Data/hora: 03/06/2024 09:05:23

Provedor de dados: | 90
País: | Brazil
Título: | In-furrow inoculation of soybean as alternative to fungicide and micronutrient seed treatment
Autores: | Campo,Rubens José; Araujo,Ricardo Silva; Mostasso,Fábio Luís; Hungria,Mariangela.
Data: | 2010-08-01
Ano: | 2010
Palavras-chave: | Glycine max [L. (Merrill.)]; Bradyrhizobium; Inoculant.
Resumo: | Soybean is a major grain crop in Brazil, and yields can be considerably improved by inoculation with selected Bradyrhizobium strains. However, the incompatibility between inoculation and seed treatments with fungicides and micronutrients represents a major barrier to the achievement of high rates of biological N2 fixation. Inoculation practices that can alleviate the negative effects of agrochemicals must therefore be found and in-furrow inoculation seems to be an attractive alternative. This study reports the results of seven field experiments conducted in three growing seasons in Brazil; three in soils previously cropped with inoculated soybean (&amp;gt; 10(4) cells g-1 of soil of Bradyrhizobium), and four in areas where the crop was sown for the first time (&lt; 10² cells g-1 of soil of Bradyrhizobium). The compatibility with fungicides and micronutrients was compared in seeds inoculated with peat or liquid inoculants, or treated with different doses of liquid inoculant in-furrow. In areas with established Bradyrhizobium populations, seed-applied agrochemicals did generally not affect nodulation, but also did not increase yields, while inoculation always increased N grain accumulation or yield, and N fertilizer decreased both nodulation and yield. Where soybean was sown for the first time, the seed treatment with agrochemicals affected nodulation when applied together with peat or liquid inoculant. In-furrow inoculation alleviated the effects of seed treatment with agrochemicals; the best performance was achieved with high Bradyrhizobium cell concentrations, with up to 2.5 million cells seed-1.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000400010
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832010000400010
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.34 n.4 2010
Fonte: | info:eu-repo/semantics/openAccess