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

Revision of Potassium Soil-test Interpretations and Fertilizer Recommendations

There is a long history of potassium (K) fertilization research in the North-Central Region. Sustained Iowa field research efforts have focused on developing soil-test K (STK) interpretation and studying the effect of K fertilization strategies on grain yield and STK. Because of changes in the soil-test K method used in Iowa, information published over time should be evaluated separately. Publi...

Crop Potassium Nutrition – Implications for Fertilizer Recommendations

effect of organic matter and potassium fertilizer on organic carbon stock and absorbable phosphorus of soil and onion yield

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potassium fertilizer recommendations through determination of mitscherlich-bray equation coefficients for irrigated wheat

to determine the coefficients of c1 and c in mitscherlich-bray equation, critical level and fertilizer recommendation for potassium (k) as by mitscherlich-bray (mb) equation, an experiment in a randomized complete block design of 5 treatments and 3 replications was carried out in 12 irrigated wheat (triticum aestivum l.) fields in sarpol-e-zohab region during the 2007-08 growing season. the tre...

Predicting soil potassium content

A linear mixed model, with non-stationary mean and covariance, for soil potassium based on gamma radiometry K. A. Haskard, B. G. Rawlins, and R. M. Lark Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK British Geological Survey, Keyworth, Nottingham NG12 5GG, UK Received: 29 January 2010 – Accepted: 2 March 2010 – Published: 16 March 2010 Correspondence to: R. M. Lark (murray.lark@bbs...