Pay attention to control corn spot
Maize big spot disease is one of the main diseases of corn in our county. It has shown a tendency of heavy emphasis in recent years, and some susceptible varieties have occurred. According to the county phytosanitary phytosanitary inspection station in the county general survey from July 25 to 28, corn leaf spot disease has been widespread, the average diseased plant rate was 13.8%, close to the same period last year, the serious land disease rate was 47%, diseased leaves The rate is 21%. At present, it is mostly a lesion. Since the middle and late July, the temperature has been suitable for the occurrence of corn leaf spot (suitable temperature of 20-25°C), and in case of continuous rainy days, the disease has developed rapidly and the prevention and treatment are not timely and easy to cause disease pandemic. Hope that the townships immediately organize prevention and treatment. Control methods: 1. Agricultural measures: Increase phosphorus and potash fertilizers, increase plant disease resistance, and pay low attention to field drainage. 2. Chemical control: Amisite 1500-2000 times spray can achieve the effect of prevention, treatment and eradication before the disease occurs; 70% thiophanate-methyl WP can be used in the early stage of disease, 100 grams per acre and 50 kilograms of water. Spray, or 800 times spray of 40% grams of loquat cream. 50-75 kilograms of liquid per acre, sprayed every 7-10 days 1, even against 2-3 times.
Carbomer is an acrylic resin obtained by cross-linking pentaerythritol with acrylic acid. It is a very important rheological regulator. After neutralization, carbomer is an excellent gel matrix, which has important applications such as thickening suspension. According to the dry product calculation, including carboxylic acid group (-cooh) should be 56.0 % ~ 68.0%.
Common carbopol series include: Carbopol 940, 941, 934, 1342, 980, ETD 2020, AQUA sf-1, Ultrez 21, Ultrez 20, etc.
Carbomer,Carbopol,Carbopol 940, Carbomer 940, Carbomer 980, acrylic acid
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