Row Covers for Ginseng and Lavender – Notes on Forecasting Frost Events

Both ginseng and lavender growers have invested in large amounts of row cover to protect plants from cold temperatures (Figure 1). Ginseng growers will use row covers when frost events are forecast. Lavender growers use row covers for winter protection, but may want to consider re-using them for frost protection as well if a major frost is in the forecast.

Figure 1. Row cover used for frost protection on ginseng. Continue reading

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Herbicide Screening Trials for Ontario Grown Quinoa

P1130751Early season weed management is a limiting factor for quinoa production in Ontario. Currently there are no registered herbicides for use on the crop in Canada which is a concern for the commercial development of locally produced quinoa.    In 2015, an OMAFRA field project, with assistance from AAFC, evaluated crop injury and yield of Ontario field-grown quinoa with applications of various herbicides to better understand potential weed management options for the crop.

The study evaluated a total of 14 pre and post emergent herbicide treatments (7 different herbicides). The most promising treatments from the trial were post-emergent applications of s-metolacholor/benoxacor (Dual II Magnum) and pendimethalin (Prowl H2O).  Minimal crop damage was observed with applications of s-metolachlolor/benoxacor.  Some plant injury was observed in plots treated with pendimethalin, however, no statistically significant reduction was found in plant height or plant density compared to control plots.

Click here for a complete summary of the project from the 2015 field trial.

Results from the project indicate there may be some selective herbicide options to explore for future registration on quinoa, however, more research is required to optimize herbicide application timing on the crop.


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Orondis Gold Fungicide on Ginseng – Important Update

Orondis Gold has now been scheduled in Ontario and is legal to apply. It will now be distributed to suppliers.

Click here for more information on Orondis Gold.

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Hop Pruning and Training in Ontario

Hop pruning is the removal of the first shoots in the spring prior to training.  The primary reasons for pruning include disease management (removal of systemically infected shoots) and to ensure uniform shoots with higher yield potential for subsequent training.

Training is the selection of the best bines from regrowth after pruning and consists of the physical placement of the bine on strings (Fig 1).

Hop plants trained for the season

Figure 1: Hop plants trained for the season.

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Ontario Fruit and Vegetable Convention Presentation Slides Now Posted

Presentation slides from the 2016 Ontario Fruit and Vegetable Convention are now posted on the OFVC website. Specialty Crop content at this year’s OFVC included four full sessions:

Specialty Vegetables
Specialty Crops – How to Add Value to Your New Crop
Growing Garlic Potential

There were also many general sessions that may be of interest to specialty crop growers including:

Foliar Nutrients
Frost Protection
Bird and Wildlife Management
Sustainable Horticulture Production
Soil Health and Organic Matter
Food Safety
Business – Growth and Planning for the Future I and II
Precision Ag

Some presentations may not be available if presenters did not use slides or did not wish to have their presentations posted.

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Orondis Gold Fungicide Registered for Control of Phytophthora Root Rot on Ginseng

Orondis Gold fungicide was recently registered for the control of Phytophthora root rot on ginseng. Orondis (oxathiapiprolin) is a fungicide in a new group that has been shown to be highly effective at controlling Phytophthora.  It will not move down from the leaves to the roots, so must be applied to the root zone to control Phytophthora root rot. This will require application with a high water volume to get it into the straw followed by irrigation or rainfall to wash it into the root zone.

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Hops IPM Training this Friday

Just a reminder that a Hops IPM training session will be held this Friday, April 8th from 1 to 3:30 pm at the Woodstock-OMAFRA Resource Centre.  Anyone interested in attending is asked to pre-register, as there are limited spots available in the venue. To register, call the Agriculture Information Contact Centre at 1-877-424-1300, or the OHGA. See below for a full description.

Hops Scouting and Integrated Pest Management Training

Woodstock OMAFRA Resource Centre – Large Boardroom

Unit1—401 Lakeview Dr., Woodstock, ON

Friday, April 8, 2016

1:00  – 3:30 pm

Melanie Filotas, Specialty Crops IPM Specialist, OMAFRA

 Hops have a large complex of pests that can affect yield and quality.  These require careful monitoring and management to keep pest populations below economically damaging levels, but identification and management can be a challenge.  This 2 1/2 hour indoor workshop will provide hop growers, scouts and industry members with an overview of integrated pest management in hops.  Topics covered include: scouting a hop yard, pest diagnostics 101, Hop Diseases (downy mildew, powdery mildew, viruses, cone blights, fusarium canker, Verticillium wilt); Hop Insects (two-spotted spider mite, potato leafhopper, Japanese beetle, caterpillar pests, general defoliators); and Natural enemies in the hop yard.   Focus will be on scouting and identification, however management techniques for major pests will also be discussed.   A follow-up, in field workshop will be held later in the season.

Two more pest managment-related field days will be held for hops growers later in the season.  See below for details.   Continue reading

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