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- W2064031283 abstract "Abstract The effects of water application level and nitrification inhibitors on NO 3 − ‐N leaching from a sandy loam soil were evaluated using soil columns and nonweighing field lysimeters. In soil columns (297 mm diam by 1.2 m deep) fertilized with 224 kg N ha −1 , addition of the nitrification inhibitor nitrapyrin [2‐chloro‐6‐(trichloromethyl)pyridine] reduced NO 3 − ‐N leaching losses by 51 and 30 kg ha −1 , respectively, for the 12.7‐ and 38.1‐mm weekly water application levels. Both nitrapyrin and Terrazole (5‐Ethoxy‐3‐trichloromethyl‐1,2,4‐thiadiazole) (Olin Corp., Little Rock, Ark.) inhibitors were equally effective in reducing total NO 3 − ‐N leaching losses from soil columns after 100 d for the 38.1‐mm water application level. The change in flow‐weighted NO 3 − ‐N concentration due to use of nitrification inhibitors was about −0.4 to −1.0 mmol L −1 . Annual NO 3 − ‐N leaching losses measured at the 1.2‐m depth in field lysimeters cropped with corn ( Zea mays L.) over a 3‐yr period averaged about 12 kg ha −1 less (7%) for nitrapyrin‐coated urea. The results were not consistent since nitrapyrin reduced NO 3 − ‐N leaching during the growing season by 12 and 17% for 2 of the 3 yr and post season leaching by 35% for 1 yr. The change in flow‐weighted NO 3 − ‐N concentration (3‐yr avg) due to nitrapyrin was −0.4, −1.5, and +0.9 mmol L −1 , respectively, for the growing season, post season, and preemergence periods. Nitrification inhibitors may help to minimize nonpoint‐source pollution on sandy soil where supplemental irrigation is used by reducing and/or delaying NO 3 − ‐N leaching particularly during the growing season when N is utilized by plants." @default.
- W2064031283 created "2016-06-24" @default.
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- W2064031283 date "1984-04-01" @default.
- W2064031283 modified "2023-09-27" @default.
- W2064031283 title "Nitrate Leaching as Influenced by Water Application Level and Nitrification Inhibitors" @default.
- W2064031283 doi "https://doi.org/10.2134/jeq1984.00472425001300020026x" @default.
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