It’s important to manage pests effectively to protect your onion crops and ensure healthy growth. Here’s how to deal with some common pests:

Thrips:
Thrips are tiny insects that feed on the sap of onion leaves, leaving them with a silvery appearance and causing stunted growth. To control them, consider using Spinosad or Abamectin, both of which affect the insects’ nervous systems, leading to their demise. Another effective option is Lambda-cyhalothrin, which works in a similar way to eliminate these pests.

Onion Maggots and Sea Corn Maggots:
These maggots attack the roots and bulbs of onions, resulting in wilting and plant death. Imidacloprid is a systemic insecticide that targets these maggots as they feed on the plant. Alternatively, Chlorpyrifos is effective by disrupting the pests’ nervous systems.

Salt Marsh Caterpillars: 
These caterpillars feed on onion leaves, which can slow down the growth of your plants. Bacillus thuringiensis (Bt) is a natural option that specifically targets these caterpillars. For quicker results, Permethrin can be used to control them effectively.

By applying these treatments, you can manage these pests and keep your onion crops healthy and productive.