The effects of crimper-rolled winter rye on striped cucumber beetle populations in spaghetti squash production

Maxime Lefebvre, research assistant

Maxime Lefebvre

Researcher, Ph.D.

450 653-7368
ext 321

Contact Maxime Lefebvre

Description

The striped cucumber beetle (CRC) is the main enemy of cucurbit crops in Quebec. In addition to direct damage to seedlings and transplants, it can transmit bacterial wilt. Organic growers have very few ways to control rootworm and conventional growers mainly use neonicotinoid seed treatments. Rolled-creped rye mulch is a technique already used by many producers to control weeds and diseases. The aim of the present project is to evaluate the effectiveness of a rolled fall rye mulch on the dynamics of CRC, predators and bacterial wilt transmitted by CRC. The experiment will take place at the organic agriculture innovation platform of the Institute for Research and Development in Agro-Environment (IRDA) located in Saint-Bruno-de-Montarville. The abundance and population dynamics of the main pests (CRC and squash bugs) and main predators will be assessed. As a comparative treatment, the squash will be planted in the same way in bare soil, without mulch, under mechanical weed control. Our prediction is that CRCs will be less abundant in plots with rye and that predator populations will be more abundant. This technique has already demonstrated its effectiveness in increasing the quality of squash and reducing the presence of weeds in conventional companies. If the growers' observations are validated, organic companies would get an effective way to fight CRC.

Objective(s)

To evaluate the effect of rye mulch in reducing the pressure of CRC and other important pests.

Specific objectives :

  1. To assess the effect of rolled rye mulch on the population dynamics of CRC and other pests.
  2. To assess the effect of rolled rye mulch on predator populations.
  3. To assess the effect of rolled rye mulch on bacterial wilt occurrence and yield.

From 2021 to 2025

Project duration

Market gardening

Activity areas

Soil health, Water protection, Air quality, Organic farming

Services

Partner

Université du Québec à Montréal (UQAM)

This may interest you

2015-2019 • Market gardening

Selection and management of legume intercrops in organic vegetable production

This project proposes ways of using legume intercrops to control vegetable pests (insects, diseases, and weeds) while increasing soil productivity and quality and economic yields.

Researcher: Annabelle Firlej

Read more about the project

Annabelle Firlej
2017-2018 • Market gardening

Qu├ębec-wide potassium fertilization trial on fresh cucumber under fertigation

This project was aimed at determining potassium doses (5 doses) to apply before planting on nitrogen-fertigated cucumber crops grown on plastic mulch.

Researcher: Christine Landry

Read more about the project

Christine Landry
2019-2021 • Market gardening

A comparative study of organic fertilizers with a high, effective nitrogen to total phosphorus ratio (Neff / Ptot) as a basis for developing productive and sustainable market gardening fertilization strategies

In this study, we will test alfalfa meal pellets in a broccoli crop planted on plastic-covered irrigated mounds and we will compare them with two organic fertilizer, in addition to a control treatment in which no nitrogen is added.

Read more about the project

Christine Landry
Caroline Côté
F