Seeding winter wheat into chemfallow requires different planning than seeding into other stubble. Here are some tips that Janine Paly, WWWI agronomist for Alberta, has for producers to seed winter wheat successfully.
Minimize stubble disturbance/maintain stubble: Standing stubble is a key practice to establish winter wheat as the trapped snow insulates the crop from winter elements. Year-old stubble will break apart easier than stubble from a freshly harvested crop; however, any stubble is better than summerfallow. Minimize traffic over the field to maintain stubble integrity by using the same tracks in spraying operations and avoid harrowing and cultivating if possible.
Line up seed early: Before spring crops are harvested, take advantage of the less busy time and source seed. Plan to have the seed on farm and treated with a seed treatment before planting. Research conducted by Agriculture and Agri-Food Canada indicates a seed treatment minimizes seedling disease and can help with winter survival.
Fertility management: Selecting the right source and amount will help ensure your soil has a balanced supply of plant nutrients. It is important to perform a soil test to determine nutrient levels within the field. Winter wheat nitrogen management is different than spring wheat and determining the right timing of nitrogen application will vary depending on your operation. There are a few options: fall-applied, spring-applied or split application, but the method will vary depending on weather, soil moisture, and seeding equipment. Winter wheat has the ability to yield up to 40 per cent more than CWRS with adequate rates of nitrogen.
Seed early: Seeding early is a key factor in establishing a successful winter wheat crop. Plants that enter the winter with three to four leaves have a well-develop crown tissue and a better chance of winter survival. The optimal seeding window across the Prairies is between September 1 and 15. The question that may arise is, “How early can I seed?” It is better to seed earlier than later as producers can get busy with harvest operations and forget to seed within the optimal window. Extra consideration when seeding too early is the risk of disease transfer of stripe rust or wheat streak mosaic virus. If these diseases are of concern, growers can seed a resistant variety, delay seeding (depending on region), or should avoid seeding into conditions with volunteer cereals, or adjacent to a green wheat crop.
In recent decades, Prairie producers have taken steps – such as using minimum tillage, improving water supplies for livestock, and storing extra feed – that enable them to survive short droughts. But the Prairie climate in the coming decades could include droughts that last five, 10 or more years, as well as extreme swings between really wet and really dry conditions. So Prairie people are starting to come together to plan and prepare for whatever the future might hold.
Many people on the Prairies have experienced dramatic shifts between extremely dry and extremely wet periods in the last few years. “For instance, from April to June in 2015, Regina had 43 millimetres of rain. Normally it would see about 147. Looking at the records that go back to the 1880s, it turns out to be the third driest such period in 120 years. But the previous April to June was the wettest on record for Regina. That is the kind of weather whiplash that farmers are dealing with. The weather has a Jekyll and Hyde personality,” David Phillips, senior climatologist with Environment Canada, says.
He adds, “Farmers build into their strategies dealing with things like too wet to seed and too dry to grow – those things happen when you’re in farming. But when you get back-to-back weather conditions you would expect to see only once in a career of 40 or 50 years of farming, how can you deal with that?”
Looking at the period from 2009 to 2011, University of Manitoba atmospheric scientist John Hanesiak and his colleagues found that precipitation ranged “between record drought and unprecedented flooding.” In some instances, drought and very heavy rains occurred at the same time in different parts of the Prairies. And some locations experienced both weather extremes within those three years; for example, some southern Manitoba farmers had insurance claims for both flooding and drought in the 2009 growing season.
This type of wild variability is predicted to be part of the future climate. “We are expecting to see greater variability from year to year, going from droughts to really wet periods. Even the older climate models were telling us 10 or 15 years ago to expect that kind of a pattern,” Hanesiak says.
The current variability in the Prairie weather may be one indication that the predicted patterns in the atmosphere are starting to become a reality. “Recently some articles have suggested that we’re on the verge of seeing these things happening now, where the wave in the jet stream tends to meander a little more. That potentially could create a more stagnant pattern, where you get longer periods of drought and longer periods of wet, depending on where you are on that wave,” Hanesiak explains.
