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In May and June, Manitoba experienced cool and rainy weather conditions, which delayed planting operations and slowed down plant growth at the start of the season. By the end of May, much of the province had received more than 150% of normal rainfall, with some areas, particularly Eden, experiencing over 300%. The northwest region faced a particularly challenging spring, and many fields had not yet been planted according to insurance guidelines.

With all this rainfall, planting plans had to change rapidly, showcasing the flexibility of soybean crops. For soybeans, planting dates are flexible throughout May and respectable yields can still be achieved into June. From a rotation planning perspective, planting soybeans in many fields is often feasible, as it is known that Manitoba does not experience significant occurrences of tougher soybean diseases. Although one wouldn’t want to do this every year, soybeans offer this adaptability when plans need to change.

Due to wet soil conditions and tight planting schedules, applying the system in many soybean and dry bean fields proved difficult. As many began applying the system to their fields, they noticed that the beans were starting to leak out and were at the hook stage, which is prone to breakage. This meant that some stone-free fields weren’t included in the system, and stones in the fields that needed it were carefully timed for application on a warm day when the plants were flexible.

These cool, rainy conditions were followed by high winds, leading to serious sandblasting damage in some areas, which resulted in the replanting of certain dry bean and soybean fields. In fields that weren’t replanted, some experienced delays in maturation, but new branches emerged to fill gaps in plant stands.

Winds, cool temperatures, and wet soils created challenging conditions for timely herbicide applications. Applications made in windy weather caused herbicides to drift off-target in some regions. Wet soils restricted access to many fields, while cool temperatures slowed down the growth of weeds, limiting herbicide uptake and effectiveness. However, despite the adverse weather, many were pleasantly surprised by how effective their weed control measures were this year. The benefits of an effective pre-emergence or pre-emergence herbicide program truly became evident.

For chickpeas, prolonged wet conditions in several fields led to root rot infections towards the end of June, particularly in fields with a history of chickpeas. To assist with planning future rotations, tests for Aphanomyces root rot were encouraged.

Chickpea leaf beetles are a relatively new pest in Manitoba and expanded their range once again this year, now confirmed as far as Stonewall. Fortunately, populations in the most heavily affected regions seemed to have decreased this year.

By the end of June and the beginning of July, when soybeans reached the V2-V3 stage, IDC symptoms began to appear commonly across many fields, with plant yellowing being noticeable from the road. Excess moisture, soil carbonates, soluble salts, and nitrate levels are just some of the conditions that contributed to IDC development. Many fields managed to cope with IDC up to the V6 level, but symptoms persisted longer in sensitive varieties.

In mid-July, temperatures rose, and many regions began to catch up with the normal growth degree days. Moist conditions continued among wheat fields, and diseases began to spread in areas with excessive moisture.

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Source: Tarım Haberleri