rapeseed field

Warm winters lead to a 25 percent drop in the winter rapeseed harvest


Experiments with temperature-controlled fields have helped establish the ZusaThe correlation between warmer winters and a 25% decline in winter oilseed rape harvest.

The laboratory and field technology allowed a team of researchers from the John Innes Center in the UK to simulate the entire growing season and determine that the late November/early December cooling is important as it promotes growth processes in the early development of winter oilseed rape flowers. Warmer winters result in a loss of up to 25% of the crop.

Researchers used controlled environment enclosed rooms programmed to simulate the annual winter growing season based on weather data collected from the farm.

After a laboratory-controlled indoor test, the team carried out the experiment with an outdoor heated field section system on the field trial site and simulated experiments in the warm winter to the field trial.

Results from lfrom and field trials were the same, warmer winters resulted in slower growth and lower yields.

Scientists have found that canola plants can undergo a developmental phase known as flower bud dormancy if the temperature is too high in winter. This physiological process occurs when microscopic newly formed kidneys lie in an inactive state, waiting for low temperatures that provoke growth.

According to scientists, this development phase did not exist in annual crops.

Canola plants that were chilled at this important developmental stage developed faster and were more productive and formed more seeds in pods. In contrast, plants grown in warmer conditions grew more slowly and were less productive.

Source: UkrAgroConsult (Russian)

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