Timing of Manure Addition to Grassland
Agri-Ecosystems: Effect on Yield and N Uptake.
(5454)
Authors:
A.V. Rodd* - AAFC- Nappan Research Farm J. MacLeod - AAFC- Charlottetown, PE P. Warman - NSAC- Truro, NS
R. Gordon - NSAC- Truro, NS K. McRae - AAFC- Kentville, NS
Abstract:
The evaluation of time of manure addition to grassland agri-ecosystems was
initiated after a manure management survey indicated manure was applied to lands in close proximity to barns year after year. Approximately 80% of the manure was surface applied to forage land, with application time, being equally distributed among spring, summer (after 1st cut), early fall (after 2nd cut) and late fall (early November). Even though it is a fundamental question, Beauchamp (1998) indicated that there have been surprisingly few studies on crop response to manure applied at various times throughout the year. In 1995, a 10 year project was initiated on two contrasting soil types ( a silty loam Gleyed Regosol (Typic Haplaquents)
“dykeland” and a sandy loam Gleyed Dystric Brunisol (Aquic
Dystrochrept)“upland”) to determine the effect Spring, Summer, Early Fall and Late Fall surface applications of manure have, relative to spring applied fertilizer, on grassland agri-ecosystem yield and N uptake. Multiple year applications
integrates the overall effect of various weather conditions including: wet springs, wet summers, dry summers etc. Forage yields, and N uptakes were found to be higher on the dykeland than on the upland site. Average forage yield and N uptake from 1995 to 2003 do not appear to be affected by of time of year of manure
application.
Speaker Information: A. Vernon Rodd, AAFC- Nappan Research Farm, Nappan Research Farm, Agriculture and Agri-Food Canada, Nappan, NS BOL 1CO; Phone:
(902) 667-3964; E-mail: [email protected]
Session Information: Monday, November 1, 2004, 2:00 PM-4:00 PM Presentation Start: 2:00 PM (Poster Board Number: 1950)
Keywords: manure; timing; yield; N Uptake
