Anil KumarParewa, Hem Raj2019-06-072019-06-072004-08http://krishikosh.egranth.ac.in/handle/1/5810107625The study has been under taken in Dehradun district of Uttaranchal with the objectives (i) to study the dynamic of area, production and productivity of crops, (ii) to work out the economics of different crop rotations and (iii) to identify the constraints faced by the farmers, which impact the profitability of crop rotations. The compound growth rates were estimated to study crop dynamics using exponential equations. The economics of different crop rotations were worked out by taking into account the different cost concepts whereas the constraints were examined through Garrett’s ranking technique. The primary data were collected on pre-structured survey schedules with the help of personal interview of randomly selected 40 farmers for the year 2002-03. The results on crop dynamics revealed negative growth trends in total area as well as total production of cereals, pulses, oilseeds and vegetables. The major crop rotations were: paddy-potato-cauliflower, paddy-potato-pea, paddy-potato-sugarcane in plain region; paddy-potato-pea, paddy-wheat-tomato, paddy-potato-pea-paddy-wheat-tomato in valleys; mandua-potato-pea, urd-cabbage-maize, mandua-potato-pea-mandua-potato in mid hills and potato-wheat, mandua-pea, mandua-pea-potato-wheat in high hill region of the sturdy area. All the crop rotations were found paying remunerative returns to the farmers. In the plain region, paddy-potato-cauliflower rotation turned out to be the most remunerative crop rotation yielding net returns of Rs. 109354 per hectare over cost C3 while in valley region, paddy-wheat-tomato was the most profitable rotation giving net returns of Rs. 49645 per hectare over cost C3. Urd-cabbage-maize was found to be most profitable rotation in mid- hills yielding net returns of Rs. 92206 per hectare over cost C3 and potato-wheat rotation turned out to be most remunerative in high hill region yielding net returns of Rs. 22367 per hectare over cost C3. The main constraints faced by the farmers were technology transfer, internal capital rationing, marketing, storage, irrigation facilities, transport, fragmented land and high cost of inputs. Strengthening input supply system, development of infrastructural facilities, proper technology dissemination, integrated with proper extension services are the important policy implications emerged from the study for making farming enterprise more remunerative in the area.ennullThesis