Influência do pH e dos teores de fosfato solúvel e matéria orgânica sobre a fixação de zinco pelo solo

Silveira, Ronaldo I.; Mello, F.A.F. de; Sobrinho, M.O.C. do Brasil; Arzolla, S.; Sarruge, J.R.

doi:10.1590/S0071-12761975000100022

Resumos

No presente trabalho os autores apresentam um estudo dos efeitos do pH e dos teores de fosfato solúvel em H2SO4 0,05 N e de matéria orgânica do solo sobre a capacidade de fixação de Zn do mesmo. Na execução do ensaio utilizaram uma técnica traçadora sendo o 65Zn o elemento traçador. Foi concluído que as quantidades de Zn fixadas estão direta e positivamente correlacionadas com o pH, com o teor de fosfato solúvel e de matéria orgânica dos solos.

The purpose of this experiment was to verify the effects of some properties of the soil as pH, and the content of soluble phosphate and organic matter on the soil capacity to fix zinc. Ten grams each of 30 samples of different soils were placed in a 250 ml Erlenmeyer flask and 4 ml of solution containing 100 mg of inert zinc and 0.7 mcof radioactive 65Zn were added. After 20 days of incubation, Zn was extracted with 20 ml of 0.01 M EDTA solution made 1M respect to (NH4)2CO3. An aliquot of 5 ml of the extract was transferred to a test tub and radioactivity of 65 Zn in it was measured with a scintillation counter. Quantity of zinc fixed by the different soils was calculated from the data obtained and county made on the standard solution. It was concluded that the amount of zinc fixed by the soil was positively correlated with pH, soluble phosphate and organic matter content of the soils.

Influência do pH e dos teores de fosfato solúvel e matéria orgânica sobre a fixação de zinco pelo solo^* * Os autores são gratos aos Profs. E. Malavolta e A. Cervellini pelo fornecimento do 6sZn e pela permissão do uso das dependências e aparelhos do CENA, respectivamente.

Effects of pH, soluble phosphate and organic matter on zinc fixation by soil

Ronaldo I. Silveira^I; F.A.F. de Mello^I; M.O.C. do Brasil Sobrinho^I; S. Arzolla^I; J.R. Sarruge^II

^IDepartamento de Solos da E.S.A. "Luiz de Queiroz"

^IIDepartamento de Química da E.S.A. "Luiz de Queiroz"

RESUMO

No presente trabalho os autores apresentam um estudo dos efeitos do pH e dos teores de fosfato solúvel em H2SO4 0,05 N e de matéria orgânica do solo sobre a capacidade de fixação de Zn do mesmo.

Na execução do ensaio utilizaram uma técnica traçadora sendo o ⁶⁵Zn o elemento traçador.

Foi concluído que as quantidades de Zn fixadas estão direta e positivamente correlacionadas com o pH, com o teor de fosfato solúvel e de matéria orgânica dos solos.

SUMMARY

The purpose of this experiment was to verify the effects of some properties of the soil as pH, and the content of soluble phosphate and organic matter on the soil capacity to fix zinc.

Ten grams each of 30 samples of different soils were placed in a 250 ml Erlenmeyer flask and 4 ml of solution containing 100 mg of inert zinc and 0.7 mcof radioactive ⁶⁵Zn were added. After 20 days of incubation, Zn was extracted with 20 ml of 0.01 M EDTA solution made 1M respect to (NH₄)₂CO₃. An aliquot of 5 ml of the extract was transferred to a test tub and radioactivity of ⁶⁵ Zn in it was measured with a scintillation counter. Quantity of zinc fixed by the different soils was calculated from the data obtained and county made on the standard solution.

It was concluded that the amount of zinc fixed by the soil was positively correlated with pH, soluble phosphate and organic matter content of the soils.

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Full text available only in PDF format.

LITERATURA CITADA

BANDYOPADHYA, A.K. & ADIKARI, M., 1968. Trace element relationships in rice soils: I - Alluvial soils of west Bengal. Soil Sci., 105:224-247.

BARNETTE, R.M., CAMP, J.P., WAGNER, J.D. & GALL, O.E., 1936. The use of zinc sulfate under corn and other fild crops. Florida Agric. Exp. Sta. Bull. 292.

BARROWS, H.L., NEFF, M.F. & GAMMON JR., N., 1960. Effect of soil type on mobility of zinc in the soil and on its availability from zinc sulfate to tung. Soil Sci. Soc. Am. Proc, 24:367-372.

