Selectivity of clomazone and S-metolachlor applied after cassava pruning

Planta Daninha

N.v. Costa¹  D.c. Andrade¹  D.a. Sontag¹  C.a. Scariot¹  L.h. Tsuzuki¹ 

[1] ,Universidade Estadual do Oeste do Paraná Centro de Ciências Agrárias Marechal Cândido Rondon Paraná ,Brasil

关键词: Manihot esculenta;    microencapsulated;    weed;    clomazone;    S-metolachlor;    Manihot esculenta;    microencapsulado;    planta daninha;    clomazone;    S-metolachlor;   

DOI  :  10.1590/S0100-83582013000400024

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the selectivity of clomazone in two formulations and S-metolachlor applied on shoots of different sizes after pruning of 'Baianinha' cassava. The experiment was arranged in a randomized block design in a factorial 5 x 2 (5 treatments x 2 sizes of shoots after pruning - 10 and 33 cm) with four replications. The herbicides evaluated were: clomazone (encapsulated suspension - 900 g h-1), clomazone (encapsulated suspension - 1,080 g ha-1), clomazone (emulsifiable concentrate 900 g ha-1), S-metolachlor (1,920 g ha-1) and an untreated control. During the experiment, all plots were kept free of weed interference by hand weeding. It was concluded that both the formulations of clomazone and S-metolachlor were selective when applied on both the shoot sizes evaluated. However, the application of S-metolachlor on 33 cm shoots gave higher selectivity to 'Baianinha' cassava plants.

【 授权许可】

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