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Some of the leaves on my plants are turning yellow. What is causing this?

Yellowing leaves can be caused by several situations. The following are the most common:

1) Early Blight (fungus) - If this is the cause, you should see small circular brown lesions on the leaves as well. The spots become larger. Eventually, bottom leaves fall off.

2) Shading - As the plants mature, the bottom leaves get heavily shaded and naturally turn yellow as they senesce (age). This is not a problem. Any yellowing leaves are no longer productive and should be removed to improve air circulation.

3) Low nitrogen or potassium - If the nitrogen or potassium level is too low, yellowing will occur. Nitrogen deficiency shows up as a general yellowing of the entire plant. Potassium deficiency will appear as bright yellow leaf margins (edges) on otherwise green leaves.

4) Low Magnesium - Interveinal yellowing on older leaves is from low magnesium. If this is suspected, spray 2 TBL per gallon of magnesium sulfate (epsom salt) on the plants and see if they "green up" in a few days. For all suspected nutrient problems, a tissue analysis is recommended.

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Filed Under: Commercial Horticulture, Commercial Fruit and Nuts, Farmers Markets, Greenhouse Tomatoes, Organic Fruit and Vegetables, Other Vegetables August 17, 2017

RAYMOND, Miss. -- Produce growers, packers, industry suppliers and others can learn the requirements of the new federal Produce Safety Rule during one of three upcoming workshops around the state.

Mississippi Greenhouse Tomato Short Course logo
Filed Under: Agriculture, Greenhouse Tomatoes January 18, 2017

RAYMOND, Miss. -- Greenhouse tomato growers and other interested individuals are invited to attend the 27th annual Mississippi Greenhouse Tomato Short Course March 7 and 8.

Experts with the Mississippi State University Extension Service, the Mississippi Agricultural and Forestry Experiment Station, and Auburn University will present the latest production information. Experienced growers and industry professionals from around the U.S. also will speak.

The short course will be at the Eagle Ridge Conference Center, located at 1500 Raymond Lake Road in Raymond.

Filed Under: Green Industry, Greenhouse Tomatoes February 12, 2015

RAYMOND, Miss. -- Greenhouse tomato growers and other interested individuals can learn all aspects of production during the 25th annual Greenhouse Tomato Short Course March 3 and 4 in Raymond.

Experts from the tomato industry, the Mississippi State University Extension Service, the Mississippi Agricultural and Forestry Experiment Station, and Auburn University will present the latest production information.

The workshop will be held at the Eagle Ridge Conference Center at 1500 Raymond Lake Road in Raymond.

Filed Under: Greenhouse Tomatoes February 5, 2014

JACKSON – Greenhouse tomato growers can learn everything from greenhouse design to budgeting during the 24th annual Mississippi Greenhouse Tomato Short Course March 4-5 in Raymond.

Experts from the Mississippi State University Extension Service, the Mississippi Agricultural and Forestry Experiment Station, the University of Florida Suwannee Valley Agricultural Extension Center, Auburn University and the tomato industry will present information to help current growers and those interested in starting a greenhouse tomato business.

Filed Under: Greenhouse Tomatoes January 31, 2013

RAYMOND -- Tomato growers from around the world will attend Mississippi State University’s 23rd annual national Greenhouse Tomato Short Course March 5 and 6 at the Eagle Ridge Conference Center in Raymond, Miss.

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Monday, February 27, 2017 - 1:00am

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Greenhouse Tomatoes and other vegetables, Field Vegetables, Mushrooms