are given in Table 4. It is hoped that those values will serve as a basis of judgement of micronutrient contents found in leaves of field grown plants.

Resumo em Português:

Com a finalidade de se conhecer a distribuição de S35 em cafeeiro, o presente experimento foi conduzido em casa de vegetação e em campo. No primeiro caso "plantinhas" de café, de 6 meses de idade foram mantidas em solução nutritiva e receberam: a) S35 na superfície inferior das fôlhas do 3.° par; b) S35 na solução. No ensaio (a), as "plantinhas" foram divididas em suas partes constituintes (raízes, caule, fôlhas novas e fôlhas velhas), sendo que as fôlhas foram subdivididas em pecíolo, limbo e nervuras. O ensaio (b) era formado por 3 grupos de "plantinhas": - 1) estudo da migração, como em (a); 2) autoradiografia; 3) verificação da lavagem de S35 das fôlhas, sob chuva artificial. No experimento conduzido em campo utilizamos cafeeiros de 4 anos de idade e o enxofre radioativo foi fornecido por pulverização foliar. Os resultados demonstram a pouca mobilidade do enxofre pela planta e que: 1) o S35 migra das fôlhas velhas principalmente para as fôlhas novas e muito pouco para as raízes; 2) das raízes o S35 se distribui para os demais órgãos da planta, concentrando-se principalmente nas fôlhas mais velhas; 3) os dados obtidos pela detecção da radioatividade nas várias partes da planta foram corroborados pela autoradiografia; 4) o enxofre é lavado das fôlhas pela água das chuvas.

Resumo em Inglês:

This work was carried out in order to study the distribution of S35 in higher plants, represented in this case by coffee (Coffea arabica L., var. Bourbon). Young coffee plants 6 months old were grown in the greenhouse in nutrient solution and received: a) solution of S35 brushed inthe lower surfaces of selected leaves; b) solution of S35 in nutrient solution in order to be absorbed by roots. In (a) procedure the plants were divided in their parts: roots, stms, young leaves and old leaves, and the leaves were divided in petiole, blade and midrib and veins. In (b) procedure, we had three groups of plants for: 1) studies of translocation, like in (a); 2) radioautography; 3) study of leaching of S35 from leaves. On the other hand, in the field experiment, 4 years old coffee plants received S35 that has been sprayed directly on the leaves. The analysis showed a short translocation of S35 in the coffee plant and: 1) the S35 translocation is mainly from old leaves to newer leaves and very few to the stem and roots; 2) from roots the S35 gets to the other parts of the plant to the old leaves; 3) the autoradiografhy of the coffee plant showed the same results obtained with the analysis of radioactivity in the various parts of the plant; 4) S35 is leached from leaves by rainfall.

Resumo em Inglês:

This paper deals with the mineral composition fresh and dry matter production of different organs of 4, 5 old guava (Psidium guajava L.) growth on sandy soil (Savanna) without fertilizer. The data obtained for fresh and dry matter productior are present in table 2 (in Portuguese). The concentration of the elements are presented in table 3 (in Portuguese). Finally, the total amounts of elements absorbed by guava are given in the following table: Element Plant (grams) Fruits (grams) Nitrogen (N) 42,55 20,4 Phosphorus (P) 3,84 2,3 Potassium (K) 52,01 31,3 Calcium (Ca) 47,81 0,2 Magnesium (Mg) — 2,4

Resumo em Inglês:

