Efficacy of ACCase-inhibiting herbicides in controlling grass weeds in soybean crops

Planta Daninha

Universidade de Rio Verde, Rio Verde¹  Braz, G.B.P.¹  Procópio, S.O.¹  Barroso, A.L.L.¹  Universidade de Rio Verde¹  Toledo, R.E.B.¹  Cruvinel, K.L.¹  Embrapa Tabuleiros Costeiros, Aracaju¹  Dan, H.A.¹  Sandaniel, C.R.¹ 

关键词: Brachiaria decumbens;    Digitaria ciliaris;    Eleusine indica;    Brachiaria plantagineaand Cenchrus echinatus.;   

DOI  :  10.1590/S0100-83582010000100018

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 objective of this work was to evaluate the efficacy of ACCase-inhibitors (ariloxyfenoxypropionates and cyclohexanodiones), applied alone or in combination, in controlling the grass weed species Brachiaria decumbens, Digitaria ciliaris, Eleusine indica, Brachiaria plantaginea and Cenchrus echinatus in soybean crop. The study was carried out in the field in a randomized block design with four replicates. The following treatments were evaluated: clethodim (84  g  ha-1 ), clethodim + quizalofop-p-ethyl (48 + 40  g  ha-1), [clethodim + fenoxaprop-p-ethyl] (50 + 50  g  ha-1), sethoxydim (230  g  ha-1 ), tepraloxydim (100  g  ha-1 ), fluazifop-p-butyl (125  g  ha-1 ), haloxyfop-methyl (60  g  ha-1 ) and control (no herbicide). In the presence of the infesting weeds, soybean grain yield was significantly reduced. The highest efficiency of B. decumbens control was observed with the application of haloxyfop-methyl. Tepraloxydim was quite selective to B. decumbens. No treatment promoted a final control of D. ciliaris higher than 90%; nevertheless, the lowest efficiencies were verified with the application of sethoxydim and fluazifop-p-butyl. The only treatments that did not present a satisfactory control of E. indica were sethoxydim and [clethodim + fenoxaprop-p-ethyl]. The species most easily controlled by the herbicides evaluated was B. plantaginea. However, haloxyfop-methyl, tepraloxydim, clethodim and [clethodim + fenoxaprop-p-ethyl] presented the highest efficiency rates for controlling this weed. The addition of quizalofop-p-ethyl to clethodim significantly increased C. echinatus control The herbicides haloxyfop-methyl and tepraloxydim also presented a satisfactory control of this grass weed.

【 授权许可】

Unknown