Agronomic performance of cowpea cultivars inoculated with rhizobia in the brazilian semiarid region

Oliveira, Pedro R. H. de; Lopes, Welder de A. R.; Silveira, Flávio P. da M.; Santos, Manoel G. dos; Santos, Gisele L. dos; Silva, Silvana F. da; Silveira, Lindomar M. da; Barros Júnior, Aurélio P.

doi:10.1590/1983-21252023v36n406rc

Acessibilidade / Reportar erro

Brasil

Español English

sumário « anterior atual seguinte »

Sumário

Agronomy • Rev. Caatinga 36 (4) • Oct-Dec 2023 • https://doi.org/10.1590/1983-21252023v36n406rc copy

Agronomic performance of cowpea cultivars inoculated with rhizobia in the brazilian semiarid region

Desempenho agrônomico de cultivares de caupi inoculadas com rizóbio no semiárido brasileiro

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This work aimed to evaluate the agronomic efficiency of cowpea cultivars inoculated with rhizobia strains recommended for cowpea in a semiarid environment. Experiments were carried out in Mossoró, Rio Grande do Norte, in two agricultural cycles: the first from January to April 2019, and the second from June to August of the same year. The experimental design adopted was randomized blocks with four replications arranged in a 4 × 4 x 2 factorial scheme, with treatments consisting of four cowpea cultivars: ‘BRS Imponente’, ‘BRS Itaim’, ‘BRS Novaera’, and ‘BRS Tumucumaque’ as well as three sources of N, two strains of Bradyrhizobium spp. registered for cowpea (BR 3262 and BR 3267) and, the application of mineral N (50 kg ha^-1), beyond an absolute control, without inoculation or application of mineral N. In addition to two planting seasons. The cultivar ‘BRS Tumucumaque’ showed greater productive potential. The inoculation of cowpea seeds with Bradyrhizobium strains BR 3262 and BR 3267 provided grain yields similar to those obtained with the application of mineral N.

Keywords
Vigna unguiculata L; (Walp); Biological nitrogen fixation; Inoculant

SV	DF	Means Square
SV	DF	NN	DMN	DMAP	RE	LP	NGPP	GY	W100G	GI
Block (crop)	6	161.24	8335.69	4.25	1660.34	2.22	2.36	766600.34	7.61	2.62
Crop (Cr)	1	439.45^**	314546.04^**	545.37^**	1540.37^ns	3.09 ns	69.60^**	18133016.27^**	449.06^**	134.46^**
Cultivar (C)	3	376.66^**	32146.20^**	25.80^**	1155.36^ns	128.51^**	21.35^**	1310583.46^**	357.43^**	96.90^**
N Source (N)	3	861.66^**	39089.04^**	14.58^**	2628.63^**	1.74 ns	2.59 ns	496004.03^**	10.16 ^ns	3.70 ns
C x Cr	3	93.43^**	6796.98^*	30.64^**	3546.65^**	2.95 ns	4.12^**	601453.68^**	18.94 ^ns	23.70^**
N x Cr	3	112.27^*	11505.81^**	1.90^ns	500.95^ns	2.14 ns	1.42 ns	719217.88^**	30.08 ^ns	14.16^**
C x N	9	43.64^*	4835.23^*	2.42^ns	268.95^ns	1.50 ns	0.98 ns	178025.27 ^ns	13.31 ^ns	4.09 ns
Cr x C x N	9	61.04^ns	6457^**	2.57^ns	466.87^ns	1.06 ns	1.40 ns	347435.12^**	21.27 ^ns	5.21 ns
Error	90	33.38	1919.30	1.63	448.10	1.12	1.01	100585.01	23.00	2.64
CV (%)		22.48	23.38	17.06	22.15	5.93	10.93	23.04	20.57	2.10

Cultivar/N source	Number of Nodules (nodules plant^-1)
Cultivar/N source	Crop 1	Crop 2
BRS Imponente	29.44 Aa	24.21 Ab
BRS Itaim	25.52 Aa	25.00 Aa
BRS Novaera	25.15 Aa	17.36 Bb
BRS Tumucumaque	30.09 Aa	28.82 Aa
Abscence of N	26.03 Ba	21.75 BCb
BR 3267	34.91 Aa	26.14 ABb
BR 3262	29.44 Ba	28.90 Aa
N mineral	19.82 Ca	18.59 Ca

N Source		Number of Nodules (nodules plant^-1)
N Source	Absence of N	BR 3267	BR 3262	N mineral
BRS Imponente	25.00 Abc	32.97 ABa	28.92 ABab	20.40 Ac
BRS Itaim	24.73 Aab	28.46 BCa	26.95 Bab	20.90 Ab
BRS Novaera	19.95 Aab	24.06 Ca	25.09 Ba	15.92 Ab
BRS Tumucumaque	25.86 Ab	36.61 Aa	35.73 Aa	19.62 Ab

