Strawberry pests and cockroaches occur, teach you how to prevent and control science!
On December 1, 2017, the Zhejiang Provincial Plant Protection and Quarantine Bureau released information on crop pests and diseases, and proposed the current guidance on strawberry pest control.
At present, strawberries are in a large number of fruit-hanging periods, and early-maturing varieties such as Tianxian drunk and Ningfeng have begun to harvest. During this period, there were many types of pests and diseases, and the damage was heavy. Among them, the red ginseng root rot part of the field re-emergence; plus the previous rain is less, the calcium absorption is blocked, the strawberry plant has obvious calcium deficiency symptoms, the plant grows weak, the bacteria are easy to invade, the field leather rot, powdery mildew, gray mold Mixed. In addition, care should be taken to prevent the occurrence of pests and thrips, so as not to cause serious harm.
1. Strengthen field management and improve plant resistance. Timely removal of old leaves, diseased leaves, diseased fruits and diseased plants, and concentrated destruction outside the strawberry garden to reduce the spread of pathogens. Timely hydration of the garden, spraying the calcium fertilizer at the appropriate time to avoid the symptoms of calcium deficiency in the new leaves. Entering December, the temperature in the province will gradually decline, to prevent the strawberry from freezing at low temperatures. Before cooling and after the cold wave, the amino acid-soluble fertilizer and sodium nitrophenolate can be sprayed on the foliage to improve the cold resistance of the plant.
2. Scientifically control pests and diseases and reduce pests and diseases. Red middle column root rot and leather rot can be sprayed with 68% fine nail cream · manganese zinc water dispersible granules or 60% azole ether · Daisen water dispersible granules, focusing on plant base and root . Powdery mildew and gray mold can be sprayed with 38% oxazolidine-pyridyl suspension, 42.4% azole ether·fluoroamide suspension, etc., focusing on the disease center and surrounding plants. The cockroaches can be controlled by spraying with 110 g/L of acetazole suspension or 20% of butyl fluorofluoride suspension. The thrips can be sprayed with 60 g/L of the spinosyn suspension or 10% cyanamide suspension.
3. Rational use of pesticides to ensure the quality and safety of strawberries. It is recommended to select pesticides with different mechanisms of action to alternate rotation, strictly observe the safety interval of pesticides, and strictly prohibit the use of pesticides with restricted use. Stop using triazole fungicides during the low temperature period in winter to avoid phytotoxicity. In addition, according to the National Food Safety Standards for Maximum Residues of Pesticides in Foods (GB2763-2016), the maximum residue limit of dimethomorph on strawberries is 0.05 mg/kg, and dimethomorph is used with caution in strawberry harvesting. And its compound preparations, to prevent pesticide residues from exceeding the standard.
More pesticide knowledge , please pay attention to China Pesticide Network
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