Studies of past climate patterns show that such weather extremes are not new to the Prairies. Research by Dave Sauchyn of the University of Regina has found that multi-year and multi-decade Prairie droughts have occurred during the past 1,000 years.
“We tend to get caught off-guard [by extreme weather] and we use the excuse that ‘we couldn’t have anticipated it because it has never happened before.’ We’re implying that it has never happened in our lifetime because we all think in terms of our own situation,” Sauchyn says. “But if you get outside your own local experience and look at the longer records, you find that it has happened over and over again.”
Adapting as individuals and groups
Sauchyn has been sharing the results of his climate research with Prairie people who need the information, and he has been learning from them about their drought adaptation strategies. For example, in October 2015, Sauchyn and his research group met in southwestern Saskatchewan with local people including farmers, ranchers and government officials.
“They told us that much of what they have already done over the decades, and especially the last few decades, is putting them in good shape because, in general, agricultural practices are more sustainable than they were in the past. That is reflected in less soil erosion and more resilient agricultural ecosystems. In general, if you maintain a healthy and resilient agro-ecosystem and take proper care of pastures, crops, soil and water, then agriculture will be less vulnerable to the impacts of climate change,” he says.
“But they also told us that individual farmers and ranchers can only do so much, especially if drought exceeds more than one or two years. They can store water for a couple of years. There is an extensive water storage and diversion infrastructure on the Prairies, especially in the drier parts, and it has been very effective in withstanding one- or two-year droughts. Beyond that, there is only so much water that can be stored. Similarly, feed can be stored for one or two years. But they tell us that after a couple of years of drought, the local options are pretty much exhausted.”
At that stage, people turn to their social capital. Sauchyn explains, “We’re all familiar with concepts like ‘fiscal capital,’ money, and ‘natural capital,’ ecosystem goods; there is also ‘social capital,’ maintaining good relations among neighbours. Especially when people are faced with climate extremes like flooding and drought, they rely very much on that social capital.”
He notes, “One of the most effective ways to adapt to a changing climate is to work collectively, with your neighbours within your watershed. Local organizations such as watershed stewardship groups are especially effective.”
Preparing for extreme
One example of a Prairie watershed agency working to prepare for climate variability is the Battle River Watershed Alliance (BRWA). The Battle River has its origins in east-central Alberta and flows into Saskatchewan where it joins the North Saskatchewan River. The BRWA is an Alberta group created in 2006 and it operates in the Alberta portion of the Battle River and Sounding Creek watersheds. The BRWA describes itself as “an inclusive, collaborative and consensus-based community partnership that is working to guide, support and deliver actions to sustain or improve the health of the Battle River watershed.”
BRWA research and stewardship coordinator Susanna Bruneau outlines how the Alliance is approaching climate variability. “At conferences, they talk about preparing for extremes, where you could get really wet events, like the flood in Calgary a couple of years ago, or a multi-year drought. We’ve been trying to work on things that can help in managing both those extremes, especially natural infrastructure like wetlands and riparian areas and even shelterbelts.” Those types of features can have benefits like reducing flood peaks, capturing water in case of drought, and protecting water quality.
She notes, “Another part of how we approach things is trying to have our systems – whether it’s our social support systems, agriculture systems or water infrastructure systems – made in a way that can be adaptive to whatever comes our way.” She explains that the BRWA recognizes the complexity and uncertainty in these systems so it works to continually learn from experience and adjust its plans and actions to more effectively deal with emerging realities. If the BRWA finds that an approach is not working, then it evaluates the approach, asks stakeholders what should be done differently, and modifies the approach to make it work better.
