Evaluation of the field effect of chlorothiazide on the control of four generations of brown planthopper
Zhang Xilin Zhou Yu Cao Erling
Tongzhou Agricultural Science Institute, Jiangsu Province
10% chlorothiazide WP is a new type of nicotine insecticide developed by Nantong Jiangshan Pesticide Chemical Co., Ltd. in Jiangsu Province. It has broad-spectrum, high-efficiency, low toxicity, low residue, and pests are not easy to produce resistance. Animals, plants and natural enemies are safe, and have multiple effects such as contact, stomach poisoning and systemic absorption. In order to verify the control effect of chlorothiazide on rice planthopper and its application technology, we were entrusted by Nantong Jiangshan Pesticide Chemical Co., Ltd., and we carried out chlorothiazide prevention and control in the rice field of Tongzhou Agricultural Science Institute in September 2005. The field efficacy test of the brown planthopper in the field has achieved satisfactory control effects. The test results are summarized as follows:
1 Materials and methods
1.1 Test agent 10% chlorothiazide WP (produced by Jiangsu Nantong Jiangshan Pesticide Chemical Co., Ltd.), 10% green (Imidacloprid) WP (produced by Jiangsu Suhua Group Co., Ltd.), 25% chlorpyrifos (thiophene) Oxazinone) WP (produced by Jiangsu Changnong Chemical Co., Ltd.), 5% Ruijinte SC (manufactured by Bayer, Germany), 25% 虱 虱 净 1 (Imidacloprid + isoprocarb) WP (produced by Zhejiang Wenzhou Longwan Pesticide Factory) .
1.2 Treatment and method test: For each 666.7m2, use chlorothiazine 20g, 30g, 40g, 30g of absolute sputum, 30g of imidacloprid, 50g of chlorpyrifos, 30ml of rutin, no drug control, a total of 8 treatments Repeated 4 times, randomly arranged, the area of ​​the plot is 33.3 m2, and the water is uniformly sprayed to 75 kg of water. After the application, the water layer is maintained in the field. The application date is September 21, sunny day, wind 2-6, and the growth period of rice planthopper is the peak period of the third and fourth instar nymphs (including the first-instar nymphs accounting for 8.7%, the second-instar nymphs accounting for 16.35%, the third-instar nymphs). It accounted for 34.68%, the fourth-instar nymphs accounted for 21.45%, and the fifth-instar nymphs and adults accounted for 19.82%. The rice variety to be tested was Tongyujing No. 1, and the cultivation type was direct seed rice.
1. 3 investigation and record
The prevalence of rice planthoppers was investigated before the drug, and the amount of insects in the rice planthoppers in each treatment plot was investigated 3, 7, 10, and 14 days after the drug. 25 pots per pot were investigated in each plot, and 2 pots per pot were used to calculate the control effect. Results Statistical analysis was performed to compare the differences in control efficacy of each agent treatment. Meanwhile, low rainfall after 7 days drug, wherein the drug after 3 days, 5 days there is rain, the cumulative rainfall 10-15 mm, less control effect of the agent from rain.
2 Results and analysis
2.1 Control effect of different agents such as chlorothiazide From the results of the third phase investigation, it can be seen that chlorothiazide has better quick-acting effect on rice planthopper and obvious control effect. 3 days after treatment, with each 666.7m2 Imidaclothiz 30g ~ 40g planthopper efficacy was 56.02-66.78%, more than 52.09% imidacloprid higher control effect 3.93-14.69 percent, wherein the anti-process 40g Imidaclothiz effect significantly higher than that treated with imidacloprid; buprofezin with similar control effect 58.82%, close to the absolute net lice control effect 65.20%, fipronil control effect 67.43%. 7 days after treatment, imidaclothiz increased control efficiency, Imidaclothiz 30g ~ 40g of planthopper efficacy was 66.13-68.55%, 1.77-10.11 percent increase to 3 days after anti-drug efficacy, than imidacloprid 62.05% higher control effect 4.08-6.5 percent, no significant difference; 11.92-14.34 higher than the percentage of control efficiency buprofezin, no significant difference; 72.16%, but the net effect of the anti-lice lower than the absolute percentage points 3.61-6.03 The difference is not significant; it is 10.27-12.6% lower than the resistance of 78.82% of Ruijinte, and the treatment effect of chlorothiazide 30g is significantly lower than that of Ruijinte. 10 days after the drug, the control effect of chlorothiazide was further improved, and its control effect reached 72.05-75.17%, which was 8.88-12% higher than that of imidacloprid 68.17%, and the difference was significant; it was higher than the anti-effect of 56.36%. 14.69-17.80 percentage points, the difference is significant; similar to the absolute net effect of 73.79%, Rui Jinte's control effect of 79.35%, the difference is not significant. It can be seen that chlorothiazide is an ideal agent for controlling rice planthoppers. It is worthy of popularization and application in rice. It can be used in combination with imidacloprid, chlorpyrifos and ruthenium to control rice pests such as rice planthopper.
