Project objectives from proposal:
The goal of this project is to adapt the Cornell research on semi-dwarf systems to the more intensive high density systems and measure the impact of 6 ground cover treatments between tree rows and up to 14 herbicide strategies on tree growth, tree health, and soil health.
Performance target 1: Evaluate various herbicides for number of days after application for post-emergent followup, and the number of post-emergent control applicaitons needed for the season.
Apply 14 herbicide treatments (3 replicates) in 1-yr established and 2-yr plantings in same plots as 2011. Manage plots using post-emergence herbicides as needed to hold %weed cover to <30%.
Performance target 2: Identify a prospective orchard planting site at each of 2 original farms, identify perennial weed issues, and use weed control resources for multiple commodities to address these weeds before the trees are established.
Performance target 3: Identify pros and cons of Ground cover options for between tree rows.
Manage 3 replicates of each of 6 ground cover treatments established in 2011 in newly and 1-year planting. Evaluate stand establishment, and determine growth rate and frequency of specific ground cover types.
Initiate a new set of ground cover plots at a third site.
Performance target 4: Evaluation.
Evaluate weed control in tree row.
Evaluate ground cover treatments between rows, % stand, % weeds.
Measure tree caliper growth to compare differences in treatments.
Measure soil health parameters.