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A. K. Raina , M. N. Jha , S. C. Pharasi

Abstract

Micro-morphological investigations of sodic soils were carried out at five different locations having variation in vegetation of same age group in Sultanpur and Raibareilly districts of Eastern Uttar Pradesh. These soils contained sufficient oriented clay to meet argillic horizon requirements. However, most of the cutans observed in the B horizons including grain argillans and striated void argillans were formed due to stress rather than illuvial features. B horizons of these soils have been enriched with secondary carbonates. The lattisepic and skel-masepic plasmic fabrics resulted from the moderate to high shrink-swell characteristics of these sodic soils. The sodic soils of Khara, Kanaksinghpur and Ramshahpur exhibited calcans and neocalcans in the B horizons that superimposed argillans. AU five pedons were polygene tic, as indicated by pedogenic carbonate features that were associated with argillans of these soils.

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A. K. Raina , M. N. Jha , S. C. Pharasi

Abstract

Soil formation in relation to forest vegetation were studied in seven blocks of Raipur range of Mussoorie Forest Division, Uttaranchal (altitude 8OO m to 2,000 m above msl). The physical and chemical attributes of the soils under different forest covers were related to various vegetational parameters. The results showed that organic matter content was generally higher in different forest vegetation at high attitudes than at lower ones. Cation exchange capacity of the soils of different profiles showed in consistent trend. Illuviation of clay and sesquioxides had taken place in the B horizons of all the soils. Base saturation percentage in the surface horizons of all the profiles varied from 43.9 to 64.3, while the range in pH was from 5.5 to 6.8. As the clay illuviation was more pronounced in the profiles from Ringalgarh, Sripur and Dwara blocks, these soils appeared to be more developed than the soils of Lad pur, Raipur, Rajpur and Mahipur blocks.

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A. K. Raina , M. N. Jha , S. C. Pharasi

Abstract

Fine sand mineralogy of some selected horizons of the soils ofRaipurrange ofMussoorie Forest Division (Uttar Pradesh) were investigated. Light minerals constituted bulk of fine sand fractions and consisted of quartz, feldspar and mica (muscovite) in order oftheir abundance. Heavy minerals occurred in minute amounts and were dominated by opaque minerals, biotite, calcite, chloritised mica, zircon, garnet, hornblende, tourmaline and rutile. Differences in mineralogical make up were mostly associated with nature and composition of parent material and degree of weathering. The soils, in general, contained low to moderate amount of weatherable minerals indicating their podzolic nature and much less contribution of nutrients from minerals to the soil labile nutrient pool.

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A. K. Raina , S. C. Pharasi , K. G. Prasad

Abstract

A general relationship between geology, soil and vegetation in the Kanasar Range of Chakrata Forest Division, Uttar Pradesh was evaluated. Geologically the rocks of the study site are of Pre-Cambrian to early Paleozoic in age with recent and subrecent deposits. Soils belongs to Typic Paleudoll (Konain series), Typic Argiudoll (Deoban series), Typic Paleudult (Kanasar series) and Humic Hapludult (Budher series) and all these polypedons are members of fine loamy, mixed, messic family. Vegetation of the study area is a climatic climax and falls under 12/C-Himalayan moist temperate forests. The study revealed that basal area of Cedrus deodara increased with increasing calcite content and decreased with increasing dolomite content. The study further indicated that relief and age acting on geology of Kanasar Range govern the existing soil whereas effect of altitude and climate on geology gives rise to natural vegetation. Climate and aspect on a particular site have given rise to existing floristic composition and also different pedogenic processes active at the site.

