Effect of Waste Product from Ajinomoto (Ami-Ami) for Compost Production.   Supaporn Junrungreang Suangthida Lipimongkol and Preecha Popan   ABSTRACT         Study the effect of waste product from Ajinomoto for compost production was carried out in Chachoengsao province during 1996-1997. The experimental plan was completely randomized block design. There were 8 treatments in 3 replications which consisted of waste from Ajinomoto 6,4,2 and urea 0.2% for making compost from rice straw and baggage. The result in 2 years showed that rice straw was completely decomposed with in 3 month but baggage was gradually decomposed with in 7 month. It indicated that rice straw which used waste from Ajinomoto 6% was the fastest completely decompose and then 4, 2,urea 0.2% which exhibited the same result in baggage. Plant nutrient in compost from rice straw were higher than in compost from baggage. In 1996, It was found that nitrogen phosphorus and potassium in compost from rice straw were in range 0.64-0.88, 0.38-0.47 and 0.48-0.63% while nitrogen phosphorus and potassium in compost from baggage were in range 0.38-0.47, 0.10-0.19 and 0.17-0.21% respectively. In 1997, Nitrogen, Phosphorus and Potassium in compost from rice straw were in range 0.71-1.00, 0.32-0.43 and 0.44-0.64% whist nitrogen, phosphorus and potassium in compost from baggage were in range 0.21-0.31, 0.10-0.19 and 0.20-0.25% respectively.         Keywords : ami-ami, C/N ratio