Combining slow release and conventional nitrogen fertilizer to reduce leaching and stabilize annual potato yields

Christine Landry, researcher

Christine Landry

Researcher

418 643-2380
ext 640

Contact Christine Landry

Description

Meeting nitrogen requirements mainly through the use of a highly stable form of fertilizer can minimize nitrogen losses, provide nitrogen amounts closer to the plant’s actual needs, and stabilize or increase potato yields. Using a conventional starter fertilizer makes up for the delay in nitrogen release from the slow release fertilizer in the spring.

Objective(s)

  • Minimize nitrate (NO3) leaching and stabilize yields based on crop nitrogen requirements
  • Determine:
    • What fraction of the plant’s nitrogen requirements should be met by a conventional starter fertilizer
    • Whether overall nitrogen inputs can be reduced
    • Whether all the fertilizer can be applied at planting
  • Determine the effect of the various scenarios on yield, nitrogen uptake, and residual nitrate
  • Compare revenues and costs in the different treatments

From 2017 to 2019

Project duration

Market gardening

Activity areas

Fertilizer management

Service

The fertilization strategy outlined here will help improve crop yields and the environment.

Partners

Growing Forward 2 | Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec - Innov'Action Programme | Agriculture and Agri-Food Canada

This may interest you

Potatoes
2016-2017 • Market gardening

Adapting quantitative detection methods for determining silver scurf injury thresholds both in the soil and on seed potatoes to model potential economic losses

The fungal pathogen Helminthosporium solani causes silver scurf, a disease that is hard to detect, both in the soil and on harvested potatoes.

Researcher: Richard Hogue

Read more about the project

Richard Hogue
2018-2020 • Market gardening

Evaluating the effect of seeds coated with commercial, mycorrhizal fungi inoculum on the yields of nantes carrots grown in mineral soil early in the organic transition process

Test whether or not commercial strains coated on Nantes carrot seeds can compete with native strains in the soil to colonize the host plant and, once symbiosis takes place, whether they succeed in doing a better job than the native strains during the transition to organic farming.

Researcher: Christine Landry

Read more about the project

Christine Landry
Leek moth
2015-2019 • Market gardening

Biological control of leek moth through the release of trichogramma wasps in organic leek production in Québec

This project as aimed at comparing the efficacy of two parasites (T. brassicae and T. ostriniae) on leek moth.

Researcher: Annabelle Firlej

Read more about the project

Annabelle Firlej