Jumat, 04 Juli 2014

How often should you fertilize tomato plants?

To get the biggest tomato yield, start fertilizing before you plant and periodically during the growing cycle. Then, get your kitchen ready for homemade marinara sauce and juicy tomatoes topping your sandwiches.

When to fertilize
Fertilize the tomato plant about one or two weeks before the first fruit ripens. Repeat the fertilization two weeks after you pick the first fruit and then again one month later.

Proper amount of fertilizer
Test the soil before fertilizing. This tells you which nutrients the soil is lacking. Tomatoes prefer a soil with a pH of 6.5 to 7. Work a timed-release fertilizer into the top 6 inches of the soil before planting the tomatoes. Once the proper level is obtained, treat the tomatoes with a maintenance fertilizer at 1 lb. per 100 square feet.

Types of fertilizer
Tomatoes grow best with a balanced fertilizer with equal amounts of phosphorus, nitrogen and potassium. For instance, too much nitrogen results in a leafy plant with little fruit. Avoid the use of lawn fertilizers. Use a fertilizer product that is formulated for tomatoes or a complete garden fertilizer when preparing the soil. Use a water-soluble fertilizer once the plant begins to produce fruit.

Growing needs
Plant your tomatoes in areas with full sunlight. Areas away from trees and buildings offer the highest yields. A well-drained soil is important to prevent blossom rot or root rot. Tomato plants require a consistently moist soil. Stick your finger into the top 2 inches of soil. If dirt sticks to your finger it is moist enough. Mulch such as straw, pine needles, grass clippings, compost, shredded bark and leaf mold help conserve the moisture in the soil.

Initial Fertilization
Tomato plants grow quite well if they are planted in fertilized soil, so turn some slow-release fertilizer into the holes you dig for your tomatoes. Dig down about 6 inches and mix the fertilizer with the soil at the bottom and sides of the hole as well as the soil you plan to use to backfill the hole around the plant's root ball. Most young tomato plants should be placed in holes about 3 inches deep, but the fertilizer and soil mixture should be about 3 inches deep under the final hole.

Subsequent fertilizations

Tomato plants need a second fertilizer treatment just after the tomatoes begin to form. As soon as you see a few defined tomatoes about the size of marbles, add another round of fertilizer. Spray the ground around the plant with a water-soluble fertilizer or turn quick-release fertilizer into the soil around the base of the plant. As the tomatoes grow, fertilize the plants every seven to 10 days until the tomatoes are ready to pick.

Soil types
Tomatoes are fairly hardy and grow in many soil types. However, not all soil holds the fertilizer well. For dense soils with large amounts of clay, stick to 10 days between fertilizations after the tomatoes appear. Sandy soils tend to let nutrients leach away, meaning you must fertilize more often, at least every seven days.

Considerations
Tomatoes need low-nitrogen fertilizers, such as a 8-32-16 or 6-24-24. These should be applied at a rate of about 1 pound per 100 square feet. If you are only planting one or two plants, mix a couple of tablespoons of fertilizer into the soil around each plant during the applications.

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