Field Efficacy Test of Vegetable Pesticide Weilubao against Vegetable Pests

The vegetable production area in our city is large and there are many kinds of pests, and the occurrence of damage is serious. In order to prevent and control vegetable pests, vegetable farmers frequently use highly toxic chemical pesticides, plague natural natural enemies, destroy the ecological balance of D, increase the resistance of insect pests, and increase control costs. In particular, residues of pesticides in vegetables and vegetables directly harm people's health. . Therefore, to seek efficient, low-toxic or non-toxic, plant pesticides or biological pesticides for the principals of drug efficacy period to control vegetable pests, in order to reduce the environmental pollution caused by chemical pesticides, protect natural populations and reduce the development of pest resistance. It has become an important insider in the comprehensive management of pests in vegetables and vegetables. The Institute of Earth Biology of Hengyang City produced a new generation of non-environmentally hazardous plant pesticides, Victoria Lvbao (0.6% veratrine alcohol solution), which has a unique effect on Eolaphora pests. The Yangshi Plant Protection and Quarantine Station was commissioned by the provincial station to carry out trials and preventions of locusts, Liriomyza sativae, Trichosatilla rapae, and Brassica nicotianae in the subtropical vegetable and vegetable base from August 1997 to January. The control effect of this product provides scientific basis for large-scale promotion of village use.
First, test materials and methods
l. Wei Lvbao’s field trials for the control of Trichosoma falciparum and Liriomyza sativae in Huangzhou Village, Chashan Town, suburbs of the city. The experimental plot covers an area of ​​1.1 mu. The test crop is cucumber, 12-16 leaves, 8,000 per acre. Soil sandy loam, soil fertility uniform, the test set up four treatments, that is, one-dimensional Lubao solution, mu with 225 ml (400 times liquid); 2-dimensional Lubao solution, mu with 160 ml (600 times liquid); 82.5 % Kungfu EC, MU 45 ml (2000 times solution); 4 blank controls. The random block arrangement was repeated three times, and the total weight of the two communities was 68 square meters. On August 14th, 1997, in Gualou, the larvae of Liriomyza sativae were administrated once at the peak, and 90 kg per mu was sprayed. Before spraying, the number of live worms was investigated 3 days and 7 days after application, and the total number of investigations was 3 times. . Each site was surveyed with 10 clusters, 3 leaves were surveyed in each cluster, and were marked with red paint. A total of 30 clusters and 90 leaves were investigated for each treatment. The deceleration rate and calibration effectiveness of the population were calculated for 3 days and 7 days, respectively. A survey was conducted for significance tests. Meteorological conditions: Within seven days after application (including the day of application), the daily average temperature was 28.91°C, and the average daily relative humidity was 72.75%. Rainy days were 3. The total rainfall was 19.7 mm, and there was no rain for 36 hours after spraying.
2. Wei Lvbao's control efficacy against Brassica leucocephala was established in Jinlan Village, Songmu Township, a suburb of the city. The test plot has an area of ​​1.2 mu. The test crops are Chinese cabbage and 10 to 18 leaves. A total of four treatments are included. Lvbao solution, mu with 225 ml (400 times solution); 2 dimensional Lubao solution, mu with 150 ml (600 times solution); 81.8% Ji Qi Miao Ke EC, mu with 30 ml (3000 times solution) ;4 blank control. The randomized block arrangement was repeated three times for a total of 12 plots with an area of ​​66.67 square meters per plot. In September 15th, 1997, a single application was conducted during the peak period of 1-2 instar larvae of the cabbage moth, and 90 kilograms of spray liquid was used. Before spraying, the number of live worms was investigated on the 8th and 7th days after the application. Six plots were surveyed in each plot. Sixty-six plots were surveyed for each plot. Eight days and seven days were used to calculate the pest retreat rate and correction effectiveness. The significance of the last survey was tested. Meteorological conditions: Within 7 days after application, the daily average temperature was 18.6°C, and the daily average relative humidity was 85.86%. There were 6 rain days and a total rainfall of 43.3 mm.
