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Cracked soil is a distinct sign of dryness and under-watering.Ground image by Mykola Velychko from Fotolia.com
Check the moisture of the soil in which your tomato plants are growing. Look at the soil to see if it is dusty or cracking. Feel the soil with your fingers to find out if it is hard. You need to give your plants more water if any of these signs show up. If there is standing water or if the soil is wet when you stick your fingers into it, allow the plants to soak up more of the water before you water again. - 2
A nice green, firm stem is a sign of adequate water consumption.Green Tomato image by toolboxdesign from Fotolia.com
Feel the stems of your tomato plants. If they are limp and mushy, you are over-watering your plants. Also, a yellow discoloration of the stems suggests they have been watered too much. If the stems are brittle or browning, the plants need more water. - 3
Check tomato plant leaves.tomato plants image by JLycke from Fotolia.com
Look at the tomato plant leaves. Similar to the stems, yellowing can be a sign of over-watering and water splashing onto the leaves. If they are brown and brittle, you are not watering enough. - 4
Look for splitting in the skin.tomato image by Christopher Walker from Fotolia.com
Check the tomato skin for splitting. If the skin is splitting, this is a sign of too much water at one time. Refrain from watering and allow excess water to soak into the soil. Also check the tomato for blossom end rot, which is located on the bottom of the tomato. This is a sign of uneven watering.
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