Category Archives: Other Topics

Matador/Warrior/Silencer and Imidan proposed phase out

The PMRA have proposed to cancel the registration of both lambda-cyhalothrin (Matador/Silencer/Warrior) and phosmet (Imidan). The decisions can be found here:

Lambda-cyhalothrin
Phosmet

The decisions state that lambda-cyhalothrin poses an unacceptable risk from dietary exposure (worst case scenario cumulative food residues would be too high), while phosmet poses a risk during application and post-application activities. The proposed precautions such as revised restricted entry intervals would not be agronomically feasible (e.g. 12 day REI for scouting carrots, 43 days for moving irrigation pipe).

Public consultation is now open until September 23 (lambda-cyhalothrin) or September 30 (phosmet) so if growers wish to make comments on these proposed decisions you can submit them to pmra.publications@hc-sc.gc.ca, or talk to your growers’ association who can comment on your behalf.

 

Talking About the Weather – 2017 vs 10 year average

The 2017 growing season has been a wet one seemingly across the province, but just how much rain have we received?

Below you can see that since March, we have received more than the average monthly rainfall in nearly all regions of the province. Many regions have received double the monthly average rainfall and this often falls within just a few days.

In most growing areas aside from Eastern and Northern Ontario, the daily maximum is within 0.3°C of the 10 year average. However, the daily minimum temperatures are averaging nearly 1°C warmer than the 10-year average. This is accounting for most of the increase in growing degree day accumulation for this year over the average. We haven’t had many hot days over 30°C, but our overnight temperatures have been a little warmer.

Here’s how different regions across the province compare to their 10-year averages in terms of degree days and rainfall.

Harrow

Harrow Continue reading Talking About the Weather – 2017 vs 10 year average

Do you have a water contingency plan?

Jennifer Jarvis, OMAFRA

In 2016, many areas of the province saw very warm and dry conditions, creating challenges for horticulture and field crop producers. Many wells were still dry leading into the winter. In other years, like the start of the 2017 growing season, the province experienced periods of excessive rain, leading to saturated soils and flooding.

No one can control the weather, but we can plan for it. The Ministry of Agriculture, Food and Rural Affairs (OMAFRA) encourages you to plan for future weather – conserving water and using it efficiently can help during low water conditions, and having effective drainage systems in place can help with saturated soils and runoff. Continue reading Do you have a water contingency plan?

New Food Safety and Traceability Online Courses!

onspecialtycrops

By Jennifer Jarvis, Stakeholder Communications and Marketing Advisor, OMAFRA

Give your company a competitive edge – take free eLearning courses to learn more about industry best practices and to be more competitive in the marketplace!

Access the new Food Safety and Traceability eLearning courses online on the Agriculture and Food Education in Ontario online learning system through the University of Guelph, Ridgetown Campus.

View original post 195 more words

Holding Vegetable Plug Transplants

Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown

Tomato transplantsHealthy and hardy transplants are a critical part of a successful season.  When field planting is delayed by rain, rain, rain, or cold weather and plug transplants must be held, it is important to monitor them closely to maintain plant health and vigour.

Plug transplants can be held in the greenhouse but if already shipped to the field grower, can be stored outside, in an area that receives direct sunlight and is sheltered from the wind. The racks should be elevated to prevent root growth through the bottom of the plugs.  If there is a risk of frost, be sure to bring the transplants inside – to a building,  a shed, or a greenhouse/hoophouse, if you have one available.  Plants should not generally be stored in an enclosed trailer or building for more than 1 or 2 days, as this may result in very soft, elongated plants, especially in crops such as tomatoes. Continue reading Holding Vegetable Plug Transplants

Recycle your old tires for a great cause

From the Ontario Federation of Agriculture:

Tire Take Back 2017

Start saving up your old tires for the 8th annual Tire Take Back event where you can turn old tires into valuable support for The Sunshine
Foundation of Canada.

From May 23 to June 4, auto recycling locations around the province will donate money for every tire collected during the Tire Take Back
event — organized by the Ontario Automotive Recyclers Association
(OARA), Ontario Tire Stewardship (OTS) and supported by Ontario
Federation of Agriculture (OFA). Continue reading Recycle your old tires for a great cause

Tips for Broadleaf Weed Control in Pumpkins and Winter Squash

Originally published in ONvegetables in The Grower, April 2017

Even with the use of herbicides, broadleaf weed control in pumpkins and squash can be problematic. Product selection is key but timing and weather conditions are also important to the success or failure of a weed control program. Each of the broadleaf herbicides comes with its own strengths, weaknesses and risks.

As a general rule, the spectrum of weeds controlled can be increased by using tank-mixes. But, for pumpkins and squash, it is wise to limit the tank-mix to two products.  A three-way tank mix is risky from a crop safety standpoint; root damage, stunting, yellowing and/or burning may occur, especially under certain soil conditions.

All of the pre-emergence herbicides require soil moisture. The active ingredient is carried by the soil water into the germinating weed seedlings, causing them to die.  Under dry soil conditions, it is tempting to use overhead irrigation to “activate” the herbicides.  This is an inexact science.  Too much water can quickly move the herbicide band into the zone of the germinating crop roots, causing injury to the pumpkins or squash. Too little water may be insufficient to move the herbicide into the germinating weeds.

It becomes a gamble between loosing crop to herbicide damage or loosing yield to weed competition. Fortunately, both Dual II Magnum and Sandea can be used for early post emergence weed control.  Unfortunately, control of weeds such as lamb’s-quarters and pigweed is less effective with a post emergence spray.

Product: Command 360 ME (clomazone)
Timing:  after seeding but before crop and weed emergence.
Rate: 0.78-1.17 L/ha (0.31-0.47 L/acre) use the low rate on light, sandy loam soils; use the high rate on heavy soils.
Strengths: lamb’s-quarters, nightshades, ragweed, velvetleaf
Weaknesses: pigweeds.
Cautions: very sandy soils and/or certain varieties may be prone to crop injury, see label for details. Also refer to the label for rotational crop restrictions.

Product: Sandea (halosulfuron)
Timing(s): after planting and before soil cracking (direct seeded), before transplanting; do not transplant sooner than 7-days after application, OR post-emergence between the 3-5 true leaf stage or 14-days after transplanting[1]
Rate: 35-70 g/ha (14-28 g/acre). See the product label for specific rate information for direct seeded, transplanted, processing and fresh market pumpkins and squash.
Strengths: pigweeds, lady’s thumb, mustards
Weaknesses: lamb’s-quarters
Cautions: Under adverse growing conditions (dry or excessive moisture, cool weather, etc.) the maturity of the treated crop may be delayed which can influence harvest date, yield, and quality. Under dry soil conditions, apply 3 – 5 cm of sprinkler irrigation to settle the soil after planting and prior to application. Do not make a post emergence application if female blossoms are present on the plant; crop damage may occur to developing fruit.

[1] If using pre-emergence and post emergence applications of Sandea, allow for a minimum of 21 days between the two applications.

Product: Dual II Magnum (s-metolachlor/benxacor)
Timing:
pre-emergence or at the 1-2 leaf stage (direct seeded crops). Prior to transplanting or within 48 hours after transplanting (transplanted crops).
Rate: 1.15 L/ha (0.47 L/acre)
Strengths: annual grasses, nightshades, pigweeds
Weaknesses: lady’s-thumb, ragweed, velvetleaf
Cautions: risk of crop injury increases with cool and wet conditions. Foliar contact can increase the potential of crop injury. Note: research in Ontario has shown high levels of phytotoxicity when using Dual II Magnum on cucumber crops.  Use on cucumber crops is not recommended.