Scope of application
Because glufosinate has the characteristics of broad herbicidal spectrum, rapid inactivation and degradation in soil, and low toxicity to non-target organisms, crops can be resistant to glufosinate through transgenic technology, so that glufosinate can selectively Kills weeds without harming crops. The researchers of Eggford Company isolated the bar gene from the strain of Streptomyces hygroscopicus and the pat gene from the strain of Streptomyces viridis. The two genes share 80% homology, and both encode glufosinate acetylase, an enzyme that inactivates glufosinate acetylation. By transferring these two resistance genes into crops, the crops can express glufosinate-ammonium acetylase, which inactivates the glufosinate-ammonium that enters the crops and reduces the harm of glufosinate-ammonium to crops.
The glufosinate-ammonium resistance gene has been introduced into more than 20 crops such as rice, wheat, corn, sugar beet, tobacco, soybean, cotton, potato, tomato, rapeseed, sugarcane, etc., and the glufosinate-resistant crops that have been successfully grown commercially The series Liberty Link includes almost all major crops. Bayer Crop Science, Dow AgroSciences, and Monsanto have all continued to develop glufosinate-resistant genetically modified crops, bringing glufosinate-ammonium to the market.
Glufosinate-ammonium has a wide herbicidal spectrum and has a good control effect on most annual or even perennial weeds in most farmlands. Can be used in orchards, vineyards, potato fields, non-arable land, etc. to control annual and perennial dicotyledonous and grass weeds, such as sagebrush, crabgrass, barnyardgrass, wild barley, ryegrass, foxtail, golden foxtail, Wild wheat, wild maize, duck sprouts, fenugreek, fescue, etc. It can also control broad-leaved weeds such as quinoa, amaranth, polygonum, camelina, nightshade, chickweed, purslane, pigtail, endive, field thistle, field bindweed, dandelion, etc. There is also a certain effect.
When the broadleaf grass is at the beginning of vigorous growth and the beginning of grass weeds, the dosage of 0.7 to 1.2 kg/ha is sprayed on the weed population, and the weed control period is 4 to 6 weeks. Extend the validity period. Potato fields should be applied before budding, or before harvesting, to kill stubble on the ground and facilitate harvesting. For the control of ferns, the dosage is 1.5 to 2 kg per hectare. Generally used alone, sometimes it can be mixed with simazine, diuron or 2 methyl 4 chlorine.