SOIL HEALTH AND PRODUCTIVITY OF GROUNDNUT AS INFLUENCED BY INTEGRATED NUTRIENTMANAGEMENT UNDER RAINFED ALFISOLS
dc.contributor.advisor | NAGAVANI, A.V. | |
dc.contributor.author | NARAYANA SWAMY, GUTTA | |
dc.date.accessioned | 2018-08-13T05:44:38Z | |
dc.date.available | 2018-08-13T05:44:38Z | |
dc.date.issued | 2017 | |
dc.description | D5500 | en_US |
dc.description.abstract | Present investigation entitled ‘Soil health and productivity of groundnut as influenced by integrated nutrient management under rainfed alfisols’ was carried out for two consecutive kharif seasons of 2014 and 2015 at Agricultural Research Station, Ananthapuramu, Acharya N.G. Ranga Agricultural University, Andhra Pradesh. The investigation comprised of two blocks one is under rainfed condition and second is under protective irrigated situation. Experiment was laid out in randomized block design, with three replications. The treatments comprised of eleven different combinations of organic and inorganic sources of nitrogen viz., Control (no organics and inorganics) (T1), recommended dose of fertilizer (T2), 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM (T3), 100 per cent nitrogen through FYM (T4), 50 per cent nitrogen through urea + 50 per cent nitrogen through leaf compost (T5), 100 per cent nitrogen through leaf compost (T6), 50 per cent nitrogen through urea + 50 per cent nitrogen through sheep manure (T7), 100 per cent nitrogen through sheep manure (T8), 100 per cent nitrogen through sheep penning (T9), 100 per cent nitrogen through enriched groundnut shells (T10) and 50 per cent nitrogen through urea + 50 per cent nitrogen through enriched groundnut shells (T11). The test variety of groundnut used in the present investigation was ‘Kadiri-6’. Different combinations of organic and inorganic sources of nitrogen exerted significant influence on the growth parameters, yield attributes, yield, economic returns, soil physical properties, moisture content of soil, microbial load and nutrient uptake of groundnut as well as post-harvest soil fertility status both under rainfed and protective irrigation conditions. Under rainfed condition, the tallest plants with largest leaf area and highest dry matter production in groundnut were produced with the supply of 100 per cent xx N through sheep penning (T9) at all the stages of crop growth, which was at par with 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM (T3) and recommended dose of fertilizer (T2), which was inturn, comparable with supply of 50 per cent nitrogen through urea + 50 per cent nitrogen through leaf compost (T5) under protective irrigation during both the years of study. All these growth parameters were found to be at their lowest with control (T1), without nutrient application at all the stages of observation. Different combinations of organic and inorganic sources of nitrogen failed to exert a significant influence on days to 50 per cent flowering under both farming situations. Number of branches plant-1 did not differ significantly due to different combinations of organic and inorganic sources of nitrogen under rainfed situation. Whereas, under protective irrigation, supply of 100 per cent nitrogen through sheep penning (T9) recorded higher number of branches plant-1 , which was significantly superior to rest of the nutrient management practices tried. The highest level of yield attributes viz., number of filled pods palnt-1 , 100 pod weight, 100 kernel weight, shelling percentage and the lowest number of ill filled pods plant-1 were registered with the supply of 100 per cent of N through sheep penning (T9), which was at par with 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM (T3) and recommended dose of fertilizer (T2) under rainfed condition, which was however comparable with supply of 50 per cent nitrogen through urea + 50 per cent nitrogen through leaf compost (T5) under protective irrigation. Non-supply of nutrients in control (T1) resulted in the deflated stature of all the above said yield attributes. Supply of 100 per cent of nitrogen through sheep penning (T9) recorded significantly higher pod and haulm yield of groundnut, which was howe xxi Under rainfed condition, supply of 100 per cent of N through sheep penning (T9) recorded higher net returns in groundnut, which was however, comparable with application of recommended dose of fertilizer (T2) and 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM (T3), which were comparable among themselves. Under protective irrigation, the highest net returns were realized with supply of 100 per cent of N through sheep penning (T9), which was at par with recommended dose of fertilizer (T2) and the latter was intun comparable with application of 50 per cent N through urea and 50 per cent nitrogen through either FYM or leaf compost (T3 and T5) during the kharif, 2015. The lowest gross and net returns were registered with control (T1) during both the situations in kharif, 2014 and 2015. The highest benefit-cost ratio was registered with supply of 100 per cent N through sheep penning (T9), which was however comparable with recommended dose of fertilizer (T2) under both situations except during second year under protective irrigation, where it was significantly superior over rest of the nutrient management practices tried. Statistical disparity was not observed with respect to physical properties of soil viz., bulk density and aggregate stability during the two consecutive years of study both under rainfed and protective irrigated condition. However, numerically and comparatively lower and higher values of bulk density and aggregate stability were recorded with application of 100 per cent nitrogen through FYM (T4) and 100 per cent nitrogen through sheep