Incidence of the yellow stem borer (YSB) on deep water rice in the Mekong delta, Viet Nam
1986
Nguyen Van Huyah | Nguyen Ngoc Pho | Nguyen Trung Truc (University of Can Tho, Hau Giang, SR. (Viet Nam))
In 1983, YSB [yellow stem borer] Scirpophaga incertulas damage as whiteheads was recorded at five sites in Mekong delta [Vietnam] at different depths of floodwater. There was no significant difference in whiteheads among various water depths and whitehead incidence was quite low. In 1984, whitehead damage on the 3 most popular varieties in Chou Phu was similar, about 5 % whiteheads, with no significant difference among varieties. However, infestation found by dissection of 50 plants randomly collected for each variety at flowering, hard dough, and fully riped stages were much higher: 30-44%.
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