Nitrogen and chlorophyll status determination in durum wheat as influenced by fertilization and soil management: Preliminary results.

SPAD readings and leaves chlorophyll concentration We found a positive and significant exponential relationship between SPAD readings and leaves chlorophyll concentration for the factorial combinations NTxN0 (R 2 = 0.74); no significant relationship where found for both factorial combination RTxN0 (R 2 = 0.08) and CTxN0 (R 2 = 0.05) with, in the latter case, a negative trend (CTxN0: y = 1.6783e -0.007x ) ( Fig 2 ).

also in 4,201 other papers