Onion is one of the most important commercial vegetable crops grown intensively in world. Purple blotch found all growing regions destructive onion diseases. Detailed studies on disease's management practices had not been conducted Uganda. The objective this study was to establish effect purple disease production. Kabale, Kasese, and Mbale were identified as major onion-growing regions. Five fa...

Bulb onion ( Allium cepa L.) is an economically valuable vegetable crop in the United States. Onion production threatened by thrips, which are vector for Iris yellow spot virus , causal agent of (IYS). New Mexico State University (NMSU) breeding lines 12-236, 12-238, 12-243, and 12-337 have exhibited fewer IYS disease symptoms field; however, little known about effects on photosynthesis rate (P...