Low doses of haloxyfop-methyl in black oat

Ciência Rural

Rossetto, Maria Rosecler Miranda¹  Velini, Edivaldo Domingues¹  Carbonari, Caio Antônio¹  Trindade, Maria Lúcia Bueno¹  Jasper, Samir Paulo¹ 

[1] Universidade Estadual Paulista, Botucatu, Brazil

关键词: Avena strigosa;    haloxyfop-methyl;    levels of lignin;    growth stimulus;   

DOI  :  10.1590/0103-8478cr20140616

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

One of the major constraints to sustainable of the tillage is the rapid decomposition of dry the matter. One of the mechanisms known to facilitate this process is the interference in pathways of polymers of lignin from tests of application of low doses of herbicide based on the relation that higher the content of the lignin greater the resistance to degradation. With this purpose, the herbicide Verdict * R (haloxyfop-methyl) was used to verify the effect of low doses at the height of the plants, productivity of dry matter and in the metabolism of the lignin in plants of black oat. Preliminary tests in the greenhouse were realized for adjustments ​​to the best low doses to be applied in the definitive experiment in the production area. The results obtained were 24% of increase in productivity in the experiments conducted in greenhouse, from the application of 3.125g of the active ingredient of the haloxyfop-methyl per hectare, in this subdose no changes was observed in growth and content of lignin in plants of black oat. In the field, the concentration of 2.5g i. a. ha-1 of haloxyfop-methyl decreased in 9% the lignification rate without interfering with the height and productivity of the plants, this being favorable to the degradation rate of stubble tillage on outcome

【 授权许可】

Unknown