A. R. Nautiyal , D. C. S. Rawat , Pankaj Prasad

Abstract

Seeds of Q. leucotrichophora A. Camus were collected from seven places in Garhwal and Kumaun regions varying considerably in their longitude, latitude and altitude and tested for their seed attributes, germinability, seedling growth and survival. Provenances differed from each other in mean seed weight, germinability of seeds and seedling growth. However, differences were significant more in rate of germination than total germination percentage. Didihat seed source gave best results over all other seed sources.

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P. Prasad , A. R. Nautiyal

Abstract

Nitrogen enrichment of the soil at different depths through plantation of some fast growing nitrogen fixing tree (NFT) species in comparison with a Don-NFT species was studied after five years of plantation. All the NIT species enriched the upper stratum of soil (0-5 cm) which ranged from 10 to 50% increase in the N contents varying with species. However. Out of the four NFT species studied onJy A. stipulala brought out an increase in the contents of the lower strata of soil i.e. at 15-20 cm and 30-35 cm in depth. The seven year old stand of O. dalbergioides also brought an increase in N content of the soil at all three depths studied but the 5 year old stand exhibited at top level only.

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R. C. Uniyal , A. R. Nautiyal

Abstract

Nursery techniques for improvement of germination of Litsea lanuginosa seeds have been described in this paper.

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