2. Institutional Publications
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Item Forest nursery technology and management(Kerala Agricultural University, 1999) Gopikumar, K; Jayasankar, ,S.; Dhaneshkumar, P.Item Dridadharukkal: Krishiyum Paripalanavum(Kerala Agricultural University, 1997) Gopikumar, KItem Mangium(Kerala Agricultural University, 1995-07) Animon, M.M.; Gopikumar, K; Santhosh Kumar, ,SItem Mrududarukkal : Krishiyum upayogavum soft wood timber trees - Silviculture and utilization(Kerala Agricultural University, 1996) Gopikumar, K; Animon, M M; Santhosh Kumar, SItem Pappaya(Kerala Agricultural University, 1988) Valsalakumari, P K; Aravindakshan, M; Gopikumar, KItem Effect of phased october plantings and plant density on growth and yield of cabbage var. golden acre(Kerala Agricultural University, 1980) Vasantha Kumar, K; Indrasenan, G; Gopikumar, K; Balasubramaniyan, P PItem Correlation between seed and seedling characters in jack (Artocarpus Heterophyllus L.)(Kerala Agricultural University, 1980) Nazeem, P A; Gopikumar, K; Kumaran, KItem Evaluation of jack fruit (type 'varikka') for pectin(Kerala Agricultural University, 1982) Vilasachandran, T; Kumaran, K; Gopikumar, KItem Promising variety of sapota for tropical homesteads(Kerala Agricultural University, 1987) Aravindakshan, M; Valsalakumari, P K; Gopikumar, KItem Vegetative propagation in jack (Artocarpus Heterophyllus Lam)(Kerala Agricultural University, 1984) Nazeem, P A; Gopikumar, K; Kumaran, KStudies were conducted on vegetative propagation of jack. Grafting, budding and layering were tried. Approach grafting was found successful. All other methods of grafting, budding and layering on bearing tree gave negative results. Layering on one year old seedlings gave very good results. Best results were obtained with ring layering done within 10 cm from bottom of the plant with coconut pith as the media. Since juvenile factor is supposed to play an important role in rooting, it may be possible to propagate jack vegetatively by inducing new shoots near the collar region of the selected mother plants and then undertaking layering on these new shoots.