BERGER, K.C. & PRATT, P.F., 1963. Advances in secondary and micronutrient fertilization. Em: Fertilizer Technology and Usage. Soil Sci. Soc. of America, Madison II, Wisconsin, pág. 287-340.

BINGHAM, F.T. & MARTIN, J.P., 1957. Effects of soil phosphorus on growth and minor element nutrition of citrus. Soil Sci. Soc. Am. Proc, 20:382-385.

BINGHAM, F.T., 1963. Relation between phosphorus and micronutrients in plants. Soil Sci. Soc. Am. Proc, 27:389-391. BOAWN, L.C. & LEGGET, G.E., 1964. Phosphorus and zinc concentrations in Russet Binbank potato tissues in relation to development of zinc symptoms. Soil Sci. Soc. Proc, 28:229-232.

BOAWN, L.C, VIETS, F.G. & CRAWFORD, C.L., 1954. Effect of phosphate fertilizers on zinc nutrition of field beans. Soil Sc., 78:1-17.

BROWN, A.L. & JURINAK, J.J., 1964. Effect of liming on the availability of zinc and copper. Soil Sci., 98:170-173.

BROWN, A.L., KRANTZ, B.A. & EDDINGS, J.L., 1970. Zinc - phosphorus interactions as measured by plant response and soil analysis. Soil Sci., 110:415-420.

BURLESON, C.A., DACUS, A. & GERARD, C.J., 1961. The effect of phosphorus fertilization on the zinc nutrition of several irrigated crops. Soil Sci. Soc. Am. Proc, 25:365-368.

CAMP, A.F., CHAPMAN, H.D., BAHRT, G.M. & PARKER, E.R., 1941. Symptoms of citrus malnutrition. Em: Hunger signs in crops, cap. 9. The American Society of Agronomy and the National Fertilizer Association, Washington, D.C.

CAMP, A.F., 1945. Zinc as a nutrient in plant growth. Soil Sci., 60:157-164.

CATANI, R.A. & GALLO, J.R., 1954. Efeitos determinados no solo pelo uso contínuo de fertilizantes. Bragantia, 13:75-83.

CHANDLER, W.H., 1937. Zinc as a nutrient for plants. Bot. Gaz., 98:625-646.

CHAPMAN, H.D., LIEBIG JR. G.F., & VANSELOU, A.P., 1940. Some nutritional relationships on revealed by a study of mineral deficiency and excess symptoms on citrus. Soil Sci. Soc. Am. Proc., 4:196-200.

CHICA, G., JAVIER & JAIME LOTERO, C, 1969. Influencia de fuentes y dosis de nitrogeno en el pH de un suelo aluvial. Rev. do Inst. Colombiano Agropecuário, 4:31-49.

DE MUMBRUM, L.E. & JACKSON, M.L., 1957. Formation of basic cations of copper, zinc, iron and aluminum. Soil Sci. Soc Am. Proc, 21:662.

ELLIS, R. JR., DAVIS, J.E. & THURLOV, D.L., 1964. Zinc availability in calcareous Michigan soils as influenced by phosphorus and temperature. Soil Sc. Soc Am. Proc, 28:83-86.

GALL, O.E. & BARNETTE, R.M., 1940. Toxic limits of replaceable zinc to corn and cowpeas grown on three Florida soils. J. Am. Soc Agron., 32:23-32.

IGUE, K. & GALLO, J.R., 1960. Zinc deficiency of corn in São Paulo. IBEC Research Institute, Bull. 20.

JAMISON, J.S., 1944. The effect of phosphate upon the fixation of zinc and copper in several Florida soils. Proc. Fla. State Hort. Sci., 26-31.

JURINAK, J.J. & THORNE, D.W., 1955. Zinc solubility under alkaline conditions in a zinc-bentonite system. Soil Sci. Soc. Am. Proc, 19:446-448.

KARDOS, L.T., 1955. Em: Chemistry of the soil. Editado por F.E. Bear Reinhold Publishing Corporation, New York.

KHAN, D.H., 1969. Response of sweet corn and rice to phosphorus, zinc and calcium carbonate on acid glenview soil of California. Soil Sci., 108:424-428.

LABANAUSKAS, C.K., EMBLETON, T.W. & JONES, W.W., 1958. Influence of phosphate fertilizers on micronutrients in avocado leaves subject to longterm study of finest orchard. Calif. Agric, 12:10.

LOTT, W.L., 1939. The relation of hidrogen ion concentration to the availability of zinc in the soil. Soil Sci. Soc. Am. Proc., 3:115-121.

