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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 30, Number 3 (1979) → Correction of Humus Deficiency in Nursery Soils by Direct Application of Alder Sawdust

Correction of Humus Deficiency in Nursery Soils by Direct Application of Alder Sawdust

A critically important problem frequently encountered in the production of tree planting stock is the maintenance of organic matter in nursery soils. Outside sources of organic matter are seldom readily available or effective without preliminary nutrient additions and subsequent fermentation. In consequence, the present search aims to discover a material which, in combination with a simple treatment, would rapidly reduce its harmful C/N ratio and permit its direct application to nursery soils. The authors surmised that sawdust of alder, a nitrogen-fixing species, may possess properties answering the requirements of nursery soils. They conducted trials under greenhouse conditions using finely ground sawdust of red alder, Alnus rubra Bong.


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Author(s): Jaya G. Iyer, Frank E. Morby

Publication: Tree Planters' Notes - Volume 30, Number 3 (1979)

Section: general

Volume: 30

Number: 3