A new nitrogen index for assessment of nitrogen management of Andean mountain cropping systems of Ecuador
Delgado, Jorge A.
Barrera, Victor H.
Alwang, Jeffrey R.
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Corn (Zea mays L.) is important for food security in much of Ecuador. Small-scale farmers are using nitrogen (N) fertilizer without technical advice based on soil, crop, and climatologic data. The literature lacks studies where tools that can quickly assess management practices’ effects