Research Methods

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Research Methods


The paper aims to study the research paper of different author and then has derived certain essential that refers to identifying the philosophical basics and then from the broader topic further redefining it to a framework that identifies the research problem. In addition to this understanding the design, set strategy and boundaries of the research to obtain the relavant findings.

Research Methods

Identify a philosophical foundation

Relationships between species and host plants entomological are conditioned by various physical characteristics of plants such as size, shape, presence of particular wax and trichomes, phenological stage and color of the plant (Mangold, 1978 Berenbaum, 1995) but also by chemical factors such the presence of secondary metabolites (Vet and Dicke, 1992; Harborne 1993). The aim of the research paper was to know the effects of adult-derived amino

acids and carbohydrates (i.e. fructose, glucose and sucrose) on the longevity, lifetime fecundity, egg viability and population growth of this important pest of brassicas and on the reproduction of Plutella xylostella. The research conducted exhibits causal relationship, which was an experimental research under labortary environment to check the cause and effect between different variables. The philosophy of logical positivism was followed under this research.

Frame a research problem

The past researchers have shown studies on the use of floral resource which has increased efficiency of natural enemies. However, the author in his research has refered to the broader area which aims to discuss floral resources usage and its effect on pest populations.

Determine supporting knowledge

Phytophagous insects are pests formidable crop production. The way to fight is not the most common no doubt the use of synthetic chemicals. of Many species of insects have become resistant to insecticides (nearly 2000 cases of resistance have been reported in 504 species Georghiou, 1991). The development of control methods alternative was therefore amplified, such as biological control, which is a key element of the concept of integrated pest management.

Basic knowledge of the ecology and biology of entomophagous insects are the foundation of successful uses these auxiliary (Poppy, 1997).

As shown previously, effects multitrophic plant - insect interactions involve complex. Host plants can influence the auxiliary entomophagous either directly emit chemicals that modify behavior, or indirectly by affecting their prey. The impact of semiochemicals may be antagonistic to that observed on phytophagous pests. Biological control the latter by entomophagous insects is difficult to expected (Vinson, 1981, Bottrell et al., 1998).

Identify a theory base

The theory ...
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