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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
25/07/2012 |
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Data da última atualização: |
03/08/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FAGERIA, N. K.; BALIGAR, V. C.; MELO, L. C.; OLIVEIRA, J. P. de. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; V. C. BALIGAR, USDA; LEONARDO CUNHA MELO, CNPAF; JAISON PEREIRA DE OLIVEIRA, CNPAF. |
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Título: |
Differential soil acidity tolerance of dry bean genotypes. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 43, n. 11, p. 1523-1531, June 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Soil acidity is a major yield-limiting factors for bean production in the tropical regions. Using soil acidity?tolerant genotypes is an important strategy in improving bean yields and reducing cost of production. A greenhouse experiment was conducted with the objective of evaluating 20 dry bean genotypes for their tolerance to soil acidity constraints. An Inceptisol soil was amended with dolomitic lime (2 g dolomitic lime kg?1 soil) to achieve low acidity (pH = 5.9) and without lime (zero lime kg?1 soil,) to achieve high acidity (pH = 4.8) levels to evaluate bean genotypes. At both acidity levels, genotypes differed significantly in shoot dry weight and grain yield. Shoot dry weight and grain yield were significantly decreased at the high acidity level compared to the low acidity level. Grain yield was more sensitive to soil acidity than shoot dry weight. Hence, grain yield was used in determination of tolerance index (GTI) to differentiate the range of soil acidity tolerance among bean genotypes. Based on a GTI value, 55% of the genotypes were classified as tolerant, 40% classified as moderately tolerant, and the remaining were grouped as susceptible to soil acidity. The genotype CNFC 10410 was most tolerant and genotype CNFP 10120 was most susceptible to soil acidity. Number of pods and grain harvest index were significantly and positively associated with grain yield. The improvement in grain yield in low acidity may be related to reduction of toxic levels of soil aluminum (Al3+) and hydrogen (H+) ions by lime addition. At harvest, soil extractable phosphorus (P) and potassium (K) increased with the reduction of soil acidity, and this might have contributed to the better nutrition of beans and lead to higher growth. MenosSoil acidity is a major yield-limiting factors for bean production in the tropical regions. Using soil acidity?tolerant genotypes is an important strategy in improving bean yields and reducing cost of production. A greenhouse experiment was conducted with the objective of evaluating 20 dry bean genotypes for their tolerance to soil acidity constraints. An Inceptisol soil was amended with dolomitic lime (2 g dolomitic lime kg?1 soil) to achieve low acidity (pH = 5.9) and without lime (zero lime kg?1 soil,) to achieve high acidity (pH = 4.8) levels to evaluate bean genotypes. At both acidity levels, genotypes differed significantly in shoot dry weight and grain yield. Shoot dry weight and grain yield were significantly decreased at the high acidity level compared to the low acidity level. Grain yield was more sensitive to soil acidity than shoot dry weight. Hence, grain yield was used in determination of tolerance index (GTI) to differentiate the range of soil acidity tolerance among bean genotypes. Based on a GTI value, 55% of the genotypes were classified as tolerant, 40% classified as moderately tolerant, and the remaining were grouped as susceptible to soil acidity. The genotype CNFC 10410 was most tolerant and genotype CNFP 10120 was most susceptible to soil acidity. Number of pods and grain harvest index were significantly and positively associated with grain yield. The improvement in grain yield in low acidity may be related to reduction of toxic levels of soil aluminum... Mostrar Tudo |
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Palavras-Chave: |
Grain harvest index; Shoot dry weight. |
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Thesagro: |
Acidez do solo; Feijão; Phaseolus vulgaris. |
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Thesaurus NAL: |
Beans; Grain yield. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02432naa a2200241 a 4500
001 1929220
005 2012-08-03
008 2012 bl uuuu u00u1 u #d
100 1 $aFAGERIA, N. K.
245 $aDifferential soil acidity tolerance of dry bean genotypes.
260 $c2012
520 $aSoil acidity is a major yield-limiting factors for bean production in the tropical regions. Using soil acidity?tolerant genotypes is an important strategy in improving bean yields and reducing cost of production. A greenhouse experiment was conducted with the objective of evaluating 20 dry bean genotypes for their tolerance to soil acidity constraints. An Inceptisol soil was amended with dolomitic lime (2 g dolomitic lime kg?1 soil) to achieve low acidity (pH = 5.9) and without lime (zero lime kg?1 soil,) to achieve high acidity (pH = 4.8) levels to evaluate bean genotypes. At both acidity levels, genotypes differed significantly in shoot dry weight and grain yield. Shoot dry weight and grain yield were significantly decreased at the high acidity level compared to the low acidity level. Grain yield was more sensitive to soil acidity than shoot dry weight. Hence, grain yield was used in determination of tolerance index (GTI) to differentiate the range of soil acidity tolerance among bean genotypes. Based on a GTI value, 55% of the genotypes were classified as tolerant, 40% classified as moderately tolerant, and the remaining were grouped as susceptible to soil acidity. The genotype CNFC 10410 was most tolerant and genotype CNFP 10120 was most susceptible to soil acidity. Number of pods and grain harvest index were significantly and positively associated with grain yield. The improvement in grain yield in low acidity may be related to reduction of toxic levels of soil aluminum (Al3+) and hydrogen (H+) ions by lime addition. At harvest, soil extractable phosphorus (P) and potassium (K) increased with the reduction of soil acidity, and this might have contributed to the better nutrition of beans and lead to higher growth.
650 $aBeans
650 $aGrain yield
650 $aAcidez do solo
650 $aFeijão
650 $aPhaseolus vulgaris
653 $aGrain harvest index
653 $aShoot dry weight
700 1 $aBALIGAR, V. C.
700 1 $aMELO, L. C.
700 1 $aOLIVEIRA, J. P. de
773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 43, n. 11, p. 1523-1531, June 2012.
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