Seed vigor level in association to fertilizer distribution

Simone Morgan Dellagostin,Paulo Dejalma Zimmer,Alan Junior de Pelegrin,Vinícius Jardel Szareski,Tiago Zanatta Aumonde,Gustavo Henrique Demari,Tiago Corazza da Rosa,Walter Boller,Tiago Pedó,Ivan Ricardo Carvalho,Francisco Amaral Villela,Jaqueline Mara Dill,Michele Renata Revers Meneguzzo

doi:10.33448/rsd-v9i10.8658

Abstract

This work aimed at evaluating yielding responses of soybean seeds production fields in response to the association between seed vigor level and fertilizer distribution systems at the sowing line.Experimental design was randomized blocks design, with two growing environments (Passo Fundo - RS and Ernestina - RS) x three vigor levels (high = 90%, medium = 70% and low = 60%) x three fertilizer distribution systems (absence, conventional and by transhipment), arranged in four replicates, grain yield (GY). For grain yield (GY), it was applied the method genotype main effects and genotype environment interaction (GGE). Seed vigor levels and fertilizer distribution systems influence on seed yield, first pod insertion height, plant height, number of pods in the main stem and ramifications, magnitude and length of ramifications in soybean.The high vigor level in the conventional and by transshipment fertilization systems provided an absolute increase of 10.9 and 5.6% in seed yield, respectively, in Ernestina-RS. The conventional fertilizer distribution system, in Passo Fundo-RS, increased seed yield in 12.5% in plants originated from low vigor seeds.

Highlights

Soybean (Glycine max (L.) Merrill), originating from China, is the Fabaceae with the greatest economic expression in the world, being Brazil the second largest producer
This work aimed at evaluating yielding responses of soybean seeds production fields in response to the association between seed vigor level and fertilizer distribution systems at the sowing line.Experimental design was randomized blocks design, with two growing
The conventional fertilizer distribution system, in Passo FundoRS, increased seed yield in 12.5% in plants originated from low vigor seeds

Summary

Introduction

Soybean (Glycine max (L.) Merrill), originating from China, is the Fabaceae with the greatest economic expression in the world, being Brazil the second largest producer. A survey carried out by CONAB (National Food Supply Company) shows how much soybean production in Brazil corresponds to the countrys growing area, reaching 35.2 million hectares in the 2017/18 harvest, with production of approximately 117 million tons (CONAB, 2017). World populational growth is directly related to the demand for food, improved growing techniques for productivity increase are essential. Many factors influence soybean yield, among them, the use of high physiological quality and high-vigor seeds are highlighted. These factors provide uniformity in germination, emergence and seedling growth at field conditions, improving grain yield (Marcos Filho et al, 2009; Szareski et al, 2018a; Troyjack et al, 2018; Szareski et al, 2018b; Meneguzzo et al, 2020)

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