Download Ane's Encyclopedic Dictionary of General & Applied by Manjit S Dhooria PDF

By Manjit S Dhooria

Maintaining the necessities of academics and researchers in brain, this encyclopedic dictionary provides the terminology in entomology and pest administration within the such a lot real and complete approach. additionally it is phrases on the topic of the shut kinfolk of bugs, equivalent to mites and ticks and a few different organisms that are pests of plants.

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Blade: A flat, thin structure especially used of mouthparts and antennae. Blast: Plant disease similar to blight ; the common name for the sudden death of flowers, buds, or young fruit caused by disease. Blastogenesis: The origin of different caste traits from variation in either the ovarian Blastokinesis environment of the egg or the nongenetic contents of the egg. Blastokinesis: All the displacements, rotations and revolutions of the embryo in the egg are collectively known as blastokinesis. Such movement is characteristic of the eggs that have much yolk, as is common in insects undergoing incomplete metamorphosis, but eggs that have little yolk have reduced movement or the process is absent.

Behavioural Resistance: A mechanism in insects of resistance to insecticides which involves a behavioural change whereby contact with the insecticide is avoided. Belt: A geographical zone characterized by certain climatic or biological features; ecological unit characterized by its vegetation. Beneficial Insects: Means insects that yield useful products such as bees, lac insects or silk insects; are parasitic or predaceous on harmful insects or other organisms or act as pollinators of useful crops.

This can be inserted to produce the following simplified equation: dN K−N = rN   dt  K  The resulting rate of increase per unit time produces a typical sigmoid growth curve. When point ‘K’ is reached, population growth stops because death and emigration rates equal birth and immigration rates, and either the population crashes or a steady state is established. Cartridge: The part of a respirator which adsorbs fumes and vapours from the air before the applicator breathes them in. Catalyst Case-Making Insects: Many larvae construct tubes or shelters in which they live and from which they feed.

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