Take the Test – Beat SCN Soybean harvest has begun, and many growers have asked if they could sample for soybean cyst nematode this fall. For many growers, managing soybean cyst nematode (SCN) means planting SCN resistance varieties BUT effective SCN management does not end when you have selected your soybean varieties! It is imperative to not only know your…
OMAFRA Field Crop Team September 10, 2020 483 Comments Off on OMAFRA Field Crop Report – September 10, 2020Managing Eroded Knolls We’ve all seen them. Hilltops. Whitecaps. High spots where the crop struggles year after year. Eroded knolls are common to Ontario agriculture and cost farmers in lost productivity each season. This article is to explore knolls: how they’ve formed, how they differ, and how they can be managed or even re-mediated. How do knolls develop? The major…
OMAFRA Field Crop Team September 3, 2020 1765 Comments Off on OMAFRA Field Crop Report – September 3, 2020Is It Bad to Plant Corn After Cereal Rye? There has been interest in rye for cover crops or maximizing yields in silage systems (Figure 1) where rye can be harvested for silage by mid- to late May which still allows time for planting a corn silage crop. Benefits of rye include good winter hardiness, early maturity and high yield…
OMAFRA Field Crop Team August 27, 2020 590 Comments Off on OMAFRA Field Crop Report – August 27, 2020High corn rootworm (CRW) pressure in 2020 is challenging current Bt rootworm hybrids and several Ontario growers have reported unexpected injury by CRW. This indicates that possible cross resistance has occurred, where even pyramid hybrids with multiple rootworm traits are impacted. Currently, we know that several fields with injury in Huron, Perth and Durham Counties are being investigated. There are…
OMAFRA Field Crop Team August 20, 2020 453 Comments Off on OMAFRA Field Crop Report – August 20, 2020Managing to get the most from available water Water is the most important limiting input for crop production. In more than a couple of the past years, producers across the province have been forced to watch while their crops suffer from dry conditions in the heat of summer. Other than irrigation (which is rare for field crops in Ontario), there’s…
OMAFRA Field Crop Team August 13, 2020 525 Comments Off on OMAFRA Field Crop Report – August 13, 2020This week we would like to discuss tar spot in corn as well as soybean cyst nematode and sudden death syndrome in soybean. Tar Spot in Corn There is a lot of discussion and questions surrounding tar spot this year in Ontario. Tar spot is a new corn disease in the US midwest and since its initial confirmation in northern…
There are currently three key topics for forage production: nitrates, potato leafhopper, and planting annual forages for fall production. Nitrate poisoning of livestock is a risk in a dry year In a dry year, high nitrate levels in forages are a concern. Fast-growing grass species, such as corn, sorghum-sudangrass, and cereals are most likely to accumulate nitrates. Nitrogen moves from…
The establishment of cover crops after cereal harvest has been shown to reduce weed seed production and dispersal to the soil. This is of particular benefit when trying to manage glyphosate resistant weed species like Canada fleabane and waterhemp (a relative of redroot pigweed). Some highlights from recent studies include:
Harvested wheat fields offer the perfect opportunity to focus on improving soil health. Planting cover crops and/or applying manure or other organic amendments provides soil microbes with the carbon compounds that help create a more porous soil structure which improves water, air and nutrient cycling. Here are a few common questions that come up every year regarding the application of…
Dry beans are either approaching flowering or have already started flowering across Ontario. White mold is an important disease of dry beans in Ontario and in-crop management of white mold occurs during flowering. White mold spores can land on stems, leaves or pods but deteriorating flower petals are very susceptible to infection. Spores colonize flower tissue, and the disease enters…
The Ontario Virtual Crop Diagnostic Event will replace all in-person provincial crop diagnostic days that have been postponed this season due to the COVID-19 pandemic. The first series of diagnostic learning sessions begins on Wednesday July 15, 2020. For more information and to register go to OMAFRA Virtual Diagnostic Days Series website. While the management window for much of our…
By OMAFRA FIELD CROP TEAM Winter wheat harvest is quickly approaching so as we get prepared here are a few quick reminders to help us get through what will hopefully be a great harvest! Watch for Pre-harvest Intervals (PHI) With armyworm, as well as other insects being monitored in many areas through to harvest, and with the potential need for…
Wheat Pests are Still a Concern True armyworm (TAW) larvae are in many winter wheat and spring cereal fields across southern Ontario, thankfully not always at threshold. Some fields have populations at threshold (4-5 unparasitized larvae smaller than 2.5 cm per square foot) or above and with minimal feeding damage. Larvae sometimes choose not to do as much feeding and…
Soybean Plant Stand Establishment Establishing a uniform, healthy soybean plant stand which closes the canopy quickly is important to maximizing yield potential. Although a perfect plant stand is not as essential for soybeans as it is for corn; higher soybean yields are often associated with more uniform stands. Attaining a good plant stand is more difficult for soybeans than other…
By OMAFRA FIELD CROP TEAM June – 4 – 10 Crop Conditions Soybean Some replanting has occurred especially on heavy clay soils with poor emergence. Soil crusting and seed corn maggot feeding are the main issues this spring. If plant stands are below 100,000 plants per acre replanting is warranted. The same variety can be planted into an existing thin…