In order to study the phosphorus availability from various phosphates fertilizers an experiment was performed according to the biological seedling method of Neubauer. The physico-chemical properties of the soil "terra roxa-misturada", a red soil derived from basaltic rocks are given in the Portuguese text. Rice (Oryza sativa, L.) instead of rye (Secale cereale, L.) was used. Five replications of each of the following treatments were made: 1 - check, with 350 g of sand 2 - 350 g of sand plus 100 g of soil 3 - 350 g of sand and plus 100 g of soil plus 40 mg of P2O5, from superphosphate. 4 - 350 g of sand plus 100 g of soil plus 40 mg of P2O5. from Olinda (Brazil) phosphorite. 5 - 350 g of sand plus 100 g of soil plus 40 mg of P2O5 from Florida (U. S. A.) phosphorite. 6 - 350 g os sand plus 100 g of soil plus 40 mg of P2O5 from Hyperphosphate, a commertial name of a North African (Gafsa) phosphorite. 7 - 350 g of sand plus 100 g of soil plus 40 mg of P2O5 from Araxá (Brazil) apatite. After 18 days of growth, the roots and tops of rice seedlings were harvested and analysed for phosphorus, and the results are summarized in table 1. Table 1 - Milligrams of P2O5 determined in rice seedlings. Treatments Mean of 5 replications mg of P2O5 1 ..................... 24.196 2 ..................... 23.850 3 ..................... 30.724 4 ..................... 27.620 5 ..................... 27.480 6..................... 30.210 7 ..................... 26.032 The least significant difference at the 5% level by Tukey's procedure for comparisons among the treatments means is 1.365 mg of P(2)0. It is interesting to observe that rice plants did not take any phosphorus from the soil according to he data of the treatments n.° 1 and n.° 2. This can be explained by the high phosphorus fixing capacity of the soil "terra roxa misturada".

Resumo em Inglês:

The author studied the application of chick's feces from battery brooder in the feeding of weaning pigs. He employed a basal ration and substituted 5%, 10% and 15% of that basal ration with similar proportions of chicks' feces. He did not observe statistical significance among the treatments. The results measured in terms of average daily gain and feed conversion indicated that the substitution of 5% to 10% by equal proportions of chicks' feces produced satisfactory results, the 5% proportion being the most advantageous.

Resumo em Inglês:

At the 2nd. Department of Zootechny of the E. S. A. L. Q., in Piracicaba, between 1953 and 1955 an experiment of sugar cane varieties was carried out, with the objective of discovering varieties to substitute "Taquara" (the variety most widely used) and Co 290 (the most recommended). The former was condemned as being too susceptible to cane smut and the latter showes signs if degeneracy. In the experiment, 8 varieties were used with 3 replications in randomized blocks, in 3 rows each. The cane was crop not in the same period, but when they were at comparable ripeness (70 cm of apparent culm). They were crop twice during the year, with a sharp hoe near the soil. The summary of the results and the statistical analyses are shown in tables 1 to 3, showing the possibility of there being 3 groups: A superior one composed of Co 419, a median one, in decreasing order of production, composed of Kassoer, CB 40-69. Co 413, IAC 36-25 and POJ 161 and an inferior group composed of Co 290 and Taquara. There is a possibility that POJ 161 belongs to the last group. Nevertheless, this variety is not recommend because of its susceptibility to smut. As Kassoer is more healthy, vigorous and enduring than Co 419 and other varieties, it is shown recommendable. IAC 36-25 is being recommended presently for forage since its productions is lower than Kassoer, placing 5th productivity, although statistical significance was not detected. As our final conclusions, Co 419, Kassoer, CB 40-69, Co 413 and IAC 36-25 can be planted as forage while POJ 161, Co 290 and Taquara should not. The last two were exactly those used as forage reserve in the 2nd. Department at the beginning of the experiment.

Resumo em Inglês:

The author studied the size variation in pollen grains of species in Compositae, Myrtaceae and Leguminoseae (Caesal-pinoideae and Papilionoideae) comparing pollen with and without acetolysis treatment. Pollen grains showed different reactions to the same treatment, according to the diferent species of same family. The increase in size of pollen grains was directional and did not affect their shape.

Resumo em Inglês:

Diseased plants of artichoke (Cynara scolimus L.) from the Instituto Agronômico, Campinas, Brazil, harboured nematodes in the leaves. The nematodes proved to belong to the species Protorhabditis oxyuris (Claus, 1862) Dougherty, 1955. As it could not be charged as the primary agent of the disease, a study of the bacteria found in the material was made. This disclosed that 4 different bacterial forms were present, namely Bacillus subtilis, Bacterium udum, Xanthomonas beticola var. cynarae n. var., and Cory neb acterium fascians var. cynarae n. var. The typical forms of X. beticola and of C. fascians are known as pathogenic to a number of plants: but, in the present case, unfortunately no inoculation trial could be made as an attempt to clear up the possible pathogenicity of any of them also to Cynara scolimus. The nematode P. oxyuris is the secondary agent, which however possibly play an important part in the distribution of the bacteria, as it has been repeatedly pointed out by previous writers with reference to closely related species. The symptoms of the disease are described. The main injuries found on leaves were necrotic areas progressing from the distal part of the limb, resulting in a great reduction of the leaf superficies.

