【Plant Protection Technology】During the fruit expansion period in August, we must do these things right

Preface

In August, citrus, grapes, pears and other fruits enter the golden period of puffed fruit growth. Reasonable management measures, such as fertilization, irrigation and pest control, can provide sufficient nutrition and a good growth environment for the fruit, promote the full development of the fruit, increase the size and weight of the fruit, and improve the quality indicators such as sugar content, color and taste of the fruit.

01. Reasonable fertilization

● Balanced fertilization: Supplement medium and trace elements to enhance the toughness and strength of the peel, reduce the cracking rate and sweeten and color, and ensure the balance of the supply of nitrogen, phosphorus and potassium and other macroelements.

● Control the amount of nitrogen fertilizer: avoid excessive nitrogen fertilizer that will lead to the growth of branches and leaves, which will affect the expansion and quality of fruits.

02. Water regulation

Sufficient water supply requires a large amount of water during the fruit expansion period, so it is necessary to ensure that the soil is moist, but avoid dripping and wetting, so as not to cause fruit cracking. In the event of heavy rain, the water in the orchard should be removed in time to prevent the root system from being damaged by hypoxia.

03. Thinning the fruit and setting the fruit

● Removal of deformed fruits, diseased fruits and small fruits: ensure that the retained fruits have sufficient nutrient supply, and improve the overall quality and commerciality of the fruits. ● Reasonable amount of fruit retention: Determine the number of fruits according to the tree potential and crown size to avoid too many fruits and cause the tree to weaken.

04. Pest control

Strengthen monitoring, regularly inspect orchards, and detect signs of pests and diseases in a timely manner. Targeted prevention and control, regular inspections, precise use of drugs, and focus on preventing anthracnose, red spiders and other pests and diseases. For example, for citrus anthracnose, spray the corresponding fungicide in time; For citrus psyllids, effective insecticides are used for control.

05. Weed management

● Timely weeding: Avoid weeds competing with crops for nutrients and water.

● Grass cultivation: Proper retention of benign weeds can maintain soil moisture and improve the ecological environment of the orchard.

06. Fruit sunscreen

Install sunscreen netting in orchards with strong sunlight to reduce sunburn of fruits. Leaf-to-fruit ratio adjustment ensures that enough leaves shade the fruit from sunlight through proper pruning.

Epilogue

In the period of rapid fruit expansion, it is necessary to pay close attention to the situation of the orchard and carefully manage it to lay a good foundation for the high quality and high yield of the fruit.