P. K. Khatri , N. G. Totey , R. K. Pandey

Abstract

Three major tree communities were identified in the Satpura National Park, Madhya Pradesh i.e. Chloroxylon-Terminalia community at elevation range <900m (Lower hills). Shorea - Terminalia community at 900-1100m elevation (Middle hills). Syzygium- Terminalia community at 1l00-1350m elevation (Upper hills). There was decrease in density with increasing altitude. On the hasis of basal area and density Shorea robusta preferred the mid hills, Chloroxylon swietenia performed better at lower bills and Syzygium cumini preferred to grow in upper hills. The distribution pattern of species is contiguous. Diversity index of tree species in three plant communities i.e. Chloroxylon-Terminalia, Shorea-Terminalia and Syzygium-Terminalia was 3.62, 2.71 and 3.02 respectively. High species diversity is an indication of maturity in the ecosystem. The tree species richness was 45, 29 and 31 at <900m, 900-1100 m and 1100-1350m elevation respectively. Forest belonging to Chloroxylon-Terminalia is biodiversity rich area because of more number of species. There are 29 shrub species under Chloroxylon-Terminalia, community followed by 27 shrub species under Shorea-Terminalia community and only 19 shrub species under Syzygium-Terminalia community. In corresponds to species diversity index of 3.85, 3.16 and 2.57 respectively. Diversity index of herbs in these communities was 3.53,3.44 and 3.26 respectively, which corresponds to herb species richness in term of individual members of 43, 40 and 37.

Full Text

     

R. K. Goel , R. K. Pandey

Abstract

Analysis of condensed tannins content in Quercus serrata and Q. semecarpifolia shows a 3.5 fold and 1.5 fold increase over a period of 45 days of leaf-growth respectively, In Q. semecarpifolia, where there is almost constant level of condensed tannins, preponement of silkworm rearing is not requind but the synchronisation of brushing with leaf sprouting is emphasized for getting maximum sunival of A. proylei J. worms, whereas in Q serrata, early brushing of larvae is quite essential in the light of increased level of condensed tannins from 0.45 per cent to 1.55 per cent within 45-47 days of leaf sprouting.

Full Text

     

R. K. Bahl , R. K. Pandey

Abstract

North-east Himalayan Oak, Quercus serrata Thunb. was introduced in Western Himalayas at different locations in Himachal Praiesh. At 4 years of age, average shoot heigbt was observed to be between 151-279 cm with 10-21 cm diameter. Considerable variation in growth rate was evident between different locations, which was due to differences in altitude. Low altitude areas (790-1140 m ASL) were found to be more suitable for the recruitment of Q. serrata in Himachal Pradesh.

Full Text

     

R. K. Pandey , R. K. Bahl , P. R. T. Rao

Abstract

It is demonstrated here that a commercially available soil inoculant of nitrogen fixing bacteria, Azotobacter chroococcum promotes growth of Q. Serrata seedlings so much so that 106% more leaves were harvested from the seedlings inoculated with Azotobacter. There was also 15.38% increase in shoot length and 28.6% increase In ischolar_main length. The dry weight of shoot and ischolar_main also increased upto 45% and 70.7% respectively. This nursery trial warrants determination of the effectiveness of Azotobacter in commercial field applications to increase soil nitrogen of forest and range sites having Q. serrato which may in turn help in increasing the productivity of Oak-Tasar Silk.

Full Text

     

R. K. Pandey , T. R. Dutta , R. P. Singh , S. D. Gupta

Abstract

Field experiments were conducted at Jhansi in 1970-71 for the control of bush and broadleaf weeds in natural grasslands dominated by spear grass (H. contortus) , Picloram (Tordon 10 K pellets), 2, 4-D amine and atrazine with nitrogen application were tried. Tordon 10 K pellets @ 15-30 kg/ha applied as broadcast killed Z. nummularia. M, himalayana, L. camara, C. spinarum. S virosa and Z. xylopyrus in monsson season. The older and semiabsorbent plants of Z. nummularia. C. spinarum. S. virosa, Z. xrlopyrus escaped kill showing Merely defoliation with greater degree at higher dose. B. monosperma, A. leucophloea and F. indica did not respond to Picloram pellets. This herbicide also caused excellent control of existing broadleaf weeds. On the basis of pooled data of two yeara Trial. Tordon 10K pellets at 30 kg/ha appeared slightly more efficient over 15 kg which promoted grass yield by 59%. Top dressing of 50 kg N/ha as calcium-ammonium-nitrate (pellets) significantly ecvalted grass production over no nitrogen and saved application cost of Tordon in combined application.

Full Text