Resumo em Português:

Células de Saccharomyces carlsbergensis (IZ-1834) foram crescidas e adaptadas, progressivamente ao meio de caldo de cana esterilizado e contendo 0,001%, 0,002%, 0,003%, 0,004% e 0,00% de emulsan Al (v/v) além do tratamento testemunho isento de Emulsan Al. Estas células, levadas a Warburg fermentaram: glicose, rafinose. Não fermentaram: galactose, maltose e lactose. Não exibiram praticamente fermentação endógena. Glicose e caldo de cana tiveram seus rendimentos elevados, no caso das células utilizadas serem aquelas adaptadas aos diferentes teores de Emulsan Al. A fermentação da rafinose sofreu notável aceleração quando as células utilizadas foram adaptadas à Emulsan Al, sendo que a aceleração foi da ordem de 2 a 3 vêzes àquela observada no experimento com células crescidas em meio isento de Emulsan Al. A diferença da permeabilidade entre um e outro tipo de célula parece explicar o fenômeno.

Resumo em Inglês:

Cells of Saccharomyces carlsbergensis, (IZ-273) were grow in esterilized sugar cane juice medium whith 0, 0,001%, 0,002%, 0,003% e 0,005% of Emulsan Al. In Warburg apparatus the yeast cells fermented: glucose, sugar cane juice, sucrose and rafinose, and did not ferment: galactose, maltose and lactose. These showed a very slow endogenous fermentation. For glucose and sugar cane juice the cells from medium with Emulsan Al demonstrated a considerable yeld. The rate of fermentation of rafinose was strongly increased with cells from the medium with Emulsan Al (2 - 3 times faster).

Resumo em Português:

Células de 5. carlsbergensis crescidas em meio de cultura DPE diferenciados apenas em sua principal fonte de carbono (glicose, galactose e maltose) tiveram diferentes comportamentos quando postas a fermentar glicose, galactose, maltose e rafinose, em manômetro de Warburg. Presume-se que sejam enzimas constitutivos para o citado microorganismo, sacarase e hexoquinase e enzimas adaptativos, maltase, alfa-galactosidase e galactowaldenase.

Resumo em Inglês:

Cells of Saccharomyces carlsbergensis growing in medium DPE and with glucose, or galactose, or maltose have different fermenting capacities for galactose, maltose and raffinose. From these observations we can considered that they have as constitutive enzymes maltase, galactosidase and galactowaldenase.

Resumo em Inglês:

The uptake of potassium fertilizers, namely, KC1, K2S04 and KN03, by beans and coffee leaves was studied in the experiment described herein. The fertilizers were applied as leaf sprays at the rates of 2,25, 4,50 and 9,00 grams, of K20/tree split in 3 applications which were made every week; the proper amount of salts were dissolved in 1 liter of water with wetting agent. Fifteen days after the last application both beans and leaves were sampled for analysis. No leaf injury resulted from the potassium sprays. Leaf -K and bean -K was significantly raised as consequence of the foliar applications of the K- bearing salts.

Resumo em Português:

