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Tomatoes deficient in S often develop pale green color
in the lower leaves and purple discoloration in stems and petioles. Stems
of S-deficient tomatoes are often low in reducing sugars, but high in
starch, soluble N and sucrose (Scott and Eaton, 1951). Additional deficiency
symptoms include woody stems, small, poorly developed fruit, low vitamin
C content, and poor taste (Doiya, 1955). |
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Tomatoes
respond to K applications when soil tests are below the recommended levels
with higher yields of better quality fruit that size properly, and that
ship and store better. In recent California field trials, both the foliar
and sidedress applications of SOP increased yields and soluble solids
of tomatoes (Carlisle, 1995).