Potassium

Deficiency Symptoms

Necrosis (tip burn) in the interveinal spaces between the main veins along with interveinal chlorosis. Later most of the interveinal area becomes necrotic, the veins remain green and the leaves tend to curl and crinkle.

Management

Green manuring or FYM application may takes care of potassium nutrition of organic rice. In case of potassium deficient soils, legume  crop residues with low C:N ratio @ 6t/ha incorporation at the time of seeding/puddling in addition to FYM and green manuring may take care of potassium requirement of organic rice.