Survey for Weeds—Dormant
By surveying weeds in early winter, you can identify weed species that escaped fall management, perennial species present, and if herbicides were used, the need to change to another herbicide, or timing of future herbicide treatments. Winter monitoring will also identify any winter species that are emerging.
Ideally tree rows are weed free, whereas weeds growing in row middles can reduce water quality problems by preventing soil erosion and water and sediment runoff to creeks and streams. However, perennial weeds are problematic and should be kept from establishing in row middles.
How to survey your orchard
Survey information collected over a period of years tells you how weed populations may change and how effective your management operations have been over the long term. By knowing which species are present, you will be able to make appropriate decisions on cultural and chemical controls.
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