Search. Read. Cite.

Easy to search. Easy to read. Easy to cite with credible sources.

Research Article
Population Dynamics of Predatory Insects and Biological Control of Cotton Pests in Pakistan

Ghulam Hussain Mallah, Akram Khan Korejo, Abdul Razaque Soomro and Abdul Wahid Soomro

Journal of Biological Sciences, 2001, 1(4), 245-248.


Biological control is the most important component of IPM because a number of pests of a crop, remain under natural control if crop is unsprayed. Many natural enemies such as predatory beetles, bugs, lacewings and spiders have been recorded in cotton fields in Sindh Pakistan, but their potential value has been widely exploited in cotton pest management due to lack of techniques to conserve and maximize both their abundance and effectiveness. During 1999 cotton season population dynamics studies were carried out to observe the beneficial insects under sprayed and unsprayed conditions at Sakrand Sindh. Three spray applications were given in sprayed block with Dimethoate 40 EC, Thiodan 35 EC and Tracer 480 SC against sucking and bollworm complex of cotton. Predators appeared 10 days after germination of cotton plant. The species observed during the season were i.e. chrysopa, orius, geocoris, spiders, coccinellids, Zanchius and campylomma. The numbers of predators ranging from three to fifty six thousand in unsprayed plot and 0.7 to 8.9 thousands in sprayed block. These predators were active throughout the cotton season with a peak population during July and August.

ASCI-ID: 38-184

Cited References Fulltext

Related Articles

Effect of Microbial Antagonists on in vitro Growth of Pythium aphanidermatum

Journal of Biological Sciences, 2001, 1(4), 224-226.

Evidence of Diadegma insulare (Cresson), a Parasitoid of Diamondback Moth, Plutella xylostella L., Present in Various Habitats

Journal of Biological Sciences, 2001, 1(8), 742-743.

Potentiality of Micraspis discolor (F.) as a Biocontrol Agent of Nilaparvata lugens (Stal)

Journal of Biological Sciences, 2002, 2(9), 630-632.

Studies on Biological Control of Sugarbeet Pathogen Rhizoctonia solani Kuhn

Journal of Biological Sciences, 2002, 2(12), 800-804.

Biological Control of Sclerotium rolfsii Damping-off of Tropical Pine (Pinus merkusii) with Three Isolates of Trichoderma spp.

Journal of Biological Sciences, 2003, 3(1), 95-102.

Biological Control of Stem and Root-rot of Wheat Caused by Bipolaris spp. by using Antagonistic Bacteria, Fluorescent Pseudomonads and Bacillus spp.

Journal of Biological Sciences, 2005, 5(3), 347-353.

Comparative Toxic Effects of the Venoms from Three Wasp Species of the Genus Polybia (Hymenoptera, Vespidae)

Journal of Biological Sciences, 2005, 5(4), 449-454.

Biological and Chemical Control of Fruit Rot in Greenhouse Sweet Peppers (Capsicum annum L.) Caused by Fusarium subglutinans

Journal of Biological Sciences, 2005, 5(5), 610-615.

Antibacterial Activity of Iranian Streptomyces coralus Strain 63 Against Ralstonia solanacearum

Journal of Biological Sciences, 2006, 6(1), 127-129.

A Comparison Between Antibiotic-Resistant Mutants of Antagonistic Bacteria and Their Wild Types in Biological Control of Cotton Seedling Damping-Off Disease

Journal of Biological Sciences, 2008, 8(5), 914-919.

Isolation of Aspergillus sulphureus, Penicillium islandicum and Paecilomyces variotii from Agricultural Soil and their Biological Activity Against Pythium spinosum, the Damping-Off Organism of Soybean

Journal of Biological Sciences, 2010, 10(3), 178-189.

Study on the Efficacy of Iranian Isolates of Beauveria bassiana (Balsamo) Vuillemin and Metarhizium anisopliae (Metsch.) Sorokin Against Rhyzopertha dominica F. (Coleoptera: Bostrichidae)

Journal of Biological Sciences, 2009, 9(2), 170-174.

Population Dynamics and Stock Assessment of Labeo rohita (Ham.), L. calbasu (Ham.) and L. gonius (Ham.) From the Mymensingh Basin

Journal of Biological Sciences, 2001, 1(7), 671-675.

Population Variation of Hill Mynah in Thailand

Journal of Biological Sciences, 2004, 4(2), 229-233.

Cited By

Presence and abundance of different insect predators against sucking insect pest of cotton.

Journal of Entomology, 2008, 5(1), 31. DOI: 10.3923/je.2008.31.37

The Effects of Capture Efficiency on the Coexistence of a Predator in a Two Predators-One Prey Model

Journal of Applied Sciences, 2011, 11(22), 3717. DOI: 10.3923/jas.2011.3717.3724