Survival and growth of seedlings of Rudraksh (Elaeocarpus ganitrus) under varied canopy conditions after transplant
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چکیده
An experiment was carried out to study the survival and growth of the nursery seedlings of Rudraksh (Elaeocarpus ganitrus) transplanted in the forest stands having dense, sparse and open canopy. The transplants exhibited better growth in terms of shoot length, collar diameter, leaf number and leaf area and survival in dense than in sparse and open canopy. The pathogen attack on seedlings was more in open canopy whereas spider webs were more in sparse canopy. The damage by herbivory was more in open and dense canopy as compared to sparse canopy. Based on the present observations, it is suggested that plantation of Rudraksh should be raised as understory under the established forests/plantations with small canopy gaps or in slightly shaded localities for better success. Resumen: Se llevó a cabo un experimento para estudiar la supervivencia y el crecimiento de plántulas producidas en vivero de rudraksh (Elaeocarpus ganitrus), transplantadas a rodales de bosque con dosel denso, ralo y abierto. Las plantas transplantadas al bosque con dosel denso mostraron un mejor crecimiento en términos de longitud del vástago, diámetro basal, número de hojas y área foliar, y mayor supervivencia que las plantas transplantadas bajo los doseles ralo y abierto. El ataque de las plántulas por patógenos fue mayor en el dosel abierto, mientras que hubo más telarañas en el dosel ralo. El daño por herbivoría fue mayor en los doseles abierto y cerrado en comparación con el dosel ralo. Con base en estas observaciones, se sugiere que para obtener un mayor éxito, la plantación de rudraksh debe ser establecida a manera de sotobosque bajo plantaciones/bosques establecidos que tengan pequeñas aberturas del dosel, o en localidades ligeramente sombreadas. Resumo: Uma experiência foi efectuada para estudar a sobrevivência e o crescimento das plântulas de “Rudraksh” (Elaeocarpus ganitrus) transplantadas para parcelas florestais que apresentavam copados densos, esparsos e abertos. As plantas transplantadas exibiram um melhor crescimento em termos de comprimento do lançamento terminal, diâmetro do colo, número de folhas e área folhear, bem como sobrevivência, sob os copados densos em comparação com os ralos e abertos. O ataque de patogénicos nas plântulas foi mais intenso nas parcelas com copado aberto enquanto as teias de aranha eram em maior número nas parcelas de copado esparso. Os danos causados pelos herbívoros foram maiores nas parcelas com copado aberto e denso quando comparado com as parcelas com copado ralo. Com base nas observações presentes, sugere-se que para um melhor sucesso a plantação com “Rudraksh” deve ser efectuada no sob coberto da floresta/plantação estabelecida com pequenos aberturas no copado ou em locais com sombreamento ligeiro.
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