penning (T9). Whereas, slightly higher and lower values of bulk density and aggregate stability were observed with control (T1) respectively. Supply of 100 per cent N through organic manures viz., FYM, sheep penning, leaf compost, sheep manure, enriched groundnut shells (T4, T9, T6, T8 and T10) recorded significantly higher water holding capacity and infiltration rate over substitution of 50 per cent N through urea with the above organic manures (T3, T5, T7 and T11) and recommended dose of fertilizers (T2) both under rainfed and protective irrigated condition. The deflated stature of above said parameters were recorded with control (T1). At all the stages of the crop growth, maximum values of moisture content in the soil was recorded with supply of 100 per cent nitrogen through FYM (T4), which was at par with application of 100 per cent nitrogen through sheep penning (T9), leaf compost (T6), sheep manure (T8) and enriched groundnut shells (T10) i.e., where 100 per cent N was supplied through organics. However, it was comparable with substitution of 50 per cent nitrogen through sheep manure (T7) during the second year of investigation under both the situations. Control (T1) recorded the minimum values of moisture content in the soil. Under rainfed and protective irrigated condition, application of either organics alone or in combination with inorganic sources of nitrogen has not shown any statistical disparity on pH and EC of the soil after harvesting of the groundnut. Post-harvest organic carbon content in the soil was comparable among the nutrient management practices except control (T1), which recorded the lowest organic carbon content. xxii During two consecutive years of study, supply of 100 per cent nitrogen through sheep penning (T9) recorded significantly higher number of colony forming units of bacteria, fungi and actinomycetes over rest of the nutrient management practices tried after harvesting of the groundnut, while it was recorded lowest with control plot (T1) both under rainfed and protective irrigated situations. During two consecutive years of experimentation, at all the stages of the crop growth the highest nitrogen uptake of groundnut was registered with supply of 100 per cent nitrogen through sheep penning (T9), which was in parity with recommended dose of fertilizers (T2) under rainfed condition, which was inturn comparable with 50 per cent nitrogen through urea + 50 per cent nitrogen either through leaf compost or FYM (T3 or T5) at all the stages of crop growth except at 30 DAS, where it was on par with recommended dose of fertilizers (T2) under protective irrigation. During two consecutive years of the study, at all the stages of crop growth, maximum phosphorus uptake of groundnut was recorded with supply of 100 per cent nitrogen through sheep penning (T9) under rainfed condition, which was significantly superior over rest of the treatments tried. Whereas under protective irrigation, it was comparable with application of either inorganic fertilizers (T2) or substitution of 50 per cent nitrogen through FYM or leaf compost (T3 or T5) at latter stages of crop growth i.e., at 90 DAS and at harvest. The highest potassium uptake in groundnut was recorded with supply of 100 per cent nitrogen through sheep penning (T9). Whereas, the lowest N, P and K was associated with control (T1). Significantly higher post-harvest soil available nitrogen status was recorded with supply of 100 per cent nitrogen through organic sources viz., FYM, sheep penning, leaf compost, sheep manure and enriched groundnut shells (T4, T9, T6, T8 and T10) over rest of the nutrient management practices tried during kharif, 2014 and 2015 both under rainfed and protective irrigated situations. The post-harvest soil available phosphorus recorded with supply of 100 per cent nitrogen through sheep penning, leaf compost, enriched groundnut shells and sheep manure (T9 T6 T10 and T8) was comparable among themselves and significantly superior over rest of the treatments. Supply of 100 per cent nitrogen through sheep penning (T9) recorded maximum post-harvest soil available potassium, which was in parity with application of 100 per cent nitrogen either through sheep manure (T8) or enriched groundnut shells (T10). Whereas, the minimum values of post-harvest soil available nitrogen, phosphorus and potassium were registered with control (T1). In conclusion, the present study has revealed that there is ample scope for enhancing the productivity and economic returns of groundnut as well as soil health in rainfed alfisols with supply of 100 per cent nitrogen through sheep penning or 50 per cent nitrogen through urea + 50 per cent nitrogen through FYM. However, sheep penning practice is proved as most promising, economically viable, environmentally safe and ecologically sustainable option for rainfed alfisols of Scarce Rainfall Zone of Andhra Pradesh | en_US |
dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810064152 | |
dc.keywords | SOIL HEALTH, GROUNDNUT, NUTRIENT MANAGEMENT, ALFISOLS | en_US |
dc.language.iso | en_US | en_US |
dc.pages | 235 | en_US |
dc.publisher | Acharya N.G. Ranga Agricultural University | en_US |
dc.research.problem | SOIL HEALTH AND PRODUCTIVITY OF GROUNDNUT AS INFLUENCED BY INTEGRATED NUTRIENTMANAGEMENT UNDER RAINFED ALFISOLS | en_US |
dc.sub | Agronomy | en_US |
dc.subject | null | en_US |
dc.theme | SOIL HEALTH AND PRODUCTIVITY OF GROUNDNUT AS INFLUENCED BY INTEGRATED NUTRIENTMANAGEMENT UNDER RAINFED ALFISOLS | en_US |
dc.these.type | Ph.D | en_US |
dc.title | SOIL HEALTH AND PRODUCTIVITY OF GROUNDNUT AS INFLUENCED BY INTEGRATED NUTRIENTMANAGEMENT UNDER RAINFED ALFISOLS | en_US |
dc.type | Thesis | en_US |
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