Citrus red mite and Red mites feeding results in a pale stippling visible primarily on the upper surface of the leaf, damage is bigger when crops are water stressed and conditions are hot and dry.

Remains the most difficult disease to control in potato productions. If left uncontrolled, late blight can reduce potato yields by 20 percent to 40 percent even the economic result can be a complete yield loss.

The species of Echinochloa (barnyardgrass) is dominant weed stand out among major weeds infesting rice cropping and damages are variable depending on the weed population, rice cultivar, and management practices adopted by rice farmers.

Trialeurodes vaporariorum is a sucking insect ,nymphs and adults damage plants by sucking the juices from new growth causing stunted growth, leaf yellowing and reduced yields and transmits several plant viruses.