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Item Economics analysis of rice - fish sequential farming system In the low lying paddy fields of Kuttanad, Kerala(Department of Agricultural Economics, College of Horticulture, Vellanikkara, 2001) Shanat Mathew, K; Joseph, K JThe present study on "Economic analysis of rice-fish sequential farming system in the low lying paddy fields of Kuttanad, Kerala" was aimed to analyse comparative economics of rice monocropping and rice-fish sequential farming systems, to quantity the employment generation capacity of the integrated system and to identify the constraints in the wide spread adoption of rice-fish sequential farming system. The study was undertaken during May - July 2000 and the data pertains to the year 1999. Data for the study was generated through sample survey of farmers by personal interview method using a pretested structured interview schedule. The study was conducted with a sample of 100 farmers for each system of cultivation. Two stage random sampling was adopted for the study. Tabular analysis was used to analyse the data. The cost of cultivation (cost C3) of rice under monocropping (Rs.23419.47 per hectare) and of rice under sequential farming system (Rs.1972S.31 per hectare) Was estimated. For fish, the cost of cultivation per hectare was Rs.6768.39. The major expenditure on input for rice cultivation under both systems and for fish was human labour. In rice monocropping, land preparation was observed to be the most expensive operation, whereas, in sequential farming weeding was the most expensive operation. In the case of fish cultivation, harvesting of fish turned out to be the most cost consuming operation. Gross income per hectare realized from the main as well as by product at the aggregate level was Rs.2S252.50, Rs.28371.00, and Rs.8782.95 for rice (monocropping), rice (sequential farming) and fish respectively. Cost of production per quintal of rice (monocropping) was Rs.64S.16 and for rice (sequential farming) was Rs.482.0S. For fish, cost of production per quintal of fish estimated to be Rs.1538.62. Benefi t cost ratio at cost C3 was found to be highest (1.44) in the rice cultivation under sequential farming. The corresponding figures for rice monocropping and fish were 1.08 and 1.30 respectively. This new system could provide on additional employment of 14.31 mandays per hectare. Even though this new integrated systems was profitable, lack of finance and non co-operation among farmers to an extend hinder the adoption of this practice. The major constraints experienced by the farmers in the cultivation were also identified.Item Performance of greengram (vigna radiata( L.) wilczek) cultivars under different tillage methods(Department of Agronomy College of Horticulture, Vellanikkara, 2018) Abid, V; Bindhu, J SAn experiment entitled “Performance of greengram (Vigna radiata (L.) Wilczek) cultivars under different tillage methods” was undertaken to study the response of selected greengram cultivars under different tillage methods and to identify the most economical combination of cultivar and tillage. The experiment was conducted during the period from December 2017 to March 2018 at Agronomy Farm, College of Horticulture, Vellanikkara. Split plot design was adopted with three replications. The main plot treatments were four tillage methods viz., M1 - minimum tillage (primary tillage only), M2 - minimum tillage followed by pre-emergence application of pendimethalin @ 1 kg ha-1, M3 - minimum tillage followed by post-emergence application of imazethapyr + imazamox @ 80 g ha-1 at 20 DAS and M4 - conventional tillage (Primary and secondary tillage) followed by two hand weedings at 15 and 30 DAS. Sub plot treatments were four cultivars; V1 –CO 6, V2 –CO 7, V3 –CO 8 and V4 -VBN (Gg)2. The growth attributes of greengram (plant height, number of branches and leaf area) at flowering and at harvest stages were influenced by tillage methods. Higher values were observed in minimum tillage followed by application of herbicide imazethapyr + imazamox @ 80 g ha-1 at 20 DAS and the lowest in minimum tillage. Among the cultivars, CO 8 and VBN (Gg)2 had recorded higher growth parameters. The physiological parameters, CGR, LAI, LAD and number of nodules per plant also varied with tillage methods and cultivars. The results revealed that yield parameters as well as yield were influenced by tillage methods and cultivars. Minimum tillage followed by application of imazethapyr + imazamox @ 80 g ha-1 at 20 DAS resulted in higher number of pods and number of seeds per pod and was at par with conventional tillage method. Among the cultivars, higher values of yield components were recorded in CO 8 followed by VBN (Gg)2. Minimum tillage followed by application of imazethapyr + imazamox @ 80 g ha-1 at 20 DAS recorded higher seed yield (748 kg ha-1) which was at par with conventional tillage. This was 102 per cent higher than yield from minimum tillage. The cultivar CO 8 recorded the highest seed yield (736 kg ha-1) and differed significantly from other three cultivars. All cultivars performed better under minimum tillage followed by application of imazethapyr + imazamox @ 80 g ha-1 at 20 DAS and conventional tillage followed by two hand weedings at 15 and 30 DAS. Among the interactions, the cultivar CO 8 in minimum tillage followed by imazethapyr + imazamox @ 80 g ha-1 recorded higher seed yield (942 kg ha-1) and it was at par with conventional tillage. The results revealed that weed density and dry weight varied with tillage methods but not with cultivars. The weed density was lower in conventional tillage method which was at par with minimum tillage followed by herbicide sprays. The soil nutrient status was not influenced by the cultivars. Among the tillage methods, minimum tillage method recorded higher values of available nitrogen, phosphorus and potassium after the experiment. The nutrient uptake was higher in minimum tillage followed by post emergence application of imazethapyr + imazamox @ 80 g ha-1 at 20 DAS. Economic analysis revealed that cultivar CO 8 grown under minimum tillage followed by imazethapyr + imazamox @ 80 g ha-1 at 20 DAS (M3V3) recorded the highest gross returns and benefit - cost ratio. Greengram cultivar CO 8 (V3) grown under minimum tillage method followed by post emergence herbicide spray of imazethapyr + imazamox @ 80 g ha-1 at 20 DAS (M3) can be recommended for summer rice fallows considering the yield and profitability.Item Investigations on tho causes of poor productivity of rice soils of Pazhamchira ela in Chirayinkil Taluk(Department of Soil Science and Agricultural Chemistry, College of Agriculture, Vellayani, 1986) Girija, V; Abdul HameedAn Investigation into the causes of tho poor productivity of tho rice fields in tho Pazhamchira "ela” at Mel- kadakkavur of Chirayinkll Taluk was taken up to suggest ways and moans to Increase rlco and straw production and to bring to light tho physico-chemical characteristics of tho soil. Fifty surface soil samples and two profiles wore examined, analysed and investigated. Field trials in Randomised Block Design spread over the Kharif and Rabi seasons of 1934-85 with rice varieties Ptb-9 and Vyttila-1 respectively were conducted in a cultivator's field. The surface soil studies revealed that the soils were highly acidic with appreciable electrical conductivity. The soils were of low CEC, with an average base saturation of 49*7 with more than 59 percent of the exchange sites occupied by exchangeable A1 and iron. The N and K content of the soils were low to medium and P content was low.