System of the Degree Days (DDs)

Abstract

The various elements of the environment vary from degrees and relative humidity to periodic winds and rains in determining the specific size of human organisms, including insects and mites and their various vital activities in the environment. However, their microscopic bodies and the microenvironments in which they live provide them with protection from the conditions of direct environmental influences from the vital factors of arthropods. The arthropods were able to obtain a result and survive. There is a relationship between the temperature where the cells continue and the speed of development of companies with different temperatures and calculating the compatibility through the equation of the line directly. Therefore, temperatures are considered one of the environmental factors affecting the rates of biological activities. Variation in temperatures also reflects on behavior and function, especially cold-blooded organisms. The dynamics of the population of arthropods, especially insects and mites, changes from year to year as a result of their influence on the factors mentioned, which are temperatures, relative humidity, rain, soil type, pesticides used, and their proximity to the plant host and natural enemies. High temperatures and severe drought lead to the accumulation of high densities of the population of these organisms on plants.