Symptoms
Reduced plant height and uniform yellow chlorosis of leaves are signs of nitrogen deficiency. A faint reddish discoloration is spreading over the mature leaf blade. Stems and stalks turn red as well. Buds show purple spots similar to plants with P deficiency. Early flower development combined with shorter flowering period.
Reasons
Nitrogen deficiency
N deficiency foliar symptoms differ depending on the season: In the early or midseason, older leaves show yellowgreen chlorosis, whereas a reddish discoloration appears later in the season.