Neem cake is the residue, while neem seed's kernel crushing for neem oil. The neem cake excellent in control of nematodes.
How it controls :
Neem cake ( Pure neem cake with azadirachtin min.1000ppm) applied in the land about 300kg-400kg per hector will enough. The neem cake slowly work in the soil and controls the nematodes population alomost 50% with in 20 days of the application. after the second application of the neem cake the nematodes population reduced to 20% or less. while you are going to take 3rd time application the nematodes are below the average percentage.

i have been doing research in university more than 3 years about this product. We have been sponcered by the leading neem product manufacturing company in india. Parker Biotech Private Limited.

http://www.organicneem.com