From the articles I have read so far from the articles received I have the following impressions:
This termed is coined directly from the intellectual proprietary where works that tend to be intangible can be registered and have ownership claimed over it. Likewise in agricultural proprietary huge corporations tend to discover seeds or engineer seeds that farmers have sown on their soils. These huge companies registered these seeds as agricultural propriety.
These are often hybrid seeds developed in the laboratories by huge agro-chemists.
This is the practice of agriculture where no foreign chemicals are introduced into the farming process but nature alone to have its way.