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Ontario Crop Production Update August 10, 2019

According to Mark VanOostrum, the harvest of the early processing crop is going well. The yield is average, solids are slightly higher and a little bit of common scab is showing up. I am not surprised to hear about scab this season; common scab is more aggressive in dry years. It appears that the  beneficial bacteria, which compete with scab, suffer more than scab when it is dry. This results in more…

Digging of the Fresh-Market Crop Has Begun Near Leamington, Ont.

Things looked very different across the province from July 22 to 26 depending on the area.  Digging of the fresh-market crop has started near Leamington, Ont. Quality and size look good. Growers are digging the earliest planted fields in the Simcoe-Delhi region, but the area is dry. “Harvest has started for us and the crop looks good. We need some rain because harvesting and irrigating are not a great combination,” said Joe Lach,…

Late Blight Spores found in Ontario Spore Traps

High numbers of late blight spores were found in the filters of the two spore traps placed near Delhi, Ont. This area has received enough rain recently to create favourable conditions for disease development. Keep the crop protected, especially new growth.  It’s the best way to reduce the risk of outbreaks. Some early planted fields are being topkilled in Norfolk County. Tank mixing Reglone with Copper Hydroxide (e.g. Parasol) should ensure that spores…

Stress Factors and Management Practices for Sugar End Disorder and Stem-End Chip Defect

SUGAR ENDS AND stem-end chip defect are tuber disorders affecting product quality of processing and chipping potatoes, respectively. The environmental stresses causing the disorders occur during the growing season, but tubers appear asymptomatic until harvest or later in storage. Although there are many similarities between the two disorders, there are also some key differences.  To understand the factors causing sugar ends and stem-end chip defect as well as management practices to reduce…

Sugar End Disorder and Stem-End Chip Defect Stress Factors and Management – A Spud Smart Webinar & Podcast

Sugar ends is a physiological disorder that can occur at a tuber’s bud or stem end. The disorder’s symptoms usually aren’t apparent until the tuber’s exposure to colder temperatures — around 10 C or below. The stress that causes the disorder’s development occurs early in the growing season and may be difficult to determine.   Stem-end chip defect is another serious threat affecting tuber quality for chip potato growers. What are the causes…

Ontario Potato Crop Update

As heat and drought continue across the province, irrigation has been the order of the day.  Many fields are in the tuber setting stage, a stage that requires adequate soil moisture for an optimum tuber set.  Fields with closed rows and vigorous canopies keep the soil cool, which reduces stress.  Potatoes suffer when soils get hot in direct sun.  Many fields still have open canopies, the result of late planting.  Unfortunately, a…

Summer Checklist for Late Blight

When it comes to late blight, an ounce of prevention is worth a pound of cure. The following is a comprehensive list for the control and management of late blight during the summer.  EARLY SUMMER  • Field scouting  Start your scouting program before the crop emerges. This will allow scouts to become familiar with field characteristics such as low spots and changes in soil texture.  Risky areas that should always be monitored…

BASF to Discontinue All Metiram-Containing Products

In accordance with the recent Pest Management Regulatory Agency (PMRA) decision regarding products containing Metiram, BASF will be discontinuing all Metiram-containing products according to the PMRA-mandated phase-out schedule below.   The Metiram active ingredient is available commercially as Polyram® DF (PCP: 20087) (a stand-alone Metiram formulation) and Cabrio® Plus (PCP: 30395) (a co-formulation of Metiram and Pyraclostrobin).  BASF may only sell Cabrio Plus or Polyram DF prior to December 31, 2019. Distributors and retailers can continue…

Spud Smart Webinar: Sugar End Disorder and Stem-End Chip Defect Stress Factors and Management Practices

Sugar ends is a physiological disorder that can occur at a tuber’s bud or stem end. The disorder’s symptoms usually aren’t apparent until the tuber’s exposure to colder temperatures — around 10 C or below. The stress that causes the disorder’s development occurs early in the growing season and may be difficult to determine. Stem-end chip defect is another serious threat affecting tuber quality for chip potato growers. What are the causes…

Build Soil Quality and Suppress Soil-Borne Pathogens to Improve Yields Study Concludes

Canadian potato farmers, facing rising production costs and increased pressure from global competitors, are always looking for ways to increase yields. Identifying obstacles limiting potato yields is part of the answer, and was the primary objective of a major five-year research project conducted in New Brunswick, Prince Edward Island and Manitoba, which wrapped up last year. Project partners in the industry-led study included McCain Foods Canada, Agriculture and Agri-Food Canada, Potatoes New…

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