Comparison of Economic Optimum Nitrogen Rates for Rice in Arkansas

Historically high N prices have increased farmer interest in economic optimum N rates for rice (Oryza sativa L.). This study uses five to 8 yr of rice variety by N data from four research locations in Arkansas varying by soil series [Perry clay (Vertic Haplaquepts); Sharkey clay (Vertic Haplaquepts)...

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Veröffentlicht in:	Agronomy journal 2010-07, Vol.102 (4), p.1099-1108
Hauptverfasser:	Watkins, K.B, Hignight, J.A, Norman, R.J, Roberts, T.L, Slaton, N.A, Wilson, C.E. Jr, Frizzell, D.L
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions Biological and medical sciences commodity prices cultivars economic analysis fertilizer rates fertilizer requirements Fundamental and applied biological sciences. Psychology geographical variation grain yield input costs mathematical models model validation nitrogen fertilizers optimization Oryza sativa profitability rice soil types yield response
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