my tomatoes are a little yellowing

[Tess...@aol.com]

Some of my tomato plants are a little light green. They are huge; however the lighter green they get, it appears the less fruit they produce. any ideas on what they need? Tess

[Bob]

Sounds like your nitrogen level has dropped rather dramatically from
the plants using so much.

What is your PH ?

[james...@gmail.com]

Yes I agree ..I would be increasing your nitrogen ..tomatoes will show
real inprovment in a short amount of time (darker leafs) when nitrogen
is added ..I would think about working in well rotted compost and or
manure in and around the plants and maybe starting to water with a all
round liquid fert .