Researching affects of crop seasons on growth and development of food coloring plants in Bac Kan province
2014
Ha Huy Hoang; Luong Van Dy; Truong Thi Anh Tuyet; Nguyen Viet Hung, Hoang Thi Bich Thao, Luu Thi Xuyen, La Thu Phuong, Luan Thi Dep
The results of the measures to be tested showed that: (1) The physical measure: To dig and destroy termite net, after 20 days the index of average length and width of damage trace of the treatment was 36 cm and 25 cm less than control. To use bait of sugarcane bagasse: number of worker termites was 3-times higher than control, average 465.5 ones per trap in other hand the index of length and width of damage trace 0.10 less than. (2) Sylviculture technique system: the damage trace index of treatment was 2-time less than control, the increase of average length and width of damage lower as well (treatment: 0.94 and 0.49 cm, control: 1,68 and 1.21 cm. (3) Pesticide: after 20 days to treat the increase of length and width of damage trace of all treatment were less than control (the PMC90): 0.46 and 0.41 cm, Lenfos 50EC: 0.30 and 0.25 cm. All of the testing measures were effective to control termite in the forests.
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