Will kill nematodes immediately. They will simply ingest and explode.

There is great difficulty in mutating citrus for defenses because of the long life of the tree (as much as 100 years in rare cases) and the extreme time it takes for a tree to become economic in its production (about 10 years).

Nematodes are not much of problem in groves. It is the encroachment of population with people building homes close to groves that cause major problems. When the house is build momma wants to beautify with pretty ornamental plants and flowers. Here come the bugs.

Research on Canker and cold resistance have been only partially successful. Cold resistant root stock does not appear to give the same output per tree as the traditional varieties such as rough lemon here on the sand hill.

The development of a new fruit variety takes between a decade and a generation, and then the commercial success is not a given.

BTW, I don't have a clue as to the long term effects of putting sugar water on a nematode infected area would be. What happens under the microscope and in the field are not the same. It is interesting though.

Publius