Drought planning a priority
In a watershed-wide consultation process, local people identified drought planning as a top priority for the BRWA. So it developed drought guidelines and policies, which were released in 2012. These documents provide a framework to help agencies in the watershed when developing drought plans for their own area of responsibility. The guidelines relate to agriculture, social issues, natural areas, and water quantity and quality, and consider the social, economic and ecological impacts of drought.
The BRWA’s drought guidelines cover both “drought adaptation,” preparation for future droughts, and “drought management,” responses during a drought. A few examples of the drought adaptation options for agriculture include: actions that research agencies could take, such as developing drought-tolerant crop varieties; actions that governments could take, such as monitoring water supplies, developing drought plans and policies and modifying crop insurance programs; and actions that producers could take, such as choosing crops adapted to drier conditions, developing drought farm plans, managing grazing rates, conserving wetlands and riparian areas and diversifying farm income. The drought management guidelines for agriculture include actions like implementing drought plans, and sharing drought monitoring information.
Although people in the Battle River watershed are aware of the need for drought planning and preparedness, it is a challenge for local agencies to direct their limited human and financial resources towards this task. Bruneau doesn’t know of any agencies in the watershed that are currently using the BRWA’s guidelines to develop their own drought plans, but she’s hoping that will change.
“Drought is part of the climate cycles here on the Prairies. Drought is going to happen, no matter what happens with climate change. There is a lot we can do to mitigate the impacts of drought if we plan and adapt before a drought happens,” Bruneau says.
“Drought is not like a flood or an earthquake; it’s not a sudden crisis where you have to deal with things in the heat of the moment. Drought is sly and it sneaks up on you. Unless you are paying attention you’ll get caught. But we have opportunities to prepare for drought, and when we see drought coming or just less than normal precipitation, there are things we can do.”
Nationally, here’s what’s expected:
Canola – potential record-high of 22.4 million acres. Up over 9.9 per cent from last year.
Soybeans – farmers intend to seed a record seven million acres of soybeans, up 27.2 per cent from last year.
Wheat – 23.2 million acres of all varieties of wheat, relatively unchanged from 2016.
Lentils – record 5.9 million acres of lentils were seeded last year. This will be trimmed by 25 per cent to 4.4 million this year.
Barley – down eight per cent compared to 2016, plans for 5.9 million acres.
Environment Canada forecasts an average spring which would be good for wheat, corn and soybeans, the most important crops in the region.
Though the forecast says April will be warmer than normal, with temperatures already hitting 20 C compared to the seasonal average of 6.8 C, meterorologist Peter Kimbell says precipitation is expected to be around the usual 83 millimetres for the month. | READ MORE
“After three years of research studying multiple pathways and movement of dust from air/vacuum planters, our goal should be to reduce all residue escapes by 90 per cent,” Schaafsma says.
Based on the research, Schaafsma identified five recommendations to farmers:
1. Ensure pesticides stay on the seed by using approved fluency agents and polymers.
2. Avoid abrasive seed lubricants.
3. Filter and redirect planter exhaust dust into the soil.
4. Ensure clean air flows through the vacuum intakes.
5. Practice conservation tillage to minimize soil movement.
Canada’s Pest Management Regulatory Agency recently released a proposed re-evaluation decision, which would see Imidacloprid phased out in three to five years. In referencing this action regarding this commonly used seed treatment, Dr. Paul Sibley, scientist and toxicologist at the University of Guelph says “Intermediate solutions and options must be considered to allow the industry to adjust and adapt to new technology.”
Schaafsma further indicates there are new developments in the works with planter filters, cyclones to filter and stabilize dust, as well as polymers to more firmly attach pesticide product to the seed. He is also encouraging farmers to collaborate with industry to work on restricting dust movement.
Many industry partners have been looking forward to results of Schaafsma’s research in an effort to better respond to public concerns over pollinator health, aquatic insects and environmental concerns.
This project was funded in part through Growing Forward 2, with the Ontario Soil and Crop Improvement being a key partner.
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