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- W4387606429 abstract "Abstract Potassium (K) has received less attention than nitrogen (N) and phosphorous (P) as a potential yield-limiting factor in cropping systems. Here we investigated the current K limitation in intensive cereal cropping systems of Southeast Asia based on nutrient balances, leaf nutrient status, long- and short-term fertilizer trials, and farmer surveys. We found that soil K alone cannot meet plant requirements and current fertilizer application is insufficient to avoid plant K deficiencies and large negative soil K balances in farmer fields. Removing the K limitation requires improved capacity to predict response to K fertilizer together with long-term, flexible fertilizer and crop straw management strategies. It is likely that similar K limitations have emerged in other world regions as a result of decades of intensive cropping with insufficient replenishment of potassium, which represent headwinds to closing yield gaps on existing farmland." @default.
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- W4387606429 date "2023-10-13" @default.
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- W4387606429 title "The challenge of alleviating potassium limitation in major cropping systems of Southeast Asia" @default.
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- W4387606429 doi "https://doi.org/10.21203/rs.3.rs-3283880/v1" @default.
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