Microbial pesticides are environmentally friendly bio-pesticide and have been very popular in recent years. There are many kinds of microbial pesticides, and now there are mainly bacteria, fungi, and virus insecticides.
Bacterial insecticides include Bacillus thuringiensis, Penicillium, etc., among which Bacillus thuringiensis (Bt) is a gastotoxic insecticide capable of producing a parasporal crystal toxin. Bacillus thuringiensis has different degrees of poisoning effects on various pests, such as cotton bollworm, beet armyworm, and small tiger.
Fungal insecticides are a contact microbial insecticide. The main types currently used are: Beauveria bassiana, Verticillium, and the like. Among them, Beauveria bassiana has a good effect on controlling heartworm and aphids. Paecilomyces lilacin can effectively control root-knot nematodes, and has good control effect on soybean cyst nematodes.
Viral insecticides are a group of insect-based virus groups. Nuclear polyhedrosis viruses and granulosis viruses are commonly used, mainly for biting pests such as Spodoptera litura and Pieris rapae.
Biocides work well, and proper treatment is very important.
First, it should be used at the right time. The insecticidal mechanism of biological insecticides is different from chemical pesticides , and it usually takes effect through infestation, parasitic accumulation, and effective stomach toxicity. At the time of application, it is necessary to grasp the egg hatching period or the larvae for the younger age. It can not only immerse the insects in the eggs or attach them to the egg shells, but also kills the larvae when they hatch, and can ensure that the pests die after feeding.
Secondly, bio-insecticides are mostly "active", and the correct application of the pesticide environment and the method of use are the key to its good control. When applying Suyun Golden Rod Insecticide, it is generally advisable to apply the application in the evening or cloudy days of warm and humid weather, and it is strictly prohibited to use it with the fungicide or alkaline pesticide at the same time or in combination.
Tips for China's pesticide network : Microbial pesticides should not be placed for a long time, should be used now, so as not to reduce the efficacy.
A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow. The modern ballcock was invented by José Antonio de Alzate y RamÃrez, a Mexican priest and scientist, who described the device in 1790 in the Gaceta de Literatura Méxicana.[1] It consists of a valve connected to a hollow sealed float by means of a lever, mounted near the top of the tank. The float is often ball-shaped, hence the name ballcock. The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow. This is an example of negative feedback and of proportional control.
Ball Cock, Brass Ball Bibcock, Ballcock Valve, Toilet Ballcock Valve
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