These are rice seedlings planted in planting trays, put in basin, submerged. I apply foliar fert 18:18:18 + TE once every 2 days and also granule fert 20:10:10 + TE once.
The leaf tips, some become yellow, some dry up. What could be the problem? Is it potassium deficiency?
Yes I think so, Potassium is essential to many plant functions and provides strength to cell walls in rice plants. K deficient tissue is often accompanied by dark brown necrotic spots, and in severe cases can cause leaf tips to turn yellow-brown eventually “drying up” and becoming necrotic.
Yes. it looks so. But Ca deficiency may also cause leaf tip burns but usually associated with leaf malformation.
Yellowing, spots of dead tissues, and weak stems & roots are all indicative of lacking enough potassium in plants.
The photo suggests that the K deficiency is not very high so if you switch to fert. 20:20:20 you may solve the problem. Best wishes for success.
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