Paddy

Fertilizer Mixtures

Paddy Fertilizer Mixtures

The most crucial factor for the yield of rice is solil nutients.The objective of fetilizing is to replenish the soil from loss of soil nutients via;

  • Continous cultivation on same land.
  • Removal of harvest and straw.
  • Leach to soil with water and decomposition

As stated in the state policy statement, the Government of Sri Lanka has made all necessary arrangements to continue subsidized fertilizer distribution programme for 2019 Yala season as well. The government policy is to provide 50 kg bag of major three fertilizer types such as Urea, Triple Super Phosphate and Muriate of Potash. As per the current policy farmers who are cultivating Paddy for an extent not exceeding 02 hectares are entitled to obtain paddy fertilizer at a subsidized price.

Fertilizer Needs Assessment Process

Prior to the season, chemical fertilizer need is assessed by the Department of Agriculture based on the agri ecological zones and irrigation systems. They will also consider cultivation targets before issuing fertilizer recommendations through the area Agrarian Services.

Product
Characteristics
Nitrogen (N)
promotes rapid plant growth and improves grain yield and grain quality. N is generally the most limiting nutrient as it is needed in large amounts and is readily lost as a gas (volatilized) and by leaching (washing out of the root zone).
Phosphorus (P)
essential for root development, tillering, early flowering, and ripening. It is especially deficient in sandy soils with low organic matter, very acidic soils and alkaline soils.
Potassium (K)
essential for root growth and plant vigor. It also helps fight against lodging and improves the crop resistance to diseases. Potassium can quickly become a yield limiting factor in high yielding rice fields when the straw is removed from the field. Rice paddy straw is rich in K!
  • Zinc and sometimes sulfur deficiencies are much less frequent but can be important locally.