Pretilachlor is a selective – systemic agent to combat rice weeds from the chlorine group that inhibit the cell division and prevent the synthesis of fatty acids with long chain . in order to control the weed species , one – year – old leaf ( barnyard grass ) and some other weeds such as and were used as pre – vegetative growth in rice fields . this herbicide should be used in three days before planting and seven days after transplanting
And the barnyard grass should not be before two leaves . to consume , the outlet of the field water should be closed and the farm was water to fill the entire surface of the farm and then sprayed the grass with a uniformly distributed water . this herbicide is absorbed by ( radical of fresh herb ), and reduced the uptake and uptake of roots . along with absorbing water in the soil of rice field , the effect of this fungicide was also destroyed . application of this fungicide in rice direct cultivation farms may damage the crop . the degree of toxicity of this compound ( ld50 ) is 6099 mm / kg . its shelf life is about 30 days . this compound is toxic to – toxic .
the amount and method of Pretilachlor
