What Causes Tomato Plant Leaves To Turn Yellow

Too much or too little water can cause yellow tomato leaves.

Some nutrients are very mobile. Yellowing leaves on tomato plants could indicate something as simple as too much water or something serious for instance a pest attack which could turn ugly. Unless soil nitrogen is regularly replaced through fertilizer applications nitrogen deficiencies turn lawns and plant leaves yellow or pale green. A tomato plant s bottom leaves will turn yellow due to age nutrient deficiencies uneven watering or diseases.

When the plant absorbs water it s able to absorb nutrients. Sometimes it is natural and not a cause of worry but all the other times you need to pay attention. Nitrogen deficiency and early blight are common causes of yellow leaves on the bottom of a tomato plant. This is actually what makes this fungus so dangerous.

According to an article posted by jim isleib for michigan state university about 85 of the plant diseases are caused by fungal or fungal like organisms. Soak tomatoes thoroughly once every five to seven days depending on weather and soil type. Plant leaves can also turn yellow when the plant has been affected by a fungus infection or a virus. When yellow leaves happen where soil ph is ideal a true nutrient deficiency may exist.

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Let the soil dry between watering and never allow the soil to remain soggy. Water tomato plants carefully at the base of the plant and keep the leaves as dry as possible. Nutrient deficiencies are one of the most common causes for yellowing leaves on all plants including tomato plants. Another disease that causes the tomato leaves to turn yellow is fusarium wilt.

Leaf spot diseases are caused by either bacteria or fungus both of which feed voraciously on the leaves of your plant. Lack of sunlight at the base of the plant. Of course there are some steps you can take to prevent yellow leaves on your tomato plants assuming age is not the problem. The lack of certain nutrients in tomato plants e g.

There are plenty of reasons for the tomato leaves to turn yellow. You shouldn t have any doubt in your mind that it s leaf spot disease and not anything else. This disease causes the plant to turn yellow but it s usually a telltale yellowing. It doesn t mean your plant won t survive but it does mean it needs a little extra care.

It s caused by fusarium oxysporum a pathogen that usually grows in the soil. Nutrient deficiency is often caused by the lack of nutrients in the soil because of under fertilization or poor fertilization. The top reasons your tomato leaves are turning yellow include. A nutrient deficiency can occur when there isn t an adequate amount of nutrients in the soil or the plant is incapable of bringing those nutrients in.