Sunday, April 21, 2024

Cotton Pests

Cotton insects are the principal cause of yield losses. Estimates indicate that the yield losses due to insect infections would amount to almost 15% of world annual production. More than 1300 different species of insect pests attack the crop. Among the most common and endogenous species found in cotton fields are:

[restabs alignment=”osc-tabs-left” responsive=”false”]
[restab title=”Spotted Bollworm” active=”active”]Egg is greenish blue. The larva of short age is creamy white and black head while large larvae has brownish & blackish spots. Female lays eggs in evening on flowers, flower buds etc of 200 – 400. It can enter into stem, also attack flower buds, balls, enter into it, eat there and secrete fesses outside. The quality of lint is destroyed.[/restab]

[restab title=”Pink Bollworm“]This forms double seed and hibernate there. Female lays 100-250 eggs singly or double gives on flower, flower buds. The larva enter the flower, secrete material which join flower petals and forms rossetted flowers. The infected flower cannot open and it affects the reproductive parts of flower. It also enters the bolls and closes the hole. It destroys lint..[/restab]

[restab title=”American Bollworm“]It is most destructive pest. Female lays eggs separately up to 1500. Earlier white then white color. Larvae feed on foliage and fruit. Young larvae feed gregariously and skeletonize leaves.Bigger larvae become solitary and eat large irregular holes in foliage.The damage is found in patches in the beginning, but spread widely if not controlled[/restab]

[restab title=”White Fly“]Adults are about 1/16 inch in length (1.5 mm), very active, snow-white, and have 4 wings crossed by 2 indistinct gray lines. Nymphs are less than 1/13 inch in length (.2 mm), pointed at both ends, about 1/25(1 mm) inch long, and have 2 pairs of fringed wings.It has winged or wingless adults. One is greenish black other has brown color. Its female lays egg but it also can pathogeneses. Both adult & nymph damage secrete, sugary material on which salty mold grows.[/restab]

[restab title=”Jassids“]It is yellow green in color and nearly 3 mm long it has alternate host i.e. potato, Brinjal etc. Its population increases in July & August both adult & nymph damage Sucks Chlorophyll and plants are weakened.[/restab][/restabs]

agrinfobank.com.pk Team
agrinfobank.com.pk Teamhttps://agrinfobank.com.pk
agrinfobank.com.pk is a comprehensive online platform dedicated to providing valuable agricultural information and resources in Pakistan. With a focus on promoting sustainable farming practices, enhancing agricultural productivity, and empowering farmers, agrinfobank.com.pk serves as a one-stop hub for all things related to agriculture in Pakistan. Through its user-friendly interface and a vast array of content, the platform aims to connect farmers, researchers, policymakers, and other stakeholders, facilitating knowledge exchange and driving the transformation of the agricultural sector in Pakistan.

Read more

READ MORE ARTICLES

EXCLUSIVE CONTENT

Vegetables calendar for Pakistan

Tomato, Hot pepper, sweet pepper, Brinjal, Cucumber, Okra, Bottle Gourd, Sponge Gourd, Bitter Gourd, Tinda Gourd, Pumpkin, Arum, Potato, Mint, Turmeric, Ginger, Musk Melon, Water...

The dying art of making handmade farming tools

Every morning at 7am, Gulsher Khan opens a small...

Effect of pathogens on membranes alteration

Cell membranes consist of a double layer of lipid...

Can graviola cure cancer?

Graviola is a substance that comes from a tree...

Sustainable Rice Platform (SRP)

The Sustainable Rice Platform (SRP) is a multi-stakeholder partnership to promote...
Need Help? Chat with Us
Please accept our privacy policy first to start a conversation.