Crop	Cultivar		Dry matter of nodules (mg planta^-1)
				N source
		Absence of N	BR 3267	BR 3262	N mineral
1	BRS Imponente BRS Itaim	247.09 Bab 313.70 ABa	311.55 Aa 212.33 BCb	182.75Bbc 233.32 Bab	111.78 Bc 176.47 ABb
	BRS Novaera	262.96 ABa	156.33 Cc	239.45 Bab	160.29 Bbc
	BRS Tumucumaque	332.42 Aab	241.37 ABc	356.08 Aa	253.09 Abc
2	BRS Imponente BRS Itaim	125.85 Aa 160.07 Aab	148.97 Aa 170.46 Aab	165.33 ABa 195.96 Aa	116.19 Aa 93.73 Ab
	BRS Novaera	104.22 Aa	116.17 Aa	110.28 Ba	64.43 Aa
	BRS Tumucumaque	144.55 Aa	186.82 Aa	186.69 ABa	114.95 Aa

Cultivar	Dry matter of the aerial part (g plant^-1)			Relative efficiency (%)
Cultivar	Crop 1	Crop 2	Crop 1	Crop 2
BRS Imponente	12.12 Aa	5.14 Ab	109.70 Aa	84.58 Ab
BRS Itaim	8.21 Ca	5.67 Ab	76.59 Bb	97.01 Aa
BRS Novaera	8.27 Ca	4.97 Ab	101.00 Aa	99.70 Aa
BRS Tumucumaque	9.59 Ba	5.88 Ab	108.90 Aa	87.15 Ab

N source	Dry matter of the aerial part	Relative efficiency
N source	(g plant^-1)	(%)
Absence of N	6.53 B	82.93 B
BR 3267	8.03 A	103.76 A
BR 3262	7.50 A	95.63 AB
N mineral	7.88 A	100.00 A

Cultivar	Pod length (cm)	Number of grains per pod (grains pod^-1)
Cultivar	Pod length (cm)	Crop 1	Crop 2
BRS Imponente	17.44 B	8.89 Ba	7.56 Bb
BRS Itaim	17.16 B	9.76 Ba	8.88 Ab
BRS Novaera	16.20 C	9.64 Ba	8.46 ABb
BRS Tumucumaque	20.80 A	11.46 Aa	8.95 Ab

Cultivar	Weight of 100 grains (g)		AVERAGE
Cultivar	Crop 1	Crop 2	AVERAGE
BRS Imponente	25.80	29.58	27.69 A
BRS Itaim	18.88	20.47	19.68 C
BRS Novaera	21.03	26.14	23.59 B
BRS Tumucumaque	20.05	24.55	22.30 BC
Average	21.44 b	25.18 a

Crop	Cultivar		Grain yield (kg ha^-1)
				N source
		Absence of N	BR 3267	BR 3262	N mineral
1	BRS Imponente BRS Itaim	1141.36 Aab 943.95 Aab	1170.56 Aa 875.62 Aab	574.07 Bb 1361.60 Aa	690.57 Bab 725.45 Bb
	BRS Novaera	948.46 Aab	1061.22 Aab	1379.93 Aa	740.20 Bb
	BRS Tumucumaque	987.07 Aa	958.73 Aa	967.21 ABa	1474.18 Aa
2	BRS Imponente BRS Itaim	1315.51 Aa 1345.98 Ab	1344.14 Ca 2087.68 ABa	1417.93 Ba 1608.44 Bab	1786.90 Aa 2144.61 Aa
	BRS Novaera	1206.06 Aa	1683.10 BCa	1580.22 Ba	1692.27 Aa
	BRS Tumucumaque	1663.72 Ab	2562.42 Aa	2331.97 Aa	2273.47 Aa

Cultivar/N source
Cultivar/N source	Crop 1	Crop 2
BRS Imponente	75.46 Bb	77.49 Ba
BRS Itaim	77.80 Ab	81.94 Aa
BRS Novaera	76.04 Bb	78.14 Ba
BRS Tumucumaque	76.00 Ba	75.93 Ca
Abscence of N	76.42 ABb	78.16 Aa
BR 3267	77.68 Aa	77.98 Aa
BR 3262	75.79 Bb	78.72 Aa
N mineral	75.42 Bb	78.64 Aa

Universidade Federal Rural do Semi-Árido Avenida Francisco Mota, número 572, Bairro Presidente Costa e Silva, Cep: 5962-5900, Telefone: 55 (84) 3317-8297 - Mossoró - RN - Brazil
E-mail: caatinga@ufersa.edu.br

Acompanhe os números deste periódico no seu leitor de RSS

[1] Conflict of interest: The authors declare no conflict of interest related to the publication of this manuscript.