摘要：This study examined the productivity of the legume cover crop puero ( Pueraria javanica ) used as Bali cattle feed on oil palm plantations in the East Kutai Regency in East Kalimantan Indonesia during November 2014-March 2015. Puero plants were grown in a 30 x 30 cm area in 24 plots with 45 plants per plot. Palm oil mill waste and Bali cattle feces were used as organic fertilizer. The plants were either left untreated (U-) or treated with Bali cattle urine (U+). Changes following urine treatment were measured as germination percentage , dry weight yields, leaves and stem weight, leaves and stem ratio, number and weight of root nodules, nutrient content (e.g., organic matter , crude protein , ash, crude fiber, neutral detergent fiber (NDF), acid detergent fiber (ADF)), tannin and phenol, in vitro dry matter digestibility (IVDMD) and in vitro organic matter digestibility (IVOMD). Statistical analysis of comparisons between the two groups were performed using a t-test. The results showed that the germination percentage was under 50% and did not differ significantly between U- and U+. In contrast, treatment of puero plants with urine significantly (p<0.05) affected dry weight production, yield per hectare, nitrogen content and stem production. These results indicate that the addition of urine to fertilizer produced higher (11.8%) puero yields and increased nitrogen content (24.6%). The TDN and digestibility ( dry matter and organic matter ) of puero would be sufficient for use of this plant in cattle feed.
