Back to list Pest Control Forecasting and Control Warning Systems Futurcrop - 07-05-2021 FAO repeatedly states that in order to solve pest control problems in agriculture, there is a need to obtain more information, and apply more effective treatments. FORECASTING AND CONTROL WARNING SYSTEMSThus, in order to take more efficient pest efficient actions, it is required those actions to be based on well informed decisions, with all available data, obtained through a DECISION SUPPORT SYSTEM FOR PEST CONTROL, like FundamentalsThe Problem How long does it take a peach twig borer egg (Anarsia lineatella) to hatch?5 days10 days11 daysAll of the above How long the egg takes to hatch depends on temperature Farmers and technicians perform unnecessary preventive treatments because of the fear of losing their crops. However, despite the increasing use of pesticides in modern agriculture, chemical insecticides lose effectiveness because of their constant use, pests developing resistance to them. In fact, over the last 38 years, 436 new arthropods species have developed resistance to chemical insecticides. Related concepts THE DEVELOPMENT OF CERTAIN ORGANISMS IS RELATED TO TEMPERATURE PhenologyThe study of how organisms develop through stages over time. Insects biological development does not occur on a calendar-day basis (as it could be the case with warm-blooded animals, whose body temperatures rarely vary more than a few degrees), but on a unit-of-heat scale (Grade-day). So:Upper and lower thresholdsBelow a certain temperature insects cannot developAbove a certain temperature insects development slows and eventually stopsCumulative Degree Days: A simple method that uses heat units to record physiological time.1 Degree Day is a single degree day of temperature above an insects lower temperature threshold maintained for 24 hours METHODOLOGY TO DEVELOP PHENOLOGY MODELS Each state of biological development is tested at different temperatures at the laboratory.The model is on field validated.At constant temperatures, the development time of each biological phase is recorded.Its upper / lower threshold is determinedFinally, grade-days are calculated for each state of developmentObliquebanded leafroller Choristoneura rosaceanaIf maintained the temperature at 56ºC, OBLR requires an average of 1.050 days to complete its life cycle But, at different temperatures With the algorithms developed, we can calculate DDC=[(Tmax + Tmin)/2]-6.1 244DDC egg hatch of the summer generation433 DDC 95% egg hatch And this information is important, because at the third instar of the Obliquebanded leafroller, larvae cause more damage to the fruit. Bronze birch borer Angrilus anxiusThe number of DD required for a particular phenological event varies yearly, depending on temperature /the weather. In Ohio, emergence of bronze birch borer adults first occurred at1997475 DD1998519 DD1999654 DD2000559 DD2001526 DD5 years average547 DDThe variation in weather/temperature results in differences of up to four weeks in the dates on which these events occur from year to year. However, the order in which the phenological events occurred remained quite consistent from year to year. Related posts Real time pests and vegetable diseases prediction modelsClimatic Change and pest prevention technologiesHow to reduce the use of chemical insecticides FuturCrop improves the monitoring of pests and the effectiveness of treatments Solution to 4 common agricultural pest control problems Subscribe to our newsletter Subscribe to our newsletter to stay informed about all the news regarding futurcrop and take advantage of the special offers Insert your full name Insert your email I have read and accept the privacy policy Subscribe