Crop yield and soil available potassium changes as affected by potassium rate in rice–wheat systems

• Published in: Field crops research Vol. 214; pp. 38 - 44
• Main Authors: Lu, Dianjun, Li, Changzhou, Sokolwski, Eldad, Magen, Hillel, Chen, Xiaoqin, Wang, Huoyan, Zhou, Jianmin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2017
• Subjects: ammonium acetate; Apparent K balance; application rate; arable soils; boiling; cropping systems; field experimentation; grain yield; K depletion; nitric acid; Potassium; potassium fertilizers; rice; sodium; Soil available K; Soil-extractable K; wheat; TAKC; Apparent K balance; Soil available K; FKP; K; HNO3; NaTPB; K depletion; Soil-extractable K; Potassium; NH4OAc

•We determined crop yield and soil K changes in a K deplete experiment.•Wheat yield loss was much higher than rice in unfertilized plot.•Soil K changes for NaTPB was more close to the theoretical soil available K changes. Large areas of the arable soils of the world are deficient in potassium (K) du...