15 Reasons why tomato plant leaves turning yellow + 12 Fixes

Numerous farmers like cultivating tomato plants that may flourish with little care if planted in areas with lots of sunlight and water.

On the other hand, Tomatoes are prone to a variety of issues that can leave their owners in a state of distress. It’s amazing how many individuals still grow these, given how difficult they are.

Tomato Plant Leaves Turning Yellow can be caused due to different factors. Yellow tomato leaves, though on the other hand, do not always indicate that the plant is in trouble. Pest infestations, illness, or severe warmth may impair the health of tomato leaves causing their discoloration to yellow. These factors also affect the plant’s stalks or fruits which causes the lowering overall production of tomatoes.

Top 15 Causes Of tomato plant leaves turning yellow

Tomato Plant Leaves Turning Yellow

The most prevalent reasons for yellowing tomato leaves are listed here, along with what you could do about it.

1) Early Blight

These bottom, older leaves will develop oddly shaped yellow splodges that grow to brown patches with a yellow “dome” surrounding them in the early stages of the disease. The splodges have a brown core, almost like a bullseye.

As the illness spreads untreated, the whole branch and bottom tomato leaves turn yellow, eventually brown, before eventually shriveling up.

2) Septoria Leaf Spot

Such dots are relatively small and far more frequent unlike initial blight spots because they have a more circular shape. The dots will combine into a bigger brown region as the illness advances and the patches expand in size.

Water-soaked sores, almost always on the underneath of the leaf also do occur. A secondary disease can emerge in the core, with small black pimple-like patches ( tomato plant yellow leaves brown spots) that infect the remainder of the crop. The leaves will become yellow, brownish, and eventually die if left untreated.

3) Verticillium Wilt

Remove the stalk at the soil’s surface if you detect verticillium wilt, then if you discover brown in the typically white plant tissues, the disease has gotten out of control.

4) Fusarium Wilt

Although the plant’s development is slowed, if the development is restricted to one branch, many of the crops might mature even before the plant dies. Cutting the branch for fusarium wilt will show the brownish vascular structure and verticillium-like wilt, and there is no treatment.

5) Tomato mosaic virus

Fruit development may be severely reduced on diseased plants but those that did develop may be spotted with yellow spots and necrotic patches, with a brownish core. Infected stems, sepals, leaves, and seeds may all display symptoms.

6) Tomato Yellow Leaf Curl

Diseased plants’ internodes shrink, and their development is impeded, giving them a bushy look that is frequently alluded to as ‘orchids’ or broccoli-like development.

Initially in the blooming period aphids are common on tomato crops. Tomato leaves may yellow and fade as a result of their eating, but the impact is typically not serious except your crops are already affected by dryness or illness.

8) Psyllids

Psyllid nymphs are roughly the dimension of an aphid and can be discovered on the lower part of leaves. They are yellow at first before turning emerald. Psyllids release sugar-like particles while they munch on your plant.

9) Whiteflies

The most dangerous whiteflies towards your tomato crop are Silverleaf and garden whiteflies, however, numerous kinds can be discovered on the leaves of your tomato crop.

Leaves might yellow and twist as a result of whitefly eating. Fruit that has been fed by Silverleaf whitefly ripens abnormally. Adults are little yellowish bugs with fluffy feathers which can be seen through amplification and are spotted on the lower part of your plant’s leaves.

10) Flea Beetle

While immature tomato plants can withstand a flea beetle assault, dry, gusty weather might add significant stress to induce plant demise.

Flea Beetle also causes yellow tomato plants.

The presence of yellow-brown leaves on tomato plants might signal that the plant isn’t getting enough sunshine. Even when the plant is in direct sunshine, the lower leaves could be getting insufficient light while becoming yellow.

11) Lack Of Sunlight

Aphids on the other hand may spread viruses, while the dew they produce draws ants and can lead to sooty mold diseases.

When tomato crops are regularly replanted in just the same ground, the soil turns barren well as the pH level rises. Yellow leaves on tomato plants as well as no tomato output will occur if the tired soil turns excessively acidic.

13) Lack Of Nitrogen

14) Under-watering

The leaves margin will change into a golden tone initially. It will then proceed until the whole leaf has become yellow and has fallen off the plant.

15) Over-watering

Tips For Fixing Tomatoes Yellow Leaves

1. Make Use Of A Fungicide.

2. Get Rid of Your Pest Challenges

3. Keep An Eye On The Watering

Read the complete and original article on Tomato plant disease, pests, and care.

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