Utilizing enriched biochar based fertilizers for efficient nutrient management in direct seeded rice (Oryza sativa L.)
| dc.contributor.advisor | Chaturvedi, Sumit | |
| dc.contributor.author | Roy, Arkaprava | |
| dc.date.accessioned | 2019-12-07T06:33:45Z | |
| dc.date.available | 2019-12-07T06:33:45Z | |
| dc.date.issued | 2019-06 | |
| dc.description.abstract | A field experiment was conducted at Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during Kharif season, 2018 to assess utilization of enriched biochar based fertilizers for efficient nutrient management in direct seeded rice. The soil of the experimental site was sandy loam in texture with a bulk density of top 0-15 cm soil was 1.44 Mg/m3. The soil was neutral in reaction (pH 7.2), medium in soil organic carbon (0.65%), low in available N (176.6 kg/ha), high in available soil phosphorus (26.9 kg/ha) and potassium (281.1 kg/ha). The field capacity moisture content and PWP was 20 and 8 per cent, respectively. The experiment was laid out in randomized block design with eight treatments i.e. 100% RDF through conventional fertilizers, 75, 100 and 125% RDF through enriched biochar based fertilizers EB-1+UEB-1 and EB-2+UEB-2 and no fertilizer application as control replicated thrice. A lab experiment was carried out for determination of nutrients (NPK) release pattern of prepared enriched biochar based fertilizers. In lab experiment release kinetics study revealed that release pattern of nutrients (N, P and K) of enriched biochar based fertilizers were significantly lower than conventional fertilizers. Under field trial highest growth, yield parameters and yield of direct seeded rice were recorded under application of EB-2+UEB-2 at 125% fertility level. Application of EB-2+UEB-2 at 100% fertility level also gave at par yield with its application at 125% fertility level and significantly higher yield (13.5 per cent more) as compared to the application of conventional fertilizers at similar fertility level. Application of both the enriched biochar based fertilizers at 75% fertility level resulted in at par yield with the application of 100% fertility level through conventional fertilizers. Nutrients (N, P and K) uptake at different growth stages (30, 60 and 90 DAS) as well as at harvest by grain and straw were significantly higher under application of EB-2+UEB-2 at 125% fertility level. However, among these enriched biochar fertilizers application at 100% fertility level, EB-2+UEB-2 resulted in higher nutrients (NPK) use efficiencies as compared to the application of conventional fertilizers (29.5% more). Although the application of enriched biochar fertilizers increased the cost of cultivation due to its higher production cost, but with respect to its higher economic return, it gave B:C ratio 1.71. Therefore, the prepared enriched biochar based fertilizers EB-1 & EB-2 and UEB-1 & UEB-2 have slow release kinetics with respect to release pattern of N, P and K. Application of 100% RDF through EB-2+UEB-2 not only enhanced the productivity of direct seeded rice but also increased the nutrient (N, P and K) use efficiencies along with better economic benefit. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810137033 | |
| dc.keywords | biochar, organic fertilizers, nutrients, direct sowing, seeding, rice, Oryza sativa | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 155 | en_US |
| dc.publisher | G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand) | en_US |
| dc.research.problem | Rice | en_US |
| dc.sub | Agronomy | en_US |
| dc.subject | null | en_US |
| dc.theme | Nutrients | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | Utilizing enriched biochar based fertilizers for efficient nutrient management in direct seeded rice (Oryza sativa L.) | en_US |
| dc.type | Thesis | en_US |