Lima bean sprouting2/28/2024 Don't plant peas after beans or beans after peas as they can both be infected by the same diseases.īeans are legumes and fix nitrogen from the aid of the rhizobium bacteria that live in the nodules on the bean roots. This way the disease can't build up in the soil. Rotation of bean crops around the garden is necessary if you have a problem with damping-off disease or seed rot. There are resistant varieties for this disease. Bean Mosaic disease causes distorted leaves and beans. Don't use sulfur when temperatures go into the 80's - it can burn leaves.ĭispose of all crop residues as rust can have an over-wintering spore that will germinate next spring. Keep leaf litter picked up under plants and use dusting sulfur at first sign of reddish pustules on the back of leaves. Rust, a fungal disease, can be a problem in shady damp spots or plants shaded by taller plants in the early summer. Leafminers are also a late season pest on pole beans and black aphid can attack cowpeas and asparagus beans in mid-summer.ĭiseases can damage beans. An untreated infestation will at times completely defoliate the plants. Late-planted beans are bothered by red spider mites that can defoliate the lower half of the plants. They do chewing (cucumber beetle) and sucking damage (leaf hoppers and aphids) as well as transmit viral diseases. Insects that are the most destructive to bean plants are the cucumber beetle, leafhoppers and the aphid. If a catalog description says the bean does well in the North or in cool weather, don't buy it for Southern California inland areas. One variety that is especially susceptible to the problem is the scarlet runner bean. High temperatures interfere with pollen formation. There are several varieties that won't set flowers and produce beans when the temperatures are in the 90's. Hot spells can occur in some inland areas even as early as May. Plants need good air circulation and drying sun in the morning. Plants will shade the ground but having to handle wet plants to pick beans spreads foliage diseases. On a wide row or bed, spacing of 6 - 8 inches in all directions has disadvantages. Space seed 3 - 4 inches apart and thin seedlings 6 - 8 inches. If planted too close, only the outside rows will yield well. Rows should be at least 18 inches apart because plants will fill in between the rows. Spacing is very important on early bush beans in areas of high humidity. Cover seed with damp soil and water in, then, do not water again until seedlings emerge. Plant sprouted seed one-inch deep with the sprout (root) facing down. Handle sprouted seeds carefully to avoid damage. The planting bed should be ready to seed and the soil should be moist. Check the seed daily and plant in the garden as soon as sprouts begin to appear. Keep the bag in a warm location such as the top of the refrigerator. Fold the towel over the seed and place it in a plastic bag. To do this soak seed in water over night, then drain and spread the seed on a damp paper towel. Seeds can also be pre-sprouted before planting. Seeds can be soaked in tepid water overnight and planted in the garden the next day. There are two ways to speed up seed sprouting. Be sure to water the rows or bed well before planting, then don't water again until seedlings are up. Try soaking or pre-sprouting seed and keep under row covers until plants have their second set of leaves. If planting early, warm up the soil by covering the planting area with row covers for a few days. Plant with the eye of the bean pointing downward. Lima beans, especially, need warm soil temperatures above 65 degrees for good germination. Soil should be in the 60 degree range before planting. Germination problems are generally from planting too early in cold soil. The five most common problems gardeners have with beans are: All of the three types have about the same growing requirements, although there are differences in harvesting. There are 3 classifications for beans: Green or Snap Bean, both pole and bush Shelling bean, both pole and bush and Dried beans, both pole and bush.
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