Use of a germination bioassay to test compost maturity in Tekelan Village

• Published in: E3S web of conferences Vol. 31; p. 5012
• Main Authors: Oktiawan, Wiharyanto, Zaman, Badrus, Purwono
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2018
• Subjects: Agricultural runoff; Agricultural wastes; Animal wastes; Bioassays; Cattle manure; Composting; Composts; Distilled water; Dung; Farms; Filter paper; Germination; Groundwater; Horticultural crops; Liquid fertilizers; Livestock; Livestock farming; Seeds; Slurries; Solid wastes; Substrates; Toxicity; Toxicity testing; Vigna radiata; Wastewater
• DOI: 10.1051/e3sconf/20183105012
• EISSN: 2267-1242
• ISSN: 2267-1242; 2555-0403

Livestock waste from cattle farms in Tekelan village, Getasan Subdistrict, Semarang Regency can be grouped into three types, namely solid waste, slurry and waste water. Solid waste (cow dung) was processed into compost, while slurry and waste water were used to make liquid fertilizer. This compost was used as a component of planting media in horticultural crops and potted plants production. We evaluated the toxicity (phytochemical and ecotoxicological) test of compost by using germination index (GI).
Vigna radiata
seeds are sown on filter paper dampened with compost extract for different times. GI was calculated by relative germination (G) and relative radical length (L). The germination index (GI) = G / G0 x L / L0 x 100, where G0 and L0 are values obtained by distilled water as a control. The results showed that germination bioassay and radical length using aquades and groundwater in Tekelan village did not affect the radical length of
Vigna radiata
. Technically, groundwater in Tekelan village can be used as a germination bioassay control. The cow dung compost substrate appears to have a major influence on compost toxicity. Mature compost was produced on day 14 with a GI of 104.03.