Figure 1. (a) Symptoms of A. alternata on poplar in nursery and (b) A close-up view of leaf affected with Alternaria leaf spot

From

Selection of Potent Isolates from a Population of Alternaria Alternata, a Leaf Spot Pathogen of Poplar

Kartik Uniyal, Girish Chandra, R.U. Khan, Y.P. Singh

American Journal of Applied Mathematics and Statistics. 2018, 6(6), 232-238 doi:10.12691/ajams-6-6-3