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1992 - 19972
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Author: KAU × Author: Latha, A × End date: 1997 × Start date: 1992 ×
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    ThesisItemOpen Access
    Growth and yield of cashew in relation to foliar and soil nutrient levels
    (Department of Agronomy, College of Horticulture, Vellanikkara, 1992) Latha, A; KAU; John, P S
    An experiment on the growth and yield of cashew in relation to foliar and soil nutrient levels was conducted during 1990-'92 by making use of seedling progenies of BLA-39-4 with three levels each of N (250, 500 and 1000 g /tree /year), P (125, 250 and 500 g P205 /tree /year) and K (250, 500 and 1000 g K2O /tree /year) and one absolute control (with out NPK application ). Significant response in increasing height and number of flushes was observed only for N (500 g /tree /year) and P (250 g P205 /tree / year). Leaf N and K content at flushing , flowering and fruiting were enhanced by application on of a ll the three nutrients with maximum values at flowering . Leaf P content was enhanced by N, P and K application only at flushing and fruiting . N, P and K application also increased the chlorophyll ‘ b 1 and total chlorophyll. There was increase In N and P content of soil by N, P and K application , while K content of s oil was increased only with higher levels of K. 2 The number of panicles/m and test weight of nuts and yield were increased by the application of N, P and K. A positive significant relationship was obtained between leaf N and P contents at flowering and fruiting stages and yield . There was progressive increase in nut volume , protein content of kernels and fruit characters such as fruit weight, fruit volume and TSS of apple by N, P and K application .
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    ThesisItemOpen Access
    Consequences of conversion of marginal homesteads for planting rubber in Kottayam district
    (Department of Agricultural Extension, College of Horticulture, Vellanikkara, 1997) Latha, A; KAU; Ranjan S, Karippai
    A study was conducted in Kottayam district to find out the causes and consequences with respect to the nature, extent and conversion (composite index developed from nature and extent) of marginal homesteads for planting rubber. The respondents included 200 convertors and 100 non-convertors. The study revealed that outmigration of hired labour, availability of hired labour, farming experience and perception about attributes of rubber cultivation could explain the maximum discrimination between convertors and non-convertors. Among the eighteen independent variables selected, availability of family labour and number of crops emerged as the most important factors influencing conversion. Gross cropped area and number of crops could explain the maximum variability of conversion. Net area under rubber was the factor which exerted maximum influence on other variables effecting conversion. The most important consequences of conversion expressed by convertors were outmigration of hired labour, outmigration of family labour, soil loss (erosion) based on magnitude and decrease in water availability, increase in social status and decrease in water table based on directionality. Community based land use strategy which involved production and sharing of farm produce among groups of individual homesteads based on similarity of topography, soil type, water resource dependence, local needs may become inevitable to sustain and maintain the diverse requirements of local communities in place of conversion of homesteads to monocrops like rubber alone. Rubber could only become a part of such land use systems.