SITE SPECIFIC NUTRIENT MANAGEMENT IN RICE-BLACKGRAM SEQUENCE

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dc.contributor.advisorMARTIN LUTHER, Dr. M.
dc.contributor.authorMOUNIKA, DONDAPATI
dc.date.accessioned2021-12-07T06:47:06Z
dc.date.available2021-12-07T06:47:06Z
dc.date.issued2021-12-07
dc.descriptionSITE SPECIFIC NUTRIENT MANAGEMENT IN RICE-BLACKGRAM SEQUENCEen_US
dc.description.abstractA field experiment was conducted at the Agricultural College farm, Bapatla, during kharif and rabi 2017-18 and 2018-19 to study the “Site specific nutrient management in rice- blackgram sequence”. The experiment was conducted with variety BPT-5204 in a Randomized Block Design with ten treatments and three replications. The treatments comprised of, Recommended Dose of Fertilizer (T1), Soil test based fertilizer recommendation(T2); Targeted yield fertilizer recommendations for 5.5 tons ha-1 (T3) , 6.5 t ha-1 (T4) and 7.5 t ha-1 (T5) ; Treatment T1 + FYM @ 10 t ha-1 (T6); Treatment T2 + FYM @ 10 t ha-1 (T7); Treatment T3 + FYM @ 10 t ha-1 (T8); Treatment T4 + FYM @ 10 t ha-1 (T9); and Treatment T5 + FYM @ 10 t ha-1 (T10). The experimental soil was clay loam in texture, slightly alkaline in reaction, non saline, low in available nitrogen, low in organic carbon, high in available phosphorus and potassium. The application of nutrients was done following the soil test based fertilizer recommendations as per the treatment. Target yield fertilizer recommendations were based on using the target yield equations developed for Krishna Godavri agro ecological region. Significantly higher plant height, drymatter accumulation and number of tillers m-2 were recorded with soil test based fertilizer recommendation with 10 t ha-1 FYM application which was at par with soil test based fertilizer recommendation alone and 7.5 t ha-1 targeted yield recommendation along with FYM (T5 and T10), and RDF with FYM (T6). Application of STFR+FYM application (T7) resulted in higher number of panicles m -2 and filled grains panicle-1 , which were comparable with that of soil test based fertilizer recommendation alone (T2), 7.5 t ha-1 targeted yield fertilizer recommendation with FYM (T10) and found significantly superior over other targeted yield fertilizer recommendation treatments (T3, T4, T9 andT8).Grain yield of rice was significantly higher with soil test based fertilizer recommendation with 10 t ha-1 FYM application which was statistically at par with soil test based fertilizer recommendation alone (T2) and 7.5 t ha-1 targeted yield fertilizer recommendation with FYM (T10) compared to the rest of the treatments. Straw yield of rice recorded with STFR application with 10 t ha-1 FYM (T7) was significantly the highest, but comparable with most of the treatments except treatments 5.5 t ha-1 target yield recommendation (T3 ) and with FYM ( T8 ). Uptake and content of N, P and K in grain and straw at harvest & soil N, P and K status after rice were found significantly higher with the treatments that received soil test based fertilizer recommendation with 10 t ha-1 FYM application, followed by soil test based fertilizer recommendation (T2). Fertilizer use efficiency (FUE) was significantly the highest with application of 5.5 t ha-1 target yield recommendation with FYM (T8) compared to all other treatments. Application of soil test based fertilizer recommendation (T2) recorded the highest returns per rupee investment and found significantly superior to the rest of the treatments. Residual effect of different integrated fertilizer applicationto rice revealed that significant increase in plant height, drymatter accumulation, number of pods per plant with soil test based fertilizer recommendation with 10 t ha-1 FYM application which was on a par with soil test based fertilizer recommendation alone and superior to fertilizer application through targeted yield fertilizer recommendations. Test weight recorded with STFR fertilizer application with FYM (T7), STFR fertilizer application alone (T2) and targeted yield (7.5 t) fertilizer recommendation with FYM (T10) were significantly higher compared with remaining treatments. Soil test fertilizer recommendation application with FYM (T7), imposed to rice resulted in significantly higher seed yield and haulm yield of no till blackgram over other treatments. The highest NPK uptake and content after harvest of blackgram was observed with STFR fertilizer recommendation with 10 t ha-1 FYM followed by STFR fertilizer recommendation alone and 7.5 t ha-1 target yield recommendation with FYM(T10) and without FYM (T5). The highest gross returns are recorded with the residual effect of treatment STFR fertilizer application with FYM (T7) and found at par with that obtained from the treatments T10 , T2 , T5. Maximum rice equivalent yield of blackgram as well as system productivity of rice-blackgram sequence was observed with STFR application with FYM (T7) which was closely followed by incorporation of STFR fertilizer application alone (T2). Considering the overall system productivity of rice –blackgram sequence, net returns and return per rupee invested were recorded with STFR fertilizer application alone (T2) followed by 7.5 t ha-1 targeted yield fertilizer recommendation alone (T5). Overall soil test based fertilizer recommendation with FYM followed by soil test based fertilizer recommendation alone found superior in increasing growth, yield and maximum returns in rice blakgram sequence; however, in consideration of overall system productivity and economics, soil test based fertilizer recommendation alone proved superior in rice -blackgram cropping sequence.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810178732
dc.keywordsSITE SPECIFIC NUTRIENT MANAGEMENT IN RICE-BLACKGRAM SEQUENCEen_US
dc.language.isoEnglishen_US
dc.pages229en_US
dc.publisherAcharya N.G. Ranga Agricultural University, Gunturen_US
dc.subAgronomyen_US
dc.themeSITE SPECIFIC NUTRIENT MANAGEMENT IN RICE-BLACKGRAM SEQUENCEen_US
dc.these.typePh.Den_US
dc.titleSITE SPECIFIC NUTRIENT MANAGEMENT IN RICE-BLACKGRAM SEQUENCEen_US
dc.typeThesisen_US
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