Seung-Hwa Baek

Effect of Mixtures with Lignite and Amino Acid Solution on the Growth of Rice Plant, Chinese Cabbage and Red Pepper, and the Chemical Properties of Soil

For the study of possibility of practical use as an organic farm materials of the mixtures with lignite and amino acid solution, this experiment was carried out to investigate the effects of the mixtures on the growth and the yield of rice plant, chinese cabbage, and red pepper, and the effects of the mixtures on chemical properties of soil. Also, when the mixtures of the lignite plus amino acid solution and the chemical fertilizer were applied to these three crop cultivation area, authors want to know how can the loss in quantity of chemical fertilizer affects the growth and the yield of these crops. As the results, growth of rice plant applied with the mixtures of lignite and amino acid solution was better than that applied with the recommended rate of chemical fertilizer. Especially, the growth of rice plant appeared to be good at the treatment of 150 kg/ha of the mixed lignite with amino acid solution and at that of its mixtures and standard fertilization. Growth of chinese cabbage and red pepper was good at the application of 600 kg/ha of the mixed lignite with amino acid solution and at that of its mixtures and standard fertilization. Yield of rice and chinese cabbage was good at the treatment of 150 kg/ha of the mixed lignite with amino acid solution and at that of its mixtures and standard fertilization, and yield of red pepper was good at the application of 600 kg/ha of the mixed lignite with amino acid solution and at that of its mixtures and standard fertilization. The organic matter content increased and while the exchangeable cation decreased when the lignite mixed with amino acid solution and the loss in quantity of chemical fertilizer applied at paddy field. Incase of these treatments, pH and available phosphorus increase at upland field, but did not change at paddy field.

Cultivation of Oyster Mushroom(Pleurotus ostreatus (Jacq. ex Fr.) Kummer) at Medium with Ca(OH)2 Treatment

This research is aimed to investigate the cultivation method of oyster mushroom[Pleurotus ostreatus (Jacq. ex Fr.) Kummer] at the non-sterilized medium with treatment. Therefore, experiments were carried out to develop non-sterilization method of medium by addition of for omission of heat sterilization progress of medium. General components, minerals and amino acid in Jiri wild type No. 1 (Pleurotus ostreatus) and production cost were analyzed. For the purpose of omission of heat sterilization progress, treatment ratio of (purity 95%) was 5%(w/w) of dry medium. Initial pH of this medium was 11 and then the pH was changed by 9 after the uniform mixing of the medium for half an hour. The various germs occurred 50% and 100% at pH 8 and pH 7 of the non-sterilized medium, respectively. Production of oyster mushroom increased by when the main raw material used corn pith instead of waste cotton. The time required of mycelium culture was 30 days when hypha was cultured at the non-sterilized medium, and pinhead occurred when 2 or 3 days was passed after the time required of mycelium culture. Occurrence of pinhead was most rapid at the condition of , 65% humidity and pH and required of days at thickness of non-sterilized medium. Ca content in 1st harvest oyster mushroom was higher than that in 2nd harvest one, and its difference was . Amino acid content by stipe thickness of oyster mushroom was ranged from 411.2 to both in a pileus and a stipe of 1st harvest mushroom, and from 402.4 to and from 442.6 to in those of 2nd harvest one, respectively. The results of the present study suggest that the non-sterilization medium by addition of is usable with the cultivation of oyster mushroom.