During aerobic and anaerobic decomposition of plant and animal reside a complex aggregate of brown to dark coloured amorphous substances is obtained which is called as Humus. It includes humic substances and resynthesizes products of microorganisms. These products are stable and a part of the soil. Humus is categorised according to their molecular weights and solubility into humus, humic acids and fulvic acids. Humic substances are the organic material naturally present in soil. Humic substances positively effect’s soil quality and fertility by increasing its water holding capacity, stabilisation of soil structure, soil microbial activity, plant physiology. It also influence nutrient uptake and root architecture act like phytohormones for phosphorus acquisition, and improving plant adaptation to saline condition. Humus is the primary microhabitat for microorganism such as dictyostelids, myxomycetes, some species of protostelids, members of the genus Copromyxella etc. Other than that auxin like activity of Humic Substances has also been demonstrated in recent studies. The research suggested that it could be the main biological factor that exhibits positive effect on plant physiology. Based on that fertiliser factory also trying to produce are bio- stimulants, based on humic substances and other organic compounds.

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Ten germplasm of stored chickpea were tested for their resistance against pulse beetle, Callosobruchus chinensis L. under laboratory conditions during the year 2013 and 2014 at the Department of Entomology, Narendra Deva University of Agriculture and Technology, Kumarganj-Faizabad. In above germplasm, the per cent seed moisture, per cent seed infestation, per cent seed germination and chemical composition of the seed were evaluated on the basis of their storage period before and after three months of storage. The results revealed that none of the germplasm was completely immune to the attack of C. chinensis. However, their response varied statistically significantly. Per cent infestation being main index of resistance, germplasm DCP 92-3 was found significantly highly tolerant and BG-256 least tolerant followed by NDG11-5, NDGK 98-8, NDG 93-1, NDG 97-1, IPC 2004-52, BG-362, BG 50-28 and NDG 12-1, were significantly susceptible. The co-efficient of correlation between per cent infestation with per cent moisture content, protein content and fat content was positive significantly, and per cent germination was negative significant.

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