Blueberries, Highbush: Introduction
Excerpt from 2010-2011 Chapter 14, Publication 75,
Guide to Weed Control, Order
this publication
Introduction
Site Preparation Before Planting - See Chapter 6, Preplant
Weed Control, page 81.
Cultural Weed Control - see Cultural Weed Control in
Berry Crops, page 249.
Mulching:
Biodegradable mulch could be used for weed control within the plant row.
Sawdust mulch will assist in weed control if it is applied early in the
season before the weed seeds germinate. Apply sawdust 5 cm thick. The
mulch will not prevent the germination of weed seeds that may blow onto
the surface of the mulch.
In subsequent years, the organic matter in the mulch may tie up and thus
reduce the effectiveness of certain residual herbicides.
The nitrogen requirements of the crop will change as the mulch is degraded.
Initially nitrogen will be consumed by micro organisms, thus necessitating
higher rates of nitrogen fertilizer. Later, as the sawdust is degrading,
nitrogen will be released and the crop may require less nitrogen fertilizer
than an unmulched crop. It may take 2 years or more for sawdust mulch
to significantly decompose. Adjust fertilizer rates according to mulch
breakdown, plant growth and leaf nutrient analysis results.
Recommended rates per hectare or per acre refer to area actually
treated with herbicide.
CAUTION: - Simazine, DEVRINOL and SINBAR residues, high
enough to harm many crops, may persist for several years after removal
of the planting.
Related Links