2.2 Comparison of the effects of different doses of chlorothiazide From the control effect of different doses of chlorothiazide 10 days after the drug, the control effect increased with the increase of the dose, chlorothiazide 20g, 30g, 40g control effect were 52.78%, 72.05%, 75.17%, of which the maximum control effect imidaclothiz 40g treatment, higher than imidaclothiz 20g processing 22.39 percent, the difference was significant; higher than imidaclothiz 30g processing 3.12 The percentage difference was not significant; the control effect of chlorothiazine 30g treatment was 19.27 percentage points higher than that of chlorothiazide 20g treatment, and the difference was also significant. The same trend was observed for the control effects 3 and 7 days after the drug. It can be seen that the cost of chlorothiazide for controlling rice planthoppers is 30 g.
Table 1 Field effect of chlorothiazide against rice planthopper
Treatment Pre-dose base (head / 50 points) 3 days after drug control (%)
(Amount / 667m2) I II III IV I II III IV Mean Difference
Chloromorpholine 20g 995 810 1150 1120 53.14 15.21 52.94 37.99 39.82 cB
Chloromorpholine 30g 1054 1013 2120 1870 64.43 22.57 69.82 67.23 56.02 abAB
Chlorothiophene 40g 1370 1058 1720 1770 75.01 45.76 67.10 79.23 66.78 aA
30 30 g 980 1580 2250 1250 59.08 57.93 77.11 66.67 65.20 aA
Imidacloprid 30 g 1580 1340 1510 1600 51.89 37.17 57.10 62.21 52.09 bB
æ‰‘è™±çµ 50 g 1399 1015 1650 1240 66.91 36.70 65.41 66.26 58.82 bB
Regent 30ml 1075 1550 1990 1920 62.85 56.83 72.18 77.83 67.43 aA
Drug-free control 1940 2210 1800 1920 2380 1995 2195 2350 2230
Table 2 Field trial results of chlorothiazide against rice planthopper
Control effect 7 days after treatment (%) 10 days after treatment (%)
(Amount/667m2) I II III IV Mean difference I II III IV Mean difference
Chloromorpholine 20g 45.71 21.05 60.72 35.42 40.73cC 52.02 32.62 63.76 62.72 52.78bB
Chloromorpholine 30g 59.58 58.65 81.58 70.70 66.13bAB 69.50 60.16 83.47 75.08 72.05aAB
Chloromorph 40g 70.01 47.47 85.19 71.52 68.55abAB 72.21 64.18 85.78 78.52 75.12aAB
30 30g 70.50 65.60 88.45 64.09 72.16 abAB 71.63 72.95 85.77 64.81 73.79aAB
Imidacloprid 30g 65.99 51.58 67.61 63.01 62.05bB 64.93 59.96 63.20 64.58 63.17bB
è™±çµçµ50g 62.80 34.21 67.89 51.92 54.21bBC 65.01 43.58 69.25 51.59 57.36bB
Sharpen 30ml 74.52 75.97 86.48 78.29 78.82aA 79.54 72.72 82.09 83.06 79.35aA
Drug-free control 5100 4700 5300 4380 4870 6420 5750 5960 5150 5820
3 Summary and discussion
3.1 Chlorothiazide The control of rice planthoppers has a quick effect and obvious effect. After 3 days of drug treatment, the control effect can reach 60-70%, and the control effect after 7-10 days after drug is about 75%, which is similar to that of Ruijinte and Wanjing, which is obviously superior to imidacloprid and chlorpyrifos. Control effect. In order to effectively control the occurrence of rice planthopper, the economical and effective dosage of chlorothiazide for controlling rice planthopper is 30g.
3.2 From the results of this year's test, the effect of chlorothiazide against rice planthopper is not particularly significant, and imidacloprid and chlorpyrifos have the same trend. The reason may be analyzed, which may be related to the age of the rice planthopper in the field. If it can be mastered at the peak of 1-2 nymphs, it can be speculated that its control effect will be better, which will be further tested next year.
3.3 The test results show that the chlorothiazide control of rice planthopper can last for more than 10 days. Due to the high amount of insects in the field, it can only be controlled in time. How long does it last? clear. In particular, in the case of the occurrence of rice planthopper, the chlorothiazide control of rice planthopper should be considered for 2 times, that is, after the first drug application, about 10 days, the second drug is administered to ensure that the chlorothiazide is on the rice planthopper. Control effect.
