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The formulation of coal waste (4 million t year -1 ) and market waste (175.000 t year -1 ) is a potential development of alternative ameliorant for marginal and swamplands. The purpose of this study was to examine ameliorant formulations from coal and market waste to improve pH, available P, and CEC of Ultisols and Peat. The step I of the study used a completely randomized design with 3 replications, namely A = coal waste (100 g); B = market waste (100 g); C = 1:1 (50 g : 50 g); D = 2:1 (66.7 g 33.3 g -1 ) and E = 1:2 (33.3 g 66.7g -1 ). The step II of the study used a completely randomized design with 3 replications in 3 formulations namely: A = best formulation (100 g); B = best formulation + 10% [Ca(OH) 2 ] (10 g 100 g -1 ) and C = best formulation + 10% [CaMg(CO 3 ) 2 ] (10 g 100 g -1 ). The step III of the study used a completely randomized design with 3 replications namely: A = 0 t ha -1 (0 g 500 g -1 soil); B = 10 t ha -1 (2.5 g 500 g -1 soil); C = 20 t ha -1 (5.0 g 500 g -1 soil); D = 30 t ha -1 (7.5 g 500 g -1 soil); E = 40 t ha -1 (10.0 g 500 g -1 soil) and F = 50 t ha -1 (12.5 g 500 g -1 soil). The results of the study showed that application of ameliorant formulations from coal and market waste with 10% [CaMg(CO 3 ) 2 ] at 50 t ha -1 increased pH, available P and CEC of Ultisols and peat, respectively by 0.60 units, 2.11 ppm P and 10.83 cmol c kg -1 on Ultisols, and 0.33 units, 2.64 ppm P and 68.86 cmol c kg -1 in peat, compared to control.

The Inceptisol of Karangploso Malang has low pH (5.33) and low C-organic content (1.39%). Efforts can be made to improve these problems through land management with the use of organic fertilizer. Bokashi is one of the composts produced from fermentation process with EM4 which can improve soil chemical properties, because bokashi has elements of N, P, K, Na, Ca, and Mg respectively 1.22%, 0.53%, 1.71%, 5.64%, 0.62% and 2.01%. This study was carried out at the Greenhouse and Chemical Laboratory of Soil Science Department, Agriculture Faculty, Brawijaya University. The design of this research was a completely randomized design with O0 treatment (control); O1 (Bokashi 5 t ha -1 ); O2 (Bokashi 10 t ha -1 ); O3 (Bokashi 15 t ha -1 ); O4 (Bokashi 20 t ha -1 ); O5 (Bokashi 25 t ha -1 ); O6 (Bokashi 30 t ha -1 ) which was repeated 3 times. Parameters measured were pH, CEC, BS, K-exch, Na-exch, Ca-exch, and Mg-exch on 1 MAI (month after incubation), and 2 MAI. The results showed that increasing the dose of bokashi application at 1 MAI significantly increased K-exch and Mg-exch compared to the control treatment, but did not significantly affect pH, CEC, BS, Na-exch, and Ca-exch. Furthermore, increasing the dose of bokashi application on 2 MAI significantly increased pH and K-exch compared to the control treatment, but did not significantly affect CEC, BS, Na-exch, Ca-exch, and Mg-exch.

Application of spent coffee ground compost is expected to improve soil chemical properties of Andisol Ngabab which has low C-organic and N contents, very low P content, and moderate content of Na content. The purpose of this study was to explore the effect of application of Robusta spent coffee grounds compost application on soil chemical properties of an Andisol. This study used a completely randomized design with five treatments and three replications. The treatments tested were P0 (control, without application of spent coffee ground compost), P1 (50% dose of spent coffee ground compost aplication = 10 t ha -1 ), P2 (100% dose of spent coffee ground compost application = 20 t ha -1 ), P3 (150% dose of spent coffee ground compost application = 30 t ha -1 ), and P4 (200% dose of spent coffee ground compost application = 40 t ha -1 ). The results of this study showed that the application of spent coffee ground compost with a dose of 150%= 30 t ha -1 (P3) and dose of 200%= 40 t ha -1 (P4) on an Andisol of Ngabab significantly increased pH, organic-C, total-N, available-P, exchangeable-K (in 2, 6 and 8 weeks), exchangeable-Na, and CEC (in 4, 6 and 8 weeks) compared to control treatment or without application of spent coffee ground compost (P0).

The purpose of this research was to investigate the quality and the best concentration of curcuma juice on salted egg. The method of this research was experimental research with Completely Randomized Design using 4 treatments and 4 replications. The curcuma juice were divided into P 0 (0%), P 1 (25%), P 2 (50%) and P 3 (75%). The variables were free fatty acids, pH and levels of curcumin. The data were analyzed by Analysis of Variance continued by Honestly Significant Difference test method by Tukey if there were sigificant differences among variables. The results of this research showed that the addition of curcuma juice 75% could improve the quality of salted eggs, reduced levels of free fatty acids (0.37%) and increased levels of curcumin salted egg (0.657 ppm). The addition of curcuma juice couldn’t improve the quality of salted egg which was indicated by increased pH of albumin 7.94. The addition of curcuma juice indicated similar result to the control treatment (P0) which was indicated pH of yolk 6.55. Keywords: functional food, curcuma juice concentration