HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Related articles in JEQ Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Rashid, M. T. Articles by Voroney, R. P. Search for Related Content PubMed PubMed Citation Articles by Rashid, M. T. Articles by Voroney, R. P. Agricola Articles by Rashid, M. T. Articles by Voroney, R. P. Related Collections Industrial Waste Maize Nutrient Management Plant Nutrition Nitrogen

TECHNICAL REPORTS

Waste Management

Nitrogen Fertilizer Recommendations for Corn Grown on Soils Amended with Oily Food Waste

Land Resource Science, Univ. of Guelph, Guelph, ON, Canada N1G 2W1

^* Corresponding author (trashid{at}uoguelph.ca)

Received for publication January 17, 2005. Soil and plant indices of soil fertility status have traditionally been developed using conventional soil and crop management practices. Data on managing N fertilizer for corn (Zea mays L.) produced on soils amended with C-rich organic materials, such as oily food waste (OFW) is scarce. Identification of a reliable method for making N fertilizer recommendations under these conditions is imperative. The objective of this research was to evaluate soil NO₃–N (0- to 30-cm depth) at preplant and presidedress (PSNT) times of sampling for predicting N requirements for corn grown on fields receiving OFW. Experiments were conducted at two locations in Ontario, Canada over 3 yr (1995–1997) where OFW was applied at different rates (0, 10, and 20 Mg ha^–1), times (fall and spring), and slope positions (upper, mid, and lower) within the same field. Presidedress soil NO₃–N contents were higher compared with preplant time of sampling under all OFW management conditions. Corn grain yields were significantly affected by OFW management and N fertilizer application rates. Maximum economic rate of N application (MERN) varied depending on OFW management conditions. Presidedress soil NO₃–N contents had a higher inverse relationship with MERN (r = –0.88) compared with soil NO₃–N at preplant (r = –0.74) time of sampling. A linear regression model (Y = 180.1 – 8.22 NO₃–N at PSNT) is proposed for making N fertilizer recommendations to corn grown on soils amended with OFW in this geographical region.

Abbreviations: FOG, fat, oil and grease • MERN, maximum economic rate of nitrogen • OFW, oily food waste • PSNT, presidedress soil nitrate N test

Related articles in JEQ:

This Issue in Journal of Environmental Quality

JEQ 2005 34: v. [Full Text]