Project Overview
Information Products
Commodities
- Vegetables: broccoli, cabbages, cucurbits, greens (leafy)
Practices
- Crop Production: row covers (for season extension), season extension, shade cloth
- Pest Management: biological control, cultural control, row covers (for pests)
Summary:
This project addresses the loss of yields and marketability of vegetables due to the combination of insect pest damage and weather conditions. Insect-exclusion netting offers a tool for producers to reduce pest populations without chemical intervention. However, these row covers often create microclimates of increased temperature and humidity that can decrease the germination and overall yields of heat-sensitive crops.
The Community Supported Agriculture (CSA) model is economically beneficial for farmers by providing income in the beginning of the season when start-up costs are high and yields are generally low.This partnership requires the farmers to provide an abundance of high-quality, diverse vegetables for the duration of the CSA - often spanning 18 to 20 weeks, which is often challenged by pest pressure and extreme temperatures especially in spring and fall.
In order to make small-scale vegetable farming economically viable in the Southwest with the CSA model, research is needed to determine the effectiveness of different types and combinations of insect netting and shade cloth to successfully mitigate pest damage while also balancing out in field temperatures and moisture/water retention. This project incorporates row covers and insect-exclusion netting combinations to manage pest pressure and mitigate environmental stressors of high temperature and low moisture to determine how to generate the highest yields and quality of eleven vegetable crops.
A field day was held on the farm to demonstrate best practices and findings with other farmers in the area, using the Roaring Fork Farmers and Ranchers group and the regional chapter of the Rocky Mountain Farmers’ Union to inform and educate other local producers. One presentation at a regional agricultural conference in January 2024 shared results with a broader audience.
Project objectives:
Research Objectives
Objective 1: Compare and document yield and quality of crops grown with insect-exclusion netting and/or shade cloth materials to crops grown without insect-exclusion netting and/or shade cloth.
Objective 2: Help farmers increase the marketability and profitability of produce (specific crops) by reducing average yield loss from insects, and high temperature and aridity.
Objective 3: Share our findings and practices with other vegetable producers in the Colorado River and Roaring Fork Valleys of Colorado who face similar challenges of excluding pests with row covers while also creating optimal temperature and moisture for crops in increasingly extreme growing conditions.
Objective 4: Master growing techniques using described resources and found knowledge to provide enough diversity to support a 100 member (CSA) program with chemical-free produce from June to October.
Education Objectives
Objective 1: Build awareness with local community members around the challenges of growing vegetables in the arid Southwest.
Objective 2: Host an on-farm field day for farmers to share results and knowledge gained from research project and demonstrate to other local producers best practices for incorporating shade-cloth and insect-exclusion netting.
Objective 3: Synthesize data from the study, and present knowledge gained and challenges to other local producers.
Objective 4: Create a one page project summary with a description of the crops studied and best practices (insect-exclusion netting and shade cloth combinations) that can be shared among producers and passed on to Highwater Farm staff for the 2024 and 2025 growing seasons.