Bibliographic Citation
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| Title | Contrasts of nitrapyrin dicyandiamide, and isobutylidene diurea effects on total inorganic soil nitrogen |
| Creator/Author | Martin, H.W. (Savannah River Ecology Laboratory, Aiken, SC (United States)) ; Graetz, D.A. ; Locascio, S.J. (Univ. of Florida, Gainsville, FL (United States)) ; Hensel, D.R. (Univ. of Florida Agricultural Research and Education Center, Hastings, FL (United States)) |
| Publication Date | 1994 Jan 01 |
| OSTI Identifier | OSTI ID: 7105781 |
| DOE Contract Number | AC09-76SR00819 |
| Other Number(s) | Journal ID: ISSN 0010-3624; CODEN: CSOSA2 |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Communications in Soil Science and Plant Analysis; (United States); Journal Volume: 25:5-6 |
| Subject | 54 ENVIRONMENTAL SCIENCES; NITROGEN; ECOLOGICAL CONCENTRATION; PYRIDINES; ENVIRONMENTAL EFFECTS; SOILS; NITRIFICATION; INFORMATION; INHIBITION; INTERACTIONS; SOIL CHEMISTRY; SOLANUM TUBEROSUM; AZINES; CHEMICAL REACTIONS; CHEMISTRY; ELEMENTS; HETEROCYCLIC COMPOUNDS; MAGNOLIOPHYTA; MAGNOLIOPSIDA; NONMETALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PLANTS; SOLANUM |
| Description/Abstract | While much research has been done with nitrification inhibitors, little information exists on their effects on total inorganic soil nitrogen (N) (TISN) (NH4[sup +]-N + NO3[sup [minus]]-N). The objective of this study was to compare the effects of 2-chloro-6(trichloromethyl)-pyridine (nitrapyrin) and dicyandiamide (DCD) on TISN concentrations and to compare the effects of the nitrification inhibitors with those of IBDU, a slow release N source. Effects of the three N-amendments were compared in soil planted a potato (Solanum tuberosum L. cv. Atlantic). Treatments were combinations of N at 67, 134, and 202 kg/ha; and five N-amendments, nitrapyrin at 0.56 and 1.12 kg/ha, DCD at 5.6 and 11.2 kg/ha, and isobutylidene diurea (IBDU) applied as one-third of fertilizer N. Studies were conducted on an Arenic ochraqualf, a Grossarenic Paleudult, and Grossarenic Paleaquult. Concentrations of TISN were influenced by nitrapyrin rate in five of sixteen year- location-sampling data combinations. Of the five, all involved interactions with N rate effects. With two of these five, TISN concentration was increased by an increase in nitrapyrin rate with 67 kg N/ha, with one other, TISN concentration was decreased with an increase in nitrapyrin rate with 67 kg N/ha. Differences between nitrapyrin and DCD in their effects on TISN were few. Thus, at the rates applied in this study, the two inhibitors had similar effects on soil N. IBDU was more effective than the nitrification inhibitors, for maintaining plant available N in the rooting zone during the middle and latter portions of the growing season. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 547-565 |
| System Entry Date | 2009 Dec 17 |
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