Pests
This small, soft-bodied insect sucks sap from plants and often leaves a sticky substance called honeydew.
Aphids
This fungal disease appears as a white powdery coating on plant leaves.
Powdery Mildew
This nutrient deficiency causes older leaves to turn yellow and plants to grow slowly.
Nitrogen deficiency
A plant is covered in aphids that are sucking sap from the leaves. What is the best management technique to control this pest?
Using beneficial insects like lady beetles or insecticidal soap
These tiny pests are related to spiders and create fine webbing on plants while causing yellow speckled leaves.
Spider Mites
This disease causes brown or black spots to appear on plant leaves.
Leaf Spot
When leaves turn yellow but the veins remain green, the plant may be lacking this nutrient.
Iron Deficiency
Plants in a greenhouse develop a white powdery substance on their leaves. What is the best management technique for this disease?
Improving airflow and applying fungicide if needed
These pests are the larval stage of butterflies or moths and cause large holes in leaves by chewing plant tissue.
Catepillars
This disease occurs when plants are overwatered and roots become brown and mushy.
Root Rot
This nutrient deficiency causes brown or burned edges on plant leaves.
Potassium Deficiency
A plant’s leaves have brown spots spreading across them from leaf spot disease. What is the best management technique?
Removing infected leaves and improving airflow
These tiny white flying insects are commonly found on the underside of leaves and often swarm when a plant is disturbed.
Whiteflies
This common fungal disease spreads easily in humid conditions and often appears on garden plants like squash, cucumbers, and roses.
Powdery Mildew
When plants lack essential nutrients in the soil, they experience this type of plant problem.
Nutrient deficiency
A plant is turning yellow because it lacks nitrogen. What is the best management technique
Applying nitrogen fertilizer
This type of pest has a hard shell and often leaves plants with “skeletonized” leaves where only the veins remain.
Beetle
Many plant diseases are caused by these three types of pathogens.
Fungi, Bacteria, and Viruses
This management method is commonly used to correct nutrient deficiencies in plants.
Fertilizer
A plant is suffering from root rot because the soil stays too wet. What is the best management technique?
Improving soil drainage and reducing watering