Influence of calcium chloride and ammonium thiosulfate on bermudagrass uptake of urea nitrogen

Autor:	W. B. Anderson, J. J. Sloan
Rok vydání:	1998
Předmět:	inorganic chemicals Soil Science chemistry.chemical_element Soil chemistry Ammonium thiosulfate engineering.material Ammonia volatilization from urea Nitrogen chemistry.chemical_compound chemistry Agronomy Loam engineering Urea Cation-exchange capacity Fertilizer Agronomy and Crop Science
Zdroj:	Communications in Soil Science and Plant Analysis. 29:435-446
ISSN:	1532-2416 0010-3624
DOI:	10.1080/00103629809369956
Popis:	Calcium chloride (CaCl2) and ammonium thiosulfate (ATS) have demonstrated an ability to inhibit urea hydrolysis and NH3 volatilization. The objective of this experiment was to determine the effect of rainfall and soil drying on the ability of CaCl2 and ATS to increase bermudagrass nitrogen (N) uptake from surface‐applied urea. Urea fertilizer, labeled with 15N and amended with CaCl2 or ATS, was surface‐applied to bermudagrass sod‐cores from Ships clay (C) and a Lufkin fine sandy loam (fsl) soils. Bermudagrass sod‐cores were subjected to either low or high rainfall regimes beginning seven days after fertilizer applications. After one month, bermudagrass was harvested and analyzed for total N and 15N content. Calcium chloride significantly increased bermudagrass N use efficiency (NUE) of surface applied urea by 33 to 47% on the Lufkin fsl, but had little effect on the Ships c. Apparently, CaCl2 is most effective on coarse textured soil with low cation exchange capacity (CEC). Simulated rainfall had...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e47679c05ad960e5c7e425e32309636 https://doi.org/10.1080/00103629809369956 Zobrazit plný text záznamu