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Current Category » Production Techniques for Biological Control Agents

Important Terms used in Biological Control of Crop Pests – II

Balance of Nature:

The natural tendency of plant and animal populations, resulting from natural regulative processes in an undisturbed environment, to neither decline in numbers to extinction, nor increase to infinite density.

Biological Control:

Biological pest suppression in its narrow, classical sense, usually restricted to the introduction by man, of parasitoids, predators, and/or pathogenic micro organisms to suppress population of plant or animal pests.

Biological Insect Pest Suppression:


The use or encouragement by man, of living organism or their products for the population reduction of pest insects.

Biotype:

A biological strain of an organism, morphologically indistinguishable from other member of its species, but exhibiting distinctive physiological characteristics; particularly  in regard to its ability to successfully utilize pest-resistant host organisms or to act as an effective beneficial species.

Cleptoparasitism:


A type of parasitism in which the adult parasitoid preferentially appropriates for its own progeny the previously paralyzed and parasitized host of another parasitoid.

Colonization:

The controlled release of a quality of biological control agents in a favorable environment for the purpose of permanent or temporary establishment.

Conservation:

It is the process involved in manipulation of environment to favour natural enemies either by removing or modifying the adverse effects or by providing the lacking pre-requisities.

Density dependent factor:


Refers to mortality factors or processes in the environment which destroys an increasing percentage of the subject population as the numerical population density increase and vice versa.

Density Independent Factor:

Refers to mortality factors or processes in the environment which destroys a relatively constant percentage of the subject population regardless of changes in its density.

Denterotoky:

A type of parthenogenetic reproduction in which the progeny of unmated females may consist of both males and females.

Current Category » Production Techniques for Biological Control Agents