Peanut Moisture Management
Release Date:
2019-02-15
1. Focus on drought resistance: irrigate at the critical flowering–pod-setting stage, when peanuts have their highest water requirements; drought significantly reduces yield. Late-season drought accelerates leaf drop and leads to premature senescence. Closely monitor weather conditions, and irrigate promptly whenever drought strikes. Typically, begin watering when you observe peanut leaves turning pale and wilting around noon, to promote flowering and pegging, ensure an adequate number of viable flowers and pods, encourage pod expansion, and lay the groundwork for full‑filled pods. After the pod‑setting stage, avoid watering during the intense midday heat; instead, apply water along the furrows before 10 a.m. or after 3 p.m. to prevent peg rot and pod rot. Do not use flood irrigation. 2. Drain excess water promptly,
1. Focus on drought resistance and ensure timely irrigation during critical growth stages.
The flowering–pod-setting stage is the period when peanuts have the highest water requirements, and drought can significantly reduce yield. Drought during the later growth stages accelerates leaf abscission, leading to premature senescence. It is essential to closely monitor weather conditions and irrigate promptly whenever drought occurs.
Generally, when peanut leaves begin to turn pale and wilt around noon, watering should be applied promptly to promote flowering and pegging, ensure an adequate number of effective flowers and pods (pegs), encourage pod expansion, and lay the groundwork for full‑filled pods. After the pod‑setting stage, irrigate by following the furrows before 10 a.m. or after 3 p.m., avoiding the intense midday heat to prevent peg rot and pod rot. Flood irrigation is strictly prohibited.
2. Drain water promptly to prevent waterlogging damage.
The late growth stage of peanuts coincides with the rainy season, making them prone to waterlogging. Therefore, all localities must promptly clear and maintain drainage channels and construct effective drainage ditches. In the event of prolonged rainfall, timely drainage is essential to prevent fruit rot and root decay.
3. Promote water-saving irrigation technologies and advance cost-effective irrigation practices.
For mulched peanuts, intermittent irrigation is recommended; for bare‑ground‑planted peanuts, alternate‑furrow irrigation is advisable. These methods reduce deep percolation and soil evaporation, enhance soil aeration, and promote deeper root penetration, offering the dual benefits of water conservation and yield increase. Moreover, drip irrigation can deliver even greater water‑saving and yield‑boosting results.
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