O presente trabalho relata os dados obtidos, segundo uma modificação do método de Neubauer, comparados aos obtidos pelo método usual do citado autor. A modificação consistiu no uso de cristalizadores menores e no emprêgo de um número de plantas e de um pêso de terra muito menores. Assim, foram colocadas 25 sementes de arroz em 20 g de terra, intimamente misturadas com 40 g de areia de praia lavada, em cristalizadores de 80 mm de diâmetro, por 20 mm de altura. Decorridos 18 dias após a germinação, as plantas foram colhidas, incineradas e o potássio foi determinado por fotômetro de chama. Os resultados foram comparados com os dados obtidos através de um experimento feito com as mesmas amostras de terra e no mesmo tempo, conforme a técnica usual de Neubauer. Praticamente, os dois métodos se equivalem, conforme mostram os dados do quadro 1 em Resultados e Discussão. As principais vantagens do método modificado, em relação ao método usual de Neubauer, podem ser resumidas nas seguintes: redução do pêso da amostra de 100 para 20 g e redução do pêso da areia de praia lavada de 350 para 70 g; redução da área ocupada pelos cristalizadores para menos de um terço; redução do número de plantas para um quarto (de 100 para 25 plantas) e redução do trabalho exigido para a execução do método, desde o preparo dos cristalizadores, até o preparo das plantas, incineração e análise.

Resumo em Inglês:

A MODIFICATION OF THE NEUBAUER'S METHOD This paper reports the data obtained, from a modification of the Neubauer method, as compared to the data obtained from the original one. The modification consistec of using smaller crystallizing dishes, and both a very small number of seedling and weight of soil. Thus, there were seeded 25 rice grains in 20 g of soil, very well mixed with 40 g of beach washed sand, in crystallizing dishes having 8C mm in diameter and 20 mm in height. Eighteen days after germination, the seedling were pulled out, their roots washed dried, ashed and its potassium determined by the flame photometer method. The results were compared with the data obtained from an experiment carried on with the same soil samples, at the same time, according to the usual Neubauer technique. Both methods are practically equivalent, as can be seen from the data on Table I in Results and Conclusions, in the Portuguese text. The main advantages of the modified method over the usual Neubauer method may be summarized as follows: reduction of both the soil sample weight from 100 to 20 g and the washed sand from 350 g to 70 g; the room taken by the crystallizing dishes is less than one third; the number of seedlings is reduced to one forth (from 100 to 25) and it takes less work for the handling of the experiment in all its steps.

Resumo em Inglês:

This paper deals with field investigations on the biology of "saúva parda" (brown parasol ant, Atta capiguara Gonçalves, 1944), performed at Piracicaba and several other counties (State of São Paulo, Brazil). This ant is very noxious to several grasses and seems to make its colony only in very poor soils. Formerly the insect was known only in three counties; the writers found it in other fourteen ones.

Resumo em Inglês:

In 1961, field investigations on "saúva de vidro" (parasol ant, Atta laevigata (Fred. Smith, 1858) were carried out at Piracicaba and other regions of the State of São Paulo (Brazil). This species was found to be a serious pest of cultivated plants, specially Eucalyptus and cotton. The ant makes its colony in any kind of soil, but it prefers to live in the poor ones.

Resumo em Inglês:

In this paper, some notes on "saúva mata pasto" (paraol ant, Atta bisphaerica Forel, 1908) are presented. This ant is very common in good soils and it is a pest of gramineous plants, mainly com, rice, sugar cane, and so son. In poor land it is too difficult or even impossible to ind it.

Resumo em Português:

O presente trabalho foi realizado com o fito de estabelecer uma seleção prévia entre 32 variedaeds de soja (Glycine max. (L.) Merril), com base nas análises bromatológicas das sementes. Foram determinados teores de umidade (U), cinzas (RM), proteína bruta (PB), gordura bruta ou extrato etéreo (EE), fibra bruta (F) e extrativo não nitrogenado (ENN). As análises da variância permitem tirar as seguintes conclusões: 1) Entre as variedades classificadas no grupo forrageiro e comestível, tem-se: Mandarin 8a (40,16% PB), Bicolor de Calai (39,64% PB) e Aliança (38,70% PB). 2) De acordo com a classificação estabelecida, para o grupo produtor de óleo, as variedades Lee, Hood, Lincoln (Blanco) Improved Pelican (2), Lincoln (Morado) e Improved Pelican (1), se destacam com 21,76, 21,65, 21,62, 21,35, 21,13 e 21,04% de EE respectivamente. 3) As variedades que apresentaram menor percentagem de fibra são: Hernónjn.0 107, Hood, Mogiana, Hill e Selection n.° 135, com 9,59; 9,62; 9,68; 10,02 e 10,12% F respectivamente. 4) Encontrou-se uma correlação positiva entre o teor de proteína bruta e o de cinzas.

