Rice seedling and plant development as affected by increasing rates of penoxsulam under controlled environments

Planta Daninha

Andres, A.¹  Embrapa Clima Temperado, Pelotas¹  Melo, P.T.B.S.¹  UFPel¹  Lopes, N.F.¹  Moraes, D.M.¹  Concenço, G.¹  UFPel, Capão do Leão¹ 

关键词: initial establishment;    herbicide;    Oryza sativa.;   

DOI  :  10.1590/S0100-83582006000100017

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 】

Rice is a major staple in many countries. Weed control is one of the factors limiting higher rice yield. ALS (acetolactate synthase)-inhibiting herbicides are desirable weed control herbicides because of their high efficacy, low toxicity to mammalians, and low rates used. An important herbicide characteristic is high selectivity to the crop, since it facilitates fast crop establishment and greater crop advantage over the weeds. The objectives of this work were to study the effects of increasing rates of the ALS-inhibiting herbicide penoxsulam on seed integrity and germination, and seedling and plant development of rice cv. BRS Pelota under controlled laboratory and greenhouse conditions. The results showed that penoxsulam affected rice germination and seedling and plant growth at rates above 54 g a.i. ha-1, and that penoxsulam is safe for rice seedling development at the currently recommended rates.

【 授权许可】

Unknown