Kelantan faces the South China Sea and takes the northeast monsoon head-on. Serious flooding is a recurring feature, and a nutrient programme that ignores the flood calendar is a programme that gets washed away.
The Kelantan paddy plain around the Kemubu scheme sits on river deltaic alluvium that is generally lighter and sandier than the heavy clays of Kedah. Lighter texture means lower cation exchange capacity and faster nutrient movement through the profile.
Combine that with the highest monsoon rainfall on the peninsula and the result is severe leaching potential. Retaining nutrient in the root zone long enough for the crop to use it is the central problem here, and organic matter and humic fractions are the practical lever on it.
Kelantan receives the most intense northeast monsoon rainfall on the peninsula, roughly November to January, with major flooding a regular occurrence. Cropping calendars are built around avoiding that window.
Nutrient demand, challenges, application timing and the products we recommend for rice.
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