This means the stand will be poor. Low temp and moisture can be risky Soil moisture and temp-eratures at planting time play a role in disease development, too. Low temperatures and too much moisture encourage fungus growth. Once plants are established, injury caused by weather is usually lessened. Seed blights can be partially prevented by using seed treated with proper fungicides and by providing a good seedbed at planting.
Nematodes are parasites which attack many different kinds of plants.
Their damage may go unnoticed because nematodes usually do not kill plants. Plants infested with nematodes may be stunted and have poor color. The root-knot nematode is severe on many vegetables. It causes knots, or galls, on plant roots. It's especially severe on okra, tomatoes, beans, cucumbers, eggplant and peppers.