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M. Gabriela Buamscha, James E. Altland, Dan M. Sullivan, Donald A. Horneck and James Cassidy

Zn, just slightly lower than bark amended with Micromax (Scotts Co., Marysville, OH) and Ironite (Ironite Products Co., Scottsdale, AZ). Fresh and aged DFB are used commonly in Oregon container nurseries. Fresh bark refers to material sold soon

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James E. Altland, James S. Owen Jr., Brian E. Jackson and Jeb S. Fields

is not completely stable. A recent study concluded that physical properties will stabilize (degree of change lessened considerably) after 6 months of aging ( Kaderabek, 2017 ). Buamscha et al. (2007) described fresh bark as material sold soon after

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M. Gabriela Buamscha, James E. Altland, Dan M. Sullivan, Donald A. Horneck and John P.G. McQueen

following descriptions of the three aforementioned bark types. Fresh bark refers to material sold soon after debarking from a tree, grinding, and screening to an appropriate particle size. Aged bark refers to material that goes through the same preparation

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thrived under cooler weather. Douglas Fir Bark Age Influences Growth of Potted Geraniums Fresh and aged douglas fir bark commonly are used by west-coast U.S. nursery growers. It is thought that fresh bark requires additional nitrogen (N) fertilizer to

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Jeffrey G. Williamson and Jonathan H. Crane

layer. This substrate has marginal water- and nutrient-holding capacities, especially when new or fresh bark is used. Together, the shallow root system and the physical and chemical properties of pine bark create a need for frequent irrigation and

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M. Gabriela Buamscha, James E. Altland, Daniel M. Sullivan and Donald A. Horneck

.7 to 5.7. Nonamended plants in fresh bark were smaller than amended ones at the end of Expt. 2. Micronutrient nutrition cannot explain these growth differences for two reasons: 1) compost and nonamended plants had similar foliar nutrients levels

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H.F. Abouziena, O.M. Hafez, I.M. El-Metwally, S.D. Sharma and M. Singh

, 2001 ). The fresh bark of conifers, oak ( Quercus spp.), and rape ( Brassica napus L.) straw gave good control of weeds when they were used as mulches under apple ( Malus domestica Borkh.) trees ( Weibel and Niggli, 1990 ). Following straw mulch

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Andrew G. Ristvey, John D. Lea-Cox and David S. Ross

treatments. An immediate foliar and substrate analysis revealed a high concentration of manganese (Mn) in both leaves and substrate. It is possible that the Mn originated in the pine bark used in the substrate. Some sources of fresh bark have been documented