ISSN : 0975-3710
EISSN : 0975-9107
S.P. SINGH1*, K.K. PAIKRA2, C.R. PATEL3
1ICAR - Krishi Vigyan Kendra, Raigarh, 496001, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh, 492012, India
2ICAR - Krishi Vigyan Kendra, Raigarh, 496001, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh, 492012, India
3ICAR - Krishi Vigyan Kendra, Raigarh, 496001, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh, 492012, India
* Corresponding Author : spsinghsahab@gmail.com
Received : 05-05-2018 Accepted : 11-05-2018 Published : 15-05-2018
Volume : 10 Issue : 9 Pages : 5958 - 5961
Int J Agr Sci 10.9 (2018):5958-5961
Keywords : Maize, Potato, STCR, FYM, Fertilizer Recommendations, Ready Reckoner
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to ICAR - Krishi Vigyan Kendra, Raigarh, 496001, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh, 492012, India
Author Contribution : All author equally contributed
Field experiments were carried out to investigate the soil test crop response-based fertilizer recommendation under integrated plant nutrient supply by following Ramamoorthy’s inductive approach of fertility gradients in Inceptisol at the Instructional Farm of Krishi Vigyan Kendra, Raigarh (C.G.). The experiments were conducted on maize (Zea mays L.) and potato (Solanum tuberosum L) during Kharif and Rabi 2016-17withwell developed fertility ingredients. The nutrient requirement (NR), contribution of nutrients from soil (CS), fertilizer (CF) and farm yard manure (CFYM) were computed using the data on soil test values, fertilizer nutrients doses, nutrient uptake and maize and potato yields. The amount of nutrient required (NR) to produce one quintal of maize grain yield was found to be 1.59 kg N, 0.32 kg P and 1.84 kg K. Similarly, 0.42 kg N, 0.11 kg P and 0.45 kg K were required to produce one quintal of tuber production. The percent contribution from fertilizer (CF) for N, P and K was estimated 41.84,28.28 and 140.33 and 31.27,22.06 and 82.93 percent for maize and potato crops, respectively. The percent contribution from soil (CS) was recorded as 22.53 for N, 52.67 for P and 26.40 for K in case of maize and 14.39 for N, 48.94 for P and 17.78 for K in case of potato crop. The percent contribution of organic source (CFYM) for N, P and K were recorded 21.76, 4.70 and 12.81 and 8.33, 3.50 and 19.60 for maize and potato crops, respectively. Based on the above basic parameters, soil test-based fertilizers adjustment equations were evolved for maize and potato crop to achieve a definite yield target. Ready reckoners chart for fertilizer N, P2O5 and K2O application based on the soil test values for specific yield targets of maize and potato were also prepared which are useful for the soil testing laboratories.
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