Application dissecants in soybean: degree of humidity in the plant's seeds and biomass

Planta Daninha

Lacerda, A.L.S.¹  Universidade de São Paulo, Campinas¹  Universidade Estadual Paulista, Ilha Solteira¹  Lazarini, E.¹  Universidade Estadual Paulista¹  Walter Filho, V.V.¹  Sá, M.E.¹ 

关键词: Glycine max;    dissecation;    diquat;    paraquat;    ammonium glufosinate.;   

DOI  :  10.1590/S0100-83582003000300011

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

The objectives of this work were to evaluate dissecant efficiency and determine the best application time for soybean crop. The experimental design was randomized blocks in factorial schemes 3x3 and 4x4 (dissecants x application time), in 1996/1997 and 1997/1998, respectively. The dissecants applied were: paraquat, diquat and paraquat + diquat in 1996/97 and paraquat, diquat, paraquat + diquat and ammonium glufosinate in 1997/1998, respectively, in the following doses: 0.4; 0.3 and 0.2 + 0.15 and 0.4; 0.3; 0.2 + 0.15 and 0.4 kg a.i. ha-1 Three application times were used in 1996/1997 and four in 1997/1998, with intervals of five days starting from stage R6. Analysis and interpretation of the results allowed to conclude that the dissecants were efficient and that seed moisture between 50 and 60%, plants with low incidence of yellow and brown beans and the relation green biomass weight/total green biomass weight of the plants around 0.5 were the main characteristics for determining the best times for dissecant application.

【 授权许可】

Unknown