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Site characteristics and regeneration studies of bani oak (Quercus glauca Thunberg) in Himachal Pradesh

KrishiKosh

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Title Site characteristics and regeneration studies of bani oak (Quercus glauca Thunberg) in Himachal Pradesh
 
Creator Tesfaye, Amare
 
Contributor Bhardwaj, D.R.
 
Subject germinability, sowing, regeneration, fruits, area, stratification, biological development, biological phenomena, seed treatment, wood
 
Description The study was carried out at Quercus glauca bearing forests of Solan, Nareg and Sarhan forest ranges of
Himachal Pradesh, India during the year 2013-2015. Six forest sites viz.: Solan,Oachghat, Deothal, Narag, Chakla and Tikri were non randomly selected to assess effects of phytosociology, stand characteristics and site conditions in natural regeneration of the species as well as effects of stratification media, stratification duration, acorn size and pre-sowing treatments on germination and growth characteristics Quercus glauca seedlings. Data collection, analysis and interpretation were conducted based on standard field, laboratory and statistical procedures. Stand structure, species composition, site characteristics and status of natural regeneration varied a lot in the study sites. Natural regeneration of Quercus glauca was better at Oachghat and Narag forest sites, in which major tree associates were Machilus duthiei, Dalbergia sissoo, Bauhinia variegate, Pinus roxburghii, Pyrus pashia and Myrica esculenta. Natural regeneration of Quercus glauca was positively related to soil moisture content, organic carbon and organic matter layer and it was negatively related to soil pH and solar influx. In general, natural regeneration increased with increase in tree density but it decreased with increase in shrub and herb density. In the stratification trial, highest germination of acorns were recorded under farmyard manure media (51.8 %) and 45 days stratification duration (49.5%). Shaded growing conditions had been found better in germination, survival and seedling growth characteristics than open nursery conditions. Germination was higher in nutrient rich stratification media. Total sugar content was increasing, whereas, starch and soluble protein content of acorns was decreasing with increase in germination. Application of 100 ppm GA3 treatment and exposed embryo had higher germination
for chemical and physical pre-sowing treatments under laboratory conditions, respectively. Physical pre-sowing treatments had also better performance in germination than chemical pre-sowing treatments. The study concluded that maintaining tree density and plant associates that enhanced natural regeneration of Quercus glauca should be preserved for the sustenance of the species. The use physical pre-sowing treatments in combination of shaded growing conditions should be encouraged for artificial reproduction of the species.
 
Date 2016-04-30T14:55:00Z
2016-04-30T14:55:00Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/65688
 
Language en
 
Format application/pdf
 
Publisher YSPU