Organic fertilizer application on performance and production of king grass in acid soil

Abstract

A field experiment was conducted at the experimental site of the Forage Crop Science Laboratory of the Faculty of Animal Agriculture, Diponegoro University. Experiments on acid soils met the level of fertilizer consisting of T0, T1, T2 and T3 were 0, 30 and 60 kg N as urea, and organic fertilizer equivalent to 4,5 % C soil organic, respectively. King grass was planted with 2 spacing orders of 50 cm x 50 cm at the experiment plots 3 x 4 m . Plants obtained basic fertilizer of 50 kg N/ha, 150 kg K2O/ha and 150 kg P2O5/ha. Appearance of the components of growth and dry matter production of King grass on acid soil added-organic fertilizer higher than urea fertilizer or no fertilizer. Increase soil organic matter content to the level of 4.5% organic C can enhance the appearance of King grass on acid soil. Response of soil organic C increased with application of organic fertilizers on the performance of King grass on acid soils is higher than with urea