How to Use "blotch" with Example Sentences

1. Identification of pathogen that causes strawberry brown blotch disease and observation of biological characteristics .
2. Establishment of rapid detection method for the pathogen of hami melon fruit blotch .
3. " How long , " a doctor asked , " have you had this red blotch on your foot ? "
4. He pointed to a dark blotch upon the starry sky some miles astern of us .
5. Effects of climate factors on the epidemic of apple marssonina blotch in shaanxi province and related prediction models .