Effects of sulfur on nitrogen recovery in coastal bermudagrass as influenced by sulfur fertilization
作者:
J. M. Phillips,
W. E. Sabbe,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1994)
卷期:
Volume 25,
issue 9-10
页码: 1763-1769
ISSN:0010-3624
年代: 1994
DOI:10.1080/00103629409369150
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Research was conducted during two growing seasons to determine nitrogen (N) and sulfur (S) fertilizer recovery of Coastal bermudagrass [Cynodon dactylon(L.) Pers.] on a S‐deficient Rilla silt loam (Fine‐silty, mixed, thermic Typic Hapludalf) soil in the Gulf Coastal Plain of the southeastern United States. Sulfur was applied as gypsum or wettable S at the annual initiation of forage growth at 100 kg S/ha. Nitrogen was applied as ammonium nitrate (NH4NO3), urea, and 32% urea‐ammonium nitrate (UAN) solution at rates of 0, 224, and 448 kg N/ha in four split applications. Nitrogen sources did not significantly influence N or S recovery. However, both N and S sources did significantly interact with N rates to affect N and S recovery. Nitrogen recovery declined with increasing N rates but was significantly higher when coupled with S fertilizer. Sulfur recovery increased with increasing N rates with higher recoveries for gypsum than for wettable S.
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