Nutrient dynamics under different Land use systems in Kullu valley of Himachal Pradesh

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dc.contributor.advisorTHAKUR, C.L.
dc.contributor.authorTOPPO, SUNITA
dc.date.accessioned2017-01-04T12:43:02Z
dc.date.available2017-01-04T12:43:02Z
dc.date.issued2012
dc.description.abstractABSTRACT The present investigations entitled “Nutrient dynamics under different Land use systems in Kullu valley of Himachal Pradesh” were carried out at Baragran village (31.850 North latitude and 77.080 East longitude with an elevation of 1600 masl), district Kullu (Himachal Pradesh) during 2011-2012. The experiment was laid out in Randomized Block Design using six land use systems (T), with four replications. The six land use systems selected were: agriculture (T1), horticulture (T2), agri-horticulture (T3), traditional agroforestry (T4), pasture (T5) and silvipasture (T6). The plot size of each land use system was 800m2. Existing biomass production, nutrient dynamics and economic appraisal of each land use were evaluated. The results have revealed that different land use systems have different production levels of above ground and below ground biomass as well as on total biomass. Maximum above ground biomass (86.84 t ha-1), below ground biomass (30.76 t ha-1) and total biomass (117.60 t ha-1) was accumulated in the silvi-pasture land use system. In respect of total biomass production, silvi-pasture land use was followed by agri-horticulture, horticulture, pasture, traditional agroforestry and agriculture land use systems, respectively in the descending order. The surface (0-20 cm) soil layer contained higher amounts of OC, N, P and K, whereas, bulk density was more in sub-surface (20-40 cm) layer. Nutrient balance has shown higher net loss of N, P and K in agri-horticulture (T3). Whereas, minimum net loss of N and K in silvi-pasture (T6) and for P it was in pasture (T5).The maximum gross returns and total cost was in agri-horticulture, whereas, net returns were maximum in horticulture. The benefit-cost ratio was higher in silvi-pasture land use system. On the basis of the above findings, we can conclude that in the valley ecosystem fruit based land use systems and pure orchard are not only biological productive but have more net returns than other land use systems hence need to be promoted. Whereas, silvi-pasture system have maximum benefit-cost ratio, which need to be conserved for better environmental security. Agri-horticulture system shows the highest efficient nutrient cycling in comparison to other land use system and not only improved physico-chemical and biological properties of soil but also increase the productivity on sustainable basis. The synchronization of nutrient release pattern with crop demands is most important to achieve higher productivity from agri-horticulture system. Based on a comparison among different land use systems, agri-horticulture system needs to be promoted over the horticulture based land use systems for realizing both monetary returns and food security.en_US
dc.identifier.other47861
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/94404
dc.language.isoenen_US
dc.subAgroforestryen_US
dc.these.typeM.Sc
dc.titleNutrient dynamics under different Land use systems in Kullu valley of Himachal Pradeshen_US
dc.typeThesisen_US
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