Author: Merlyn Milfred Larson
Publisher:
ISBN:
Category : Arizona fescue
Languages : en
Pages : 18
Book Description
Root Competition Between Ponderosa Pine Seedlings and Grass
Author: Merlyn Milfred Larson
Publisher:
ISBN:
Category : Arizona fescue
Languages : en
Pages : 18
Book Description
Publisher:
ISBN:
Category : Arizona fescue
Languages : en
Pages : 18
Book Description
Root Competition Between Ponderosa Pine Seedlings and Grass
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Root Competition Between Ponderosa Pine Seedlings and Grass
Author: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
USDA Forest Service Research Paper RM.
Author: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 646
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 646
Book Description
Competing Vegetation in Ponderosa Pine Plantations
Author: Philip M. McDonald
Publisher:
ISBN:
Category : Plant competition
Languages : en
Pages : 32
Book Description
Planted ponderosa pine (Pinus ponderosa Dougl. ex Laws. var. ponderosa) seedlings in young plantations in California are at a disadvantage compared with competing shrubs, forbs, and grasses. In many instances, roots of competing plants begin expanding and exploiting the soil earlier and in greater numbers, thereby capturing the majority of available resources and lowering pine survival and growth. Competition thresholds or "how much is too much?" are: for treatments where a cleared radius is prescribed, no weeds are acceptable within the space needed for maximum growth of pine seedlings during the establishment period; for treatments involving the entire area, crown cover values of 10 to 30 percent seem to be the level beyond which shrub competition significantly affects pine growth. Methods for preparing the site, which include mechanical and chemical methods, use of fire, and combinations of treatments, show the interaction of site and ensuing vegetation. Techniques for controlling competing vegetation from seed include preventing such plants from getting started by use of preemergent herbicides or mats (collars). To prevent sprouting, hardwood trees and large shrubs can be pushed over, thereby getting the root crown out of the ground, or if still in the soil, grinding it out with a machine. Once present, the effect of weeds from seed can be minimized by grubbing or spraying when young, by grazing plants with cattle or sheep, or by introducing plants of low competitive ability. Once sprouting weeds are present, their effect can be minimized by spraying with chemicals, or if palatable, by grazing with cattle or sheep. Costs range from as low as $10 per acre ($25/ha) for aerially applying herbicides to $711 per acre ($1757/ha) for grinding out tanoak stumps.
Publisher:
ISBN:
Category : Plant competition
Languages : en
Pages : 32
Book Description
Planted ponderosa pine (Pinus ponderosa Dougl. ex Laws. var. ponderosa) seedlings in young plantations in California are at a disadvantage compared with competing shrubs, forbs, and grasses. In many instances, roots of competing plants begin expanding and exploiting the soil earlier and in greater numbers, thereby capturing the majority of available resources and lowering pine survival and growth. Competition thresholds or "how much is too much?" are: for treatments where a cleared radius is prescribed, no weeds are acceptable within the space needed for maximum growth of pine seedlings during the establishment period; for treatments involving the entire area, crown cover values of 10 to 30 percent seem to be the level beyond which shrub competition significantly affects pine growth. Methods for preparing the site, which include mechanical and chemical methods, use of fire, and combinations of treatments, show the interaction of site and ensuing vegetation. Techniques for controlling competing vegetation from seed include preventing such plants from getting started by use of preemergent herbicides or mats (collars). To prevent sprouting, hardwood trees and large shrubs can be pushed over, thereby getting the root crown out of the ground, or if still in the soil, grinding it out with a machine. Once present, the effect of weeds from seed can be minimized by grubbing or spraying when young, by grazing plants with cattle or sheep, or by introducing plants of low competitive ability. Once sprouting weeds are present, their effect can be minimized by spraying with chemicals, or if palatable, by grazing with cattle or sheep. Costs range from as low as $10 per acre ($25/ha) for aerially applying herbicides to $711 per acre ($1757/ha) for grinding out tanoak stumps.
Planters' Notes
Author:
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 428
Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Publisher:
ISBN:
Category : Tree planting
Languages : en
Pages : 428
Book Description
Some no. include reports compiled from information furnished by State Foresters (and others).
Agriculture Handbook
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 688
Book Description
Set includes revised editions of some issues.
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 688
Book Description
Set includes revised editions of some issues.
Response of grass species to tree harvesting in singleleaf pinyon-Utah juniper stands
Author: Richard L. Everett
Publisher:
ISBN:
Category :
Languages : en
Pages : 876
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 876
Book Description
Final Environmental Impact Statement on Standards and Guidelines Rocky Mountain Regional Guide
Author:
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 392
Book Description
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 392
Book Description
Rocky Mountains Regional Plan Standards and Guidelines
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 384
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 384
Book Description