Abstract
Nutrient potassium is critical in plantain (Musa species cv. AAB) nutrition and may play a key role in its vegetative growth and bunch development. Application of 300 kg muriate of potash (K 0) per hectare was 2 beneficial in the plant crop, while a higher rate (400 kg K 0/ha) enhanced growth and yield components (number 2 of hands and fingers/bunch, finger mass, girth and length). Plants fertilized with 400 kg K 0/ha were tallest 2 (3.5m), with largest pseudostem girth (56-58cm), most (11-12) number of functional leaves at flowering and flowered after 9 mouths of vegetative growth. Bunch mass, bunch yield/ha and yield components were significantly (P = 0.05) highest at 300 kg k 0/ha in the plant crop and at 400 kg K 0/ha in the ratoon crop. 22 Heaviest bunches were 8.8 and 9.8 kg/plant in plant and ratoon crops, giving the respective corresponding bunch yields of 15.7 and 16.3 tonnes/ha. An application of 300 Kg K 0/ha would be adequate for sustainable 2 production of false horn plantain in the high rainforest zone of Cross River State, Nigeria.
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