Potassium Dynamics under Sub Surface Drip Fertigation System on Banana cv. Rasthali

Banana demands very high quantity of potassium for its growth and development. It occupies an
important place not only with regard to its content in plant tissues but also for its role in physiological
and biochemical functions as many of the experimental results shown that adequate supply of
potassium fertilizers not only increased the growth and yield of banana but also improved the quality
of fruits, physiology of the plant and induce resistance against biotic and abiotic stresses. The soil
sampling was done at emitting point (laterals placed at 25 cm depth of soil from surface) and 15 cm
horizontally away from the emitting point of the same lateral. Similarly, the soil samples were also
collected from 0-25, 25-50 and 50 -75 cm depth of profile (vertical) between the drippers in 24 hours
after fertigation at flowering stage of the crop. The soil was air dried, powdered and passed through a
2 mm sieve and stored in clean polythene bags. The available potassium both in horizontal and
vertical dimensions were mapped by using Surfer 7 software. The main aim of this study is to known
potassium distribution at different depth in sub surface drip fertigation system in banana.