With the challenges presented by traditional farming methods and the urgent demand to sustain a growing global population, it is evident that we must rapidly innovate our food production and harvesting techniques. Fortunately, organizations like The Land Institute are dedicated to transforming the agricultural landscape by advocating for perennial grain crops in lieu of annual varieties, promoting a more sustainable agricultural model.
“The Land Institute is committed to developing comprehensive perennial grain agricultural systems featuring crops such as cereals, legumes, and oil seeds,” explains Tammy Kimbler, the Chief Communications Officer at The Land Institute.
The shortcomings of the current agricultural framework
Traditional farming often emphasizes intensive monoculture practices, utilizing heavy machinery that depends heavily on fossil fuels, along with pesticides, antibiotics, and nitrogen-rich fertilizers to maximize yields. This methodology is detrimental, leading to climate change, degradation of soil health, and environmental contamination.
“Transitioning to perennial crops must be feasible for farmers from ecological, financial, holistic, and sociocultural perspectives,” Kimbler asserts. “A significant drawback of industrial agriculture’s focus on monocropping is the limited variety of crops.”
In addition to environmental concerns, the current agricultural practices present grave public health hazards:
- Frequent use of antibiotics in livestock farming contributes to the rise of antibiotic-resistant bacteria in humans.
- The use of pesticides, nitrates, and phosphates threatens water quality in both urban and rural communities.
- Emissions leading to greenhouse gases and pollution impair air quality and exacerbate climate change.
- Exposure to harmful chemicals increases the risk of injury and chronic health issues among farmworkers.
The advantages of perennial grains
Perennial grain crops present a sustainable answer to the problems linked with modern farming. “Inherently, perennial plants are regenerative as they only need to be planted once and naturally regenerate,” states Kimbler. “The process does not involve replanting or tilling, thus allowing the soil to remain undisturbed.” These crops have numerous benefits over their annual counterparts:
- Enhanced resilience to extreme weather conditions.
- Prevention of soil erosion and improved soil health.
- Better retention of nutrients, enhanced carbon capture, and improved water absorption.
- Mitigation of climate change effects.
- Increased food and water security.
Moreover, they offer financial predictability for farmers by minimizing the need for costly agricultural inputs and reducing ongoing expenses associated with annual planting and soil management.
Different varieties of perennial grains
The Land Institute has established an international network of perennial crops, legumes, and oilseeds being cultivated in various regions, including the U.S., China, Europe, South America, Australia, and sub-Saharan Africa:
- Kernza®: The trademark for a cultivated perennial wheatgrass grain developed by The Land Institute and is currently grown across Europe.
- Sorghum: A tropical grass known for its high seed yield, predominantly grown in sub-Saharan Africa.
- Wheat: Hybrid varieties are produced by combining annual durum wheat with wheatgrass species in North America.
- Rice: The Land Institute has supported Yunnan University in China to develop a perennial rice strain, highlighted in a 2022 study published in the journal Nature Sustainability.
- Oilseeds: The domestication of Silphium integrifolium aims to replace traditional annual sunflower and soybean oilseed crops.
- Legumes: Perennial legumes boost soil fertility while providing protein-rich seeds for human consumption.
Reasons to cultivate perennial grain crops
Anne Schwagerl, Vice President of the Minnesota Farmers Union (MFU), has been incorporating The Land Institute’s Kernza® perennial grain into her farming practice since 2020.
Kernza® has effectively fortified her soil against erosion while enhancing its resilience during extreme weather, diversifying her farming enterprise and mitigating the risks posed by climate variability.
This grain variety nurtures the soil through robust root systems, regulates water runoff, and enhances water permeability, all while allowing for a harvest that she can sell within the emerging small grain market.
Perennial grains represent a sustainable remedy to the challenges of contemporary agriculture. Transitioning from conventional practices to a perennial-focused approach appears to be the most viable path for achieving a sustainable food future.
The Land Institute advocates for ecological intensification, leveraging natural processes to enhance soil fertility, pest management, and minimize the loss of soil, nutrients, and organic materials. This approach replaces artificial inputs like pesticides, herbicides, and synthetic fertilizers, while boosting food production and supporting biodiversity.
Experts at The Land Institute assert that perennial grain crops can enable levels of ecological intensification that have eluded contemporary agricultural methods, without relying on the chemical inputs that have driven yield increases in industrial farming over the past century.
“Ecological intensification nurtures an ecosystem. It requires selecting appropriate plant varieties and cultivating them in optimal combinations suited to local soil types and ecologies to create a sustainable and regenerative farming system,” states Kimbler. “The soils that have historically provided sustenance in North America are deteriorating. We must redesign our agricultural practices to be more ecologically sound and aligned with natural processes.”
