Managing Nitrogen in Sugarbeets. Sugarbeet Factsheet

Factsheet outlining methods for managing nitrogen in sugarbeets.University of Guelph Ridgetown CampusUniversity of GuelphOntario Sugarbeet Growers' AssociationGovernment of CanadaAgricultural Adaptation CouncilGovernment of OntarioGrowing ForwardMichigan Sugar Compan

On-farm nitrogen tests to minimize nitrogen inputs and optimize yields in processing green peppers.

This report discusses how nitrogen effects green peppers. The small plot yields presented in this report are for comparative purposes only and may not accurately reflect commercial yields.Ontario Processing Vegetable GrowersOntario Ministry of Agriculture, Food and Rural AffairsAgri-Food Laboratories Ltd.A&L Laboratories Inc.Omstead Foods Inc.Rol-Land Farms Inc.Summer Job ServiceHuman Resources Development CanadaSummer Experience Progra

Evaluation of the value of cover crops on nitrogen cycling, soil quality, and pest management in vegetable production

The focus of this report is on nitrogen cycling and weed dynamics within the rotation, for cover crops.Ontario Processing Vegetable GrowersSoil Conservation Council of CanadaA&L Laboratories Inc.Agri-Food Laboratories Ltd

ARIA 2016: Care pathways implementing emerging technologies for predictive medicine in rhinitis and asthma across the life cycle

The Allergic Rhinitis and its Impact on Asthma (ARIA) initiative commenced during a World Health Organization workshop in 1999. The initial goals were (1) to propose a new allergic rhinitis classification, (2) to promote the concept of multi-morbidity in asthma a

Underseeding cover crops in seed corn and sweet corn to maximize biomass and ground cover

2009-2011 Research and Demonstration Final Report. Prepared for the Ontario Soil and Crop Improvement Association.Cover crops have the potential to improve water quality by minimizing erosion and nutrient losses (N and P) and increasing cropping system resiliency by protecting soil and adding organic residues. Although many Ontario vegetable growers have been using cover crops for many years, there are several crops that are harvested too late to effectively plant cover crops. Seeding or underseeding the cover crop in a standing cropmay allow for enough time for sufficient biomass accumulation to minimize N losses and minimize erosion. In addition to support from grower organizations, this project was funded through Ontario Soil and Crop Improvement Association under their Nutrient Management BMP Demonstration Grant for demonstration trials and research plots.In 2009-2011, we conducted a) 12 strip trials in grower fields comparing with and without alfalfa underseeding with 6 replicates, b) 4 small-plot replicate research trials comparing the impact of cover crop type (alfalfa, oilseed radish, blend of 4 cover crops) and sowing date (early–July and late–August) and c) 4 demonstration strips with at least 13 different cover crops underseeded in sweet corn and seed corn.Based on three years of demonstration and research trials, underseeding alfalfa or other cover crops in processing sweet corn is not recommended but is recommended in seed corn. None of the cover crops tested lowered seed corn yield, test weight or 1000 kernel weight. Although not statistically different, seed corn yield was numerically higher withthan without alfalfa. This was observed in the replicated small-plot research trials and in the replicated grower strip trials. Oat yield in the following year was numerically higher with cover crops than without covers, but there was no statistical difference. All results indicate a low likelihood of negatively impacting yield. Tested in 2011 at two sites, alfalfa screenings grew well and would be a cost effective method of establishing a cover crop in seed corn. Overall, undersowing alfalfa or other cover crops that over-winter is an effective strategy to provide green cover in the non-cropping season.Seed Corn Growers of OntarioOntario Processing Vegetable GrowersOntario Soil and Crop Improvement AssociationOntario Ministry of Agriculture, Food and Rural Affair

Use of a Nitrogen Budget to Predict Nitrogen Losses in Processing Butternut Squash with Different Nitrogen Fertilization Strategies

With rising input costs and environmental concerns, growers are seekingmethods to minimize nitrogen (N) inputs and off-field N losses while maintaining crop yields. Field studies on processing butternut squash (Cucurbita moschata Duchesne ex Poir.) were conducted in 2004–2007 at 11 locations in Ontario, Canada, to determine the optimal N rate and estimate potential N losses. Preplant broadcast ammonium nitrate was applied at five rates between 0 and 220 kg N/ha. In contrasting years (i.e., cool/wet versus warm/dry versus average), 64% of sites were nonresponsive to N fertilizer as indicated by no differences in marketable squash yield. In responsive sites, the most economical rate of N (MERN) was between 105 and 129 kg N/ha of N fertilizer, indicating that the Ontario-recommended rate of 110 kg N/ha seems appropriate for responsive sites. At 110 kg N/ha, no yield advantage resulted from using a controlled-release N(CRN) or split-applying ammonium nitrate at preplant and vine elongation at 65 + 45 kg N/ha, respectively, compared with the same amount applied preplant. Apparent N losses(N inputs – N outputs) at harvest were 83 and 29 kg N/ha greater at a fertilizer application rate of 220 kg N/ha than at 0 and 110 kg N/ha, respectively. At 110 kg N/ha, crop removal balance and apparent N loss calculations suggest relatively low risk of N loss from the field during the growing season and after harvest, respectively. However, environmental and economical risks would be minimized if nonresponsive sites could be identified before N fertilizer application.Ontario Ministry of Agriculture, Food and Rural AffairsAgri-Food Laboratories Ltd.A&L Canada Laboratories Inc.Ontario Processing Vegetable Grower

Impact of Cover Crops and Field Corn Stover Removal on Squash Yield

2013 Research ReportThe goal of the research was to evaluate the effect of field corn stover removal and the role of cover crops on soil and crop productivity.Ontario Processing Vegetable GrowersOntario Ministry of Agriculture and FoodOntario Ministry of Rural Affair

On-farm nitrogen tests to minimize nitrogen inputs and optimize yields in vegetable crop production.

This report discusses how nitrogen effects vegetable crops. The small plot yields presented in this report are for comparative purposes only and may not accurately reflect commercial yields.Ontario Processing Vegetable GrowersOntario Ministry of Agriculture and FoodAgri-Food Laboratories Ltd.A&L Laboratories Inc.Soil and Crop Improvement AssociationSoil Conservation Council of CanadaOmstead Foods Inc.Philom Bios Inc.Rol-Land Farms Inc.Summer Job ServiceHuman Resources Development CanadaSummer Experience Progra

Literature Review and Recommendations: Assessing methods to improve nitrogen use efficiency in potatoes and selected cole crops.

A research trial on the development of a vegetable production systems using nitrogen and different crop rotations should satisfy agronomic, economic, and environmental objectives.Ontario Ministry of Agriculture and Foo