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Vegetable Crops

Odd Damage to Greenhouse Watermelon Transplants

April 16, 2021cmanneri

Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu There have been several reports of odd-looking damage to watermelon transplants being grown in greenhouses these past couple of weeks. The damage does not appear to be cold damage per se,… Continue Reading →

Vegetable Crops 29:4, transplant production, watermelon

Sulfur and Vegetable Crops

April 16, 2021cmanneri

Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Sulfur is considered one of the secondary macronutrients that vegetable crops require for growth. Sulfur is a component of four amino acids and is therefore critical for protein formation. It is also… Continue Reading →

Vegetable Crops 29:4, sulfur, vegetable crop nutrients

Before Laying Plastic, Check the Soil pH

April 16, 2021cmanneri

Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Mid-April is when plastic mulch laying starts for many of our summer crops. Each year we see problems with low bed pH under plastic mulch. This can result in a range of… Continue Reading →

Vegetable Crops 29:4, cantaloupe, pH, plasticulture, vegetable crop management

Minimum Soil pH for Vegetables

April 16, 2021cmanneri

Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu The following are minimum pHs for various vegetable crops. Crop Min. pH Cucumbers, cantaloupes, squash, pumpkins 5.8 Watermelons 5.5 Tomatoes, peppers, and eggplant 5.8 Cole crops (broccoli, cabbage, cauliflower, Brussels sprouts, kale,… Continue Reading →

Vegetable Crops 29:4, pH, vegetable crop management

Vegetable Crop Insect Scouting

April 16, 2021cmanneri

David Owens, Extension Entomologist, owensd@udel.edu Asparagus Scout for asparagus beetle adults and eggs on emerging spears. Eggs are small, cylindrical and dark colored. They stick into the spear at a 90-degree angle. There are two species that feed on asparagus,… Continue Reading →

Vegetable Crops 29:4, asparagus, vegetable insect scouting

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