Abstract Nitrogen (N) fertilizer recommendations for corn (Zea mays L.) should provide adequate rates of N to ensure high yields but should not recommend more than is economical and environmentally sound. The objective of this study was to evaluate the rate of inorganic N fertilization (INF) using the University of Arkansas Cooperative Extension Service (standard recommendation), and the spectrum technology recommendations (app-method) at situations where poultry litter (PL) was applied. Experiments were performed in 2013 and 2014, on a silt loam soil with high residual nitrate-N to evaluate the standard and the app-method. In both years, results showed no significant differences in yield between treatments receiving 0 kg N ha−1 and treatments receiving the standard and the app recommendations at V6, V8, V10 and V12. Although results showed that there was no need for N after PL amendment, the app recommendations averaged 177 kg N ha−1 over the V6 to V12 growth stages versus 246 kg N ha−1 for the standard recommendation. The data collected in this study determined no need for inorganic N when PL is applied. Future research should further evaluate the PL management under a wide range of environmental conditions.

中文翻译：

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在家禽垫料施用后评估玉米对氮的反应

摘要 玉米 (Zea mays L.) 的氮肥建议应提供足够的氮肥以确保高产，但建议不要超过经济和环境无害的施肥量。本研究的目的是在应用家禽垫料 (PL) 的情况下，使用阿肯色大学合作推广服务 (标准推荐) 和频谱技术推荐 (应用方法) 评估无机氮肥 (INF) 的比率. 2013 年和 2014 年在具有高残留硝酸盐氮的粉砂壤土上进行了实验，以评估标准和应用方法。在这两年中，结果表明，接受 0 kg N ha-1 的处理与接受标准和应用程序推荐的 V6、V8、V10 和 V12 处理之间的产量没有显着差异。尽管结果表明在 PL 修正后不需要 N，但应用程序建议在 V6 到 V12 生长阶段平均为 177 kg N ha-1，而标准建议为 246 kg N ha-1。本研究中收集的数据表明，应用 PL 时不需要无机氮。未来的研究应进一步评估各种环境条件下的 PL 管理。