• PRADIP KUMAR BANDYOPADHYAY

Three study plots (100' x 100') were established for the present investigation in which Plot-I was having one year old plantation, Plot-II having two years old plantation and third one was having three years old plantation. Each plot had 16 micro plots each of which was 20' x 20' and the gap between each micro plot was 5'. Plants were raised in 2'x 2' spacing both for mono crops and mixed crop. Vegetative slips of cultivated variety of aromatic grass Cymbopogon winterianus var.Jorlab-2(Java Citronella) and Cymbopogon flexuosus Stapf. Var.OD-19 were raised as Mono crop-I(M1) and Mono crop II(M2) respectively. Mixed crop was raised utilizing these two mono crops. Effect of plantation in coal mine fallow land showed a range of changes in soil physico-chemical, biological and biochemical properties in relation to plantation age and crop type Plantation cause significant changes in soil biological and biochemical properties enhance microbial activities and increased occurrence and distribution of Vesicular-arbuscular mycorrhiza (number of chlamydospores in the soil) in coal mine fallow land. Changes with plantation age revealed that maximum magnitude of increment was occurred for all the characteristics under mixed crop plantation with age. Soil of 3 years old plantation showed a high tune of increment for soil fungal biomass, density of total acarina population and oribatid mite, soil microbial biomass – C content, rate of soil respiration, number of VAM fungi spore except in density of collembola. Collemobolan density slightly decline under 3 years old plantation than that of 2 years old plantation. Humus component analysis revealed that volume of herbaceous litter remained high in coal mine fallow land than any of the plantation plots. It was minimum under 3 years old plantations of mixed crop. Fragmented litter component was maximum in 2 years old plantation under mixed crop and then decline to some extent in the 3 years old plantation crops. Results showed that for all the yield related components and yield of the plant mixed crop plantation provided the best performances than any of the two mono crops. Performance of crops was increased with the increased age for all the crops. The two mono crops (M1andM2) showed almost similar trend of performance for all the characters. However, for certain characteristics and yield M2 showed better performance than M1.

Fallowland, Cymbopogon plantation,Soil Respiration, Plant Yield Correlation Regression

"Plantation on unproductive fallow land and its consequences: A statistical Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.b272-b280, June-2022, Available :http://www.jetir.org/papers/JETIR2206138.pdf

"Plantation on unproductive fallow land and its consequences: A statistical Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppb272-b280, June-2022, Available at : http://www.jetir.org/papers/JETIR2206138.pdf