• M. Nafees Iqbal

Present experiment was conducted in field by using susceptible varieties of Black gram and Green Gram to evaluate the relative efficiency of chemicals and plant extract against powdery mildew fungi Diseases of black gram and green gram i.e., powdery mildew of black gram and green gram. During 2015-16 & 2016-17. In this session measured the temperature and relative humidity ranges between 10-22 oC and wet weather near about 85 to 90%. Because powdery mildew fungi favorable condition for growth, development, reproduction and disease development on host plant. Observed First symptoms appeared on plant 22 days after germination i.e., White powdery patches appear on leaves and other green parts. Observation was recorded on disease incidence and disease severity before 1st spray, 2nd spray and 3rd spray of chemicals and plant extract at different concentration range. It was confirmed that all used different concentrated chemicals and plant extracts capable to reduce disease incidence and severity as compared to the unsprayed plants i.e., control.

Susceptible varieties, powdery mildew disease, Chemicals, plant extracts, disease incidence. Control over disease

"In vivo Evaluation of Chemicals and Plant extracts against powdery mildew of Black gram and green gram", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 5, page no.236-241, May-2022, Available :http://www.jetir.org/papers/JETIRFO06040.pdf

"In vivo Evaluation of Chemicals and Plant extracts against powdery mildew of Black gram and green gram", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 5, page no. pp236-241, May-2022, Available at : http://www.jetir.org/papers/JETIRFO06040.pdf