Agronomic efficiency for nitrogen, phosphorus, and potassium in bean cultivars.

The aim of this study was to identify and categorize new bean cultivars regarding their efficiency and responsiveness to nitrogen, phosphorus, and potassium, both individually and simultaneously, as well as to stipulate the cultivars that would suit each niche market based on this classification. Three experiments were conducted in the field separated by nutrients adopting the randomized block design in a factorial scheme (11 x 4) of 11 cultivars in four doses with three replications. Grain yield was the variable investigated and the means were the basis for the classification separated by in four availabilities: low, partial, adequate dose, and nutritional excess. Genetic variability was observed among the bean cultivars for efficiency and responsiveness (agronomic efficiency) to nitrogen, phosphorus, and potassium. The following cultivars: BRS Agreste, BRS Estilo, BRS Notável, and Pérola revealed the greatest values of efficiency and responsive ratings for nitrogen, phosphorus, and potassium, with indications for low and high technological levels. On the contrary, the cultivars BRS Ametista and BRS Sublime based on the efficiency and non-responsive classification showed a low ability to acquire or utilize the nutrients for grain formation. The BRS Pontal cultivar for all three nutrients displayed a high degree of efficiency with a value exceeding the average under different conditions of stress, suggesting that a more rustic cultivar best suits the market niche of small farmers.

Bibliographic Details

Main Authors:	PACHECO, J. S., RESENDE, C. L. P., MENDES, R. C., PEREIRA, H. S., RODRIGUES, F.
Other Authors:	JESSICA SCHRODER PACHECO, UNIVERSIDADE ESTADUAL DE GOIÁS, Ipameri-GO; CECILIA LEAO PEREIRA RESENDE, UNIVERSIDADE ESTADUAL DE GOIÁS, Ipameri-GO; RAFAEL CORREIA MENDES, UNIVERSIDADE ESTADUAL DE GOIÁS, Ipameri-GO; HELTON SANTOS PEREIRA, CNPAF; FABRICIO RODRIGUES, UNIVERSIDADE ESTADUAL DE GOIÁS, Ipameri-GO.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2020-11-09
Subjects:	Feijão, Phaseolus Vulgaris, Nitrogênio, Fósforo, Potássio, Produtividade, Eficiência Nutricional, Beans, Soil productivity, Technological change,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126388 http://dx.doi.org/10.14393/BJ-v36n5a2020-42340
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