Recently, the Sm1 gene has been identified as being natural in most sweet-spring wheat varieties (SWS), including: AAC Awesome (CWSP), AAC Chiffon, AAC Indus, AC® Sadash and AAC Paramount. The fact that these varieties have been grown so far without refuge jeopardizes the Sm1 property. This is why producers of these SWS varieties must also follow trust practices in favour of all wheat producers. Another new variety, AAC Magnet, is considered moderately fusarium resistant, but lacks the midge tolerance side, but not all manufacturers want both. The Canadian Plant Technology Agency monitors an online system set up by the Tolerant Wheat Stewardship midge team to improve stewardship agreement procedures for producers and retailers, which will help ensure the continued protection of the midge-tolerance gene while ensuring confidentiality and confidentiality. Randhawa says that producers consider the entire agronomic package when making seed decisions, and Midge is only a variable. „In some areas where there is a lot of midge pressure, where there is a loss of yield, you don`t really have a choice (but you have to plant MTW), but in other areas without too much pressure, you can choose.“ This situation is crucial because the wheat mid can attack shelters and the level of refuge in agricultural seeds can change dramatically over several generations. For example, in the event of an extremely severe midge infestation, the vulnerable environment could experience a loss of yield of up to 50%. In order to maintain the refuge at the desired level of 10 per cent of the plant population, it is necessary to limit the use of plant-efficient seeds to a certified seed generation. The share of MTW-sown CWRS has declined in recent years due to relatively dry weather, resulting in lower average pressure. Last year, about eight per cent of the total area of the CWRS prairie was tolerant.
Hyra says MTW`s „real house“ is Saskatchewan, while the acres were lower in Alberta and Manitoba. „Seed customers arrive in Midge and have migrated to other varieties that offer a shorter, stronger reduction of straw or a better reduction in fusarium.“ Midge Tolerant Wheat`s flight attendant team encourages breeders to visit their seed trader and sign their agreement today. Only a few minutes with your dealer saves you a lot of time and effort when seeding starts and provide continuous protection of the only midge tolerance gene. AC Andrew does not contain Sm1, making it an appropriate safe haven for SWS wheat. If some non-tolerant varieties are not present in a field, the wheat mid may adapt to tolerant varieties, which means that the property would no longer be effective (see „How the wheat refuge works“ on the soil). The mid-range tolerant wheat varieties have been sold as a mixture of two seed varieties: 90 percent are a midge-tolerant variety, and 10 percent are another variety, or „refugee“ that is not midge-tolerant. Both varieties are included, unlike maize refuge systems, where the refuge is grown in a single block inside or outside the field. He explains that traders, retailers and seed producers need a new licensed distributor number to access the new system. This will be achieved by completing the updated retail training in midgetolerantwheat.ca and by signing a new dealer trust contract on MTWSA.ca.