| Summary: | 碩士 === 國立中興大學 === 園藝學系所 === 103 === Tomato plant resudues can be not only polluting but resourceful. This study investigated that microbial composted or fast treated tomato byproduct were mixed with peat moss（P）or coir（C）as the materials. After analyzing physical and chemical characteristic, we used these materials as growing media and found out the better treatment.
The dry tomato plant resudues was shredded into 8 mm pieces and mixed with soybean meal and Trichoderma-and-Bacillus culture in sack. After 5-week composting, the tomato plant resudues was washed with large amout of water and named as TC. The particle size of TC was more medium sized particles, which retain high total porosity (90.90％), high air space (36.90％) and low bulk density. The electric conductivity of TC was 892 μS/cm and pH value was 7.3. The total nitrogen and available phosphorus, calcium and magnesium was higher than other treatments.
The fast treated tomato plant residuce（TF）was processed by Prof. Young and Lab. of Soil Environmental Microbiology and Biochemistry. TF consisted mainly of fine particles which made lower total porosity and high air space. The high total phenol content(3038.0 mg/kg) made TF weak acid(pH 5.8). HPLC analysis showed the tea TF content gallic acid about 3300 mg/kg, which higher than 1000 mg/kg inhibited germination of cucumber and higher than 250 mg/kg inhibited germination of tomato. After waiting for 2 weeks, the total phenol of TF-mixed-P treatment decreased about 40 ％ and became available on growing media.
To test whether TC and TF available, we made the germinatin test. The germination index of cucumber was about 90.4 when 60％TC mixed with P. The germination index of tomato was about 75.4 when 40％TC mixed with P. Therefore the content of TC would be 20％, 40％ and 60％for cucumber seedling, 20％, 30％ and 40％for tomato seedling. The germination index of cucumber was about 97.23 and tomato was 93.48 when 20％ TF mixed with P. Therefore the content of TF would be 10％ and 20％ for both cucumber and tomato seedling.
The seedling index of cucumber and tomato on each mixed-treatment were no significant differences with P which showed the treatments were available on growing media for cucumber and tomato. The highest soluble sugar content of cucumber seedling was on PTF20, and soluble sugar content of tomato seedling on mixed-treatments were higher than P.
The result of height, stem width and fruit number of tomato on the mixed-treatments were no significant differences with P. The best fruit quality was on CTC30, whose fruit size and total soluble solids degree was higher than others.
These results showed that mixed TC 40-60％ or mixed TF20％ with C would be good growing media.
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