Distribution service: Henan Jinguang Agricultural Technology Co., Ltd. Hotline 13903839098
Zhang Xilin Zhou Yu Cao Erling
Tongzhou Agricultural Science Institute, Jiangsu Province
10% chlorothiazide WP is a new type of nicotine insecticide developed by Nantong Jiangshan Pesticide Chemical Co., Ltd. in Jiangsu Province. It has broad-spectrum, high-efficiency, low toxicity, low residue, and pests are not easy to produce resistance. Animals, plants and natural enemies are safe, and have multiple effects such as contact, stomach poisoning and systemic absorption. In order to verify the control effect of chlorothiazide on rice planthopper and its application technology, we were entrusted by Nantong Jiangshan Pesticide Chemical Co., Ltd., and we carried out chlorothiazide prevention and control in the rice field of Tongzhou Agricultural Science Institute in September 2005. The field efficacy test of the brown planthopper in the field has achieved satisfactory control effects. The test results are summarized as follows:
1 Materials and methods
1.1 Test agent 10% chlorothiazide WP (produced by Jiangsu Nantong Jiangshan Pesticide Chemical Co., Ltd.), 10% green (Imidacloprid) WP (produced by Jiangsu Suhua Group Co., Ltd.), 25% chlorpyrifos (thiophene) Oxazinone) WP (produced by Jiangsu Changnong Chemical Co., Ltd.), 5% Ruijinte SC (manufactured by Bayer, Germany), 25% 虱 虱 净 1 (Imidacloprid + isoprocarb) WP (produced by Zhejiang Wenzhou Longwan Pesticide Factory) .
1.2 Treatment and method test: For each 666.7m2, use chlorothiazine 20g, 30g, 40g, 30g of absolute sputum, 30g of imidacloprid, 50g of chlorpyrifos, 30ml of rutin, no drug control, a total of 8 treatments Repeated 4 times, randomly arranged, the area of ​​the plot is 33.3 m2, and the water is uniformly sprayed to 75 kg of water. After the application, the water layer is maintained in the field. The application date is September 21, sunny day, wind 2-6, and the growth period of rice planthopper is the peak period of the third and fourth instar nymphs (including the first-instar nymphs accounting for 8.7%, the second-instar nymphs accounting for 16.35%, the third-instar nymphs). It accounted for 34.68%, the fourth-instar nymphs accounted for 21.45%, and the fifth-instar nymphs and adults accounted for 19.82%. The rice variety to be tested was Tongyujing No. 1, and the cultivation type was direct seed rice.
1. 3 investigation and record
The prevalence of rice planthoppers was investigated before the drug, and the amount of insects in the rice planthoppers in each treatment plot was investigated 3, 7, 10, and 14 days after the drug. 25 pots per pot were investigated in each plot, and 2 pots per pot were used to calculate the control effect. Results Statistical analysis was performed to compare the differences in control efficacy of each agent treatment. Meanwhile, low rainfall after 7 days drug, wherein the drug after 3 days, 5 days there is rain, the cumulative rainfall 10-15 mm, less control effect of the agent from rain.
2 Results and analysis
2.1 Control effect of different agents such as chlorothiazide From the results of the third phase investigation, it can be seen that chlorothiazide has better quick-acting effect on rice planthopper and obvious control effect. 3 days after treatment, with each 666.7m2 Imidaclothiz 30g ~ 40g planthopper efficacy was 56.02-66.78%, more than 52.09% imidacloprid higher control effect 3.93-14.69 percent, wherein the anti-process 40g Imidaclothiz effect significantly higher than that treated with imidacloprid; buprofezin with similar control effect 58.82%, close to the absolute net lice control effect 65.20%, fipronil control effect 67.43%. 7 days after treatment, imidaclothiz increased control efficiency, Imidaclothiz 30g ~ 40g of planthopper efficacy was 66.13-68.55%, 1.77-10.11 percent increase to 3 days after anti-drug efficacy, than imidacloprid 62.05% higher control effect 4.08-6.5 percent, no significant difference; 11.92-14.34 higher than the percentage of control efficiency buprofezin, no significant difference; 72.16%, but the net effect of the anti-lice lower than the absolute percentage points 3.61-6.03 The difference is not significant; it is 10.27-12.6% lower than the resistance of 78.82% of Ruijinte, and the treatment effect of chlorothiazide 30g is significantly lower than that of Ruijinte. 10 days after the drug, the control effect of chlorothiazide was further improved, and its control effect reached 72.05-75.17%, which was 8.88-12% higher than that of imidacloprid 68.17%, and the difference was significant; it was higher than the anti-effect of 56.36%. 14.69-17.80 percentage points, the difference is significant; similar to the absolute net effect of 73.79%, Rui Jinte's control effect of 79.35%, the difference is not significant. It can be seen that chlorothiazide is an ideal agent for controlling rice planthoppers. It is worthy of popularization and application in rice. It can be used in combination with imidacloprid, chlorpyrifos and ruthenium to control rice pests such as rice planthopper.
