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Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2010 → REHABILITATION OF A SALT-DESERT SHRUB COMMUNITY : HERBACEOUS RESPONSE TO SHRUB REMOVAL AND ESTABLISHMENT OF FORAGE KOCHIA AND OTHER PLANT SPECIES

United States Department of Agriculture (USDA) 2010

REHABILITATION OF A SALT-DESERT SHRUB COMMUNITY : HERBACEOUS RESPONSE TO SHRUB REMOVAL AND ESTABLISHMENT OF FORAGE KOCHIA AND OTHER PLANT SPECIES

Salt-Desert Shrub

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : REHABILITATION OF A SALT-DESERT SHRUB COMMUNITY : HERBACEOUS RESPONSE TO SHRUB REMOVAL AND ESTABLISHMENT OF FORAGE KOCHIA AND OTHER PLANT SPECIES

Identification : NEV05356

Pays : Etats Unis

Durée : Jul 1, 2010 à Jun 30, 2014

Mots clés : salt-desert shrub community rehabilitation using shrub removal andpfd7 to enhance the understory plant community. assessment of forage kochia and other plant species for rehabilitation purposes within the salt-desert shrub type

Partenaire : UNIVERSITY OF NEVADA RENO,NV 89557

Objectifs
The goals of this project are to determine the potential of shrub removal, reduction of annual grass after disturbance, and seeding of forage kochia and grasses for rehabilitation of Great Basin salt-desert shrub communities. Immigrant forage kochia, experimental forage kochia germplasm, and selected grasses (crested and Siberian wheatgrass, intermediate and tall wheatgrass, Russian wildrye, Basin wildrye, creeping wildrye, wildrye hybrids, salt grass, and alkali sacaton) will be compared for their ability to establish, persist, and act as green fuel breaks. The objectives of this project are to determine : 1. The influence of shrub removal on diversity and abundance of herbaceous species and soil nutrient and water availability. 2. The effectiveness of Pseudomonas fluorescens strain D7 (Pf D7) and imazapic (Plateau)applications to limit annual grass invasion following shrub removal. 3. The establishment and persistence of forage kochia and several grasses. 4. If forage kochia will expand beyond the seeded area. 5. Plant traits that enhance seedling establishment and persistence, and the most efficient seeding protocol for the salt desert ecosystem. Tentative Schedule : FY 2011 : Shrub removal study : Plot layout, collect baseline vegetation data, remove shrubs and apply imazapic and Pf D7. Build fence around both locations. Seeding Study : Install weather stations. Start space-plants (3-4,000 specimens) in greenhouse. Build fence around both locations. Conduct site preparation (roto-tilling, herbicide application). Plant space-plants and seeded trials. FY 2012 : Shrub removal study : Collect vegetation and soil data. Seeding Study : Take seedling establishment data on seeded trials at both sites. Take forage samples for moisture content. FY 2013 : Shrub removal study : Collect vegetation and soil data. Assess frequency of future data collection. Analyze data and begin working on publications. Seeding Study : Collect plant persistence data, forage and seed yield data on seeded and spaced-plant trials. Conduct seed threshing and deep seeding evaluation. Conduct forage quality. FY 2014 : Shrub removal study : Submit manuscripts for peer-reviewed publication. Seeding Study : Collect plant persistence data, forage and seed yield data on seeded and spaced-plant trials. Conduct seed threshing and deep seeding evaluation on selected grasses. Conduct forage quality. Begin writing manuscripts for submission to a peer-reviewed journal.

Présentation : USDA

Page publiée le 12 octobre 2015, mise à jour le 9 novembre 2017