Effect of Long-Term Application of Inorganic Fertilizers, Organic Manure, and Lime on Different Forms of Potassium in Soil under Maize-Wheat Cropping System
Madhuri Toppo, Asha Kumari Sinha, Ajay Kumar Upadhay, Prabhakar Mahapatra
International Journal of Plant & Soil Science · pp. 469–480 · Published 27 Nov 2023
10.9734/ijpss/2023/v35i224155Abstract
The field study was undertaken with the major emphasis on potassium fractionation and its contribution in acid alfisol soils as affected by adoption of continuous cropping, fertilization, and manuring under maize-wheat cropping system in same field over 62 years of crop cycles. The experiment consisted of fourteen treatments, replicated thrice times in a randomized block design, out of which nine treatments were selected for the present study. The selected treatments were as follows - control, T2-100% N, T3- FYM, T4-100% NP, T5-100% NPK, T6- 1/2(N+FYM) + P(A-X/2) + K(B-Y/2) (INM), T7-100% NPK + Lime where the lime application in LR once in 4 years, T8-Lime+ FYM+ P(A-X) + K(B-Y), T9-Lime+N. Surface soil (0-15cm) and subsurface soil (16-30 cm) samples were collected after the harvest of wheat in 2017-18 to observe the initial Physico-chemical properties. Different fractions of potassium, viz., water-soluble K, exchangeable K, available K, 1NHNO3K, non-exchangeable K, Lattice K, and Total K were analyzed for the study. There was a significant difference among the different treatments with respect to potassium fractions in 0-15 cm, and 16-30 cm layers. Moreover, K fractions were significantly decreased with increasing depth of soil. Results showed that the percentage contribution of different forms of K with regard to the total K in surface soil and subsurface soil followed as: Lattice K (68.75-78.11%) > Non – Exchangeable K (19.15-25.49%) > Exchangeable K (1.65-2.45%) >Water soluble K (0.18-0.62%). Application of N and P without K caused depletion of soil, water-soluble K, available K, exchangeable K, non-exchangeable K, and lattice K because of continuous omission of potassium content during the all crop growing stages or the simultaneous leaching nature of residual potassium under same field of the experiment. Therefore, the present investigation stresses the vital importance of the inclusion of organic manure and lime in the fertilizer schedule to maintain soil K dynamics over the long run under the maize-wheat cropping system.
References (5)
- 1 Statistical Procedures for Agricultural Research. [DOI]
- 2 Long-term effect of fertilizer and manure application on soil organic carbon storage, soil quality and yield sustainability under sub-humid and semi-arid tropical India [DOI]
- 3 Long-term fertilization, manure and liming effects on soil organic matter and crop yields [DOI]
- 4 Potassium Buffering Characteristics of Three Soils Low in Exchangeable Potassium [DOI]
- 5 Effect of Organic and Inorganic Sources of Phosphorus and Potassium on their Different Fractions under Potato-Radish Cropping Sequence in a Brown Hill Soil
Cited by 4
S. Sreethu, Gurleen Kaur, Vandna Chhabra · International Journal of Plant Production · 2026
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Chutao Liang, Xiaoqi Liu, Lei Feng · Soil Systems · 2023
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