Publications by CPCRI Staff
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Browsing Publications by CPCRI Staff by Author "Abdul Haris, A."
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Item Agro techniques for augmentation of carbon storage through crop residue recycling in coconut-based cropping system(2023-03) Jeena Mathew; Abdul Haris, A.; Anithakumari, P.Item Balanced fertiliser application - A critical analysis for ensuring better productivity in coconut(2020-11) Jeena Mathew; Abdul Haris, A.Item Coconut-growing soils of Kerala: 2. Assessment of fertility and soil related constraints to coconut production(2018) Nair, K.M; Abdul Haris, A.; Jeena Mathew; Srinivasan, V.; Dinesh, R.; Hamza, H.; Subramanian, P.; Thamban, C.; Chandran, K.P.; Krishnakumar, V.; Ravi Bhat; Hegde, R.; Singh, S.K.Item Effect of different rice establishment methods on soil physical properties in drought-prone, rainfed lowlands of Bihar, India(2016) Surajit Mondal; Santosh Kumar; Abdul Haris, A.; Dwivedi, S.K; Bhatt, B.P; Mishra, J.SItem Effect of different rice establishment methods on soil physical properties in drought-prone, rainfed lowlands of Bihar, India(2016) Surajit Mondal; Santosh Kumar; Abdul Haris, A.; Dwivedi, S.K; Bhatt, B.P; Mishra, J.SItem Heliconia stricta ‘Iris’ An ornamental intercrop for shaded plantations(2019-04) Nihad, K.; Krishnakumar, V.; Abdul Haris, A.; Ravi BhatItem The Influence of Drip Irrigation and Fertilizer Levels on Yield and Photosynthetic Characteristics of Cocoa in Mixed Cropping System with Arecanut(2007-02) Abdul Haris, A.; Balasimha, D.; Sujatha, S.; Ravi Bhat; Abdul Khader, K.B.A study was carried out to determine the influence of drip irrigation and fertilizer levels on the bean yield and photosynthetic characteristics of cocoa mixed cropped in arecanut. The trial was laid out in a split plot design with three irrigation levels as main plot and four fertilizer levels as sub-plot treatments. Four year data after yield stabilization revealed that drip irrigation @ 20 litres of water per tree per day and a fertilizer dose of 100 g N:40 g P2O5: 140 g K2O per tree per year would be optimum for cocoa. This was also supported by better photosynthetic characteristics.Item Intercropping Heliconia with coconut is remunerative(2016) Nihad, K.; Krishnakumar, V.; Abdul Haris, A.Item Marigold-globe amaranth sequential cropping in coconut plantations of coastal humid tropics(2017) Nihad, K.; Krishnakumar, V.; Abdul Haris, A.Item Nutrient deficiency symptoms and its Management in Coconut(2021) Jeena Mathew; Abdul Haris, A.Item Response of high yielding varieties of arecanut to fertilizer levels in coastal Karnataka(1999) Sujatha, S.; Ravi Bhat; Reddy, V.M.; Abdul Haris, A.A field study (1985-1997) was conducted at Central Plantation Crops Research Institute, Regional Station, Vittal to determine the nutritional requirement of high yielding varieties of arecanut. Four varieites, viz. Mangala, Sumangala, Sreemangala and South Kanara Local as main plot treatments and five fertilizer levels, viz. 0:0:0; 50:20:70; 100:40:140; 150:60:210 and 200:80:280 g of N:P205:K20 per palm per year, respectively as sub plot treatments were tried in a split-plot design. Both height and girth increments between first and ninth year of experimentation were found non-significant due to fertilizer levels indicating that application of higher dose of fertilizers would have no impact on growth. Yield (dried dehusked nut) varied significantly in different years. Pooled data (1993-97) revealed that both varieties and fertilizer levels significantly influenced the number of nuts and yield. Interaction effect of varieties and fertilizer levels was also found significant. The fertilizer level of 200 g N: 80g P2O5:280 g K20 per palm per year was found to be optimum for Mangala. Application of lOOg N: 40g P205: 140g K20 per palm per year was found to be ideal for Sumangala and Sreemangala. Economic analysis indicated an appreciable increase in net income and benefit-cost ratio with increase in fertilizer dose. Maximum net income (Rs. 2,31,627/ha) and benefit-cost ratio (4.25) were obtained with a fertilizer level of 200g N: 80g P205: 280g K20 per palm per year.Item Root Distribution As Influenced By Different Methods Of Irrigation In Young Arecanut Areca Catechu L.) Palms(2000) Sujatha, S.; Abdul Haris, A.A two year study (1997 and 1998) on root distribution pattern in young arecanut palms as influenced by different methods of irrigation indicated that highest root dry weight and root/shoot ratio were observed in ferti-drip method with two fold increase in number of feeder roots over drip method and more than four fold increase in number of feeder roots over basin method. Higher concentration of root dry mass was observed within 40 cm radius from the bole in ferti-drip (79%), drip (76%) and basin (82%) irrigation methods with lower proportion of root mass in subsequent layers. This suggests that all methods of irrigation have resulted in shallow root development. It was observed that horizontal spread of roots was influenced by nutrient and moisture availability pattern. Horizontal root spread was more in case of ferti-drip (75 cm) and drip methods (71 cm) than in basin method. Vertical spread of the root system was more or less same with all methods of irrigation (43-58 cm). There was a shift in the rooting pattern of arecanut palms with different methods of irrigation. Root mass per unit area was higher along dripping point plane than between dripping points both in case of ferti-drip and drip irrigation.