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A Comparison of Injected Anhydrous Ammonia into Bermudagrass Sod Compared to Topdressed Applications of Urea and Ammonium Nitrate
Author(s) -
Hill W. E.,
Tucker B. B.
Publication year - 1968
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1968.03615995003200020028x
Subject(s) - anhydrous , loam , chemistry , ammonium nitrate , ammonia , ammonium , zoology , nuclear chemistry , nitrogen , nitrate , mineralogy , agronomy , soil water , soil science , environmental science , biochemistry , biology , organic chemistry
Soil fertility experiments, primarily concerned with the evaluation of anhydrous NH 3 as a source of N for bermudagrass, Cynodon dactylon (L.), when applied with the rolling coulter‐type applicator, were conducted on Parsons silt loam and Port sandy loam soils. Two factorial treatment combinations were used. The first consisted of four rates of N applied as (NH 2 ) 2 CO, NH 4 NO 3 and anhydrous NH 3 . The second consisted of complete factorial combinations of four rates of N as anhydrous NH 3 and three spacings of the NH 3 applicator knife. In general, yields were equal for all sources and all clippings at lower rates of N application. At the higher rates of N application, anhydrous NH 3 produced lower yields in the first clipping and higher yields in succeeding clippings. This lag in response from anhydrous NH 3 was attributed to sod burn from escaping ammonia. Reducing the applicator knife spacing tended to increase NH 3 retention, decrease the sod burn, and increase the NH 3 efficiency at the high rates of N application.