EVALUATION OF PRESCRIPTION BASED FERTILIZER RECOMMENDATIONS IN SYSTEM OF RICE INTENSIFICATION (SRI) IN WET TEMPERATE ZONE OF HIMACHAL PRADESH

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dc.contributor.advisorSharma, Sanjay K.
dc.contributor.authorMITTAL, SHREYANSH
dc.date.accessioned2021-02-11T07:44:44Z
dc.date.available2021-02-11T07:44:44Z
dc.date.issued2016-07-05
dc.description.abstractA field experiment was conducted during kharif 2015 at the Experimental Farm of Department of Soil Science, CSK HPKV, Palampur to study the effect of different approaches of fertilizer application on growth parameters and productivity; soil physico-chemical properties; nutrients uptake and economics of rice under SRI. There were eight treatments (control, farmers‟ practice, general recommended dose, soil test based, yield targets 3.5, 4.0, 4.5 and 5.0 t ha-1 replicated thrice in a randomized block design (RBD). The soil of experimental field was silty clay loam in texture, acidic in reaction ( pH 5.5), high in organic carbon (11.2 g kg-1 ), medium in available N (320 kg ha-1 ), high in available P (30 kg ha-1 ), low in available K (112 kg ha-1 ) and sufficient in micronutrients. Soil samples (0-0.15 m) were collected before sowing, at 50% flowering and at harvest for chemical analysis. Plant samples were collected at 50% flowering and harvest and analyzed for N, P, K contents whereas, micronutrients (Fe, Mn, Zn and Cu) concentration in grain and straw at harvest was also determined after harvest of crop. Growth parameters and yield attributes were also recorded at specified intervals. All the levels for prescription based fertilizer application gave significantly higher grain and straw yield as compared to other approaches of fertilizer application barring few exceptions. Further, treatment for yield target of 5.0 t ha-1 resulted in maximum growth (plant height, total number of effective tillers, panicle length, 1000 grain weight, spikelet fertility percentage, number of grains per panicle), grain (4.46 t ha-1 ) and straw (10.03 t ha-1 ) yield. Targeted yield treatments significantly increased the nutrients uptake over other approaches of fertilizer application. The status of N, P and K was higher in STCR based fertilizer treatments at 50% flowering as well as at harvest of the crop. The STCR based fertilizer application treatments excelled all other approaches of fertilizer application in terms of net returns and benefit cost ratio. However, STCR approach for transplanted rice worked satisfactorily up to yield target of 4.0 t ha-1 beyond which deviation in yield from targeted yield was more than 10 per cent. Soil test based and general recommended dose of fertilizers recorded better plant growth and yield, and increased the nutrients uptake and N, P and K status in soil as compared to the farmers‟ practice and control.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810161170
dc.keywordsrice, fertilizer, yield, productivityen_US
dc.language.isoEnglishen_US
dc.pages96en_US
dc.publisherCSHHPKV Palampuren_US
dc.subSoil Sciencesen_US
dc.themecrop productivityen_US
dc.these.typeM.Scen_US
dc.titleEVALUATION OF PRESCRIPTION BASED FERTILIZER RECOMMENDATIONS IN SYSTEM OF RICE INTENSIFICATION (SRI) IN WET TEMPERATE ZONE OF HIMACHAL PRADESHen_US
dc.typeThesisen_US
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