Pre-Emergent Herbicide for Louisiana Commerical and Small Vegetable Gardens

Angela Myles, Guy, Jennifer H.  |  2/5/2014 9:34:55 PM

Commercial soil preparation.

Ahmad Robertson, Assistant ANR Agent and Steve Holmes small farmer preparing soil.

Transplants for small garden.

Producing vegetables is a favorite pastime for many people, homegrown vegetables have better flavor because they are harvested closer to their peak ripeness. Gardening provides a means of exercise, recreation and therapy. There is complete joy in watching a small seed develop into a delicious treat.

Recommendation:
I recommend using dacthal w-75 is a 75% percent wettable powder formulation for use in pre-emergence application for control of crabgrass and other annual grasses and certain broadleaved weeds on mineral soils in vegetables, strawberries, agronomic crops, ornamentals and turf.

Pre-plant Incorporation:
Dacthal W-75 can be sprayed on the soil surface and then incorporated into the soil using a disc harrow or related tilling equipment. Avoid application of this product when heavy rain is in the forecast.

Soil Preparation:
Prior to making application the soil should be cultivated to provide a weed-free and uniform surface since Dacthal 75 herbicide is effective only when applied before weed seed germination occurs.

Allow 2 weeks before you incorporate your transplanted plants in your vegetable garden.

Transplant Production:
A transplant is affected by factors such as temperature, fertilization, water, and spacing. A good transplant is one that has been grown under the best possible conditions. Greenhouses or hotbeds.

Commercial Plant-growing mixes:
Media formulations will produce high-quality transplants when used with good management practices. (Ready-to-use Optimum water retention).

Treatments of Flats:
Flats used in the production of transplants should be new to avoid damping-off and other disease problems. If flats are to be reused, they should be thoroughly cleaned after use and completely submerged in a household bleach solution for 5 minutes. (Bleach)

Plant Containers:
There are a wide variety of containers available for starting seeds for transplants, most growers start seeds either in flats or in a cell packs.

Seed Germination:
Seed that is sown in flats to be pricked out at a later date should be germinated in vermiculite (horticultural grade, coarse sand size) or a plug growing mix.

However it is recommended that no fertilizer be included in the mix and avoid fertilizing the seedlings until the seed leaves (cotyledons) are fully expanded and the true leaves are beginning to unfold.

Weeks to Grow:
5 to 7 weeks

Transplanting to garden:
When transplanting to the field use a starter fertilizer make sure to follow the manufacturer’s recommendations.

Irrigating/Watering:
Watering in the morning allows plants surfaces to dry before night and reduce possibility of disease development.

For more information contact Ahmad R. Robertson, Assistant ANR, LSU/SU AgCenter at 225-222-4136 or by email.

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