TY  - JOUR
AU  - Izi, Ali
AU  - Armin, Mohammad
AU  - Filekesh, Esmaiel
TI  - Determination of nitrogen fertilizer requirement on sorghum based on leaf color chart
JO  - Agroecology Journal
VL  - 10
IS  - 3
SP  - 15
EP  - 24
PY  - 2014
DO  - 
ER  -