AgroStar Krishi Gyaan
19 Dec 19, 03:00 PM
Insect Life CycleAgroStar Agronomy Centre of Excellence
Spider Life Cycle
Economic Significance: Spider caused damage to various vegetables, fruit, and grains as well as oilseed crops. Some species of spider also act as pathogens and spread viral diseases.
Egg: The female lays about 35–70 eggs on the surface of the leaves under the adult webs. The duration of the egg is about 3-4 days.
Nymph: This is divided into two stages. The first is in the form of a "Protonomph" and the second as a "Deutmanif". Nymph are dirty white or reddish-yellow. The infant stage lasts for 3 weeks.
Adult: Adult is mostly red in colour. They last 12–33 days and cause damage to crops. The adult life cycle from eggs is about 3 to 6 weeks and occurs over several generations in a year.
• Propargite 57% EC @ 25 ml or Fenpropathrin 10% EC @ 15 ml or Sulphur 80 WP @ 15 g per 15 litres of water should be mixed and sprayed.
Source: AgroStar Agronomy Centre Excellence
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