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Detailed Explanation of Key Garlic Spring Management Techniques

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I. Management during the regreening stage: After Awakening of Insects, garlic begins to regreen, so it should be watered and fertilized promptly. Along with watering, apply 20 kg of diammonium phosphate per mu or 25 kg of ternary compound fertilizer. Then carry out shallow hoeing to loosen the soil, raise the temperature, and preserve moisture. Around Qingming Festival, when yellow tips appear on the leaves, carry out the second topdressing promptly and increase the frequency of watering, generally watering once every 10-15 days, to promote plant growth. II. Management during the garlic scape growth stage: In early May, garlic scapes begin to differentiate. After the Beginning of Summer, garlic scapes enter a period of vigorous growth, and during this period fertilizer and water management should be increased.

I. Management during the regreening stage: After Awakening of Insects, garlic begins to regreen, so it should be watered and fertilized promptly. Along with watering, apply 20 kg of diammonium phosphate per mu or 25 kg of ternary compound fertilizer. Then carry out shallow hoeing to loosen the soil, raise the temperature, and preserve moisture. Around Qingming Festival, when yellow tips appear on the leaves, carry out the second topdressing promptly and increase the frequency of watering, generally watering once every 10-15 days, to promote plant growth.

II. Management during the garlic scape growth stage: In early May, garlic scapes begin to differentiate. After the Beginning of Summer, garlic scapes enter a period of vigorous growth, and during this period fertilizer and water management should be increased. When the garlic scapes have not yet emerged from the leaf opening, carry out the third topdressing, applying 25 kg of ternary compound fertilizer per mu. After the garlic scapes emerge from the leaf opening, water continuously to promote scape development with water. Around Grain in Ear, when the garlic scapes bend, harvest the scapes promptly.

III. Management during the bulb enlargement stage: After harvesting the scapes, the garlic cloves begin to enlarge, and water demand increases, so water promptly to keep the soil moist and prevent premature senescence; stop watering 5-7 days before garlic harvest to prevent excessive soil moisture, which can cause the garlic cloves to rot and the garlic heads to become loose.

IV. Pest and disease control: In spring, garlic often develops purple blotch and leaf blight. For purple blotch, 64% carbendazim-plus-mancozeb wettable powder at 500 times dilution, or 50% iprodione wettable powder at 600 times dilution can be used for control. For leaf blight, 70% mancozeb wettable powder at 600 times dilution or 90% fosetyl-aluminium at 500 times dilution can be used for control. The main insect pest is thrips, which can be controlled by spraying dimethoate emulsifiable concentrate at 800 times dilution.

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