Safety Of Cruiser And Its Effect On Maize Pest

Corn is the main crop cultivation, in recent years, with corn cultivation area expands, continuous increase, coupled with the variety of factors, corn diseases and insect pests occurrence progressive, the serious influence maize yield, has become a limit is one of the important factors corn production. In the process of the cultivation of corn, seed sowing and common cause of soil spread and preach, pest spread diseases occurrence and popular. At present, the corn seedling diseases and pests prevention and control of the most economical, the most effective method is to use seed coating. Seed coating a certain intensity and permeability of the protective layer of film the pesticide Seed coating, significant kill underground pest, prevention or cure diseases, and promote seedlings growth, which can improve seed germination rate, reduce seed usage, increase production.Our country region is vast, corn regional climate and the ecological conditions, and very different in the production practice some corn after use, often appear seed coating emergence reduces, corn produce phytotoxicity etc. Phenomenon, directly affects the seed coating application effects. This research work with new pesticides thiamethoxam act as main insecticidal ingredient developed a Ruisheng for the field of corn seed coating, different Ruisheng seed coating dose formula selection was conducted, and the safety of the corn and the influence of maize growth. In addition, but also to Ruisheng seed coating can control plant diseases and insect pests prevention and cure effect is evaluated for Ruisheng in the cornfield seed coating provide basis for reasonable use.This test total select five Ruisheng, and contrast seed coating formula compared the potion. Experiments displayed that seed coating formula is safe, in corn production no phytotoxicity production. Experimental results show that different Ruisheng doses of seed coating processed compared with control, corn root number, plant fresh weight and root weight and plant height increases, promote the growth of the corn. In order to clear the different formulations of corn growth of corn, the influence of height and stem diameter of plants were investigated. In addition to stem diameter performance increase, height of plants were did not change significantly, this shows that although the seed coating processing in corn can promote the maize plant growth, but later on the birth of maize plant growth influenced smaller. The results show that Ruisheng seed coating can obviously increase the corn seedling emergence, promote the growth, increasing effect is remarkable. From the viewpoint of economic, safe and effect consideration, the production should application formula 4.In order to further study for safety of the Ruisheng seed coating, continuous observation in the fields of corn seedling growth situation, can be found in different doses Ruisheng seed coating processing conditions, the some of corn seedling organization does not cause harm, plant showed no display phytotoxicity deformity or spots symptoms, did not see the have acute or chronic phytotoxicity produce the same growth compared the blank control. And five different doses Ruisheng seed coating processing is safety, maize growth can not observe phytotoxicity occurrence. Ruisheng seed coating compared controlled zone has greatly enhanced, four treatment area seed coating formula, achieve maximum yield significantly higher than controls 12.3%.Test corn field area is mainly underground pest, such as white grub and wireworm. The result indicated that the field control effects of the Ruisheng seed coating were quite remarkable. Seed coating formula works best, reach 79.2%.Experiment with different for seed treatment of corn Sphacelotheca Reiliana, the control effect of 76%～93%, Ruisheng seed coating formula achieve the best 93.42%. Corn rough dwarf disease also influence maize yield, which is one of the important diseases, corn rough dwarf disease is not serious in tested field, morbidity occurred only 4.13%. Compared with blank control, the effect is not ideal for control of the corn rough dwarf disease. The control effect only reach 56.4% for Ruisheng seed coating.