Browsing by Author "Rama Varma"

Now showing 1 - 5 of 5
  • Thumbnail Image
    Item
    Beneficial effects of crop combination of coconut and cacao
    (1975-04) Nair, P.K.R.; Rama Varma; Nelliat, E.V.; Bavappa, K.V.A.
    A field experiment on mixed cropping of coconut and cacao was initiated in 1970-71 in an existing 16-year-old coconut plantation of high-yielding genotypes. Cacao was planted in 2 systems - single hedge (single row of cacao between rows of coconut) and double hedge (2 rows of cacao between rows of coconut). There was also a control plot of pure stand of In 1973 the yield of cacao (number of pods/plant) was identical under both methods of planting but in 1974 it was significantly more in the single hedge. The average increase in the yield of coconut under control, single hedge and double hedge worked out to 64.3, 68 I and 115.9%, respectively, over the pre-experimental yield of the corresponding groups. The increase in the control plot was due to better management practices. The additional increase in yield of coconut under mixed cropping with cacao could be due to the synergistic effect of crop combination.
  • Thumbnail Image
    Item
    Beneficial effects of crop combination of coconut and cacao
    (2007-02-08) Nair, P.K.R.; Rama Varma; Nelliat, E.V.; Bavappa, K.V.A.
    A field experiment on mixed cropping of coconut and cacao was initiated in 1970-71 in an existing 16-year-old coconut plantation of high-yielding genotypes. Cacao was planted in 2 systems - single hedge (single row of cacao between rows of coconut) and double hedge (2 rows of cacao between rows of coconut). There was also a control plot of pure stand of In 1973 the yield of cacao (number of pods/plant) was identical under both methods of planting but in 1974 it was significantly more in the single hedge. The average increase in the yield of coconut under control, single hedge and double hedge worked out to 64.3, 68 I and 115.9%, respectively, over the pre-experimental yield of the corresponding groups. The increase in the control plot was due to better management practices. The additional increase in yield of coconut under mixed cropping with cacao could be due to the synergistic effect of crop combination.
  • Thumbnail Image
    Item
    Intercropping For Enhanced Profits From Coconut Plantation
    (1974-07) Nair, P.K.R.; Rama Varma; Nelliat, E.V.
  • Thumbnail Image
    Item
    Intercropping for Enhanced Profits from Coconut Plantation
    (2007-02) Nair, P.K.R.; Rama Varma; Nelliat, E.V.
  • Thumbnail Image
    Item
    Intercropping with Tuber Crops in Coconut Garden
    (2007-02) Thomas Varghese, P.; Gopalasundaram, P.; Nelliat, E.V.; Rama Varma; Nair, P.K.R.
    Intercropping in coconut stands with tubers revealed that raising tuber crops has no adverse effect on the main crop of coconut, provided, the same intercrop was not grown on the same plot every year and that both the inter crop and the main crop were manured adequately and separately. A five per cent increased yield of coconut over pre-experimental yield was obtained when tapioca, elephant yam, sweet potato, ginger and turmeric were grown in rotation as intercrops and 15% increase When greater yam, lesser yam, colocasia, and Chinese potato were rotated. Tapioca, cultivar M-4 yielded 4.5 t/ha when grown continuously in the same plot as against 6.3 t/ha when it was alternated with elephant yam. Similarly, yield of elephant yam increased from 6.4 t/ha (continuous crop) to 11.8 t/ha (in rotation with tapioca). Further improvement in the yield of these crops was noticed in five year rotations. Among the intercrops, elephant yam and ginger were the most profitable. Besides giving higher net returns per unit area, intercrops generated additional employment to the tune of about 130 man days/ha/year.