More and more self-made biological pesticides are becoming more and more popular, especially in the process of flower planting. The pesticides are compiled to compile the most common top ten homemade bio-pesticides:
(1) Take 50 grams of tobacco leaves (such as tobacco stems, tobacco rods, cigarettes need to double), add about 1500 grams of water, soak for a day and night, in the soaking process, repeatedly licking several times, remove and filter. Add 0.1% neutral detergent powder to the filtrate and mix well to spray. Tobacco water can control pests such as aphids, red spiders, whiteflies, leafhoppers, thrips, cockroaches, and leaf-rolling moths. The main component of insecticide is nicotine.
(2) Pyrethrum water pyrethrum has a strong contact effect on pests and a weak stomach poison. The dried white flower pyrethrum is ground into a powder, and 50 g of powder is added without adding water 10-20 kg. After stirring and adding, a small amount of neutral detergent powder is added, and the mixture can be sprayed after being evenly mixed. The object of the metallurgy is basically the same as the tobacco water.
(3) Roten vines contain rotenone, which has a strong stomach toxicity and contact killing effect on pests. Grind the fish vine into a powder, take 50 grams of powder and add 15~35 kg of water, then add a small amount (about o.1%) of neutral laundry, mix and stir and spray. It can control aphids, red cockroaches, whitefly mites, leaf mites, military worms, tea caterpillars, locusts, moths, hawk moths, silver moths, turnips, etc.
(4) Tea seed cake Water tea seed cake contains saponin and alkaloids, and the effect on pests is mainly contact killing, and has stomach poisoning effect. The tea seed cake is ground and soaked in a small amount of boiling water for about one day and night, and then filtered and diluted with water for 25 to 35 times to spray, which can control pests such as aphids, flying locusts, snails, cockroaches, etc., diluted with water by about 100 times, and has certain prevention and control for rust. effect.
(5) Mandala water fresh grass printing 0 grams chopped, add water 5 grams dry for 30 minutes, filtered and sprayed, can control aphids, red spiders, sticky insects, corn bran and so on. It also has a certain inhibitory effect on the germination of rust spores.
(6) Castor water Take 50 grams of castor seeds and mash. Add 500 grams of water to soak for several hours, add a small amount of neutral detergent, add 4~6 kilograms of water, mix well and filter. It can control aphids, spider mites, chafers, and golden worms. The ramie leaf stalk is dried and ground into a powder and applied to the soil to control underground pests such as cockroaches.
(7) Garlic water will smash purple garlic, extract juice, add water 20~25 times, spray and spray immediately, it can be sprayed like snails, red spider, scale insect nymph with gray mold, root mold Sick and so on.
(8) Scallion water will smash the outer skin and the leaves of the onion, add water 10 times soak for several hours, filter and spray, can control aphids, soft insects, and can inhibit the spread of powdery mildew.
(9) Ginger fresh ginger smashed out the juice, adding water about 20~25 times spray, can inhibit the rot, coal smut and Other germ spores.
(10) Take 1 part of pepper in pepper water, add 5~10 times into the original solution, and then add about 10 times of water to spray, which can prevent mites, whitefly, leafhopper, nymph, mites and so on. The advantage of plant pesticides is that they are pollution-free and pollution-free, can be taken locally, and are easy to manufacture and low in cost. The shortcomings are low efficacy, short duration, and large dosage. Since most of the above-mentioned plant-based pesticides are still lacking in standardization in terms of production methods, usage ratios, and control targets, attention should be paid to the improvement of experience through continuous improvement of experience through self-practice.
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