Browsing by Author "Bopaiah, M.G."
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Item Agriculture research and development - experiences(2007-02-08) Bopaiah, M.G.Item Agriculture research and development - experiences in Lakshadweep Islands(2001) Bopaiah, M.G.Item An easy way to prepare Amla murabba with high Vitamin C content(1986) Gupta, G.K.; Bopaiah, M.G.Item Effect of heavy metals on the distribution of P, K, Ca, Mg and micronutrients in the cellular constituents of coconut leaf(1989-06) Biddappa, C.C.; Bopaiah, M.G.The distribution patterns of P, K, Ca, Mg and micronutrients with special reference to heavy metal treatments have been evaluated in coconut and the results indicated that the P distribution in organic acids, polar compounds, proteins and nucleic acids and polysaccharides has been, influenced by the heavy metals. However, the K content of lipids and pigments, organic acids, cellulose and insoluble residues has been significantly altered due to heavy metal treatment. The Ca concentration in lipids and pigments and organic acids has been significantly depressed by heavy metals. A similar pattern of depression of Mg content has been recorded in nucleic acid, polysaccharides and organic acid fractions. Among micronutrients, iron content in proteins, cellulose and insoluble fractions increased by heavy metals in general and due to Pb and Cd significantly in pigments. All the seven heavy metals increased the Mn content in polar compounds over control. Cadmium, Bismuth, Chromium and Barium exerted profound increase in Zinc distribution in polysaccharides and insoluble residues over control. There was no change in Zinc concentration with lipids, pigments and organic acids. In respect of Copper there was noticeable change due to heavy metals in pigments, cellulose, polysaccharides and insoluble residues. Copper content increased insoluble residues and pigments.Item Effect of heavy metals on the distribution of P, K, Ca, Mg and micronutrients in the cellular constituents of coconut leaf(2007-02-08) Biddappa, C.C.; Bopaiah, M.G.The distribution patterns of P, K, Ca, Mg and micronutrients with special reference to heavy metal treatments have been evaluated in coconut and the results indicated that the P distribution in organic acids, polar compounds, proteins and nucleic acids and polysaccharides has been, influenced by the heavy metals. However, the K content of lipids and pigments, organic acids, cellulose and insoluble residues has been significantly altered due to heavy metal treatment. The Ca concentration in lipids and pigments and organic acids has been significantly depressed by heavy metals. A similar pattern of depression of Mg content has been recorded in nucleic acid, polysaccharides and organic acid fractions. Among micronutrients, iron content in proteins, cellulose and insoluble fractions increased by heavy metals in general and due to Pb and Cd significantly in pigments. All the seven heavy metals increased the Mn content in polar compounds over control. Cadmium, Bismuth, Chromium and Barium exerted profound increase in Zinc distribution in polysaccharides and insoluble residues over control. There was no change in Zinc concentration with lipids, pigments and organic acids. In respect of Copper there was noticeable change due to heavy metals in pigments, cellulose, polysaccharides and insoluble residues. Copper content increased insoluble residues and pigments.Item 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.Item Effect of NPK fertilisers on coconut grown on coral soils of Lakshadweep(1993) Bopaiah, M.G.; Cecil, S.R.Item Effect of slow release nitrogen and phosphorus fertilizer sources in coconut growing coastal sandy soil(2007-02-08) Bopaiah, M.G.; Nambiar, C.K.B.; Biddappa, C.C.Item 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.Item 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.Item Is Common Salt an Alternative to Potassium Nutrition in Coconut?(1996-03) Bopaiah, M.G.; Biddappa, C.C.; Rajagopal, V.Item Moisture Movement Studies in Drip Irrigation(2007-02) Dhanapal, R.; Yusuf, M.; Bopaiah, M.G.The study of moisture movement as a function of elapsed time was undertaken to determine the boundaries of the irrigated soil volume from a single point source of dripper with three quantities of irrigation water (Ql * 33%, Q2 « 66% and Q3 « 100% of daily E O) and four discharge rates (D^l, D2*s3rr D3*3 and D^ 4 lit/hr,) In laterite soil at CPCRI, Kasaragod* The horizontal and vertical soil moisture distribution was monitered by gravimetric method and also by excavating trenches after specified time.Item Moisture Movement Studies Under Drip Irrigation(2007-02) Dhanapal, R.; Yusuf, M.; Bopaiah, M.G.Field studies were conducted to determine wetting fronts and volume of active root zone in coconut basin (manuring -circular area around the bole) wetted with three quantities of water application, Ii-33% of Eo, h-66% of E0 and 13-100% of E0) at a fixed emitter (dripper) discharge rate of 2 litrcs/hr. The efficiency of placing emitters on surface and sub-surface, on water movement and volume of basin wetted was also studied with irrigation equal to 100% of Eu. Vertical and horizontal movement of water and volume of active root-zone in coconut basin wetted were directly related to the quantity of water applied. The vertical and horizontal wetting fronts were 90 and 51 cm at Ii, 100 and 60 cm at I2 after 30 days of regular irrigation, and 120 and 65 cm at I3 after 5 days irrigation. The percentage volume of active root zone wetted was 19.1, 21.5 and 28.6 at Ii, I2 and I3 rates of water application during the periods. The vertical and horizontal fronts under surface and sub-surface placed emitters were 64 and 44 cm and 90 and 52 cm, respectively after a weeks irrigation. The percentage volume of active root zone wetted was 13.6 and 18.2 respectively under surface and sub-surface placed emitters. The sub-surface placement wetted 35% more volume than the surface placed emitter.Item Nutrition of Hybrid Coconut(2007-02) Biddappa, C.C.; Bopaiah, M.G.; Khan, H.H.Comparatively, removal of NPK and other nutrient elements by hybrid varieties appears to be lesser than that of the tall varieties of coconut as revealed by the analysis of components. This is supported by the results of 15 year old manurial trial with WCT and three hybrids at CPCRI, Kasaragod. These results have shown that theoretically (M-B model) just to realize 50 per cent of maximum yields COD x WCT and WCT x COD require only 75:75:150 and 144:144:288 g N, P2O5 and K20 respectively and to obtain 87.5 per cent of the maximum yield, the fertilizer application can be tailored to two third quantity. Nutrient relationship to yield of coconut has shown good indications. Nitrogen content of all the leaf ranks (except 6) significantly related to yield in which leaf No.l was showing highest correlation. The K values of all the leaves (except No.l) are significantly related to yield. The study on chemical potential in the palm and their relationship to the yield has indicated positive correlation of leaf K and Mg with coconut yield. The D x T among the available hybrids was registered to be efficient user of nutrients in the cellular fractions of the constituents.Item Studies On The Nitrogen Release Pattern By Ureaform And Coated Fertilizers In Acid Soils(1987) Bopaiah, M.G.; Biddappa, C.C.The results of investigation conducted on the coastal sand, red sandy loam and laterite soils with four slow release nitrogen sources for their nitrogen release pattern in the laboratory have been reported. Ureaform recorded low exchangeable ammonium and urease activity than all other slow release sources used. The ureaform released ammonical, nitrate and urea nitrogen for more than 105 days irrespective of the soils. In laterite, urea and neem cake coated urea registered significantly high nitrate nitrogen. In all the soils, nitrite nitrogen was recorded upto 45 days only. Neem cake blended urea and urea blended with neem cake and coal tar showed higher nitrate nitrogen.