Browsing by Author "Kailasam, C."

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    Coconut and arecanut based high density multispecies cropping systems
    (2007-02-08) Bavappa, K.V.A.; Kailasam, C.; Khader, K.B.A.; Biddappa, C.C.; Khan, H.H.; Kasthuri Bai, K.V.; Ramadasan, A.; Sundararaju, P.; Bopaiah, B.M.; George V. Thomas; Misra, L.P.; Balasimha, D.; Bhat, N.T.; Shama Bhat, K.
    High density multispecies cropping models were laid out one each in coconut and arecanut plantations during 1983. Data on various aspects of the system behaviour showed that the yield of coconut and arecanut increased to the extent of 176% and 12S% respectively in the two systems. The possibility of getting additional yields due to cropping system approach was, evident. There was no marked yield difference of the crops in the full, two-third and one-third levels of fertilizers applied though depletion in N and Mg balance was indicated. The air space utilisation was 31% in coconut while it was 63% in the arecanut system. The biomass production of the two systems showed that there was substantial increase in coconut biomass while the biomass of other crops remained more or less the same. In general, there was build-up of P and K nutrients in the systems. Under the arecanut system N also showed increased balance. There was improved microbial activity in the systems. No serious pest and disease management problems were indicated due to the high density cropping system approach. A number of crop varieties and hybrids tolerant/resistant to the nematode pathogen could be identified. The interaction of various, factors for exploiting higher levels of productivity through a system approach and the need for predicting crop choices based on data and crop performance are discussed in the paper.
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    Coconut and arecanut based high density multispecies cropping systems
    (1986-12) Bavappa, K.V.A.; Kailasam, C.; Khader, K.B.A.; Biddappa, C.C.; Khan, N.H.; Kasthuri Bai, K.V.; Ramadasan, A.; Sundararaju, P.; Bopaiah, B.M.; George V. Thomas; Misra, L.P.; Balasimha, D.; Bhat, N.T.; Shama Bhat, K.
    High density multispecies cropping models were laid out one each in coconut and arecanut plantations during 1983. Data on various aspects of the system behaviour showed that the yield of coconut and arecanut increased to the extent of 176% and 125% respectively in the two systems. The possibility of getting additional yields due to cropping system approach was evident. There was no marked yield difference of the crops in the full, two-third and one-third levels of fertilizers applied though depletion in N and Mg balance was indicated. The air space utilisation was 31% in coconut while it was 63% in the arecanut system. The biomass production of the two systems showed that there was substantial increase in coconut biomass while the biomass of other crops remained more or less the same. In general, there was build-up of P and K nutrients in the systems. Under the arecanut system N also showed increased .balance. There was improved microbial activity in the systems. No serious pest and disease management problems were indicated due to the high density cropping system approach. A number of crop varieties and hybrids tolerant/resistant to the nematode pathogen could be identified. The interaction of various factors for exploiting higher levels of productivity through a system approach and the need for predicting crop choices based on data and crop performance are discussed in the paper.
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    Effect of long term coconut-grass system on certain nutrients in the soil
    (2007-02-08) Biddappa, C.C.; Bopaiah, M.G.; Kailasam, C.; Shanavas, M.; George, K.M.
    Nutrient profile, balance and input-output of nutrients over three block periods in an existing coconut fodder system under high rainfall condition of Kasaragod have been computed. Coconut-grass system enriched over control plot in organic carbon, nitrogen, manganese and copper in the surface soil while the nutrients in lower profile was low. While these elements were of net gain in the system over control, potassium, calqum, phosphorus and magnesium were on net loss. Over a period of fourteen years, guinea grass legume mixture gained NPK over other grass treatments. The input-output balance for the control plot (without grass) was negative for all the nutrients studied except phosphorus and potassium.
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    Growth and drymatter production in the component crops under monocropping and high density multispecies cropping systems
    (2007-02) Kasturi Bai, K.V.; Voleti, S.R.; Ramadasan, A.; Kailasam, C.
    Growth and dry matter production of the crops grown under monocropping and coconut bated high density multispecies cropping systems (HDMSCS) have been compared. Canopy growth aid economic yield of intercrops under HDMSCS were considerably affected. The energy output/input based on NPK as active ingredients also was lower for the intercrops under HDMSCS system. Lower light intensity reaching the canopy of intercrops due to interception by coconut canopy appears to be the limiting factor for their growth and productivity. Shade loving species which require low light intensities are likely to perform better under HDMSCS system. Identification of such species of economic Importance for trying in HDMSCS system is desirable.
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    Influence Of High Density Multispecies Cropping On The P And K Forms In The Soil
    (1989-06) Nambiar, C.K.B.; Biddappa, C.C.; Bopaiah, M.G.; Kailasam, C.
    An account of gain or loss of different fractions of P and K in the soil under the coconut based high density multispecies cropping system over a period of three years has been worked out in a light textured soil at C. P. C. R. I. Kasaragod. In general, all the P fractions increased due to the high density in three year period. Building up of Fe-P in the soil was not marked as compared to Al-P and Ca-P. The Al-P content in the soil of coconut basin of multispecies as well as monocrop is very high at 0-25 cm and 25-50 cms. Wide variation in this fraction in the interspaces of high density and mono-cropping was noticed. There was a general increase in all the fractions of K over a period of three years cropped with different species. However, soil sampled from breadfruit, nutmeg, coffee, pineapple and subabul showed negative gain. Fixed K showed an accumulation in the basins of the crop species over three years. Water soluble K was more in monocrop basin as compared to the multispecies at 0-25 and 25-50 cms depth. Soil from interspace showed reverse trend.
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    Influence of High Density Multispecies Cropping on the P and K Forms in the Soil
    (2007-02) Nambiar, C.K.B.; Biddappa, C.C.; Bopaiah, M.G.; Kailasam, C.
    An account of gain or loss of different fractions of P and K in the soil under the coconut based high density multispecies cropping system over a period of three years has been worked out in a light textured soil at C. P. C. R. I. Kasaragod. In general, all the P fractions increased due to the high density in three year period. Building up of Fe-P in the soil was not marked as compared to Al-P and Ca-P. The Al-P content in the soil of coconut basin of multispecies as well as monocrop is very high at 0-25 cm and 25-50 cms. Wide variation in this fraction in the interspaces of high density and mono-cropping was noticed. There was a general increase in all the fractions of K over a period of three years cropped with different species. However, soil sampled from bread-fruit, nutmeg, coffee, pineapple and subabul showed negative gain. Fixed K showed an accumulation in the basins of the crop species over three years. Water soluble K was more in monocrop basin as compared to the multispecies at 0-25 and 25-50 cms depth. Soil from interspace showed reverse trend.