Collar rot-Macrophomina spp

 

Mainly associated with drip irrigation. Usually caused by over irrigating or high water table/ poor drainage. The plant tries to recover by making new roots in the rotted area. Farmers use to cover these area's with soil, in order to stimulate secondary root growth

 

Improve growing conditions .Decrease irrigation and plant plants on elevated ridges

 

 

 

 

 

 

 

 

 

 

 

NOTE: THE USE OF ANY RECOMMENDED TREATMENT ON THIS PAGE IS ON USERS OWN RISK AND SHOULD BE ALLOWED FOLLOWING LOCAL LAW AND REGISTRATION. (Actually this is a big problem, since no pest- or fungicides are being specifically registered  for Jatropha. Jatropha as a crop is simply too new and only recently got the interest from pesticide manufacturers)