In the West, pecan growers are increasingly using an orchard floor management system where a “mow strip” is maintained in the driving lanes between the tree rows, and a 6- to 8-foot wide vegetation-free strip is kept in the tree row (3 to 4 feet oneither side of the row). In conventional orchards, a combined program of preemergence and postemergence herbicides is typically used to maintain the vegetation-free strip. For this system in organic orchards, some OMRI-approved chemicals may be used, sometimes in combination with flame weeding, various mechanical controls, or mulches. Often, the floor vegetation in the mow strip consists primarily of weeds and is mown short on a regular basis. Sometimes growers will plant an intercrop or a cover crop inthe mow strip.
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