Journal article

Nutrient uptake and apparent balances for rice-wheat sequences. III. Potassium

GM Panaullah, J Timsina, MA Saleque, M Ishaque, ABMBU Pathan, DJ Connor, PK Saha, MA Quayyum, E Humphreys, CA Meisner

JOURNAL OF PLANT NUTRITION | TAYLOR & FRANCIS INC | Published : 2006

Abstract

Potassium (K) nutrition of rice-wheat (RW) systems of the Indo-Gangetic Plain (IGP) of South Asia is important because of its role in productivity and the large quantities of this macronutrient that are extracted by such intensive cropping systems. Field experiments on the RW cropping sequence were conducted at three locations in Bangladesh with three soil types. Two fertilizer doses - farmers' practice (FP) and soil-test based (STB) - of nitrogen (N), phosphorus (P), K and other nutrients were combined with mungbean or maize as a third crop. The objective of the experiments was to detect K deficiency, if any, in rice, wheat, mungbean, and maize, and to compare the FP- and STB-based sequence..

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