The temperature has a direct effect on the activity of insect pests and their developmental rate. increasing could profoundly influence population dynamics, life cycle, length reproduction, fecundity, longevity. In present study, impact different temperatures (32, 33, 34, 35 36°C) degree days fitness Spodoptera frugiperda (J. E. Smith) was evaluated under artificial conditions. results showed t...

Estimating energy consumption for environment conditioning is a key point in determining the of building. The required air can be used to quantify climatic rigor given location. However, Brazil does not have technical standards and/or zoning established by calculation method definition degrees-days. This paper aims present update proposal based on degree-day, elaborated Stensjö, Ferreira e Lour...

Elham Davoodi 1, Hoda Ghasemieh 1,†, Okke Batelaan 2,† ID and Khodayar Abdollahi 3,*,† ID 1 Faculty of Natural Resources and Earth Sciences, Kashan University, KM 6 BLVD. Ghotb Ravandi, Kashan 8731753153, Iran; [email protected] (E.D.); [email protected] (H.G.) 2 National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelai...

The impact of Meloidogyne hapla on alfalfa (Medicago sativa) yield was described by a multiple point damage model as a function of current plant status, cumulative pest stress, and crop history. Nematode-degree days (NDD(female symbol)), calculated on a physiologic time scale as total area under the adult female population density curve, were used to express M. hapla parasitism as cumulative ne...

Using a shape model (SM) is typical method to determine the phenological phases of crops with long-time-series satellite remote sensing data. The average AGDD-based (AAGDD-SM) takes temperature into account compared SM, however, commonly used daily not sufficient exact AGDD owing possibly significant changes in temperatures throughout day. In this paper, modified was proposed for better estimat...