Look at the land on the cultivation of fertile, thick soil, trimming should be light; thin soil, pruning should be heavy.
Look at the trees for the young trees, select the appropriate branches to do the backbone branches, generally not short cut, and remove the weak branch and Wang branch with the same direction in the vicinity; the results of the cultivation and renewal of the branch group, the mother branch in 1/3 results In the lower part, there is a short cut at the lateral buds, which is reserved as a preparation branch to overcome the phenomenon of size and annual result; for the aging tree, it is necessary to retract the branch (reserve the pile in the fifth to the seventh year) and promote new techniques to re-form the crown.
See pests on the persimmon keratoses, persimmon worms serious harm, debilitating tree vigor, to heavy pruning; the other hand, light pruning. Weak branches, dead stems, and overlapping branches should be removed from the base.
Cypermethrin
It is a synthetic pyrethroid used as an insecticide in large-scale commercial agricultural applications as well as in consumer products for domestic purposes. It behaves as a fast-acting neurotoxin in insects. It is easily degraded on soil and plants but can be effective for weeks when applied to indoor inert surfaces. Exposure to sunlight, water and oxygen will accelerate its decomposition. Cypermethrin is highly toxic to fish, bees and aquatic insects, according to the National Pesticides Telecommunications Network (NPTN). It is found in many household ant and cockroach killers, including Raid and ant chalk.
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