Abstract
Two series of trials were conducted in northern bareroot forest nurseries to determine: 1) the effects of different incorporation implements and two chemical application rates on the efficacy of dazomet fumigation; and 2) soil penetration resistance in the vertical soil profile following sub-soiling by two different implements. When target pests were located > 18 cm deep, the spading machine was more effective than three different rotary tillers in reducing fungi. Mortality and disease ratings in this trial were lowest and percentages of shippable seedlings highest for the spading machine at the end of the 3+0 year. However, when target pests were < 18 cm deep, all of the implements performed equally well at the lower dazomet rate. Cone indices obtained through the vertical soil profile one year after treatment for an alternative subsoiler were much lower (in other words, decreased penetration resistance) than those obtained for the cooperating nursery's subsoiler. Importance of understanding what planned tillage events in a nursery will and will not accomplish is discussed.
Parent Publication
Keywords
fumigation,
dazomet,
soil management,
subsoiling
Citation
Juzwik, Jennifer; Kromroy, Kathryn; Allmaras, Raymond. 2002. Comparison of tillage equipment for improving soil conditions and root health in bareroot nurseries. In: Dumroese, R. K.; Riley, L. E.; Landis, T. D., technical coordinators. National proceedings: forest and conservation nursery associations-1999, 2000, and 2001. Proceedings RMRS-P-24. Ogden, UT: U.S. Department of Agriculture Forest Service, Rocky Mountain Research Station. p. 103-111
