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Negi, D. S.
- Plant Responses to Water Stress and Antitranspirants: Changes in Growth and Dry Matter Production of Grevillea robusta A. Cunn.
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Indian Forester, Vol 122, No 1 (1996), Pagination: 43-50Abstract
The effect of water stress and some antitranspirants on the survival, growth and dry matter production of Grevillea robusta A. Cunn. were studied under controlled laboratory conditions. In general, the survival percentage, height of plants, number of leaves per plant, no. of branches per plants, fresh and dry mass of ischolar_mains, stem, branches and leaves decreased with increasing water stress irrespective to control (untreated) as wen as in aU antitranspirant treatments. However, the effect was more prominent under antitranspirant treatments. Commonly the decrease in the said parameter was more sharp from daily to weekJy watering interval than to fortnightly interval. No seedlings could survival under monthly watering interval.
- Effect of Water Stress and Antitranspirants on the Chlorophyll Contents of the Leaves of Pongamia pinnata (L.) Pierre
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Indian Forester, Vol 122, No 11 (1996), Pagination: 1018-1022Abstract
The effect of water stress and some antitranspirants on the chlorophyll contents of the leaves of Pongamia pinnata (L) Pierre, were studied uuder controlled laboratory conditions. The chlorophyll a, b and total, invariably increased from daily to fortnightly watering interval, however there is a sharp decrease in case of monthly watering interval. The chlorophyll a, b, ratio was maximum at weekly watering interval minimum at monthly watering interval. It shows that the mild trees effects the formation/ accumulation of chlorophyll b more than chlorophyll a (weekly watering interval) however, heavy stress destroy both chlorophyll a and b with the result less photosynthesis and low growth (monthly watering interval).- Vegetative Propagation through Branch Cuttings in Dalbergia sissoo Roxb.
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Indian Forester, Vol 119, No 5 (1993), Pagination: 381-387Abstract
Studies on the ischolar_maining response of stem cuttings of Dalbergia sissoo in relation to the Season, age of the mother tree, position of cuttings on shoot axis and treatment with auxins, IBA, IAA and NAA and mixture of NAA + IBA. The study revealed that cuttings taken from 4 years old plants ischolar_mained better when planted in the month of August in comparison to other months. A substantial increase in the percentage of ischolar_maining occurred when treated with IBA 100 ppm in the month of August. The cuttings from younger plants ischolar_mained readily and ischolar_maining percentage fell appreciably in case of cuttings from old tree.- Effect of Nitrogen Treatments on in Vivo Nitrate Reductase Activity in Entrolobium timbouva
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Indian Forester, Vol 117, No 1 (1991), Pagination: 72-75Abstract
No abstract- Vegetative Propagation of Dendrocalamus strictus through Macro-proliferation-II
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Indian Forester, Vol 117, No 8 (1991), Pagination: 621-624Abstract
The earlier study of eight months i.e., August to March (Adarsh Kumar et al., 1988) on vegetative propagation of Dendrocalamus strictus through macro-proliferation was extended by another four months i.e., April to July in order to study the growth behaviour in full one year. It has been found that sufficient number of field plantable propagules can be developed through seedling multiplication. The propagules thus produced. Planted in the field established well and showed culm formation in six months.- Identification of some Fast Growing Leguminous Tree Species for Nitrogen Fixation Studies
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Indian Forester, Vol 116, No 6 (1990), Pagination: 504-507Abstract
Studies were carried out to screen twenty seven different leguminous, fast growing tree species for nodule formation and nitrogen fixation activity. The nodules add nitrogenase (acetylene reduction) activity was present in all the twelve mimosoid, four Papilionoids species and absent in all the eleven Caesalpinioid species examined under pot culture conditions.- Vegetative Propagation of Eucalyptus
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Indian Forester, Vol 114, No 2 (1988), Pagination: 78-83Abstract
Branch and leafy cuttings made from mature trees of Eucalyptus completely failed to ischolar_main whereas the coppice shoot cuttings made from 30 month old trees responded to ischolar_maining to the extent of 65 per cent. Probable reasons for inability of mature tissue to ischolar_main is discussed. A technique to ischolar_main nodal cuttings prepared from coppice sprouts is presented.- Vegetative Propagation of Dendrocalamus strictus through Macro-proliferation
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Indian Forester, Vol 114, No 9 (1988), Pagination: 564-568Abstract
Tbe propagation of Dendrocalamus strictus through seedling proliferation has been studied. It has been found that the mother stock of seedlings can be multiplied four to six times depending on fertiliser application in a period of eight months. The proliferated seedlings are easy to handle and transport as they remain small in size due to continuous rhizome separation. A methodology for multiplication of seedlings has been developed for D. strictus and is reported here.- Trnaspiration, Stomatal, Behavioural and Growth of Eucalyptus Hybrid Seedlings under Different Soil
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