This publication provides the first public domain and practical step-by-step guide on how to do seed pelleting, along with the list of materials and equipment needed. These instructions and materials will help scientists develop seed coating technologies capable of overcoming logistical and biological barriers to the more effective use and deployment of native seed across the world while enabling the native seed industry to improve seed-based restoration.
A Dutch, a French and an Irishman walk into a German native seed farm.
That’s quite a good start for a joke based on national stereotypes. But when the Dutch, French and Irishman are followed by the Scottish, Spanish, Danish, German, Italian, English, Swedish, Czech, Polish, Swiss, Austrian and a Portuguese (on crutches) the joke might be getting a bit out of hand. And they’re not visiting just one farm. They’re on a mission to fit as many native seed companies as possible in a super tight five days schedule across most of Germany, and Switzerland.
The sagebrush biome in western North America (Fig. 1) is experiencing degradation principally from increased frequency of disturbances and the displacement of sagebrush, primarily big sagebrush (Artemisia tridentata), and other native shrubs, forbs, and grasses by invasive species. This process has resulted in the loss of flora and fauna (e.g., greater sage-grouse, Centrocercus urophasianus) that depend on these ecosystems. Restoration of sagebrush ecosystems, either by seeding or planting nursery stock of sagebrush and other native plants, is our best defense to reduce the expansion of invasives and improve degraded lands.
The White Carpathian Mountains in the southeast of the Czech Republic, Central Europe, host extremely species-rich grasslands. Unfortunately many of them were destroyed in the second half of the 20th century. Since 1990, however, a large area of arable land has been converted to grasslands, partly by applying a regionally produced seed mixture.
The White Carpathian grasslands situated in the Czech Republic, Central Europe, belong to the most species-rich grasslands worldwide (Wilson et al. 2012) and harbour many rare and endangered plant and animal species, especially vascular plants and insects (Jongepierová 2008; Jongepier & Jongepierová 2009). The current area of White Carpathian species-rich grassland sites amounts to 4,000 hectares (15.4 sq. mi).
The Restaura Cerrado restoration project began in 2010, lead by Chico Mendes Institute for Biodiversity Conservation (ICMBio) on a 300 ha tract of the Chapada dos Veadeiros National Park. The project aim was to develop efficient techniques for restoring grasslands and savannas on abandoned grazing lands. Historically, these areas underwent almost complete loss of native vegetation and were replanted with exotic forage grasses, which still dominate most sites. These areas are largely neglected in Brazil’s restoration efforts. Of the few plant recovery efforts that took place, most were actually afforestation plantings, in which seedlings of forest tree species are planted in habitats where they would not occur naturally instead of reestablishing native plant communities. To change this approach and foster the return of the native plant communities, Restaura Cerrado set out to test a variety of methods for direct seeding native grasses, shrubs, and forbs – the propagation of which was previously unknown. Beginning with a single investment to serve as start-up capital, the group was able to leverage additional funds and catalyze research partnership between ICMBio, University of Brasília, Rede de Sementes do Cerrado (Cerrado Seeds Network) and Embrapa (Brazilian Agriculture and Animal Husbandry Research Enterprise).
Haiti, often featured in news around the world for ongoing humanitarian crises, boasts a rich natural history that is both intertwined with, and threatened by, those crises. This mountainous country has suffered from continuous landscape degradation for over 200 years. Long-term exploitation of natural resources, whether for export or to support charcoal production for household energy needs has resulted in widespread deforestation. Lack of government infrastructure coupled with uncoordinated efforts by NGOs has led to this becoming a persistent condition. The loss of forests has led to severe soil erosion on Haiti’s mountain slopes, reducing agricultural productivity and creating massive flooding and landslides. Despite the magnitude of challenges, many Haitians are organizing to improve landscape conditions through grassroots rehabilitation and restoration efforts. Hope for a better future builds as community-based projects work toward reforesting Haiti’s slopes and building more sustainable ecosystems and communities.
Indeterminately maturing, wind-dispersed wildflower seeds can be difficult to effectively harvest to maximum yields using traditional equipment. We modified a Flail-Vac Seed Stripper by mounting heavy loops of chain to the front to provide agitation of the floral canopy to disarticulate seed from the flowers of Machaeranthera canescens. This allowed for multiple, non-damaging harvests that collected primarily ripe seed that was ready to shatter. We saw a 5 fold increase in seed yields compared to those obtained with a standard Flail-Vac and a significant reduction in seed processing time compared to our previous harvest experience.
The first symposium dedicated to native seeds in dryland restoration organised by INSR and the Kuwait Institute for Scientific Research (KISR) was held in November in Kuwait City. With almost 200 delegates from some of the most impressive dryland regions of the world from the Sudan to the Sahara to the Australian deserts, the three day meeting and field trip was an inspiring event as scientists and practitioners shared the latest research and technologies for saving and restoring the world’s drylands.
The Aberdeen Plant Materials Center uses a “pop test” to get an approximation of seed viability during the seed cleaning process by sprinkling a small number of seeds on a hot plate and counting the number that pop. If the percentage of popped seed is high enough, usually above 90%, we know the cleaning system is doing a good job of removing empty or shriveled seed. If the popped percentage is low, we can adjust the air-flow and remove more light seed.
Picture Colorado. What comes to mind? For most people, it’s the soaring, majestic peaks of the Rocky Mountains. However, the alpine ecosystem constitutes just one of Colorado’s six major vegetation zones. The state’s rich floral diversity is distributed throughout multiple systems, including shortgrass steppe, shrub steppe, pinon-juniper woodland, montane forest, subalpine forest, and alpine. Of Colorado’s 2,797 native plant species, 525 (16%) are rare, and 90 (2.6%) are rare endemics (see all rare Colorado species here). All of these taxa are at risk of decline as a result of multiple, interacting factors.