All water based products have plenty of nutrients and water to support microbe growth under favorable conditions. Microbes invade water based products from multi-point sources, such as contaminated raw materials, poor plant hygiene, untreated water, and not properly preserved recycling materials. While adding in-can preservatives into the products should not excuse a factory from Good Manufacturing Hygiene Practices (GMHP), proper use of in-can preservatives coupled with GMHP can dramatically minimize the chance of microbial tolerance development, and assure unspoiled products to customers.
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(1) Selection of disease-resistant cultivars When selecting a turf, turfgrass species and varieties with strong disease resistance and adapted to local climate should be selected. It is advocated that different types of grass seeds should be mixed and planted to establish lawns. Mixing and sowing of different varieties of the same turfgrass can also help inhibit the spread of diseases.
(2) Soil disinfection Soil disinfection can eliminate pathogens and pests in the soil. There are two methods, pharmaceutical and steam sterilization. Can be selected according to the specific circumstances.
(3) Seedling treatment When seeds are sown, use 0.1 to 0.2% of the dry weight of seeds for carbendazim or chlorothalonil, or use 0.5% formalin for one and a half hours. The germs on the surface of the seeds can also eliminate germs in the soil around the seeds, which can greatly reduce the infection rate of the seedlings.
(4) After the phytosanitary lawn is established, low-level bactericides are often used for prevention before the susceptibility season (summer season) arrives, and good results can be obtained. However, as much as possible to mix or alternately use a variety of fungicides, can not use a single drug on the same lawn for a long time to prevent the bacteria from producing resistance.
(5) Follow the 1/3 principle when trimming pruning. Avoid trimming too low and frequency too high. Lawn mower blade should be sharp, try to make the blade wound small. After pruning on a susceptible lawn, the blade must be disinfected before trimming the other lawn. Trim the cut grass to clear the lawn in time.
(6) Do not apply excessive amount of nitrogen fertilizer to lawn fertilization rationally. Adjust the supply ratio of nitrogen fertilizer and potash fertilizer, and keep the normal supply of potash fertilizer to reduce the occurrence of lawn diseases. Apply at least 2 full-rate fertilizers to the lawn each year.
(7) Proper irrigation and drainage Lawn irrigation should not be carried out in the warm evening. Therefore, when the turf is established, there must be certain drainage measures.
(8) To deal with the affected plants in time, always check the growth of the turfgrass and find that the susceptible plants should be removed or buried in a timely manner. At the same time, the diseased leaves and dead leaves on the remains and landing should be promptly removed and burned.
(9) Adjusting the occurrence of many diseases during sowing period, due to the influence of temperature, humidity and other environmental conditions, there is a certain period of onset, and the most in a certain period, serious if early or delayed sowing, can avoid the development period, to achieve The purpose of mitigation.
(10) Timely weeding and extermination of pests Weeds not only compete with turfgrass for survival conditions, but also provide a breeding ground for germs. The virus and some germs are transmitted by insects. Therefore weeds should be promptly removed to eliminate pests, which can effectively prevent or reduce the spread of diseases.
Strengthen Management Measures to Prevent and Treat Turf Diseases
Turf disease is the most troublesome problem for lawn managers. Once a large area of ​​the lawn has developed, the entire lawn can often be destroyed, causing incalculable damage. Therefore, lawn disease focuses on prevention, and it is very important to use management measures to control turfgrass diseases. The main measures are as follows: