Dolichos biflorus L. is commonly known as Horse gram and Kulthi in Hindi. It belongs to family Fabaceae. The seeds of Dolichos biflorus have several medicinal properties; anthelmintic, diaphoretic, diuretic, etc.  as a well-enriched source of protein and energy. The calorific value and energy structure of Dolichos biflorus vary among the species.  In this study, our aim was to evaluate the varieties of Kulthi for their better adaption and cultivation in the agro-climatic condition of Hazaribag, Jharkhand. Further, the variation in energy content of these varieties in the above agro-climatic condition. We have collected three varieties of Kulthi (Birsa Kulthi-1 to 3) for this study and followed for 105 days, to evaluate the energy content at different time intervals. We observed these three varieties of Kulthi are different in the relative amount of energy storage at maturity. However, all these three studied varieties of Kulthi (Birsa Kulthi-1 ,Birsa Kulthi-2 ,Birsa Kulthi -3) are ecologically suitable for cultivation in the vicinity of the agro-climatic condition of Hazaribagh, Jharkhand, India.

Stone crusher dust produces deleterious effects on growth and development of plants. This study was done on pigeon pea plants grown on different agro-climatic conditions of Nawada district of Bihar to evaluate the effect of stone crush pollution on its biomass. This study was done on samples collected at an interval of 30 days for up to 240 days. Five plants from each group were collected at each time point. The stem and root of the collected samples were evaluated for biomass. At the initial time point, we did not observe any significant difference in biomass in both stem and root among the study groups. However, we observed significantly decreased biomass in both stem and root in plants in the affected area compared with the unaffected area at later time points (90 days onward). Stone crusher dust may affect the plants through encrustation of leaves, plugging of stomata, changes in the quantum of light absorbed by leaves, changes in pH both outside and inside the leaf as well as through modification in soil condition. Further, the significantly reduced biomass may be due to inhibition of the metabolic activity of plants in affected areas. The present study gives the evidence to the fact that stone crusher dust pollution is harmful to pigeon pea plants off all ages, irrespective of the stage of growth and development.