Browsing by Author "Sadanandan, A.K."

Now showing 1 - 18 of 18
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    Assessment of soil zinc and copper as reflected by the leaf composition of pepper (Piper nigrum L.)
    (2007-02-08) Rajagopal, C.K.; Sadanandan, A.K.
    The youngest matured and the next matured leaves of the lower one-third, the middle one-third and the upper one-third portions of 10 year old pepper vines growing in an alfisol were analysed for zinc and copper and the values related to the zinc-copper extractable by DTPA in the soil. Zinc and copper in the youngest matured leaf of the middle one-third portion of the vine was found to have the highest correlation with the soil available zinc (r= 0.892 * *) and copper (r = 0.766 ••) respectively, thus showing the possibility of using the youngest matured leaf as the indicator leaf of pepper for these nutrients.
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    Control of a new Calyx mite of arecanut in Kerala
    (2007-02-08) Sadanandan, A.K.; Antony, K.J.
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    Effect of agro-techniques on the root (wilt) disease of coconut
    (2007-02-08) Sadanandan, A.K.; Pillai, N.G.; Robert Cecil, S.
    The various agro-techniques including planting techniques, nutritional and irrigation requirements of young and adult palms, inter and mixed cropping in coconut garden, crop - livestock - fisheries integration techniques etc. under the geo-pedo environments of Central and South Kerala for containing the root (wilt) disease of coconut are discussed. The root (wilt) disease of coconut, noticed first in 1882 in Central Kerala, has now spread upto Trichur district in the north and Trivandrum district in the South. The disease has also been recently noticed in two villages of Kanyakumari district in Tamil Nadu. Palms of all ages are affected. The disease spreads at 1-4 km per year and has now affected about 12 million palms in 250,000 ha extending to nearly one third of the total coconut area of Kerala. The economic loss due to the disease is Rs. 300 million annually. The research on the disease was started as early as in 1937 and intensified in 1948. The etiology of the disease has not yet been clearly understood. And therefore no specific control measures could be advocated. However, the results of research carried out so far by the CPCRI at its Regional Station, Kayangulam and elsewhere showed that a package of agro-technology could be drawn out for mitigating and/or arresting the disease. These are enumerated in this article. The climate of the region is of humid tropical with an annual rainfall of 2284 mm received in 120 rainy days. The soil types are loamy sand/sandy loam and poor in N,K, Ca, Mg and micronutrients. The management practices adopted for the main crop of coconut and the subsidiary crops grown in the coconut gardens are given in Table I.
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    Effect of different intrials of irrigation at different depths of planting Arecanut
    (Central Plantation Crops Research Institute Regional Station Vittaal 574243., 1978) Leela, M.; Sadanandan, A.K.; George, C.K.; Abdul Khader, K.B.; Yadukumar, N.
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    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.
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    Effect of mixed cropping with cacao in coconut root (wilt) affected garden
    (1982) Kamalakshi Amma, P.G.; Sethumadhava Menon, K.; Patil, P.B.; Sadanandan, A.K.
    Mixed cropping of cacao increased the soil fertility. There was no further deterioration of re the disease condition of the in palms. Increase in yield of palms was 30%. Net income was maximum when double hedge system id of planting cacao was adopted.
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    Effect of mixed cropping with cacao in coconut root (wilt) affected garden
    (2007-02-08) Kamalakshi Amma, P.G.; Sethumadhava Menon, K.; Patil, P.B.; Sadanandan, A.K.
    Mixed cropping of cacao increased the soil fertility. There jy was no further deterioration of re the disease condition of the in palms. Increase in yield of palms ie was 30%. Net income was maxi-to mum when double hedge system id of planting cacao was adopted.
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    Effect of organic amendments on rhizome rot of ginger
    (2007-02-08) Sadanandan, A.K.; Rohini Iyer
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    Floral biology and breeding of clove (Eugenia caryophyllata Thunb)
    (2007-02) Nair, R.B.; Sadanandan, A.K.; Unnithan, K.R.G.
