Apple tree rot disease: Eliminate the source of the disease and prevent it from expanding.
1, combined with pruning, cut off the diseased branches, saw the dead trees burned.
2. The patient department applied stinky oil (coal tar) for treatment. Explain: When treating the new disease with stinky oil, first use a knife to cut the diseased part and the health part, and then use the nail plate to make some small holes in the skin of the affected part, then apply a thin layer of oil.
Apple black shank disease: eliminate the source of disease and reduce the incidence.
1. After the pruning of the fruit trees is finished, wipe out the fallen leaves in the orchard, burn them or bury them below one foot.
2. Spray 3-5 degrees of lime sulfur mixture once the flower buds are inflated. Or spray thiophanate-methyl 50% WP 700-1000 times.
Apple flower rot: eliminate the source of disease and reduce the incidence.
1, continue to cut sick flowers, diseased leaves, diseased branches, collected and burned.
2. In the late April to early May, the orchard carries out a shallow diversion to eliminate germs growing on the ground.
Caterpillars: Cut eggs, incinerate or bury them deep, reducing insect damage. Combine the pruning, cut off the egg pieces and collect it for burning or smashing.
Pear Star Caterpillar (dumplings): eliminate overwintering larvae and reduce late damage.
1, scrape off the old skin on the trunk, collect and burn.
2, the main spray Kung Fu 2.5% EC. 0.5-1 g of agent per acre, watered 10-20 kg.
Red spider: eliminate the overwintering insects and reduce the damage.
3. Dig a half inch away from the topsoil around the trunk, and bury one foot below the ground. (Adults overwinter in old rock and soil)
Plum sweet-spotted insects: Elimination of overwintering larvae and reduction of fruit period hazards.
1. Search for overwintering insects at the cracks in the stems of plum trees.
2. In early April, spraying phoxim 50% EC 1000 times around the roots of the trees, each of which can spray 0.5-1 kg of liquid and prevent underground pests.
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