Application and Response Two Different Calcium Nutrient Treatment on Sweet Corn Growth (Zea mays saccharata Strutt.) in Ultisol

Abstract

Sweet corn is a crop that has a very good nutrients and tastes sweet. Ultisol is one of the soil that spread vastly in Indonesia, up to 25% of the Indonesian total terrestrial area. Ultisol is acidic soil, hence calcification can be applied to deal with it. The purpose of this research was to determine the growth response of sweet corn in two sources of calcium nutrients applied to ultisol soil. This research was conducted in the gauze of the Faculty of Agriculture, the University of Sumatera Utara with an altitude of ± 32 m above sea level starting from October 2017 to December 2017. This research used a Non Factorial Completely Randomized Design with 7 treatments and 4 repetition, the treatment of which was calcium nutrient, shell egg (9.22 g / 15 kg soil), eggshell (13.84 g / 15 kg soil), eggshell (18.45 g / 15 kg soil), dolomite 1 x Al dd (equivalent to 9.22 g / 15 kg of soil), dolomite 1.5 x Al dd (equivalent to 13.84 g / 15 kg of soil), dolomite 2 x Al dd (equivalent to 18.45 g / 15 kg of soil). The results showed that the two sources of calcium nutrients (eggshell or dolomite) applications had no significant effect on plant height, leaf number, stem diameter, canopy, and root wet weight, and canopy and root dry weight.