Authors: Asma Begum, Md. Hasanuzzaman Akand, Nahida Sultana*, Fariha Afia Bonni and Muslima Jahan Runia
*Corresponding authour’s Email: nsultanasau12@gmail.com
Abstract
The present experiment was undertaken with the aims to investigate the response of potassium fertilizer and mulches on growth and yield of potato in the field condition during the period from November 2017 to March 2018 at Horticultural farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh. The variety “Diamant” was used as a test crop. Four levels of potassic fertilizer (KCl) viz. K0: (Control), K1: 110 kg ha-1, K2: 140 kg ha-1, K3: 170 kg ha-1 and three types of mulches viz. M0: (Control), M1: Straw, M2: Black polythene were used for the present study. The experiment was laid out in Randomized Block Design (RCBD) with three replications. Different potassium level showed significant influence on most of the parameters and the treatment. The highest yield (27.20 t ha-1) of potato was obtained in K2 treatment whereas the lowest (12.25 t ha-1) was obtained from K0. Considering the different mulches, the highest yield (24.57 t ha-1) of potato was obtained in M1 and the lowest (17.68 t ha-1) was obtained from the M0 treatment. In terms of the combined effect of potassium and mulching, most of the studied parameters were influenced significantly. The highest yield (31.75 t ha-1) was recorded from the combination treatment of K2M1 whereas the lowest yield (9.74 t ha-1) was found in the combination treatment K0M0. Hence, we summarized that 140 kg ha-1 potassium fertilizer with straw mulch gave the maximum output in terms of yield compared with other treatments.
Keywords: Potassium, Mulching, Potato.
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