PENGARUH INOKULASI CACING TANAH (PONTOSCOLEX CORETHRURUS FR. MULL) TERHADAP SIFAT FISIKA KIMIA TANAH DAN PERTUMBUHAN TANAMAN KACANG HIJAU (TRIGNA RADIATA L. WILCZEK) VARIETAS WALET

• Main Author: Utami Safitri, Diah
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/4902
• Institution: Institut Teknologi Bandung

<b>Abstract:<p align=\"justify\"> <br /> The effect of earthworm inoculation on soil physical and chemical properties and the growth of mung bean in experimental pot had been studied. Earthworms were inoculated at four different densities 0 (Co), 4 (C4), 8 (C8) and 12 (C12) in pots containing clay : humus : sand (5 :3 : 2) dry weight and kept for 120 days and cow dung were applied ad libitum. The control (without earthworms inoculation) consisted of two groups ; with and without dung (Co-and Co+). The level of cellulose decomposition and the rate of microorganism respiration were measured every 30 days. Seeds of mung bean were planted in pots and kept for 42 days. Soil physical and chemical properties and plant biomass were measured at the end of the experiment. The results of this experiment indicated that the rate of microorganism respiration was highest in C12 treatment and significantly different (p < 0,05) from Co- and Co+ and cellulose decomposition level was also highest in C12 treatment compared to Co-. Soil physical analysis indicated that total porosity increased significantly in C8 and C12 treatment compared to Co- and Co+. Water permeability increased significantly in C4 treatment compared to Co-. The number of aggregates with low stability increased in accordance with the increasing number of earthworms. Soil chemical analysis indicated that sol pH increased due to earthworm inoculation. Organic C decreased with the lowest decreasing in C12 treatment and the highest in Co-. The N,P,K,Ca and Mg level increased in all treatment compared to Co- and Co+. The plant height increased significantly in C8 and C12 treatment compared to Co- and Co+. Furthermore plant biomass increased significantly in treatment C12 compared to Co- and Co+. It can be concluded that inoculation with earthworms could change the soil physical and chemical properties and improved conditions for the growth of mung bean.