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M. N. Asthana , K. C. Thapliyal , K. G. Sood , N. L. Sharma

Abstract

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Mohd. Anis ¹, N. L. Sharma ¹

Affiliations
1 Department of Botany, Meerut College, Meerut, U.P., IN
2 Department of Botany, Meerut College, Meerut, u.P., IN

Abstract

Weed communities of sugarcane crop were determined by using quadrate method at three different sugarcane growing localities of District Meerut, during 2009-10. A total of 14 weed species distributed across 12 families were recorded. Among all weeds, Gnaphalium luteo-album had the highest average density (21.5/m²). Three species were dominant, i.e. Gnaphalium luteo-album (21.5/ m2), Antirrhinum majus (8.5/m²) and Trigonella foenum-graecum (2.2/m²). In the present study, these three species were concluded as the most competent weeds which enter into real competition with the sugarcane crop.

Keywords

Sugarcane, Quadrate Method, Competent Weeds

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U. Bose ¹, S. C. Nagal ², N. L. Sharma ², K. C. Prashra ², V. K. Sharma ², U. K. Bassi ²

Affiliations
1 4/193, SFS, Mansarovar, Jaipur - 302 020, IN
2 S.C.O. 98-100, Sector 17-C, Chandigarh-160 017, IN

Abstract

Pyroclastics are found in all the late Proterozoic clastic formations of the Outer Krol Belt in the Simla Himalaya. The field and petrographic characters leading to identification of the pyroclastics are described here.

Keywords

Petrology, Pyroclastics, Late Proterozoic, Simla Himalaya.

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Shabir Ahmad Rather ¹, N. L. Sharma ²

Affiliations
1 Department of Agricultural Chemistry and Soil Science, A. S. College, Lakhaoti, Bulandshahr (U.P.), IN
2 Department of Agricultural Chemistry and Soil Science, A.S. College, Lakhaoti, Bulandshahar (U.P.), IN

Abstract

A field experiment was conducted at the research farm of A.S. (P.G) College, Lakhaoti, Bulandshahr (U.P) to study the effect of INM on productivity and nutrient uptake in wheat and soil fertility. The yield attributes like earhead length (cm), number of grains per earhead and 1000- grains weight (grams) increased by increasing fertility levels from 50% to 100% and with the integration of vermicompost / FYM and PSB with inorganic fertilizers (NPK and Zn) and were recorded highest with the treatment comprised of 100% recommended fertilizer dose plus vermicompost +Zn+PSB. The significantly higher grain and straw yield of wheat (52.75 and 61.65 q/ha, respectively) were recorded with the conjunctive use of vermicompost, PSB and Zn in collaboration with 100% recommended fertilizer dose as compared to its counter part of 50% recommended NPK, whether applied alone or in combination with FYM, PSB, Zn and vermicompst (VC). Significant improvement owing to appropriate combination of NPK, VC/FYM, Zn and PSB was observed for the nutrient uptake by the crop and the maximum nutrient uptake was noticed due to 100% RFD of NPK + VC +Zn +PSB and minimum with control. The maximum fertility status in terms of available N, P, K and Zn after the harvest of crop as (231.0, 18.5, 130.6 kg/ha and 1.64 mg/kg, respectively) was recorded with treatment T₂₀ comprised of 100% recommended NPK + VC + Zn + PSB.

Keywords

Wheat, INM, Productivity, Nutrient Uptake, Soil Fertility.

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Ashwani Sharma ¹, N. L. Sharma ¹

Affiliations
1 Department of Botany, Meerut College, Meerut (U.P.), IN

Abstract

The effect of Neem leaf litter extract on decomposition of wheat straw in vitro by Aspergillus niger, A.flavus, A.terreus and Tricoderma lignorum was studied. The maximum decomposition was caused in decreasing sequence by T.lignorum (33.8%) A.niger (24.7%), A.terreus (21.57%) and A.flavus (15.26%). The addition of extract of decomposing neem leaves stimulated the decomposition by A.niger and A.flavus by 12.7% and 13.7% respectively, where as by T.lignorum and A.terreus was inhibited by 4.69% and 4.86% respectively. The decrease in the rate of decomposition by T.lignorum can be attributed to the decrease in the activity of polygalacturonase activity but in case of A.terreus, the decomposition was due to carboxymethylcellulase (CMC).The stimulation of decomposition by A.niger and A.flavus can be attributed to increase in polygalacturonase (PG) activity.

Keywords

CMC, PG, LE, Mean, Fungi.

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