NELSON, J.L. & MELSTED, S.W., 1955. The chemistry of zinc added to soil and clays. Soil Sci. Soc. Am. Proc, 19:439-443.

NEVES, O.S., VIEGAS, G.P. & FREIRE, E.S., 1960. Efeito do uso contínuo de certos adubos azotados sobre o pH do solo. Bragantia, 19 (2ª parte), nota nº 25.

NIKITIN, A.A. & RAINEY, J.W., 1952. Reactions between trace element salts and N-P-K carriers in fertilizers. Agron. J., 44:541-546.

PEECH, M., 1939. Chemical studies on soil from Florida citrus groves. Florida Agric Exp. Sta. Tech. Bull. 340.

PEECH, M., 1941. Availability of ions in light sandy soils as affected by soil reaction. Soil Sci., 51:473-486.

PIMENTEL GOMES, F., 1970. Em: Curso de Estatística Experimental, 4ª edição. Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba.

ROGERS, L.H. & CHIH, WV, 1948. Zinc uptake by oats as influenced by application of lime and phosphate. J. Am. Soc Agron., 46:563-566.

SEATZ, L.F. & JURINAK, J.J., 1957. Zinc and soil fertility. Em: Soil, the 1957 Yearbook of Agriculture, pág. 115-121.

SEATZ, L.F., STERGES, A.J. & KRAMER, J.C., 1959. Crops response to zinc fertilization as influenced by lime and phosphorus applications.

SHARPLESS, R.G., WALLIHAN, E.F. & PETERSON, F.F., 1969. Retention of zinc by some arid zone soil materials treated with zinc sulfate. Soil Sci. Soc. Am. Proc, 33:901-904.

TISDALE, S.L. & NELSON, W.L., 1966. Soil Fertility and Fertilizers, 2ª ed. The MacMillanCo., New York; Collier MacMillan Ltd. London.

THORNE, W., 1957. Zinc deficiency and its control. Adv. Agron., 9:31-65.

TRIERWELLER, J.F. & LINDSAY, W.L., 1969. EDTA - ammonium carbonate soil test of zinc Soil Sc. Soc. Am. Proc, 33:49-53.

WOLTZ, S., TOTH, S.J. 8l BEAR, F.E., 1953. Zinc status of New Jersey sous. Sou Sci., 76:115-422.

Entregue para publicação em 6/10/75.

