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Productive performance of soybean cultivars grown in different plant densities/Desempenho produtivo de cultivares de soja cultivadas em diferentes densidades de plantas
Plants density in soybean cultivation is an important management practice to achieve high grain yield. In this way, the objective was to evaluate the agronomic traits and grain yield in soybean in different plant densities, in two locations in the south of Minas Gerais. The experimental design was i...
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Published in: | Ciência rural 2017-07, Vol.47 (7) |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | Spanish |
Online Access: | Get full text |
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Summary: | Plants density in soybean cultivation is an important management practice to achieve high grain yield. In this way, the objective was to evaluate the agronomic traits and grain yield in soybean in different plant densities, in two locations in the south of Minas Gerais. The experimental design was in randomized blocks, arranged in a split plot design, with three replications. Plots were composed of four population densities (300, 400, 500 and 600 thousand plants per hectare) and the subplots were composed of six cultivars ('BMX Forga RR', 'CD 250 RR', FMT 08-60.346/1', 'NA 5909 RR', 'TMG 7161 RR' and 'V--TOP RR') grown in Lavras and Inconfidentes, both in Minas Gerais. At the time of harvest was determined the plant height, lodging, insertion of the first pod, harvest index, number of pods per plant, number of grains, number of grains per pod and yield. Regardless of the soybean cultivar, the plant density of up to 600, 000 per ha does not affect grain yield, plant height, lodging, harvest index, and number of grains per pod. The cultivars 'V-TOP RR' and 'BMX FORQA RR' showed high grain yield and good agronomic traits in Lavras and Incofidentes. Key words: Glycine max (L.) Merrill, environments, plants spatial arrangement, yield. A densidade de plantas no cultivo de soja e uma pratica de manejo relevante para o alcance de alta produtividade de graos. Dessa forma, objetivou-se avaliar os caracteres agronomicos e produtividade dos graos na soja em diferentes densidades de plantas. O delineamento experimental utilizado foi o de blocos casualizados, dispostos em esquema de parcelas subdivididas, com tres repeticoes. As parcelas foram compostas por quatro densidades populacionais (300, 400, 500 e 600 mil plantas por hectare) e, as subparcelas foram compostas por seis cultivares ('BMX Forga RR', 'CD 250 RR', 'FMT 08-60.346/1', 'NA 5909 RR', 'TMG 7161 RR' e 'V--TOP RR') cultivados em Lavras e Incofidentes, ambos em Minas Gerais. Na ocasiao da colheita determinou-se a altura de plantas, o acamamento, a insercao do primeiro legume, o indice de colheita, o numero de vagens por planta, o numero de graos, o numero de graos por vagem e a produtividade. Independentemente da cultivar de soja, a densidade de plantas de ate 600.000 por ha, nao afeta o rendimento de graos, altura da planta, acamamento, indice de colheita e numero de graos por vagem. As cultivares 'V-TOP RR' e 'BMX FORQA RR' apresentaram alto rendimento de graos e boas caracteristicas agronomicas em Lavras e |
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ISSN: | 0103-8478 |
DOI: | 10.1590/0103-8478cr2016Q928 |