R. L. Srivastava , Ashok Kumar , S. K. Sharma , C. J. S. K. Emmanuel , U. K. Tomar

Abstract

Keeping in view the low productivity of forestry plantations in Rajasthan and Gujarat, an effort has been initiated to enhance the productivity of bamboo plantations using improved planting material raised either through clonal methods or through tissue culture. These trials have been established at Chakhalia, Jhalod (Gujarat); Kushalgarh (Rajasthan). In total 50 ha area has been covered under these specialty plantations, the bamboo species considered for planting are Dendrocalamus strictus and Bambusa bambos. In these performance trials some experimentation were also laid out to see the effect of soil amelioration using organic and inorganic manures and effect of spacing on the growth and productivity of the bamboo plantations. The spacing used are 5m × 5m and 6m × 6m. The initial establishment's results are quite encouraging in both the states. In Gujarat survival percentage ranges from 97.2 % to 100.0% for both the species whereas in Rajasthan sites it was 67.6% to 96.8% (Kushalgarh). The differences observed in the survival percentage may be due to altitudinal variations as the altitude of Gujarat site is 259 m amsl whereas it was 457.20 m amsl for Rajasthan sites. The overall growth performance of both the species is quite satisfactory. Initial inferences can be drawn from these trials is that bamboos can be introduced in both the states in Agroforestry systems.

Keywords

Bamboo Plantations, Dendrocalamus strictus, Bambusa bambos, Productivity, Tissue Culture, Rajasthan, Gujara

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Shivesh Kumar , S. K. Sharma , Tarun Kant , C. J. S. K. Emmanuel

Abstract

No abstract

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M. S. Rawat , D. P. Uniyal , C. J. S. K. Emmanuel

Abstract

Creation of seed production areas is an important step in the Tree Improvement Programme for the interim supply of superior seed for afforestation till the seed orchards become fully productive. In Teak seed production areas the production of seed is not only insufficient but its collection is also difficult and expensive. Hence a new approach has been suggested, keeping in view the excellent coppicing capacity of Teak, for higher production of seed per tree and making the collection easier and cheaper.

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P. K. Gupta , R. S. Pal , C. J. S. K. Emmanuel

Abstract

Studies on fruiting in neem in the 3 year old provenance trial raised at AFRI, Jodhpur, was carried out during June 1995. Analysis of recorded data indicate that 206 trees (25.52%) of plants exhibited fruiting in the third year with variations depending on different provenances; 30 plants (3.72%) exhihited flowering at the time when the other trees were fruiting. In 2 plants (0.25%), flowering and matured fruits were observed occurring at the same time. One plus tree with respect to the extent of fruiting was identified from the Kanpur provenances, Tree No. 46.

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M. S. Rawat , C. J. S. K. Emmanuel , D. P. Uniyal

Abstract

The present article reviews the work undertaken, for various tree species, on vegetative propaption together with its advantages and limitations. Various methods of vegetative multiplication are outlined along with the respective example of classified tree species. The problems faced while practising the techniques in the field have been briefly discussed together with their possible solutions. The article also deals with the after care of the ramets and emphasizes various operation for economically maximising the goal value under Indian conditlions.

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S. Nautiyal , T. C. Pokhriyal , C. J. S. K. Emmanuel

Abstract

No abstract

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C. J. S. K. Emmanuel , M. L. Kapoor , V. K. Sharma

Abstract

The paper summarizes the research work carried out on forest genetics and tree improvement of important forest tree species by Forest Research Institute, Dehra Dun and its sister organizations during the past three decades under different projects/schemes. The species taken up for genetic improvement were Tectona grandis, Bombux ceiba, Pinus spp, Dalbergia sissoo, Santalum album, Morus alba, Pterocarpus santalinus, Acacia nicotica, Acacia catechu, Eucalyptus and Albizia spp. Different methods of genetic improvement viz. selection, hybridization, induced polyploidy and induced mutageneis, were tried. This task also involved the selection of plus trees, creation of seed production areas, establishment of seed orchards, and laying of provenance trials etc. Apart from genetic improvement, work was also carried on vegetative propagation by budding, grafting, air layering including tissue culture and suitable techniques developed which have great potential for establishing clonal seed orchard, and conservation and multiplication of desired novel genotypes.The significant achievements made in these directions are detailed in this paper.

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R. K. Vakshasya , C. J. S. K. Emmanuel

Abstract

An abnormal seedling of Teak (Tectono grandis), in respect of chlorophyll deficiency causing variegation in leaves, has been reported.

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C. S. Venkatesh , R. S. Arya , C. J. S. K. Emmanuel

Abstract

Air layering and budding in Semul (Bombax ceiba L.) are briefly described. The advantage of budding over the standard cleft grafting method is indicated.

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C. S. Venkatesh , C. J. S. K. Emmanuel

Abstract

The occurrence of polyembryonic twin seedlings is reported for the first time in this economically useful tropical broadleaved tree.

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