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http://krishi.icar.gov.in/jspui/handle/123456789/36031| Title: | Effect of long‐term fertilization and manuring on potassium release properties in a Typic Ustochrept |
| Other Titles: | Not Available |
| Authors: | Sanjay Srivastava, T Raghavareddy Rupa, Anand Swarup, Dhyan Singh |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::Indian Institute of Soil Science ICAR::Indian Agricultural Research Institute |
| Published/ Complete Date: | 2002-06-01 |
| Project Code: | Not Available |
| Keywords: | soil potassium kinetics |
| Publisher: | WILEY‐VCH Verlag GmbH |
| Citation: | Journal of plant nutrition and soil science (1999). = Zeitschrift für Planzenernährung und Bodenkunde (1999). 2002, Vol 165, Num 3, pp 352-356, 5 p ; ref : 16 ref |
| Series/Report no.: | Not Available; |
| Abstract/Description: | Abstract A long‐term fertilizer experiment, over 27 years, studied the effect of mineral fertilizers and organic manures on potassium (K) balances and K release properties in maize‐wheat‐cowpea (fodder) cropping system on a Typic Ustochrept. The treatments consisted of control, 100% nitrogen (100% N), 100% nitrogen and phosphorus (100% NP), 50% nitrogen, phosphorus, and potassium (50% NPK), 100% nitrogen, phosphorus, and potassium (100% NPK), 150% nitrogen, phosphorus, and potassium (150% NPK), and 100% NPK+farmyard manure (100% NPK+FYM). Nutrients N, P, and K in 100% NPK treatment were applied at N: 120 kg ha—1, P: 26 kg ha—1, and K: 33 kg ha—1 each to maize and wheat crops and N: 20 kg ha—1, P: 17 kg ha—1, and K: 17 kg ha—1 to cowpea (fodder). In all the fertilizer and manure treatments removal of K in the crop exceeded K additions and the total soil K balance was negative. The neutral 1 N ammonium acetate‐extractable K in the surface soil (0—15 cm) ranged from 0.19 to 0.39 cmol kg—1 in various treatments after 27 crop cycles. The highest and lowest values were obtained in 100% NPK+FYM and 100% NP treatments, respectively. Non‐exchangeable K was also depleted more in the treatments without K fertilization (control, 100% N, and 100% NP). Parabolic diffusion equation could describe the reaction rates in CaCl2 solutions. Release rate constants (b) of non‐exchangeable K for different depth of soil profile showed the variations among the treatments indicating that long‐term cropping with different rates of fertilizers and manures influenced the rate of K release from non‐exchangeable fraction of soil. The b values were lowest in 100% NP and highest in 100% NPK+FYM treatment in the surface soil. In the sub‐surface soil layers (15—30 and 30—45 cm) also the higher release rates were obtained in the treatments supplied with K than without K fertilization indicating that the sub‐soils were also stressed for K in these treatments. |
| Description: | Not Available |
| ISSN: | 1436-8730 |
| Type(s) of content: | Research Paper |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Journal of Plant Nutrition and Soil Science |
| NAAS Rating: | 8.08 |
| Volume No.: | 165 |
| Page Number: | 352-356 |
| Name of the Division/Regional Station: | Not Available |
| Source, DOI or any other URL: | Not Available |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/36031 |
| Appears in Collections: | NRM-IISS-Publication |
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