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Four key points to grasp in winter management of Pinellia ternata

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1. Check the seed tubers: Normally, the tubers of Pinellia ternata begin to take root and sprout about half a month after planting. Sometimes, due to low temperatures, tuber rot may occur, so the growth of the seed tubers should be checked in a timely manner. For spots where sprouts have still not emerged, the soil can be gently scraped open by hand or with a bamboo strip, wooden stick, etc. Any seed tubers that have not rooted or whose rootlets are yellow-black are inferior and should be dug out and replanted in a timely manner. 2. Prevent waterlogging and drought: If continuous overcast and rainy weather occurs in winter, the soil is prone to waterlogging and oxygen deficiency, which is not only unfavorable for the tubers of Pinellia ternata to take root underground, but also causes disease and rot. Therefore,

1. Check the seed tubers: Normally, the tubers of Pinellia ternata begin to take root and sprout about half a month after planting. Sometimes, due to low temperatures, tuber rot may occur, so the growth of the seed tubers should be checked in a timely manner. For spots where sprouts have still not emerged, the soil can be gently scraped open by hand or with a bamboo strip, wooden stick, etc. Any seed tubers that have not rooted or whose rootlets are yellow-black are inferior and should be dug out and replanted in a timely manner.

2. Prevent waterlogging and drought: If continuous overcast and rainy weather occurs in winter, the soil is prone to waterlogging and oxygen deficiency, which is not only unfavorable for the tubers of Pinellia ternata to take root underground, but also causes disease and rot. Therefore, attention should be paid to clearing ditches and draining water so that the field dries after the rain stops. If winter is dry, the tubers will dry up and shrink, affecting the growth of the underground part. Furrow irrigation can be used to irrigate, and the water in the ditches should be drained promptly after irrigation.

3. Clear weeds: During December in winter, take advantage of sunny days to carry out intertillage and loosening of the soil, and remove perennial weeds. Weeding should mainly be done by digging out weeds or pulling them by hand to prevent damaging the tubers of Pinellia ternata. In plots with severe weed problems, on a sunny day, 800-1000 grams of 10% glyphosate plus 60 kg of water per mu, or 150-250 milliliters of 20% gramoxone aqueous solution plus 50 kg of water per mu, can be sprayed for control.

4. Apply farmyard manure: Before severe cold arrives, apply 2500-3000 kg of decomposed pig and cattle manure plus 50 kg of decomposed cake fertilizer or 75 kg of plant ash per mu, evenly spread between the rows on the bed surface. This can not only increase fertilizer efficiency, but also preserve heat and moisture, ensuring that the tubers safely overwinter.

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