    In clove the flowers are bisexual. The male phase starts along with the opening of the flowers. The stamens shed after two days. The female phase starts soon after the male phase. In genera] inbreeding is common in clove. But controlled cross-breeding is also possible by adopting sophisticated techniques. The maximum receptivity of the stigma is found to be on the 5th day after opening of the flower. The best period for pollination is between the 4th and 6th day after opening. The highest fruit set obtained was 46.66 %. A fertilized flower takes about three months for maturity. A suitable hybridisation procedure for clove breeding is described.
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    Increasing Productivity of Cardamom through Large Scale Demonstration of Improved Technology in Farmers Fields in Kodagu District of Karnataka
    (2007-02) Korikanthimath, V.S.; Venugopal, M.N.; Naidu, R.; Sadanandan, A.K.
    A High Production Technology (HPT) programme was initiated in 1986 In all the key cardamom growing zones of Kodagu district Kantataka to motivate the grower to increase the per unit production to a level of 650 kg per ha by utilizing the information available at the Cardamom Research Centre, Appangala,collaboration with Spices Board. A series of meetings were held in various field units to enlighten planters for adoption of the HPT programe. Totally 42 farmer, were selected covering area of 94.10 ha by planting 4,70,500 C1-37 seedlings. The preplanting status survey of the HPT cardamom plantations revealed that the yield level ranged from as low as 10 to as high as 125 kg/ha, with the average being 58.0 kg/ha. The establishment of cardamom in all the plots is quite satisfactory (95%). The slots were monitored from time to time by implementing the package of practices as per calender of operations.
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    Management of Wilt Affected Black Pepper (Piper Nigrum L.)Gardens
    (2007-02) Sadanandan, A.K.
    The agro-technology for the management of witt affected pepper gardens was studied for four years. Phytosanitation, rejuvenation of the garden by replacing the wilt-affected vines with high yielding types, replanting after the removal of all pepper vines in the garden, use of amendments, soil nutrient-moisture manipulation, cultural practices and use of pesticides were followed. Economics of management was worked out. Results show that management of the wilt affected pepper gardens is economically feasible.
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    Pepper Cultivation in Andaman and Nicobar Islands
    (1973) Sadanandan, A.K.; Nair, R.B.
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    Short Scientific Notes : A Note on Horns in Coconut Fruits
    (1976) Nair, R.B.; Sadanandan, A.K.
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    Variation in Glucose Content in Andamans Coconut
    (1983) Nair, R.B.; Sadanandan, A.K.
    Tall and Dwarf palms did not show any significant differences between them in the glucose content of 6-month old tender nut water. The total variation ranged from 2.0% to 6.9%. No correlation was observed between glucose content and different colour groups (types) in Tall palms. Glucose content became generally higher as the nut size reduced from giant to medium, small and micro.
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    Water requirement of arecanut
    (1973-05) Sadanandan, A.K.
    The water requirement of arecanut (Areca catechu L.) was determined at the Regional Arecanut Research Station, Peechi, in 1968-69. Irrigation once in 3 days at 189.23 litres of water/palm, giving a duty of 1,309 ha/cumec, gave the maximum profit. Planting seedlings at a depth of 90 cm gave significantly more yield than plantings at depths of 60 and 30 cm. The water requirement of arecanut was 82.49 cm. For basin type of irrigation once In 3 days, the minimum moisture was 24-84% and maximum tension at die root zone was 0-139 atm.
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    Water requirement of arecanut
    (1973) Sadanandan, A.K.
    The water requirement of arecanut (Areca catechu L.) was determined at the Regional Arecanut Research Station, Peechi, in 1968-69. Irrigation once in 3 days at 189.23 litres of water/palm, giving a duty of 1,309 ha/cumec, gave the maximum profit. Planting seedlings at a depth of 90 cm gave significantly more yield than plantings at depths of 60 and 30 cm. The water requirement of arecanut was 82.49 cm. For basin type of irrigation once in 3 days, the minimum moisture was 24.84% and maximum tension at the root zone was 0.139 atm.