D. P. Joshi

Abstract

Roadside avenue planting presents a problem different from raising of ordinary forest plantations. On roadsides protection of the plants presents the main difficulty. The technique evolved in Southern Doab Division of U.P. and now applied in whole of the Land Management Circle, U.P., is described.

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D. P. Joshi

Abstract

This note is based on personal experience gained in the felling operations seen in chir, deodar and fir forests of Tehri Circle and plantations of Land Management Circle, in Uttar Pradesh. Importance of correct felling practices in the better conservation of the forests is discussed and two simple Swiss machines namely Seilzug Greif and Stammpresse Simplex, which can virtually eliminate damage in fellings, are described. These machines are still in the introductory stage in Switzerland. The author had the chance to see them during his FAO. Fellowship tours.

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D. P. Joshi

Abstract

Trials in transplanting of sal were done during the years 1955 to 1958 in Haldwani division in B. 3 Type sal areas. The results obtained are described in the note.

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D. P. Joshi

Abstract

Teleonemia scrupulosa Stal (Tingidae), the lantana bug, attack has been observed in Lantana camara on a fairly large scale in the neighbourhood of Bhimtal, Nainital district, killing it outright. A detailed study of the occurrence of the tingid and mortality of Lantana in this area has been suggested for biological control of Lantana.

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D. P. Joshi

Abstract

Starting on experimental scale in 1896 resin production in India to-day has increased to 42,600 metric tonnes which is processed by three major factories and a number of small units. So far only chir pine is tapped. The blue pine and Khasi pine forests and a portion of chir pine forests, still remain to be tapped. The industry can now be sub-divided as resin industry, rosin and turpentine industry, turpentine derivatives industry (of which the Camphor factory is already established at Bareil1y) and the rosin derivatives industry, which is yet to be established. In spite of the expansion of the industry, it needs modernization and improvement in almost all its stages, i.e., in the method of tapping resin, its packing and transport, in the distillation process and various operations in the handling of resin, rosin and turpentine in the factories. The establishment of rosin derivatives industry should not be further delayed. The cost of production of resin and its products needs to be reduced to compete with international price and to increase exports. The research on various aspects of resin industry, particularly for increasing yield of resin per tree, improvement in the distillation process and synthesis of rosin and turpentine into various organic compounds needs to be intensified and research centres need to be developed.

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