Beginner Gardening: Yellow Tomato Leaves - Under or over watering?, 0 by soulshine0602

soulshine0602 wrote:
I know tomato leaves turn yellow for many reasons. How do I know which reason relates to me?
I am removing the bottom leaves, but I am worried about the upper portion of my plants. No bugs, no mites, and planted in a different area than last year. Should I test for nitrogen deficiency? I fertilized with Osmocote 10-10-10 when first planting. Do I need to fertilize again? With compost this time? If it doesn't rain, I water my garden. I live in Zone 8, specifically Greenville, NC.