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A case study review of wood ash land application programs in North America, TAPPI Journal February 2021
ABSTRACT: Several regulatory agencies and universities have published guidelines addressing the use of wood ash as liming material for agricultural land and as a soil amendment and fertilizer. This paper summarizes the experiences collected from several forest products facility-sponsored agricultural application programs across North America. These case studies are characterized in terms of the quality of the wood ash involved in the agricultural application, approval requirements, recommended management practices, agricultural benefits of wood ash, and challenges confronted by ash generators and farmers during storage, handling, and land application of wood ash.Reported benefits associated with land-applying wood ash include increasing the pH of acidic soils, improving soil quality, and increasing crop yields. Farmers apply wood ash on their land because in addition to its liming value, it has been shown to effectively fertilize the soil while maintaining soil pH at a level that is optimal for plant growth. Given the content of calcium, potassium, and magnesium that wood ash supplies to the soil, wood ash also improves soil tilth. Wood ash has also proven to be a cost-effective alternative to agricultural lime, especially in rural areas where access to commercial agricultural lime is limited. Some of the challenges identified in the review of case studies include lengthy application approvals in some jurisdictions; weather-related issues associated with delivery, storage, and application of wood ash; maintaining consistent ash quality; inaccurate assessment of required ash testing; potential increased equipment maintenance; and misconceptions on the part of some farmers and government agencies regarding the effect and efficacy of wood ash on soil quality and crop productivity.
Journal articles
Machine Vision Applications Using Binary and Grayscale Morph
Machine Vision Applications Using Binary and Grayscale Morphology, 1994 Engineering Conference Proceedings
Journal articles
Hydrodynamic Pressure Generated by Doctoring in Blade Gap Fo
Hydrodynamic Pressure Generated by Doctoring in Blade Gap Formers, 1999 Engineering Conference Proceedings
Journal articles
Making a case for small paper machines, TAPPI JOURNAL, April 2000, Vol. 83(4)
Making a case for small paper machines, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Incremental tons - to make or not to make, that is the question, TAPPI JOURNAL, April 2000, Vol. 83(4)
Incremental tons - to make or not to make, that is the question, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Prevention of core bursts, creping, and ribbons on jumbo rolls, TAPPI JOURNAL, April 2000, Vol. 83(4)
Prevention of core bursts, creping, and ribbons on jumbo rolls, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
High-energy, self-cleaning filtration system, TAPPI JOURNAL, April 2000, Vol. 83(4)
High-energy, self-cleaning filtration system, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
New findings of entrained air and dissolved gases in pm wet end: mill case study, TAPPI JOURNAL, April 2000, Vol. 83(4)
New findings of entrained air and dissolved gases in pm wet end: mill case study, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Effects of white-water closure on the physical properties of linerboard, TAPPI JOURNAL, April 2000, Vol. 83(4)
Effects of white-water closure on the physical properties of linerboard, TAPPI JOURNAL, April 2000, Vol. 83(4)
Journal articles
Development and validation of an improved drainage testing, TAPPI JOURNAL, April 2000, Vol. 83(4)
Development and validation of an improved drainage testing, TAPPI JOURNAL, April 2000, Vol. 83(4)