The Appraisal of SPAD and leaf nitrogen correlation with chlorophyll content in Sugarcane

چکیده مقاله

In order to ascertain the correlation between SPAD reading and actual leaf chlorophyll content as well as illuminating its relationship with leaf nitrogen content of sugarcane an experiment accomplished using completely randomized design with three replications in the field of Sugarcane Plantation and Industry Company of Amir kabir located in Khuzestan province, Ahvaz- Iran in 2012 cropping season. To cope with this research, initially sugarcane’s leaves marked in accordance with their position on the stem with due care to their size and weight then total chlorophyll content and chlorophyll a / b along with nitrogen content of leaf blade determined. Results showed signification and direct relationship between SPAD reading and leaf nitrogen content, ( r 0.81 2  ). With the increment of SPAD readings, total chlorophyll content and leaf nitrogen content increased. Also positive and high correlation established between variables.

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