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Potassium carryover dynamics and optimal application policies in cotton production.

机译:棉花生产中钾的残留动态和最佳施用策略。

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摘要

Information about soil nutrient carryover dynamics can assist cotton producers with the optimal management of potassium (K) fertilizer. Optimal K management promotes cotton plant health, may decrease input costs, and increases cotton lint yields. A dynamic programming model was developed to determine optimal K application rates and economic returns under different soil information scenarios based on cotton yield response to K fertilizer and fertilizer carryover estimates from a multi-year field trial. A Monte Carlo analysis was conducted to simulate the impact of stochastic input and lint prices and cotton yield on K management over a five-period planning horizon. Results suggest that soil test data could provide important information about K carryover potential, which may lead to more efficient fertilizer use and higher profit margins for cotton producers.
机译:有关土壤养分残留动态的信息可以帮助棉花生产者最佳管理钾肥。最佳的钾肥管理可促进棉株健康,可降低投入成本,并增加棉绒产量。建立了动态​​规划模型,根据棉花对钾肥的产量响应和多年田间试验的肥料残留估算,确定了在不同土壤信息情景下最佳钾肥施用量和经济效益。进行了蒙特卡洛(Monte Carlo)分析,以模拟随机输入,皮棉价格和棉花单产对五个时期计划范围内的钾肥管理的影响。结果表明,土壤测试数据可以提供有关钾素结转潜力的重要信息,这可能会导致更有效的肥料使用和棉花生产者更高的利润率。

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