Determination of Effective Degree-Day for Supporting Chemical Control Against Cutworms （Lep. Noctuinae） in the Sugar Beet  

作　　者：Magdalena Jakubowska Felicyta Walczak JerzyJ6zefatLipa 

机构地区：[1]Department of Methods Forecasting and Pest Registration, Institute of Plant Protection, National Research Institute （IPP-NRI）, W.W~gorka 20, Poznah 60-318, Poland [2]Department of Biological Control Institute of Plant Protection, National Research Institute （IPP-NRI）, W. Wcgorka 20, Poznah60-318, Poland

出　　处：《Journal of Agricultural Science and Technology(A)》2012年第3期314-326,共13页农业科学与技术（A）

摘　　要：The aim of the research was to connect two methods of the chemical control. The first chemical treatments were applied according to the signalling method. The second method was applied according to the phonological criterion i.e., on the basis of the values of effective temperatures sums or heat sums for cutworms. The studies on cutworms infesting sugar beet crops were carried out in the years 2005-2008. The observation performed during the moth flights from May to September included two species, turnip moth （Agrotis segetum Den. ＆ Schiff.） and heart-and-dart moth （A. exclamationis L.）. The dynamics of moth flights was recorded in reference to readings of climatic conditions registered with the field meteorological stations set up near the light traps. Observations on cutworm occurrence during the vegetation season were done every 5-7 days. Moreover, additional studies were conducted under control conditions in the growth chambers at three programmed temperatures （17°C, 20 °C, 24 °C） and relative humidity （50%-70%）. Based on the results the values for the heat sum of 501.1 °C and effective temperatures sum of 230.0 °C were determined for the developmental stages of cutworm. On the base of the results obtained it can be stated that the improved method of short-term forecasting can be an alternative solution in the integrated protection management against pest.

关 键 词：Cutworms monitoring DEGREE-DAY sums of effective temperatures light trap sugar beet （Beta vulgaris L.）. 

分 类 号：S662.1[农业科学—果树学] S433.82[农业科学—园艺学]