Mistakes and Prevention of Application of Herbicides in Watermelon
In order to reduce and prevent the mistake of applying chemical herbicide to watermelon, the Chinese pesticide net Xiaobian reminds everyone that the following points should be noted when applying: Piping Accessories,Piping Tool Accessories,Pipe Fitting Accessories,Automatic Suction Water Filter Jiangsu Hida Marine Valve Co., Ltd , https://www.haidavalve.com
First, the correct choice of herbicides. There are many varieties of herbicides available for watermelon production. The most commonly used are 48% trifluralin EC, 25% herbicide ether wet powder, 33% weeding cream, 48% dilamine EC, 12.5% ​​grass extract EC, 15 % Stable to kill emulsifiable concentrate, 15% sturdy emulsifiable concentrate, 48% lanosterol, 10% grass emulsifiable concentrate.
Second, strictly control the dosage. 48% trifluralin 75-125 ml per mu, 25% herbicide ether 100-150 g per acre, 33% weeding 80-130 ml per mu, 48% dilamine 200 ml per mu, 12.5% ​​grass Can be 65-150 ml per acre, 15% stable to kill 75-130 ml per acre, 15% fine to kill 50-60 ml per mu, 48% cable per acre 150-200 ml, 10% grass per Acre 65-100 ml. 40-50 kg of water were separately exchanged and sprayed on the surface of the soil before the watermelon was transplanted. Among them, trifluralin is easy to decompose after seeing the sun. After spraying, the medicinal soil is evenly spread by using the gums to a depth of 5 cm, so that the effect can be fully exerted.
Third, due to the flexible application of time and place. The effect of applying herbicides on watermelon has great relationship with the ecological environment. For example, the application of herbicides in sandy loam is faster than that of clay, but it is safer to spray pesticides on sticky soils, and the concentration of sandy loam is too large to cause phytotoxicity. It is necessary to accurately grasp the dosage according to the soil. When the temperature is above 20 °C, the grass killing effect is better. When the temperature is not high in spring and autumn, the dosage should be increased appropriately. When the temperature is high in summer, the dosage should be reduced as appropriate. When the soil moisture is good, the efficiency of killing grass is high, and when the moisture is bad, the effect of killing grass is reduced. It should be chosen when the sensation is good.