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A. K. Raina , S. C. Pharasi , Pramod Kumar , K. G. Prasad

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Three soil profiles under Cedrus deodara, Pinus roxburghii and Picea smithiana were studied for sand mineralogy in the Chakrata Forest Division of Uttar Pradesh. Quartz is the most abundant light mineral in all the profiles followed by mica which is present in relatively higher amount in the lower depth. Heavy minerals occur in small quantities or in traces only. The presence of iron-minerals indicate the movement of water inside the depth or profiles which show podzolic nature. The soil under Cedrus deodara/I> is of lower ferlility as compared to others. Although a direct relationship of the vegetation with the sand mineralogy of soils is not apparent, the low levels of weatherable minerals is a favourable feature for supporting the vegetation in its present state.

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A. K. Raina , S. C. Pharasi , K. G. Prasad

Abstract

Experiment was laid out to know the effect of N, P and Zn on germination, survival and growth of Acacia catechu seedlings in nursery. Basal dose of chemical fertilizers decreased seed germination and survival. It was observed that 10 ml solution per bag of O.2% each of urea and superphosphate applied 10th and 13th week and 10 ml per bag of O.02% zinc sulphate solution applied 15th week after seed sowing increased the height growth of seedlings. Using this method, plantable seedlings were ready within 16 to 18 weeks of sowing directly in the polythene bags, thus saving time, money land and labour.

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A. K. Raina , K. G. Prasad , S. C. Pharasi , K. S. Kapoor , S. B. Singh

Abstract

An experiment comprising 3 levels of nitrogen (0, 50 and 100 ppm) 3 levels of P₂O₅, (0, 50 and 100 ppm) and 7 application dates of each, was conducted in nursery to see tbeir effect on some important growth parameters (plant height, tiller and leaf number, Collar diameter and biomass production) of Bambusa Tulda.biomass production) of Bambusa tulda. Results recorded arter 17 weeks of germination revealed that for all growth parameters, separate application of nitrogen was superior than phosphorus application but their combined applications were always better than individual application. Among the doses, N₁₀₀P₅₀ was found best. Split applications of nutrients 4, 6 and 8 weeks after germination gave best results.

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B. G. Dabral , S. P. Pant , S. C. Pharasi

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The paper details the ischolar_main habits of Eucalyptus grown in isolation in pots and in a community In large sized lysimeters and in the plantation. Different ischolar_main habits were observed. In general, ischolar_mains avoid the path taken by existing ischolar_mains. Environment especially bulk density of the soli mass exerts a profound influence upon the ischolar_maining pattern. No interspecific or intraspecific ischolar_main grafting was observed but self-grafting was noticed in Eucalyptus hybrid ischolar_mains. The observations discussed in the paper are not exhaustive but indicative of the ischolar_main habits, this Species is capable of adopting. Considering the vast area, different soli types and agro-climatic zones, where Eucalyptus grows and managed by the differing silvicultural practices, the studies need to be taken up on widespread area. Tbe studies assume an added importance considering the large scale planting of Eucalyptus spp. In agro-forestry and social forestry.

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B. G. Dabral , S. P. Pant , S. C. Pharasi

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B. G. Dabral , S. P. Pant , S. C. Pharasi

Abstract

The paper details the ischolar_maining behaviour in Sal (Shorea robusta) tree at a site having compacted soil and with a hard pan formation. The tap-ischolar_main extended upto 1.2 m only. Lateral ischolar_mains extended upto a length of about 12 m in the direction of a 'nala', thereby sbowing that with shallow tap-ischolar_main, long lateral ischolar_mains running parallel to the soli layers get formed, to meet the water needs of the tree especially in hot dry season.

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R. M. Beri , S. C. Pharasi

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The proximate analysis of Urginea indica bulb powder and that of the mucilage isolated from its 2 per cent solution by precipitation with alcohol is described. It contains approx. 51 per cent of the mucilage. Properties of the mucilage have been described and compared with substances having similar properties. Bulb powder and the mucilage possess a very high swelling power in water. Viscosities of their solutions at different concentrations, and the effect of temperature on viscosity is described. Bulb powder possesses good adhesive properties. It was tried as a thickening material in Calico Printing and has indicated great possibilities for its use as a thickening agent for colours to be used in screen printing of textiles.

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