Prevention and cure method of tomato physiological diseases in summer
Because the tomato growing season is in high temperature and rainy season in summer, physiological diseases are the common diseases that affect the normal growth and development of tomato, and can increase the occurrence of tomato infestation diseases.
Control methods:
(1) Adhere to the principle of using basal fertilizer as the main principle and topdressing as the supplement, and appropriately increase the application amount of basal fertilizer. Through field investigation, the amount of basal fertilizer can account for 75% to 80% of the planned fertilization amount in the whole growth period, which has a good effect on enhancing plant growth and improving resistance.
(2) Apply formula fertilization, increase organic fertilizer, balance the application of nitrogen, phosphorus, and potassium fertilizers, apply trace element fertilizers in the application, strictly prohibit the use of excessive nitrogen fertilizers, apply more humic acid fertilizers with improved conditioning, strong buffering properties, and increase soil Permeability promotes root development.
(3) timely watering. The growth period of tomatoes in summer is in high temperature and rainy season. Pay attention to balanced water supply in the result period, timely watering and rowing, and prohibit long-term accumulation of water or drought in the field to ensure a balanced supply of water.
(4) Top dressing. Extra-root dressing is an effective method to supplement trace elements. When tomato lacks calcium, 1% superphosphate extract can be used to foliar spray fertilizer. When boron is lacking, a 0.2% to 0.5% borax aqueous solution can be sprayed on the foliar surface.
(5) Control pests. Aphids, whiteflies, and leafhoppers can be sprayed with 3% acetamiprid 750-fold liquid and 10% imidacloprid wettable powder 1500-fold spray.
Medton Medical , https://www.medtonmedical.com