Resumo em Inglês:

The present work deals with chemical analysis of 32 varieties of soybean (Glycine max. (L.) Merril). Analysis of moisture content, ash content, protein content, oil content and fiber content, were obtained for each variety. The statistical analysis showed the following: 1) For forrage and human consumption, we can consider the varieties: Mandarin 8a, Bicolor de Calai and Aliança. 2) The varieties: Lee, Hood, Lincoln (Blanco), Improved Pelican (2), Lincoln (Morado) and Improved Pelican (1) are the best in oil content. 3) Hernón n.° 107, Hood, Mogiana, Hill and Selection n.° 135 were the ones with less fiber content. 4) In the materials of the present study, we found a positive correlation (r = 0,34*) between protein content and ash content..

Resumo em Português:

No presente trabalho, determinou-se e comparou-se os valores Mi de BARBIER et al., 1954, SCHEFFER e ULRICH, 1958, A de FRIED e DEAN, 1952 Y de LARSEN, 1952, e S de SOKOLOV, 1958, em dois tipos de solo do Estado de São Paulo: terra roxa legítima e um solo arenoso do campo da Secção Técnica de Química Agrícola da Escola Superior de Agricultura "Luiz de Queiroz". Aplicou-se 23,58 mg de fósforo, por vaso, na forma de superfosfato simples, contendo fósforo radioativo com uma atividade de 120.736 ipm; na forma de solução, aplicou-se também 200 mg de NH4N0(3) e 100 mg de KC1. Misturou-se bem para que houvesse homogenização a mais perfeita possível. Depois plantou-se 25 sementes de trigo, variedade 1146BH, deixando-se apenas 16 plantas após o desbaste. Procedeu-se àcolheita 55 dias após o plantio. Tanto a parte aérea como as raízes foram sêcas em estufa a 70-80°C. Sôbre o material triturado, digerido e diluído, retirou-se partes alíquotas para a determinação do P81 e do P32. Os valores obtidos para os dois tipos de solos foram os seguintes: mg de P por 1,5 kg de solo Valores Terra roxa legítima Solo arenoso Mi 177,96 92,62 A 177,55 92,71 Y 178,97 92,98 S 173,42 64,75 A análise estatística não revelou diferença significativa entre os valores Mi, A e Y, mas sim dêstes para o valor S. Quanto a este último valor, pode-se dizer que quanto mais rico em fósforo fôr o solo e quanto menor fôr o teor dêste elemento na semente, quanto mais êle deverá se aproximar dos valores Mi, A e Y.

Resumo em Francês:

Dans le présent travail, les auteurs ont déterminé et comparé les valeurs Mi BARBIER et al 1954 de SCHEFFER e ULRICH, 1958, A de FRIED e DEAN, 1952, Y de LARSEN, 1952 e S de SOKOLOV, 1958, pour deux sols de 1'Etat de São Paulo, Brésil, communément designés sous les noms de: "terra roxa legítima" et "terra arenosa". Les auteurs ont incorporé aux sols un engrais phosphate (superphosphate) marqué au moyen du phosphore radioactif, P32. lis ont aussi incorporé de l'azote et de la potasse. Après avoir cultivé du blé durant 55 jours, à raison de 16 pieds par vase de culture, les auteurs ont dosé la radioactivité et la masse de phosphore contenues dans les parties aériennes et dans les racines. Les valeurs calculées pour les deux sols en étude sont les suivantes: mg de P pour 1,5 kg de sol Valeurs Terra Roxa Legítima Terra Arenosa Mi 177,96 92,62 A 177,55 92,71 Y 178,97 92,98 S 173,42 64,75 L'interpretation de l'analyse statistique n'a revélé aucune difference significative entre les valeurs Mi, A e Y, mais de celles-ci avec la valeurs S. Les résultats ont permis de tirer les deux conclusions suivantes: 1) les valeurs Mi, A e Y, ont la même signification, 2) quand le sol est très riche en phosphore et quand la teneur en phosphore des grains est très basse, la valeur S se trouvera très proche ou égalera les valeurs Mi, A et Y.