BANDYOPADHYA, A.K. & ADIKARI, M., 1968. Trace element relationships in rice soils: I - Alluvial soils of west Bengal. Soil Sci., 105:224-247.
BARNETTE, R.M., CAMP, J.P., WAGNER, J.D. & GALL, O.E., 1936. The use of zinc sulfate under corn and other fild crops. Florida Agric. Exp. Sta. Bull. 292.
BARROWS, H.L., NEFF, M.F. & GAMMON JR., N., 1960. Effect of soil type on mobility of zinc in the soil and on its availability from zinc sulfate to tung. Soil Sci. Soc. Am. Proc, 24:367-372.
BERGER, K.C. & PRATT, P.F., 1963. Advances in secondary and micronutrient fertilization. Em: Fertilizer Technology and Usage. Soil Sci. Soc. of America, Madison II, Wisconsin, pág. 287-340.
BINGHAM, F.T. & MARTIN, J.P., 1957. Effects of soil phosphorus on growth and minor element nutrition of citrus. Soil Sci. Soc. Am. Proc, 20:382-385.
BINGHAM, F.T., 1963. Relation between phosphorus and micronutrients in plants. Soil Sci. Soc. Am. Proc, 27:389-391.
BOAWN, L.C. & LEGGET, G.E., 1964. Phosphorus and zinc concentrations in Russet Binbank potato tissues in relation to development of zinc symptoms. Soil Sci. Soc. Proc, 28:229-232.
BOAWN, L.C, VIETS, F.G. & CRAWFORD, C.L., 1954. Effect of phosphate fertilizers on zinc nutrition of field beans. Soil Sc., 78:1-17.
BROWN, A.L. & JURINAK, J.J., 1964. Effect of liming on the availability of zinc and copper. Soil Sci., 98:170-173.
BROWN, A.L., KRANTZ, B.A. & EDDINGS, J.L., 1970. Zinc - phosphorus interactions as measured by plant response and soil analysis. Soil Sci., 110:415-420.
BURLESON, C.A., DACUS, A. & GERARD, C.J., 1961. The effect of phosphorus fertilization on the zinc nutrition of several irrigated crops. Soil Sci. Soc. Am. Proc, 25:365-368.
CAMP, A.F., CHAPMAN, H.D., BAHRT, G.M. & PARKER, E.R., 1941. Symptoms of citrus malnutrition. Em: Hunger signs in crops, cap. 9. The American Society of Agronomy and the National Fertilizer Association, Washington, D.C.
CAMP, A.F., 1945. Zinc as a nutrient in plant growth. Soil Sci., 60:157-164.
CATANI, R.A. & GALLO, J.R., 1954. Efeitos determinados no solo pelo uso contínuo de fertilizantes. Bragantia, 13:75-83.
CHANDLER, W.H., 1937. Zinc as a nutrient for plants. Bot. Gaz., 98:625-646.
CHAPMAN, H.D., LIEBIG JR. G.F., & VANSELOU, A.P., 1940. Some nutritional relationships on revealed by a study of mineral deficiency and excess symptoms on citrus. Soil Sci. Soc. Am. Proc., 4:196-200.
CHICA, G., JAVIER & JAIME LOTERO, C, 1969. Influencia de fuentes y dosis de nitrogeno en el pH de un suelo aluvial. Rev. do Inst. Colombiano Agropecuário, 4:31-49.
DE MUMBRUM, L.E. & JACKSON, M.L., 1957. Formation of basic cations of copper, zinc, iron and aluminum. Soil Sci. Soc Am. Proc, 21:662.
ELLIS, R. JR., DAVIS, J.E. & THURLOV, D.L., 1964. Zinc availability in calcareous Michigan soils as influenced by phosphorus and temperature. Soil Sc. Soc Am. Proc, 28:83-86.
GALL, O.E. & BARNETTE, R.M., 1940. Toxic limits of replaceable zinc to corn and cowpeas grown on three Florida soils. J. Am. Soc Agron., 32:23-32.
IGUE, K. & GALLO, J.R., 1960. Zinc deficiency of corn in São Paulo. IBEC Research Institute, Bull. 20.
JAMISON, J.S., 1944. The effect of phosphate upon the fixation of zinc and copper in several Florida soils. Proc. Fla. State Hort. Sci., 26-31.
JURINAK, J.J. & THORNE, D.W., 1955. Zinc solubility under alkaline conditions in a zinc-bentonite system. Soil Sci. Soc. Am. Proc, 19:446-448.
KARDOS, L.T., 1955. Em: Chemistry of the soil. Editado por F.E. Bear Reinhold Publishing Corporation, New York.
KHAN, D.H., 1969. Response of sweet corn and rice to phosphorus, zinc and calcium carbonate on acid glenview soil of California. Soil Sci., 108:424-428.
LABANAUSKAS, C.K., EMBLETON, T.W. & JONES, W.W., 1958. Influence of phosphate fertilizers on micronutrients in avocado leaves subject to longterm study of finest orchard. Calif. Agric, 12:10.
LOTT, W.L., 1939. The relation of hidrogen ion concentration to the availability of zinc in the soil. Soil Sci. Soc. Am. Proc., 3:115-121.
NELSON, J.L. & MELSTED, S.W., 1955. The chemistry of zinc added to soil and clays. Soil Sci. Soc. Am. Proc, 19:439-443.
NEVES, O.S., VIEGAS, G.P. & FREIRE, E.S., 1960. Efeito do uso contínuo de certos adubos azotados sobre o pH do solo. Bragantia, 19 (2Ş parte), nota nş 25.
NIKITIN, A.A. & RAINEY, J.W., 1952. Reactions between trace element salts and N-P-K carriers in fertilizers. Agron. J., 44:541-546.
PEECH, M., 1939. Chemical studies on soil from Florida citrus groves. Florida Agric Exp. Sta. Tech. Bull. 340.
PEECH, M., 1941. Availability of ions in light sandy soils as affected by soil reaction. Soil Sci., 51:473-486.
PIMENTEL GOMES, F., 1970. Em: Curso de Estatística Experimental, 4Ş edição. Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba.
ROGERS, L.H. & CHIH, WV, 1948. Zinc uptake by oats as influenced by application of lime and phosphate. J. Am. Soc Agron., 46:563-566.
SEATZ, L.F. & JURINAK, J.J., 1957. Zinc and soil fertility. Em: Soil, the 1957 Yearbook of Agriculture, pág. 115-121.
SEATZ, L.F., STERGES, A.J. & KRAMER, J.C., 1959. Crops response to zinc fertilization as influenced by lime and phosphorus applications.
SHARPLESS, R.G., WALLIHAN, E.F. & PETERSON, F.F., 1969. Retention of zinc by some arid zone soil materials treated with zinc sulfate. Soil Sci. Soc. Am. Proc, 33:901-904.
TISDALE, S.L. & NELSON, W.L., 1966. Soil Fertility and Fertilizers, 2Ş ed. The MacMillanCo., New York; Collier MacMillan Ltd. London.
THORNE, W., 1957. Zinc deficiency and its control. Adv. Agron., 9:31-65.
TRIERWELLER, J.F. & LINDSAY, W.L., 1969. EDTA - ammonium carbonate soil test of zinc Soil Sc. Soc. Am. Proc, 33:49-53.
WOLTZ, S., TOTH, S.J. 8l BEAR, F.E., 1953. Zinc status of New Jersey sous. Sou Sci., 76:115-422.

