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| 2.5% of high chloride, Su WP against diamondback moth effect
-01-20 Remaining Ai-Ping: Female, 35 years old, lecturer emulsion on the diamondback moth control effects were 48.40%, 71.10%, 80.74% and 71.10%, 85.32%, 81. 84% (Table 2). 34 Agricultural Sciences HUBEIAGRICUITURAISCIENCESNo. 3,2001 Bt, NPV biological agents Preliminary Report on bollworm control study Guimei Wang Haiyun Zhou Wenhua Li Feng moth (Hubei Province, People's Great Dyke Farm Jianli 433321 Plant Protection Station) Abstract thousand wins, toad king, Br, recombinant NPV, wild-type NPV The results showed that the drug education, these 5 had no ovicidal effect of preparations, but the cotton bollworm larvae. Particularly good effect against newly hatched larvae. Bc control effect of which the best control efficiency of 94.7%. Keywords BtNPV biological pesticide against cotton bollworm bio-pesticides have on humans and animals to teach safety, protection of natural enemies, improving the ecological environment. And pest resistance and so easy. In my field the majority of farmers have been gradually recognized, and have begun to use. The wider the current application site of several nuclear polyhedrosis virus (NPV), Bt agent in the field experiment, to explore its control effect on cotton bollworm, provide the basis for the field promotion. 1 Materials and methods and the amount of 11 trials of pharmaceutical recombinant NPV SC (Wuhan Institute of Virology, Chinese Academy of Development) the amount per hectare 150m1. Wild-type NPV SC (Wuhan Institute of Virology, Chinese Academy of Development) the amount per hectare 180ml,mbt shoes sale, Bt SC (Wuhan Institute of Virology,ugg boots, Chinese Academy of production) per hectare consumption 2250ml, thousands of wins powder (Wuhan Kono company, the content of 16000lU) each hectares the amount of 1500g, toad king powder (Henan Yu City of biological pesticides plant, NPV content of l0 billion PIB / g) per hectare 450g. 1.2 Test methods Test to agricultural centers in the field of eight teams cotton fields, the use of large area method. Each agent is a treatment, each treatment 333.3m2. Sprayer application methods using conventional spraying method. The dosage of each treatment area on the water l5kg. Efficacy observation: after drug 2h, the treatment area field larval marker to observe and record the field survival. Because at this time to 4th instar larvae dominated the field, it also marked the 4th instar larvae dominated. In addition. Collected randomly from each treatment area 40 bollworm eggs, egg-packing each piece of a tube. On the indoor hatching and survival of newly hatched larvae observed. Received :2001-01-08 study Guimei: Female, 30 years old, agronomists 2 Results and analysis of 21 larvae in field control effect of Table l The results showed that cotton bollworm 5 agents on the field have good control effect. After drug 1d. Thousand wins, toad king control effects were 22.2%, 40.0%, other 3 almost no control effect. After the drug 3d, Bt best, 71.4% of control effect, thousands of wins, followed by toad king. Control efficacy were 66.7%, 60.0%, recombinant, wild-type NPV bit weak, control effects were 57.1%,uggs nederland, 55.6%. L5 wrapped biological agents on the fields and cotton bollworm control efficacy of dry winning 36822.22466.7 management standard CD frog king 30l240.01860.0 recombinant wild-type NPV363832055.6 NPV28001657.1 Students:: silk!: 122 field collected Egg Table 2 indoor observation results show that. 5 kinds of preparations had no ovicidal effect. Observed after treatment of eggs taken back to the room, in addition to all but hatch into larvae parasitized. Handling area, thousands of wins 100% of hatching eggs, Bt handling area, hatchability 90,5%, 9.5% parasitism,www.uggbootst.com, and so were several other treatment, illustrating that agents did not kill the eggs of 5 results. However, preparations of 5 newly hatched larvae of a good control effect, in which newly hatched larvae of Bt on the best control effect for 94,7%. Recombinant NPV, wild-type NPV, thousands win control effects were 89.5%, 88.2%, 87,5%. Toad king somewhat less, anti-education was 78.9%. 3 discuss 1) The results showed that: Bt and NPV of the 5 preparations taken by Duncan's new multiple differential method for statistical analysis, the. 2.5% of use per hectare of high chloride - Su WP 600 ~ 750g, 7d after spraying the effect of diamondback moth control was significantly better than the control Bt WP 160001U/mg Pharmacy and 4.5% high cyanide cyanide emulsion efficacy. 3 Discussion The results showed that. 2.5% of high chloride, Su WP has a good control of diamondback moth effect, the use of poisoning to humans and animals not found in the phenomenon, the phenomenon of cabbage without injury. Recommended dose to 450 ~ 750g/hm2 appropriate, proper spraying of young larvae of the diamondback moth 相关的主题文章： ugg boots On the courtyard garden _139 ghd australia Banach space, improved Newton method mbt shoes clearance Dancer in the Dark _1526 |
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