Volume 23 No. 2 Dec 2017

Windbreaks on the Great Plains: A Historical Perspective Using GIS

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The Prairie States Forestry Program (PSFP) was initiated in 1935 to combat severe soil erosion from the Dust Bowl years. Over the course of the next 7 years, the U.S. Forest Service, working with the Works Progress Administration and the Civilian Conservation Corps, planted nearly 220 million seedlings in the Great Plains. These plantings, known as windbreaks or shelterbelts, created 18,600 miles of linear strips of trees from North Dakota through Texas (Williams 2005). Windbreaks play an important role on the landscape in the plains region. These linear plantings of trees and shrubs are designed to enhance crop production, protect structures and livestock, and benefit soil and water conservation (Figure 1). Windbreaks also provide habitat for wildlife and pollinators, sequester carbon, provide income opportunities and enhance aesthetics.

Details: Written by Todd Kellerman, USDA National Agroforestry Center; Parent Category: 2017 Vol. 23; Category: Volume 23 No. 2 Dec 2017; Published: 19 December 2017

Lessons Learned from Eight Years of Succession in an Indoor Tropical Food Forest

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The winter of 2018 will mark the 9th planting year of the 72’, near net-zero energy usage tropical greenhouse at the Central Rocky Mountain Permaculture Institute, located at an altitude of 7,200’ in the mountains of Colorado. While many aspects of a typical tropical agroforestry system apply to this tropical oasis in the snow, the controlled nature of the environment provides additional considerations, and sometimes challenges. Without dramatic weather events such as hurricanes, and wet and dry seasons as factors to work with, there is, in effect, a controlled plant laboratory, with active soils and a functioning ecosystem, allowing for research to be conducted on plant responses to isolated factors such as different guild plantings, natural fertilizers, and pruning.

Details: Written by Jerome Osentowski and Callie Maron; Parent Category: 2017 Vol. 23; Category: Volume 23 No. 2 Dec 2017; Published: 19 December 2017

Publication of an Orientation Document for the Development of Agroforestry in the Province of Quebec, Canada

Title page of the document on agroforestry development in the province of Quebec.

A working group stemming from the Agroforestry Committee of the Quebec Reference Center for Agriculture and Agri-Food (CRAAQ), a network of experts aiming at sharing of information and knowledge transfer, was set up in order to develop a strategic document for promoting agroforestry practices in the province of Québec, Canada.

Details: Written by Alain Olivier, Laval University; Parent Category: 2017 Vol. 23; Category: Volume 23 No. 2 Dec 2017; Published: 19 December 2017

Agroforestry at the Society of American Foresters National Convention

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Agroforestry was well represented at the Society of American Foresters (SAF) National Convention, which took place in Albuquerque, New Mexico from November 15-19, 2017. Highlights included an all-day agroforestry field trip, an agroforestry session with six presentations, several agroforestry-related posters, and a strong turnout for the SAF’s agroforestry working group meeting.

Details: Written by Jim Allen, Northern Arizona University; Parent Category: 2017 Vol. 23; Category: Volume 23 No. 2 Dec 2017; Published: 19 December 2017

Agroforestry Education for High School Agriculture Science: Preparing the Next Generation

With significant advances in the science of agroforestry over the last 20 years, ongoing agroforestry education programs for natural resource professionals and extension agents have fostered awareness of opportunities to provide productivity and profitability with environmental stewardship. However, agroforestry is severely underrepresented in secondary education environments (Williams 2000), where a growing number of agriculture students are exposed to agricultural focus areas that guide their life-long career paths. In Missouri, the focus state for this pilot agroforestry education project, more than half of students who are enrolled in a high school agriculture program will pursue an agricultural profession after high school (DESE 2016). Nationally, more than 70% of farm operators do not pursue a college degree, further indicating the foundational role of the high school agriculture program (USDA-ERS 2012).

Details: Written by Hannah Hemmelgarn, University of Missouri Center for Agroforestry; Parent Category: 2017 Vol. 23; Category: Volume 23 No. 2 Dec 2017; Published: 19 December 2017

Silvopasture project at the Center for Environmental Farming Systems (CEFS) in Goldsboro NC

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Contemporary agricultural systems do not fit on all landscapes in the southeastern US. Researchers at the Center for Environmental Farming Systems’ Field Research and Outreach Facility at Cherry Research Farm in Goldsboro, North Carolina discovered this when they tried to grow corn and soybean in rotation on a floodplain site with a wide diversity of soil texture and slight variations in elevation (Figure 1). During the first several years, yields were either drought-affected on the sandy hummocks and acceptable elsewhere or decimated in low-lying areas due to flood waters and excessive moisture that rotted crop roots. Fortunately, with the vision of Dr. Paul Mueller, the site was also planted with rows of trees to create a mixture of agriculture and forestry. Once trees became large enough to be pruned of their lower branches and allow people and animals to move under them, investigators transitioned the site from alley cropping to silvopasture – the intentional mixture of trees and pasture.

Details: Written by Alan Franzluebbers, USDA-Agricultural Research Service, Raleigh NC; Parent Category: 2017 Vol. 23; Category: Volume 23 No. 2 Dec 2017; Published: 19 December 2017