Summary
Background: Increasing cost of fertilizers warrants the necessity of finding methods for increasing the use efficiency of nitrogen in a cropping system. Data from on-farm research on evaluation of use efficiency of applied nutrients using check plot or omission plot technique has been lacking. Methods: A researcher designed and farmer managed experiment was conducted in Angul district under Mid Central Table Land Zone of Odisha to study the on-farm crop response to plant nutrients by involving 12 farmers during 2015-16 and another 12 farmers during 2016-17 in rice (Oryza sativa L.)- groundnut (Arachis hypogaea L.) cropping system with seven treatments, viz. control (no fertilizer application), recommended N alone (N-0-0-0), NP (N-P-0-0), NK (N-0-K-0), NPK (N-P-K-0), NPK+ZnSO4/CaSO4 (N-P-K-
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