Control methods of acaroid mites on lilies?
The control methods of acaroid mites on lilies are as follows: first, rotation for 4 years. When planting lilies along the slope, they should be planted from the bottom up to reduce the spread of germs. Second, select disease-free, mite-free and mechanical injury-free bulbs as seeds, or mixed with barnyard manure, or combined with irrigation Or use 2% isofenphos powder 667 square meters to mix 25 to 30 kilograms of fine soil into poisonous soil, or use 3% isosaliphate granules, or 3% furan granules, or 5% phoxim granules, or 5% Dianong granules, every 667 square meters 2.5 to 3 kg of soil treatment, can achieve good results, and control golden needle insects and mole cricket. Fourth, the seeds should be treated with chemicals. At present, the main agents used for seed dressing are 50% phoxim, 50% parathion and 20% isomarbophos, and their dosage is generally 30 to 40 for 1: water; 400 to 500 for seeds; and 25% phoxim capsules or 25% parathion capsules and other organophosphorus agents can also be used. Or mix seeds with 35% carbofuran seed coating agent of 2% seed weight. It can also be used as underground pests such as metallurgical needle worms and mole crickets. Fifth, poison valley. Every 667 square meters, use 25% parathion or phoxim capsule 150 to 200 grams mixed with millet and other bait 5 kg, or 50% parathion or phoxim EC 50 to 100 grams mixed bait 3 to 4 kg, scattered in the seed ditch, and treat mole cricket, golden needle worm and other underground pests.
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Physiological diseases of lily
Physiological disease, also known as abiotic disease, refers to the disorder of normal physiological metabolism caused by factors other than pathogens. The causes of physiological disorders may be due to internal factors such as lack of mineral elements, tissue aging, or environmental factors such as temperature, luminosity, abnormal gas composition and so on. 1. The typical symptoms of leaf burn are the formation of semicircular gangrene at the tip edge of the leaf, and sometimes the formation of yellowing or gangrene at the edge of the leaf or in the ununfolded or unfolded part of the young leaf.
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Several main diseases on lily
The main results are as follows: (1) Lily leaf blight, also known as lily gray mold, is a common disease. It mainly harms leaves and can also infect stems, buds and flowers. The disease spot on the leaf is round, oval, of different sizes, light yellow to light reddish brown, waterlogged. Under warm and humid conditions, the disease spot becomes thin and brittle, light gray and translucent, which can cause the whole leaf to die; the stem becomes brown or constricted, resulting in the collapse of the plant; when the young plant is infected, the growth point of the stem and leaf becomes soft, rot and die; the flower bud appears small brown at the initial stage of damage.
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