• Mealybugs and scales

  and therefore the yield. Where flowers and fruit are concerned, these often drop off; plant sap is low in proteins and rich in sugars. In order to gain an

• Aphidius colemani

  warning substance, which affects the entire population, often causing aphids to drop from the leaf and fall to the ground. Although many aphids die as a result

• Entonem keeps young orchids free from fungus gnats

  rinse off nematodes that are on the leaves. A while later, I collect a few drops of drainage water from underneath the treated crop. I examine this under

• Spider mites and other mites

  discolored or speckled leaves, stunted growth, and in severe cases, leaf drop or death of the plant. Damage symptoms are important for early detection [...] may appear stunted or have reduced growth. In severe cases, the leaves may drop prematurely and the plant may die. Additionally, spider mites reduce the

• Caterpillars: a growth explosion in the life of butterflies and moths

  June 26, 2023

  Caterpillars don’t always have to lock themselves into a cocoon: some species drop to the ground and hide in a subterranean hollow, which they reinforce with

• Limonica strong contender against persistent thrips

  July 31, 2025

  hatching rate of Limonica eggs is low in hot, dry conditions or when humidity drops below 65%, so those factors really need to be considered when planning your

• Pierce's disease of grapevine

  yellow or red. This desiccation spreads and the whole leaf may shrivel and drop off. Infected stems show irregular maturation and patches of brown and green

• Healthy seed: the basis for a healthy crop

  May 6, 2024

  much or too little water, heat or cold stress. Resulting in a significant drop in yield and (financial) loss for the grower. Which fungal diseases are most

• Pollination under artificial lights

  February 11, 2019

  With daylight hours shortening and temperatures beginning to drop, growers in the higher latitudes of the Northern Hemisphere are paying special attention

• Protecting onion harvest with biological crop protection

  November 28, 2024

  both early in the season and towards the end of the season when temperatures drop. A large advantage is that they can be used from as low as 5°C. These beneficial