*

Os autores são gratos aos Profs. E. Malavolta e A. Cervellini pelo fornecimento do

^6sZn e pela permissão do uso das dependências e aparelhos do CENA, respectivamente.

Datas de Publicação

Publicação nesta coleção
30 Maio 2012
Data do Fascículo
1975

Histórico

Recebido
06 Out 1975

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] BANDYOPADHYA, A.K. & ADIKARI, M., 1968. Trace element relationships in rice soils: I - Alluvial soils of west Bengal. Soil Sci., 105:224-247.

[2] BARNETTE, R.M., CAMP, J.P., WAGNER, J.D. & GALL, O.E., 1936. The use of zinc sulfate under corn and other fild crops. Florida Agric. Exp. Sta. Bull. 292.

[3] BARROWS, H.L., NEFF, M.F. & GAMMON JR., N., 1960. Effect of soil type on mobility of zinc in the soil and on its availability from zinc sulfate to tung. Soil Sci. Soc. Am. Proc, 24:367-372.

[4] BERGER, K.C. & PRATT, P.F., 1963. Advances in secondary and micronutrient fertilization. Em: Fertilizer Technology and Usage. Soil Sci. Soc. of America, Madison II, Wisconsin, pág. 287-340.

[5] BINGHAM, F.T. & MARTIN, J.P., 1957. Effects of soil phosphorus on growth and minor element nutrition of citrus. Soil Sci. Soc. Am. Proc, 20:382-385.

[6] BINGHAM, F.T., 1963. Relation between phosphorus and micronutrients in plants. Soil Sci. Soc. Am. Proc, 27:389-391.

[7] BOAWN, L.C. & LEGGET, G.E., 1964. Phosphorus and zinc concentrations in Russet Binbank potato tissues in relation to development of zinc symptoms. Soil Sci. Soc. Proc, 28:229-232.

[8] BOAWN, L.C, VIETS, F.G. & CRAWFORD, C.L., 1954. Effect of phosphate fertilizers on zinc nutrition of field beans. Soil Sc., 78:1-17.

[9] BROWN, A.L. & JURINAK, J.J., 1964. Effect of liming on the availability of zinc and copper. Soil Sci., 98:170-173.

[10] BROWN, A.L., KRANTZ, B.A. & EDDINGS, J.L., 1970. Zinc - phosphorus interactions as measured by plant response and soil analysis. Soil Sci., 110:415-420.

[11] BURLESON, C.A., DACUS, A. & GERARD, C.J., 1961. The effect of phosphorus fertilization on the zinc nutrition of several irrigated crops. Soil Sci. Soc. Am. Proc, 25:365-368.

[12] CAMP, A.F., CHAPMAN, H.D., BAHRT, G.M. & PARKER, E.R., 1941. Symptoms of citrus malnutrition. Em: Hunger signs in crops, cap. 9. The American Society of Agronomy and the National Fertilizer Association, Washington, D.C.

[13] CAMP, A.F., 1945. Zinc as a nutrient in plant growth. Soil Sci., 60:157-164.

[14] CATANI, R.A. & GALLO, J.R., 1954. Efeitos determinados no solo pelo uso contínuo de fertilizantes. Bragantia, 13:75-83.

[15] CHANDLER, W.H., 1937. Zinc as a nutrient for plants. Bot. Gaz., 98:625-646.

[16] CHAPMAN, H.D., LIEBIG JR. G.F., & VANSELOU, A.P., 1940. Some nutritional relationships on revealed by a study of mineral deficiency and excess symptoms on citrus. Soil Sci. Soc. Am. Proc., 4:196-200.

