钾肥用量建议:计算土壤钾存量重要吗?

IF 1.6 Q2 AGRICULTURAL ECONOMICS & POLICY

Journal of Agricultural and Applied Economics Pub Date : 2023-03-06 DOI:10.1017/aae.2023.1

Kimberly B. Oliver, M. Popp, Di Fang, John D. Anderson, N. Slaton, G. Drescher, T. Roberts, Jada M. Thompson

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引用次数: 0

摘要

在三种不同的钾肥推荐思想下，对盈利能力、产量和肥料使用进行了比较。在考虑和不考虑长期土壤试验K（STK）影响的情况下，将现有的农学、“建造和维护”速率建议（KE）与利润最大化速率进行比较。无论开始STK，K的使用在3年的过程中都是平衡的，无论意识形态如何。由于考虑长期STK不会改变最终STK，只会导致极小的产量效应，我们鼓励生产商使用比KE低3-11%的年度利润最大化K率，并在产量损失最小的情况下产生更多利润。

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Potassium Fertilizer Rate Recommendations: Does Accounting for Soil Stock of Potassium Matter?

Profitability, yield, and fertilizer use are compared across three different potassium (K) fertilizer rate recommendation ideologies. Existing agronomic, “build and maintain” rate recommendations (KE) are compared to profit-maximizing rates with and without taking long-run soil-test K (STK) implications into account. Regardless of starting STK, K use equilibrated over the course of 3 years irrespective of ideology. Since taking long-run STK into account did not alter ending STK and only led to a miniscule yield effect, we encourage producers to use annual profit-maximizing K rates that were 3–11% lower than KE rates and generated more profit with minimal yield loss.

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来源期刊

Journal of Agricultural and Applied Economics AGRICULTURAL ECONOMICS & POLICY-

CiteScore

3.30

自引率

5.30%

发文量

审稿时长

8 weeks

期刊介绍： Published on behalf of the Southern Agricultural Economics Association, the Journal of Agricultural and Applied Economics is a forum for creative and scholarly work in agricultural economics and related areas. Contributions on methodology and applications in business, extension, research, and teaching phases of agricultural and applied economics are equally encouraged. As of 2015 (Vol 47), articles are published on an open access basis.