The Effect of Granular KCl Fertilizer Dosage on K-available, K-uptake, and Yield of Sweet Corn (Zea mays saccharata sturt.) in Inceptisol from Jatinangor
Emma Trinurani Sofyan *
Department of Soil Science and Land Resources, Faculty of Agriculture, Padjadjaran University, Indonesia.
Dirga Sapta Sara
Department of Soil Science and Land Resources, Faculty of Agriculture, Padjadjaran University, Indonesia.
Andriyani Agistin
Agrotechnology Study Program, Padjadjaran University, Indonesia.
*Author to whom correspondence should be addressed.
Abstract
This research aimed to determine the effect and the best granular KCl fertilizer dosage in increasing K-available, K-Uptake, and yield of sweet corn (Zea mays saccharata Sturt.) Talenta variety on Inceptisols from Jatinangor. The method used was a randomized completely block design (RCBD) with nine treatments and three replications. The treatment consists of the without fertilization as control (A; N, P, K (B); ¼ K + N, P (C); ½ K + N, P (D); ¾ K + N, P (E); 1 K + N, P (F); 1¼ K + N, P (G); 1½ K + N, P (H); and 1¾ K + N, P (I). The results showed that granular KCl fertilizer affected available K, K uptake, and sweet corn yields. The dose of fertilizer that had the best effect on sweet corn yield was a combination of 1 K + N, P single with 100 kg ha-1 KCl granules which produced a cob weight of 0.49 kg plant-1 on Inceptisol from Jatinangor.
Keywords: Granular KCl fertilizer, K-available, plant K-uptake, sweet corn, inceptisols