R. S. Singh , D. R. Singh

Abstract

High valued medicinal plant of Noni (Morinda citrifolia L) were grown in Varanasi (25°18 N 83°01 E) during 2007-09 to assess the agro-climatic potential on the crop cultivation in sub-tropical and dry sub-humid conditions. The germination and emergence of noni seeds at an ambient temperature ranged between 23 and 36°C of September conditions has been studied. Highly significant linear relationships between the leaf tip appearance number (Y) and the heat units (X) was developed: Y = 0.0038X + 0.4823 with cc = 0.998 (significant at 1% level) for the seedling stage of the crop after the emergence. This indicated that the seedlings took about 254°C of growing degree days (GDD) for producing each new leaf tip before its transplantation. The, agro-meteorological measurements visualised that the noni seedlings growth ceased when ambient temperature was either < 12°C or > 40°C under Varanasi conditions. Study also indicated that the leaf tip production was the fastest (156°C leaf) on the plant under partial shading treatment (T2) followed by zero shading (T1) treatment (177°Cd leaf^-1) and partial shading with compact soil (T3) treatment (201°Cd leaf^-1) plants, after the transplantation. Height of the main shoot (MS) of the plants has increased rapidly and measured to highest (4.25m) again under T2 treatment followed by 3.0m under T1 treatment and lowest (2.95m) under T3 treatment at the end of second season (November 2009). Growing period for the noni crop was found nine months (270 days) from March to November. The plant took about 75 to 90 days time and at least 1250 to 1600°C of GDD for proper fruit development and to reach at semi ripening stage in Varanasi area.

Keywords

Noni (Morinda citrifolia L.), Growth and Development, Flowering and Fruit Setting, Ambient Temperature And Relative Humidity

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P. Barua , P. Deka Bhuyan , R. S. Singh

Abstract

No abstract

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N. K. Shukla , K. R. Singh , R. S. Singh

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Based on tests carried out on small clear specimens, the physical and mechanical properties of Robinia pseud-acacia, Fraxinus spp., and Ailanthus spp., obtained from Srinagar (J & K), are reported, discussed and compared with Robinia pseud-acacia (U.S.A.), Fraxinus excelsior (UK) and Ailanthus Integrifolia (Buxa. W.B.) and also with Tectona grandis. The safe working stresses and comparative suitability indices for various industrial and engineering uses have also been evaluated and reported. It is observed that although Robinia pseud-acacia and Fraxinus spp. From Srinagar (J & K) are slightly heavier than their U.S.A., and U.K., counterparts in strength properties the former are not consistently superior. Based on the strength propeties, the end-uses of Robinia pseud-acacia and fraxinus spp. are also suggested.

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R. S. Singh , K. K. Singh

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An attempt was made to find out the possibilities of successfully utilizing air and ground layering either with or without the aid of plant growth regulators, as the means of propagation of D. floribunda. The application of NAA in 100 ppm concentration was found to be most effective, in which 90.0% and 80.0% of the treated nodes ischolar_mained in case of air and ground layering, respectively. The time taken for the initiation of ischolar_mains with this treatment was least. The formation of shoots with 100 ppm NAA treatment was 70.0% and 44.0% of the total layers in case of air and layering, respectively.

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K. S. Bhatia , R. S. Singh

Abstract

Rainfall data for the twenty years period from non-recording raingauge and fifteen years period from syphon type automatic raingauge for Rehmankhera, Lacknow has been analysed in this paper for rainfall intensities for various duration, estimation of extreme probable maximum rainfall, erosion index values and their correlation with soil loss, so that data is readily available for soil conservation works. Expected maximum rainfall intensities for different duration and recurrence interval have been calculated so that peak rate of runoff is predicated by putting the value of I in the runoff equation Q = CIA. The probable yearly maximum rainfall has been found as 1726 mm. The erosion index values bave been found as 219,318 and 404 for 2,5 and 10 years frequency respectively, The mean monthly EI values have also been calculated. Erosion-index distribution curve has been prepared to indicate erosion hazards at various stages of crop growth and EI values have been correlated with soil loss.

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R. S. Singh

Abstract

A systematic study of the utility of photogrammetry as applied to forestry, divided into qualitative and quantitative aspects have been dealt with. Most of the analysis work is a result of Spectral Response Function on the interpretation side, and the work of volume determination, etc., are based on sampling theory and ecological information. The ability to represent certain statistical data based on metric characteristics of aerial photographs, have given rise to a sound scientific description which deserves a reasonable position in the modern forest studies. The treatment is suggestive rather than exhaustive. The knowledge of forestry coordinated with reasonable photogrammetric background is bound to increase the stock of know hows. Since, photogrammetry has not been used in forestry in our country, it is suggested that an attempt should be made in this direction and aerial photographs should be obtained of selective and random species at varying scales and studied under the following context. 1. Photointerpretation, (Qualitative studies). 2. Quantitative studies. Infallibility of obtaining results. This can be developed in the following directional studies: (a) Correlative study of ground object and photo image. (b) Correlating ecological studies. (e) Correlating phenological studies. (d) Correlating height, crown diameter and volume. (e) Response of Minus Blue filter. 3. Development of standard tables or nomograms and thereby climinating computation work. 4. Standard, to be laid down for forest photogrammetric studies. 5. Easy approach by less trained personnel so that maximum utility is derived at less cost. 6. Cost considerations. With the potentialities and the utilities which the aerial photographs hold for forestry, it is hoped that the Indian Forest Service would take up the technique.

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R. S. Singh

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Remote sensing by a media other than ordinary black and white photography is comparatively new science and it has wide applications in different fields. Its usefulness in forestry has been brought about in this paper. Different kinds of remote sensore are briefly sated. Ways and means of species identification and disease detection, time and season of photography, methods of finding tree count, crOwn diameter, tree heights and timber volume, film types and spectral ranges most suitable for forestry are discussed.

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K. S. Bhatia , R. N. Gupta , R. S. Singh

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Twenty years rainfall data of Rehmankhera (Lucknow) have been analysed in this paper. Mean monthly, percent distribution, expected rainfall at different percent chance, frequency of continuous dry days, daily maximum rainfall, variability of annual rainfall, its distribution and trend have been presented. Monthly data showed a great variability in rainfall. About 76% of rainfall was concentrated in monsoon season. Rabi season received only 9.9% rainfall which will cause failure in Rabi season crop without adequate measures for conserving moisture and without providing irrigation facilities in the region. Weekly rainfall has great importance in crop planning than monthly seasonal or annual rainfall. Probability and frequency analysis of rainfall data have been done which provides more useful tool for application of such data. One year out of every ten years has been found to be drought year.

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