[ Objective] The paper was to explore the field efficacy of 22% fipronil FS against sugarcane stem borer and thrips （Baliothrips serratus Kobus ）. [ Method] The field trial was conducted by foliar spraying of 22% fi...[ Objective] The paper was to explore the field efficacy of 22% fipronil FS against sugarcane stem borer and thrips （Baliothrips serratus Kobus ）. [ Method] The field trial was conducted by foliar spraying of 22% fipronil FS and mixed broadcasting with fertilizer in 2014. [ Result ] Foliar spraying of 22% fipronil FS at the dose of 50 mIV667 m~ had the best control effect against sugarcane stem borer, and the control effect at 90 d post administration was 70.70%, significantly higher than that of control agent （61.86%）. Medium and high dose of 22% fipronil FS had better control effects against sugarcane thrips. [ Conclusion ] Considering control effects against sugarcane stem borers and thrips as well as sugarcane yield, it is recommended that 22% fipronil FS is sprayed at medium concentration （50 mL/667 m2 ）.展开更多
To figure out major diseases and insect pests of sugarcane and sugarcane resistance to diseases,the occurrence of major diseases and insect pests on 11 main sugarcane varieties in eight sugarcane producing areas of Gu...To figure out major diseases and insect pests of sugarcane and sugarcane resistance to diseases,the occurrence of major diseases and insect pests on 11 main sugarcane varieties in eight sugarcane producing areas of Guangxi was investigated during the medium-term growth period of sugarcane in 2015,and field resistance to smut and mosaic diseases was evaluated. The results showed that the dead heart rate（ DHR） ranged from 0. 00% to 38. 55%; new-planting sugarcane of Guiliu 2 and ratoon sugarcane of Liucheng 05-136 suffered the most severe damage in Beihai city,and the DHR were 38. 55% and 37. 66%,respectively. The incidence rate of smut disease ranged from 0. 00% to 24. 89%. Ratoon sugarcane was more susceptible to smut than new-planting sugarcane among all investigated varieties. Variety ROC22 was most susceptible to smut,and performed moderate susceptibility. Guiliu 2 was the second susceptible and performed resistance,with the incidence rate of 7. 45%. The rest nine varieties had high resistance. Sugarcane mosaic disease occurred mildly in Guangxi,and the incidence rate ranged from 0. 39% to 7. 73%. ROC22,Guitang 42 and Guiliu 2 expressed moderate resistance and the rests exhibited resistance. Sugarcane in Nanning and Beihai suffered more severe damage than those in other producing areas. The field evaluation system of sugarcane resistance to borers was expected to be constructed. ROC22 was most susceptible to smut,compared with other main varieties. Mosaic diseases occurred lightly in Guangxi. Multi-location and multi-year observation are necessary for accurate evaluation of sugarcane resistance to smut and mosaic diseases.展开更多
基金Supported by Special Project for Construction of China Agricultural Industry Research System(CARS-20-2-3)Special Fund for Agro-scientific Research in the Public Interest(200903004-41)Key Science and Technology Project of Agriculture in Guangxi Province(201414)
文摘[ Objective] The paper was to explore the field efficacy of 22% fipronil FS against sugarcane stem borer and thrips （Baliothrips serratus Kobus ）. [ Method] The field trial was conducted by foliar spraying of 22% fipronil FS and mixed broadcasting with fertilizer in 2014. [ Result ] Foliar spraying of 22% fipronil FS at the dose of 50 mIV667 m~ had the best control effect against sugarcane stem borer, and the control effect at 90 d post administration was 70.70%, significantly higher than that of control agent （61.86%）. Medium and high dose of 22% fipronil FS had better control effects against sugarcane thrips. [ Conclusion ] Considering control effects against sugarcane stem borers and thrips as well as sugarcane yield, it is recommended that 22% fipronil FS is sprayed at medium concentration （50 mL/667 m2 ）.
基金Supported by Special Fund of China Agricultural Industry Research System(CARS-20-2-3)Natural Science Foundation of Guangxi Province(2013GXNSFBA019068)+2 种基金Key Project for Science and Technology Development of Guangxi Academy of Agricultural Sciences(GNK 2013JZ12)Basic Research Fund of Guangxi Academy of Agricultural Sciences(2015JM03)Doctoral Scientific Research Foundation of Guangxi Academy of Agricultural Sciences
文摘To figure out major diseases and insect pests of sugarcane and sugarcane resistance to diseases,the occurrence of major diseases and insect pests on 11 main sugarcane varieties in eight sugarcane producing areas of Guangxi was investigated during the medium-term growth period of sugarcane in 2015,and field resistance to smut and mosaic diseases was evaluated. The results showed that the dead heart rate（ DHR） ranged from 0. 00% to 38. 55%; new-planting sugarcane of Guiliu 2 and ratoon sugarcane of Liucheng 05-136 suffered the most severe damage in Beihai city,and the DHR were 38. 55% and 37. 66%,respectively. The incidence rate of smut disease ranged from 0. 00% to 24. 89%. Ratoon sugarcane was more susceptible to smut than new-planting sugarcane among all investigated varieties. Variety ROC22 was most susceptible to smut,and performed moderate susceptibility. Guiliu 2 was the second susceptible and performed resistance,with the incidence rate of 7. 45%. The rest nine varieties had high resistance. Sugarcane mosaic disease occurred mildly in Guangxi,and the incidence rate ranged from 0. 39% to 7. 73%. ROC22,Guitang 42 and Guiliu 2 expressed moderate resistance and the rests exhibited resistance. Sugarcane in Nanning and Beihai suffered more severe damage than those in other producing areas. The field evaluation system of sugarcane resistance to borers was expected to be constructed. ROC22 was most susceptible to smut,compared with other main varieties. Mosaic diseases occurred lightly in Guangxi. Multi-location and multi-year observation are necessary for accurate evaluation of sugarcane resistance to smut and mosaic diseases.