2.2 Comparison of the effects of different doses of chlorothiazide From the control effect of different doses of chlorothiazide 10 days after the drug, the control effect increased with the increase of the dose, chlorothiazide 20g, 30g, 40g control effect were 52.78%, 72.05%, 75.17%, of which the maximum control effect imidaclothiz 40g treatment, higher than imidaclothiz 20g processing 22.39 percent, the difference was significant; higher than imidaclothiz 30g processing 3.12 The percentage difference was not significant; the control effect of chlorothiazine 30g treatment was 19.27 percentage points higher than that of chlorothiazide 20g treatment, and the difference was also significant. The same trend was observed for the control effects 3 and 7 days after the drug. It can be seen that the cost of chlorothiazide for controlling rice planthoppers is 30 g.
Table 1 Field effect of chlorothiazide against rice planthopper
Treatment Pre-dose base (head / 50 points) 3 days after drug control (%)
(Amount / 667m2) I II III IV I II III IV Mean Difference
Chloromorpholine 20g 995 810 1150 1120 53.14 15.21 52.94 37.99 39.82 cB
Chloromorpholine 30g 1054 1013 2120 1870 64.43 22.57 69.82 67.23 56.02 abAB
Chlorothiophene 40g 1370 1058 1720 1770 75.01 45.76 67.10 79.23 66.78 aA
30 30 g 980 1580 2250 1250 59.08 57.93 77.11 66.67 65.20 aA
Imidacloprid 30 g 1580 1340 1510 1600 51.89 37.17 57.10 62.21 52.09 bB
æ‰‘è™±çµ 50 g 1399 1015 1650 1240 66.91 36.70 65.41 66.26 58.82 bB
Regent 30ml 1075 1550 1990 1920 62.85 56.83 72.18 77.83 67.43 aA
Drug-free control 1940 2210 1800 1920 2380 1995 2195 2350 2230
Table 2 Field trial results of chlorothiazide against rice planthopper
Control effect 7 days after treatment (%) 10 days after treatment (%)
(Amount/667m2) I II III IV Mean difference I II III IV Mean difference
Chloromorpholine 20g 45.71 21.05 60.72 35.42 40.73cC 52.02 32.62 63.76 62.72 52.78bB
Chloromorpholine 30g 59.58 58.65 81.58 70.70 66.13bAB 69.50 60.16 83.47 75.08 72.05aAB
Chloromorph 40g 70.01 47.47 85.19 71.52 68.55abAB 72.21 64.18 85.78 78.52 75.12aAB
30 30g 70.50 65.60 88.45 64.09 72.16 abAB 71.63 72.95 85.77 64.81 73.79aAB
Imidacloprid 30g 65.99 51.58 67.61 63.01 62.05bB 64.93 59.96 63.20 64.58 63.17bB
è™±çµçµ50g 62.80 34.21 67.89 51.92 54.21bBC 65.01 43.58 69.25 51.59 57.36bB
Sharpen 30ml 74.52 75.97 86.48 78.29 78.82aA 79.54 72.72 82.09 83.06 79.35aA
Drug-free control 5100 4700 5300 4380 4870 6420 5750 5960 5150 5820
3 Summary and discussion
3.1 Chlorothiazide The control of rice planthoppers has a quick effect and obvious effect. After 3 days of drug treatment, the control effect can reach 60-70%, and the control effect after 7-10 days after drug is about 75%, which is similar to that of Ruijinte and Wanjing, which is obviously superior to imidacloprid and chlorpyrifos. Control effect. In order to effectively control the occurrence of rice planthopper, the economical and effective dosage of chlorothiazide for controlling rice planthopper is 30g.
3.2 From the results of this year's test, the effect of chlorothiazide against rice planthopper is not particularly significant, and imidacloprid and chlorpyrifos have the same trend. The reason may be analyzed, which may be related to the age of the rice planthopper in the field. If it can be mastered at the peak of 1-2 nymphs, it can be speculated that its control effect will be better, which will be further tested next year.
3.3 The test results show that the chlorothiazide control of rice planthopper can last for more than 10 days. Due to the high amount of insects in the field, it can only be controlled in time. How long does it last? clear. In particular, in the case of the occurrence of rice planthopper, the chlorothiazide control of rice planthopper should be considered for 2 times, that is, after the first drug application, about 10 days, the second drug is administered to ensure that the chlorothiazide is on the rice planthopper. Control effect.
Distribution service: Henan Jinguang Agricultural Technology Co., Ltd. Hotline 13903839098
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