Interaction between Soybean Cultivars and Seed Density

Igor Oliveri Soares,Pedro Milanez de Rezende,Alan Mario Zuffo,Cícero Monti Teixeira,Adriano Teodoro Bruzi,Vanoli Fronza,Everton Vinicius Zambiazzi

doi:10.4236/ajps.2015.69142

Igor Oliveri Soares, Pedro Milanez de Rezende + Show 5 more

Open Access

https://doi.org/10.4236/ajps.2015.69142

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Abstract

Plant, environmental conditions and management type will determine final crop yield. Enhanced yield can be reached by using well-adapted and potentially productive genotypes; all of them ally to crop cultural practices and management. Among these, seed density stands out, once it interferes with plant morphology and competition for water and nutrients. Thus, this study aimed to evaluate the effect of varied seed densities on agronomic traits in soybean, besides identifying cultivars with wide adaptability to different environments and seed densities. Six soybean cultivars were assessed under four seed densities (100, 200, 300 and 400 thousand plants·ha-1), in nine different environments from Minas Gerais State, Brazil. The experimental design was a completely randomized block design with three replications. The BRSMG 760SRR and BRSMG 820RR cultivars had the best average performance independent of the environments and seed densities. The seed density of 300 thousand plants per hectare showed to be as the most adequate for soybean cultivation on the evaluated environments. Furthermore, seed density interacted with the agronomic traits in soybean.

Highlights

Crop yield is regulated by plant, environment and management interaction
Lima [3] pointed out that seed density setting is essential for proper plant growth, biomass accumulation and grain production, once it affects light, water and nutrient uses [4]
Based on the above considerations, this study aimed to evaluate the effect of different seed densities on agronomic traits in soybean, in addition to identify cultivars with wide adaptability to the evaluated environments and seed densities

Summary

Introduction

Crop yield is regulated by plant, environment and management interaction. High yields are reached when well-How to cite this paper: Soares, I.O., de Rezende, P.M., Bruzi, A.T., Zuffo, A.M., Zambiazzi, E.V., Fronza, V. and Teixeira, C.M. (2015) Interaction between Soybean Cultivars and Seed Density. Crop yield is regulated by plant, environment and management interaction. Seed density stands out as the most important management tool, directly interfering with interspecific and intraspecific competition for soil resources, especially water and nutrients, besides bringing about morphological changes in plants [2]. Among these changes, plant height, branch length, number of branches and fruitful nodes are major yield components. Lima [3] pointed out that seed density setting is essential for proper plant growth, biomass accumulation and grain production, once it affects light, water and nutrient uses [4]

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