b'ROUNDTABLE There are a fair number of people that have tried mustard biofumigation in other provinces with varying results. Its important to take their considerations in account for some of these local adaptations. ZACK FREDERICKSS: Why are biofumigants specific to region?Zack Federick (ZF): Not all of these mustards have the equivalent biofumigation potential when it comes to Verticillium wilt or managing any of these other specific pests or pathogens that are trying to be targeted. And even in these cases where youre trying to target Verticillium wilt, then you have the Caliente Rojo cultivars for example, you got the correct mustard but if you apply the incorrect method, this will lead you to an unsuccessful biofumigation. In the conversations that I had about mustard biofumigation in Manitoba in 17 and 18, when growers were experimenting on their own, the initial results were frustrating and they didnt think it was working. The problem turned out to be the situation with the correct mustard and the incorrect method, whichA field of Caliente Rojo, the mustard variety used in the mustard biofumigation trials. PHOTO: ZACK FREDERICKprevented the process from getting over the finish line. So, its important that you pair it the two and this is where itover two months. Four to five inches areproject into several different ideas that we becomes critical to make sure that thegenerally applied in the first month toare exploring together at the moment. mustard and the method really have beenkeep the seedbed moist. Some growersOne fragment explores what we can do experimentally verified in your region.avoid extra irrigation with early planting,with dryland Caliente Rojoare there There are a fair number of peopleinstead of planting in late July, to keep theother benefits to biofumigation that can that have tried mustard biofumigation inseed bed moist with less water.be explored? Another fragment clarifies other provinces with varying results. ItsHowever, in talking with growersif the Caliente Rojo fields with bigger important to take their considerationsthroughout Manitoba, its uncommonbiomass are able to achieve Verticillium in account for some of these localto have dedicated pivots. So, the needwilt management. The third fragments is adaptations. We started out with ato irrigate really has been the Achilleswhere Haider and I are exploring if other protocol from the United States forheel of the whole process, which is partmustards are able to achieve Verticillium biofumigation with Caliente Rojo. Thisof what led Haider and I to fragment themanagement with dryland production. protocol in itself was originally developed in Italy and adapted to the United States, so it makes sense that we had to make further alterations to succeed in Manitoba. I would expect other regions to have toRidding Potato Fields of Verticillium wilt in Manitobamake similar adaptions.spudsmart.com/ridding-potato-fields-of-verticillium-wilt-in-manitoba/Verticillium and WeedsSS: Why is irrigation needed? spudsmart.com/verticillium-and-weeds/ZF: We really need to irrigate the CalienteWar and Peace, Verticillium Styleto get the big biomass so far, with upwardsspudsmart.com/war-peace-verticillium-style/ of eight or nine inches being put down 24SPUDSMART.COM Spring 2022'