100% positive i have virticillum wilt or futrisum wilt... Helpp
1 Response
If you are referring to the splitting petioles, this could be no more than an inconsistent water problem. Larger varieties are susceptable to this. Excess water can cause leaves to wilt as can not enough water. You would expect severe wilting with fusarium and verticillium. Check out the following information on sunflower diseases:
https://www.ag.ndsu.edu/publications/crops/sunflower-disease-diagnostic-series
I hope this helps,