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68.37.29

Bảo vệ thực vật

Trần Thị Xuân Phương; Trần Đăng Hòa; Trần Đăng Hòa(1)

Hiệu quả của dịch chiết lá cây đậu dầu (Pongamia pinnata L.) đối với sâu cuốn lá nhỏ hại lúa (Cnaphalocrosis medinalis Guennee) tại tỉnh Thừa Thiên Huế

Field efficacy of the extract from pongam leaf (Pongamia pinnata L) for control of rice leaf rolder (Cnaphalocrosis medinalis Guennee) in Thua Thien Hue province, Vietnam

Bảo vệ thực vật

2015

3

25-29

2354-0710

Sâu cuốn lá nhỏ; Dịch chiết cây đậu dầu; Hiệu lực; Nghiên cứu; Pongamia pinnata; Cnaphalocrosis medinalis

Field experiments were conducted in order to evaluate the efficacy of the extract of pongam leaves (Pongamia pinnata L.) in the concentration of 0.4 percent and 0.5 percent for controling rice leaf rolder (Cnaphalocrosis medinalis Guennee) on BT7 rice variety in Thua Thien Hue province, Vietnam. The results shown that the extract with concentration of 0,5 percent were high efficacy against rice leaf folder. The efficacy was highest (60.64 - 69.64 percent) at three days after treatment and there were non significant difference with those of chemical insecticides as Virtako 40WG and Tungcydan 55EC. Application of the extract did not impact on the growth and development of rice, but increased the yield. As results, the extract should be used to control rice leaf folder as botanical insecticide in a safe rice production system.

TTKHCNQG, CVv 64