3-dimensional control of cabbage aphid Emerald Field Trial test in six groups of suburban office progress Huang Sha Wan Village, an area of ​​623.3 square meters experimental field, the test crop is cabbage, 14-16 leaves per acre 1200 stump, Ã a total of five treatments: ① Emerald dimensional solution, mu 166.67 ml (600 times); ② Emerald dimensional solution, mu 126 ml (800 times); ③25% EC aphid blue ling, 83.33 mu ml "(1200 times); ④20% Comfort plurality concentrated soluble economy, mu 26.00 ml (4000 times); ⑤ blank control, using group randomized row F column, repeated three times, a total of 16 cells, each cell an area of ​​41 square meters, 1997 October 16 to cabbage aphid, Sheng period of application, application time, acres of spraying liquid 100 kg. investigation before spraying insect population base, day 1, three days after application, 7 Tianchao investigated the effects of prevention and control, and conducted a total of four investigations, taking random sampling, conducting a fixed survey of 8 per cell, checking each of 3 leaves with a rainbow paint, and examining 9 and 27 leaves for each treatment and calculating one day after the drug was administered. 3 days and 7 days of aphid survival rate and calibration control efficacy, and significant test of the results of the last survey. 7 days after treatment, the average temperature of 23.36 deg.] C, 81.29 daily average relative humidity, rain day 4, a total of 0.2 mm of rainfall, the administration within 24 hours without rain.
Second, test results and evaluation
1. The control effect of plant pesticides, Victorian Green Peach, on quail quails and Liriomyza sativae.
1 Dimensions of Lvbao's control effect against quails, after 3 days of application, 256 ml of Victoria Green Mu was used, and 160 ml of chloroplasts were used. The average corrected control effect on guaguan was “84.96%, 79.44%, 2.5% Kungfu With 46 ml of the average corrected control effect of 96.74%; 7 days after application, Wei Lvbao with 226 ml, the average correction of 160 ml emulates 92.41%, 81.37%, 2.5% Kungfu EC with 46 ml of average defense The effect was 97.19%, and the significance of the control effect was determined after 7 days of drug treatment. F=3.6 2D Lvbao's control effect against Liriomyza sativae Blanchard. 8 days after application, Weiluobao Mu with 225 ml, 160 In milliliters, the average corrected control efficacy against Liriomyza sativae was 71.70% and 67.74%, respectively, and the average corrected control effect of 2.5% Kungfu EC with 45 milliliters was 76.86%; after 7 days of application, Weimubao used 226 milliliters. , 160 ml, the average corrected control efficacy against Liriomyza sativae was respectively 72.51%, 70.02%, 2.6% KMP, with an average corrected control effect of 76.3%, and a 7-day correction effect against the drug. Significant determination was made, F=0.26 2. Plant pesticide Victorian Green had a good control effect against Brassica oleracea .
After 3 days of application, Weilubao has 225 ml, 150 ml, and the average correcting and controlling effect on Brassica oleracea is 82.84% and 89.80%, respectively. The average control effect of 1.8% Chizilla wolf cock EC is 30 ml. It was 16.41%; 7 days after application, the average use of 225 ml of Weilubao was mutatis mutandis. The average corrected control effect of 150 ml was 89.32% and 96.92%, respectively. The average control effect of 1.8% Jiqichongchun oil was 30 ml. 53.94%. Significant determinations were made on the 7-day correction effect of the drug, F=380>F0.01=18.0, indicating a very significant difference between the treatments. After multiple comparisons and analysis, Weilubao has used 600 times of liquid to control the efficacy of mu. The control effect of 400 times liquid increased by 6.6%, and the control effect of Weilvbaomu with 400 times liquid increased by 36.38% compared with the control effect of 1.8% Jiqichongjing grams of 8000 times liquid.
3, plant pesticides Wei Lubao control aphid effect is good, 800 times mu, after 1 days, 9 days, 7 days after the control effect was 99.10%, 99.09%, 98.11%; 800 times for the mu, after medicine The control effects of 1 day, 3 days and 7 days were 97.97%, 99.19%, and 98.66%, respectively. After the 7-day correction effect of the drug was converted by arcsine, the analysis of variance was performed again. F=2.94 Pesticide Weilvbao is an ideal agent for the control of quails, larvae, brassicae, and locusts in place of chemical pesticides. It is safe for humans, animals, and crops. The special effect period lasts about a week, which can effectively reduce the pollution of chemical pesticides to the environment and reduce The residual amount of toxic substances in agricultural and sideline products protects natural enemies from controlling harmful organisms and shows a good promotion prospect. It is recommended to use a 600-fold or 800-fold solution for production. During the larval stage of 1 to 2 years of age, the leaves should be sprayed on both sides of the leaves. After 7 days, it is necessary to spray the second dose depending on the change in the insect condition. In Levin, further expand the test and demonstration, and strive to promote the application as soon as possible.
Test leader: Gao Jialu (senior agronomist)
Tang Chunsheng (senior agronomist)
Jiang Maosheng (Agronomist)

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