Скачать с ютуб Bacterial Panicle Blight| DirtyPanicle| WhiteHeads| Rice Bug| Stem Borer| Black Bug| How 2 Identify в хорошем качестве

Bacterial Panicle Blight| DirtyPanicle| WhiteHeads| Rice Bug| Stem Borer| Black Bug| How 2 Identify

Bacterial panicle blight can survive as a surface non pathogenic population on rice leaves and sheaths. These bacterial colonies can spread upwards as the plant grows. Bacteria infect the developing grains at flowering and cause grain abortion or rotting during grain filling after pollination. rice planted earlier in the spring tends to have less damage from bacterial panicle blight because of cooler temperatures at heading and grain filling. High nitrogen rates also should be avoided. Since the bacteria are seed-borne, rice crops planted with infested seed can suffer severe losses. Bacterial blight is caused by Xanthomonas oryzaepv. oryzae (Xoo) and affects the rice plant at the seedling stage where infected leaves turn grayish green and roll up. As the disease progresses, leaves turn yellow to straw-colored and wilt, leading whole seedlings to dry up and die.