Using clubroot resistant genetics and lengthening rotations are extremely advisable practices for managing clubroot on the Prairies. However is there extra farmers may do?
“Ninety per cent of those clubroot spores can die with a two-year break, so one in three rotation, that’s really critical. If you have a shorter rotation than that, and you’re looking at improving your ability to manage clubroot,” says Keith Gabert, agronomist with the Canola Council of Canada.
The problem although, is that the remaining 10 per cent of spores even after lengthening rotation continues to be manner too many spores — billions of spores per gram of soil, to tens of millions of spores per gram of soil, continues to be a big infestation that places a whole lot of strain on clubroot genetics, says Gabert on this Canola College episode.
“One of the additional tools that we’d like growers to consider, is some patch management,” says Gabert, which could be so simple as leaving the world undisturbed, seeding the world to grass, or by including lime to the soil and incorporating it properly.
Canola Council analysis means that if via liming soil pH could be introduced as much as about 7.2, the calcium current and the pH adjustment make it and inhospitable atmosphere for clubroot galls.
Gabert’s largest tip is to begin small — transportation and logistics of ag lime for giant areas means sharpening your pencil and determining the place it’s greatest and most appropriately positioned.
Adjusting soil pH is a logarithmic scale and proportionally increasingly more product is required to push that soil pH as much as 7.2, Gabert explains.