What are the main farming arrangements for tea farmers in August
In August, the hot climate favors the occurrence of pests and diseases. At present, the focus of tea farming is the prevention, rescue and control of drought and heat damage in tea gardens and pest and disease control.
Prevention and rescue of drought and heat damage: Under the attack of high temperature and drought, tea plants will show symptoms of drought and heat damage such as scorched spots, scorched leaves, and shrinkage of terminal buds and tender stems after about 8-10 days, especially in young tea gardens, which are more severely affected.
Preventive measures:
First, timely plowing and hoeing. Timely weeding can reduce evaporation of surface soil moisture and is an effective measure to prevent drought. Production practice has proven that before the hot weather begins, if there is a possibility of drought, you should immediately weed and loosen the soil when the weather improves after rain. Never do this during a drought period, causing tea plants (especially young ones) to suddenly be exposed to the sun and die.
Second, laying grass. Laying grass on both sides of the tea plants helps lower the ground temperature, keep the soil moist, store water, and suppress weeds. It is a good method for preventing drought and preserving water.
Rescue measures: For tea plants that have already suffered drought and heat damage, active rescue measures should be taken. For the dead branches and dry leaves of damaged tea plants, after the drought disappears, pruning of varying degrees should be carried out according to the damage situation. Timely apply additional quick-acting nitrogen fertilizer and potassium fertilizer to cultivate autumn shoots and restore the vitality of the tea plants.
Pest and disease control: The main pests at present are the fourth generation of tea geometrid, the smaller green leafhopper (second peak), and the pink tea rust mite. The diseases include tea gray blight and tea anthracnose.
The control agents and dosages are as follows:
Fourth generation of tea geometrid: Kungfu 20-25ml/mu; Decis 20-25ml/mu; Saidan 60ml/mu; Bt preparation 600-1000 times.
Smaller green leafhopper (second peak): 25% buprofezin 30g/mu; 10% imidacloprid 15g/mu.
Tea gray blight: 75% chlorothalonil 75-100g/mu; 50% carbendazim, 50% thiophanate-methyl 75-100g/mu.