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This paper discussed and summarized the parasitic characters and the protection and utilization of 7 species of dominant natural enemies of sugarcane pests in Yunnan, China. Sugarcane pests are numerous and there are rich natural enemy resources in Yunnan sugarcane areas. There are more than 283 species of natural enemies against sugarcane pests in Yunnan, among which the dominant natural enemies with protection and utilization value and research significance include Trichograrrurui, Apantdes flavipes (Cameron) and Stumuopsis inferem Townsend parasitic: on sugarcane borers, Synonycfm grandis (Thunberg) , Lemtlia biplagiata ( Swartz) , Chilornenes sexnmaculata ( Fabricius) and Thiallela sp catching and feeding on Ceralovacima hunger a Zehntner, and Euborellia pallipes Shiraki preying on Saccharicocus sacchari (Cocherell) , Dysmicoccus bohinsis Kuw, Trochorhopalus hurneralis Chevrolat and Diocalruulra sp. There is also one fungal parasite, namely Becuweria bassiana, which is widely distributed in nature, and can parasitize in a variety of sugarcane pests including sugarcane borers, Exoloniha ser-ruhila (Gyllenhal) , Alissonolum impressicolle Arrow, T. hurneralis and Otidognathus rubriceps Chevrola. It has a natural parasitism rate generally around 10% and certain natural inhibition effect on sugircane pests. Reasonably protecting and utilizing natural enemies and giving full play to the natural regulation of natural enemies on pests are of great significance for protecting the ecological environment, maintaining the ecological balance of sugarcane fields, improving the comprehensive management level of pests, and protnoting the sustainable development of sugir industry. [ABSTRACT FROM AUTHOR]

Sugarcane red rol caused by Colletotrichum falaitum Went is one of llie important fungal diseases causing significant losses to sugarcane production, commonly known as "cancer" of sugircane. It lias risen from a minor disease to a major disease, resulting in the death of sugarcane in Lineang, Menglian and Shi-ping sugarcane areas in Yunnan Province. Due to the frequent variation of lliis pathogen, it is difficult to control, the pesticide control effect is not ideal at present, and there is slill no elleclive and radical cure measures. The research on the variation of C. falaitum and sugarcane disease resistance is the only way to achieve the sustainable control of sugarcane disease. This paper mainly reviewed the genetic variation on the morphological, pathogenic and molecular variation of C. falcatum, and rapid molecular detection methods, and sugarcane disease resistance research in combination with the latest research al home and abroad. An outlook for further research on sugarcane red rol in the future was also given, to provide a theoretical basis for the research and control of sugarcane red rot in China. [ABSTRACT FROM AUTHOR]

Aimed al the difficult problem of prevention and control of disastrous sugircane borers in low latitude plateau of China, this research systematically overcame the botlleneck of comprehensive prevention and control of sugarcane bores after 10 years of collaIborative research, and formed a number of core product technologies, which promoted the green and high-quality development of the sugarcane industry and achieved llie following innovative results. In this study, the species, population structure and damage characteristics of disastrous sugarcane borers in low latitude plateau were clarified for the first time, which provided a scientific basis for the formulation of technology and application of comprehensive prevention and control. The monitoring technology system and early warning monitoring network were constructed for the monitoring of borer pojHilation in low latitude plateau sugarcane area, wliich realized the accurate monitoring of the population dynamics of sugan-ane bores and provided technical support for comprehensive prevention and control, the flight spraying technology by unmanned aerial vehicle ( UAV) was developed for bores in the low latitude plateau cane area, and ii has been successfull) applied in a large area, therein opening up a new way of light, simple and efficienl for effeclive conlrol of borers. The scale application of lain]) trapping and sexual attracting to kill adult insects technology promoted the advancement of green control technology of bores. Integration was made to the comprehensive control techniques like UAV flight control, biological agents, physical and chemical inducement and control, and sexual attractant trapping in the low latitude plateau sugarcane area, and standardized technical regulations have been formulated, which significantly improved the overall prevention and control effect of large areas. The technologies for the comprehensive prevention and control of sugarcane Infers have been popularized and applied in 8 major sugarcane producing states (cities) in low altitude plateau of Yunnan over llie years, which has controlled the damage and showed remarkable control effect. In 2017 -2018, the integrated conlrol technology was popularized and applied to a total of 2.78x105 hm2( 1.33x104 hm2 of LAV flight control) of area, which recovered a total of 3.666x106 t of sugarcrane losses, increasing 4. 69 x 10 t of sugar with the sales increase of 3.979 billion yuan, added profits of 1.251 billion yuan and the taxes increase of 188 million yuan. The research results show that the technology has high technical integration, strong practicability, high degree of transformation, significant economic:, sexual and ecological benefits, which provide technical supports for the sustainable development, loss reduction and efficiency increase of the sugarcane industry in the low-latitude plateau sugarcane region, and make significant contributions to the economic development of ethnic minorities in the border-stricken areas and the increase of farmers" income and poverty alleviation. [ABSTRACT FROM AUTHOR]

Spodoptera frugiperda (J. E. Smmith) is one of the major migratory pesls warned by the Fool and Agriculture Organization (FAO). Il has successfully invaded sugarcane and corn in Jinggu, Longchuan, Gengma, Menghai, Yingjiang, Lancang of Yunan Province, China. In view of the great variety of hosts, wide range of habitats and strong migration ability, S. Jhigiperda has the potential of causing catastrophic threats to sugircane production. In this paper, we made a systematic introduction to the morphological and biological cliaracteristies of S. jnigiperda, analyzed its occurrence situations and occurrence trends in Yunnan of China and other countries around the world, and proposed the control strategies and measures of ecological regulation and control, natural enemies protection and utilization, biological control, pesticide control and adults trapping based on the outbreak characteristics of S. Jhigiperda and the actual sugarcane production in low latitude plateau areas. [ABSTRACT FROM AUTHOR]

Sugarcane borers are the most common pests in Yunnan sugarcane areas, and their harm is the most serious presently. The damage caused by sugarcane borers has become the first important factor seriously influencing the sustainable and stable development of sugar industry in Yunnan. To scientifically and effectively prevent and control sugarcane borers to ensure the production safety of sugarcane, the characteristics of occurrence and damage of sugarcane borers in Yunnan sugarcane areas were systematically introduced, and corresponding comprehensive control measures and strategies were proposed according to the characteristics of its occurrence and damage and the actual production of sugarcane. [ABSTRACT FROM AUTHOR]