[17] CHICA, G., JAVIER & JAIME LOTERO, C, 1969. Influencia de fuentes y dosis de nitrogeno en el pH de un suelo aluvial. Rev. do Inst. Colombiano Agropecuário, 4:31-49.

[18] DE MUMBRUM, L.E. & JACKSON, M.L., 1957. Formation of basic cations of copper, zinc, iron and aluminum. Soil Sci. Soc Am. Proc, 21:662.

[19] ELLIS, R. JR., DAVIS, J.E. & THURLOV, D.L., 1964. Zinc availability in calcareous Michigan soils as influenced by phosphorus and temperature. Soil Sc. Soc Am. Proc, 28:83-86.

[20] GALL, O.E. & BARNETTE, R.M., 1940. Toxic limits of replaceable zinc to corn and cowpeas grown on three Florida soils. J. Am. Soc Agron., 32:23-32.

[21] IGUE, K. & GALLO, J.R., 1960. Zinc deficiency of corn in São Paulo. IBEC Research Institute, Bull. 20.

[22] JAMISON, J.S., 1944. The effect of phosphate upon the fixation of zinc and copper in several Florida soils. Proc. Fla. State Hort. Sci., 26-31.

[23] JURINAK, J.J. & THORNE, D.W., 1955. Zinc solubility under alkaline conditions in a zinc-bentonite system. Soil Sci. Soc. Am. Proc, 19:446-448.

[24] KARDOS, L.T., 1955. Em: Chemistry of the soil. Editado por F.E. Bear Reinhold Publishing Corporation, New York.

[25] KHAN, D.H., 1969. Response of sweet corn and rice to phosphorus, zinc and calcium carbonate on acid glenview soil of California. Soil Sci., 108:424-428.

[26] LABANAUSKAS, C.K., EMBLETON, T.W. & JONES, W.W., 1958. Influence of phosphate fertilizers on micronutrients in avocado leaves subject to longterm study of finest orchard. Calif. Agric, 12:10.

[27] LOTT, W.L., 1939. The relation of hidrogen ion concentration to the availability of zinc in the soil. Soil Sci. Soc. Am. Proc., 3:115-121.

[28] NELSON, J.L. & MELSTED, S.W., 1955. The chemistry of zinc added to soil and clays. Soil Sci. Soc. Am. Proc, 19:439-443.

[29] NEVES, O.S., VIEGAS, G.P. & FREIRE, E.S., 1960. Efeito do uso contínuo de certos adubos azotados sobre o pH do solo. Bragantia, 19 (2Ş parte), nota nş 25.

[30] NIKITIN, A.A. & RAINEY, J.W., 1952. Reactions between trace element salts and N-P-K carriers in fertilizers. Agron. J., 44:541-546.

[31] PEECH, M., 1939. Chemical studies on soil from Florida citrus groves. Florida Agric Exp. Sta. Tech. Bull. 340.

[32] PEECH, M., 1941. Availability of ions in light sandy soils as affected by soil reaction. Soil Sci., 51:473-486.

[33] PIMENTEL GOMES, F., 1970. Em: Curso de Estatística Experimental, 4Ş edição. Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba.

[34] ROGERS, L.H. & CHIH, WV, 1948. Zinc uptake by oats as influenced by application of lime and phosphate. J. Am. Soc Agron., 46:563-566.

[35] SEATZ, L.F. & JURINAK, J.J., 1957. Zinc and soil fertility. Em: Soil, the 1957 Yearbook of Agriculture, pág. 115-121.

[36] SEATZ, L.F., STERGES, A.J. & KRAMER, J.C., 1959. Crops response to zinc fertilization as influenced by lime and phosphorus applications.

[37] SHARPLESS, R.G., WALLIHAN, E.F. & PETERSON, F.F., 1969. Retention of zinc by some arid zone soil materials treated with zinc sulfate. Soil Sci. Soc. Am. Proc, 33:901-904.

[38] TISDALE, S.L. & NELSON, W.L., 1966. Soil Fertility and Fertilizers, 2Ş ed. The MacMillanCo., New York; Collier MacMillan Ltd. London.

[39] THORNE, W., 1957. Zinc deficiency and its control. Adv. Agron., 9:31-65.

[40] TRIERWELLER, J.F. & LINDSAY, W.L., 1969. EDTA - ammonium carbonate soil test of zinc Soil Sc. Soc. Am. Proc, 33:49-53.

[41] WOLTZ, S., TOTH, S.J. 8l BEAR, F.E., 1953. Zinc status of New Jersey sous. Sou Sci., 76:115-422.