Browsing by Author "Muralidharan, A."
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Item Banana varieties for intercropping arecanut gardens(2007-02-08) Ramakrishnan Nayar, T.V.; Muralidharan, A.Item Biomass productivity of different intercropping systems with arecanut(2007-02-08) Muralidharan, A.; Krishna Murthy, K.The biomass productivity of 12 cropping systems comprising 19 intercrops grown under arecanut is reported vis-a-vis their sole cropping systems. The productivity of all intercrops was inferior when compared to their respective sole crops- This reduction varied from 18 per cent under beans to 88 per cent under fodder sorghum. Arrow root and banana suffered less than 50 per cent reduction in their productivity as intercrops, while ginger, chilli, colocasia, paddy, turmeric, yam and Dioscorea had productivity rates ranging only between one - third to one - half of their sole crops. The remaining crops suffered severely under intercropping. Intercropping had a positive effect on the productivity of arecanut except with hybrid napier and arrow root. The biomass productivity of all the intercropping systems was greater than that of the sole cropping system of arecanut.Item Effect of intercultivation on production of arecanut, Areca catechu L.(2007-02-08) Sadanandan, A.K.; George, C.K.; Muralidharan, A.; Abraham, K.J.Effect of intercultivation in areca garden (digging with mammutty once in a year, digging with mammutty twice a year, digging with mammutty once in two years and no digging) was studied for six years (1969-1975) in the alluvial soils of CPCRI Research Centre. Peechi on the productivity of arecanut. Pooled data for six years showed that intercultivation in areca garden did not significantly increase the production of fruit or fruit weight.Item Evaluation of banana varieties for intercropping in arecanut gardens(2007-02) Ramakrishnan Nayar, T.V.; Muralidharan, A.; Shama Bhat, K.Field experiments were conducted at the Central Plantation Crops Research Institute (CPCRI), Research Centre, Kannarar during the period 1975 to 1981 to identify banana varieties suitable for intercropping in arecanut gardens and to study the effects of intercropping with banana on the yield of arecanut palms. Among- the banana varieties tried. Robusta.Mysore Poovan, Red banana and Karpuravalhy were found suitable for intercropping in arecanut gardens. The variety Red banana gave maximum net returns under intercropping in arecanut gardens. There was no adverse effect on the yield of arecanut palms due to intercropping with banana.Item Evaluation of potassium requirement of oil palm by desorption isotherm(2007-02) Muralidharan, A.; Biddappa, C.C.The Desorption Equilibrium Model (DEM) was prepared to recommend the potssium requirement of oil palm with the aid of simple basic soil tests in the oil palm growing laterite soil of Palode, Thiruvanathapuram. Based on DEM ready reckoner to guide the level of K2O to be applied per palm to raise the available potassium to any desired level was proposed.Item Intercropping in Arecanut(2007-02) Muralidharan, A.Item Intercropping in Arecanut Gardens(2007-02) Muralidharan, A.; Ramakrishnan Nayar, T.V.Item Management(2007-02) Muralidharan, A.; Rethinam, P.; Antony, K.J.; Jayasankar, N.P.Item Management(2007-02) Muralidharan, A.; Rethinam, P.; Antony, K.J.; Jayasankar, N.P.Item Management of Coconut Root (Wilt) Disease(2007-02) Rethinam, P.; Antony, K.J.; Muralidharan, A.Coconut root (wilt) disease responds well to the management practices if the disease is in the early to middle stages. In the absence of a definite chemical control measure, a two-pronged approach was made namely to live with the disease in the heavily infested areas of southern Kerala and contain the disease in the mildly affected areas of northern Kerala and border districts of Tamil Nadu adjoining Kerala. Integrated management increased nut yield from 28 to 51 nuts/palm/year within three years in mildly affected area and 23.4 nuts/palm/ycar on an average in disease affected area. Irrigation coupled with fertilizer application, plant protection measures and mixed cropping increased the yield of disease affected coconut garden from 17.6 to 46.0 nuts/palm/year. In the mildly infected areas, the removal of disease affected palms irrespective of yield, continuous monitoring and removal helped to maintain almost disease free condition.Item Multiple Cropping(1982-12) Sannamarappa, M.; Muralidharan, A.Item Response Of Coconut Root (Wilt) Disease To Management Practices(1986) Muralidharan, A.; Gopalakrishnan Nair, M.; Jayasankar, N.P.Data collected during the third year of a set of field experiments designed to elucidate the effect of an integrated management approach to coconut root (wilt) disease have revealed a favourable response. The preservations lend support to the possibility of promoting the strategy to live with the disease in a heavily affected tract, combined with the cation of unproductive palms.Item Response of Coconut Root (Wilt) Disease to Management Practices(1986) Muralidharan, A.; Gopalakrishnan Nair, M.; Jayasankar, N.P.Data collected during the third year of a set of field experiments designed to elucidate the effect of an integrated management approach to coconut root (wilt) disease have revealed a favourable response. The preservations lend support to the possibility of promoting the strategy to live with the disease in a heavily affected tract, combined with the cation of unproductive palms.Item Response of Oil Palm Seedlings to Graded Levels of Nitrogen(1993) Muralidharan, A.; Biddappa, C.C.A pot culture experiment was conducted with six month old oil palm seedlings for a duration of 18 months, to study their growth characteristics and the total nutrient contents with respect to graded levels of nitrogen (specific levels being: 0,100, 200 and 400 ppm nitrogen per seedling per year). Increased levels of nitrogen significantly increased different growth parameters. The seedlings receiving no nitrogen (No level) were found to manifest foliar yellowing and stunted growth. The percentage distribution of biomass at N0 level showed that the root constituted about 45 per cent of the total biomass; while in the case of N100 N200and N400 levels, they were only 25.1,2.8 and 20.2 percent respectively. Distribution of total nitrogen content of the seedlings indicate that at all levels of nitrogen application, 53 to 60 per cent of its total content was locked up in leaf, 7 to 12 per cent in petiole, 12 to 16 per cent in stem, and 14 to 29 per cent in root. The total content of other nutrients increased significantly with increasing levels of nitrogen.