Detailed Explanation of Pest Control Methods During Peanut Growth
I. Causes of Iron Deficiency in Peanuts Peanut is one of the crops relatively sensitive to the iron element. Although iron is not a component of chlorophyll, it is an indispensable condition for chlorophyll synthesis, a constituent of the cytochrome oxidase and peroxidase related to respiration, and participates in the oxidation-reduction processes within the plant. Due...
White grubs are the larvae of scarab beetles, commonly known as "old mother worms." The main species harming crops include the dark black chafer, the copper-green chafer, the hairy yellow chafer, the black velvet chafer, and others, among which the dark black chafer and the copper-green chafer are widespread, most numerous, and cause severe damage, making them the dominant populations among white grubs. Adults like to feed on peanut and soybean leaves, as well as the leaves of poplar, willow, elm, pagoda tree, and other trees, hiding by day and emerging at night. The dark black chafer lays eggs from early July to late July, while the copper-green chafer's egg-laying period is from mid-June to mid-July. In terms of control measures, a strategy combining adult control with larval control, the sowing period with the growth period, and manual capture of adults with pesticide control is adopted, so as to eliminate white grubs before they cause damage. Agricultural control: 1. Intensive cultivation, deep plowing and fine harrowing, mechanical killing of insects. 2. Rational fertilization, using decomposed organic fertilizer. 3. Timely watering; when the soil moisture is in a saturated state, it affects egg hatching and the survival of young larvae. 4. Clearing weeds, and picking up larvae while plowing.
Chemical control: 1. During the sowing period, use chemicals to treat the soil and treat seeds with chemicals. 2. During the adult stage, Kung Fu, Decis, and high-efficiency compound insecticides can be sprayed to kill adults, and tree branches dipped in pesticide can also be used to trap and kill them. 3. During the growth period, 3% methyl isothiophos or carbofuran granules can be used, mixed with fine soil and broadcast around the plants, then buried into the soil along with hoeing; the closer the chemical is to the roots, the better the effect. Alternatively, 48% Lorsban emulsifiable concentrate 200-250 milliliters, diluted with 200-250 liters of water, can be poured around the peanuts infested by white grubs, which is a very good remedial measure.