Safe isolation period for pesticides used on vegetables

In the practice of vegetable cultivation, many vegetable farmers often only pay attention to the control effect when using pesticides to control vegetable diseases and insect pests. They do not pay attention to the safety interval before the market is listed. As a result, the pesticide residues on vegetables exceed the standard, which seriously affects consumers. Healthy body. In order to enable consumers to eat safe and safe vegetables, the safe interval between the use of commonly used pesticides on vegetables is as follows:
1 Fungicide: 75% chlorothalonil wettable powder 7d, 77% can kill wettable matching powder 3~5d, 500/0 phlegm wettable powder 4~7d, 70% methyl thiophanate WP 5-7d, 50% Nongliling WP 4-5d, 50% Garry 58% Phytophthora Manganese Zinc WP 2~3d, 64% antivirus WP 3-4d.

2. Insecticide: 10% cypermethrin EC 2~5d, 2.5% bromomethrin 2d. 2.5% Kung Fu EC 7d, 5% Fuling EC 3d. 5% anti-Pu Wei WP 6d, 1.8% Aifu factory emulsifiable oil 7d, 10% fast killing emulsifiable oil 3d, 40.7% lesbian emulsifiable oil 7d, 20% anti-sweeping emulsifiable oil 3d, 20% keto Pyrethroid emulsifiable concentrate 5d, 35% euthionine 7d, 20% fenpropathrin emulsifiable concentrate 3d, 10% mazypone emulsifiable concentrate 7d, 25% quetiapine emulsifiable concentrate 9d, 50% anti-Puwei WP 6d, 5 % Duobao WP 7d.

3. Acaricide: 50% bromofluoride EC 14d, 50% Tolk WP.

Ball Cock

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 Ramírez, 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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