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Understory Management in Organic Tree Fruits and Other Woody Perennials

Grant Information

  • Project ID: 004
  • Project Status: Complete


  • Principal Investigator(s): Granatstein, D.
  • Grant Amount: $28,723


  • Principal Investigator(s): Granatstein, D.
  • Investigator(s): Kirby, E., Lacy, L., Mullinix, K.
  • Grant Amount: $31,489
  • 2004 Progress Report


  • Principal Investigator(s): Granatstein, D.
  • Investigator(s): Kirby, E., Lacy, L., Mullinix, K., Wiman, M.
  • Grant Amount: $52,184
  • 2005 Progress Report


  • Principal Investigator(s): Granatstein, D.
  • Investigator(s): Kirby, E., Lacy, L., Mullinix, K., Wiman, M.
  • Grant Amount: $51,591
  • 2006 Progress Report


  • Principal Investigator(s): Granatstein, D.
  • Grant Amount: $52,641


Mullinix, K. and Granatstein, D. 2011. Potential nitrogen contributions from legumes in Pacific Northwest apple orchards. Intl. J. Fruit Sci. 11:74-87.

Granatstein, D., Wiman, M., Kirby, E., Mullinix, K. 2010. Sustainability trade-offs in organic orchard floor management. Acta Hort. 873:115-122.

TerAvest, D., J.L. Smith, L. Carpenter-Boggs, L.Hoagland, D. Granatstein, and J.P. Reganold. 2010. Influence of orchard floor management and compost application timing on N partitioning in organically managed apple trees. HortScience. 45:637-642.

Granatstein, D.* and E. Sanchez. 2009. Research knowledge and needs for orchard floor management in organic tree fruit systems. Intl. J. Fruit Science 9:257-281.

Wiman, M.R., E.M. Kirby, D.M. Granatstein,* and T.P. Sullivan. 2009. Cover crops influence meadow vole presence in organic orchards. HortTech 19:558-562.

Hoagland, L., Carpenter-Boggs, L., Granatstein, D.*, Mazzola, M., Smith, J., Peryea, F., and Reganold, J. P. 2008. Orchard floor management effects on nitrogen fertility and soil biological activity in a newly established organic apple orchard. Biol. Fert. Soils 45:11-18.

Granatstein, D.* and K. Mullinix. 2008. Mulching options for Northwest organic and conventional orchards. HortScience 43(1):45-50.

Lacey. L.A., D. Granatstein,* S.P. Arthurs, H. Headrick, and R.F. Fritts Jr. 2006. Use of entomopathogenic nematodes (Steinernematidae) in conjunction with mulches for control of overwintering codling moth (Lepidoptera: Tortricidae). J. Entomol. Sci. 41: 107-119.

Hoagland, L., Carpenter-Boggs, L. Granatstein, D., Mazzola, M., Peryea, F., Smith, J., and Reganold, J. 2007. Nitrogen cycling and partitioning under alternative organic orchard floor management strategies. Proceedings Western Nutrient Management Symposium, Salt Lake City, UT. 7:117-123.

Granatstein, D. 2007. Nitrogen for organic orchards. Proceedings 102nd Annual Meeting Wash. St. Hort. Assoc., Yakima, WA, Dec. 4-6, 2006. p. 58-63.

Additional Funds Leveraged

Granatstein, D., A. Groff, and P. Andrews. 2009. Increasing profitability with organic orchard floor management alternatives. WSDA Specialty Crop Block Grant. $157,526. Granatstein, D. and H. Collins. 2008. Wilbur-Ellis. Nitrogen release from organic by-products with potential fertilizer use. $5,120. Lacey, L. and D. Granatstein. 2006. Entomopathogenic nematodes for codling moth control. Becker Underwood Ltd. $5,000. Cogger, C., A. Bary, D. Granatstein, M. Ostrom. 2003. Assessing soil quality in organic management systems. USDA-SARE $107,696. Granatstein, D. and K. Mullinix. 2003. Alternative weed control in high density orchards. Washington Tree Fruit Research Commission $1500. Granatstein, D. 2003. Spray-on paper mulch for use in organic row crops. Small Planet Foods $3600. Granatstein, D. 2003. NutriSmart, a biological fertilizer. Wilbur-Ellis Co. $2200. Granatstein, D. 2003. Compost to enhance apple tree growth. Soos Creek Organics Inc. $2000. Hogue, E. and D. Granatstein. 2004. Mulching in high-density apple orchards. WA TFRC $1500.