Effect of Organic and Chemical Fertilizer Application on Growth, Yield, and Quality of Small-Sized Tomatoes

• 作者: Masahiko Tamaki Shunya Nishimori Takamitsu Kai
• 来源期刊: 农业化学和环境(英文)
• 学科: 化学
• 关键词: Small-Sized Tomato Organic Fertilizer Soil Microorganisms Soil Fertility Agricultural Environment Environmental Conservation
• 年，卷（期）: nyhxhhjyw_2020,（3）
• 页码范围: 121-133
• 页数: 13页
• 分类号: O64

摘要

Tomatoes in Japan are generally cultivated under management systems that use chemical fertilizers and synthetic chemical pesticides. However, the continuous use of these fertilizers and pesticides damages the soil environment and reduces the number of soil microorganisms. Organic farming has a relatively low environmental impact compared to conventional farming techniques, but typically has lower and more unstable yields. In this study, we investigated the effect of organic and chemical fertilizer application on growth, yield, and quality of small-sized (cherry) tomatoes. Cherry tomatoes were cultivated using organic and chemical organic fertilizers. Average weight and lateral diameter were significantly higher under organic fertilizer than under chemical fertilizer. In addition, shoot dry weight was significantly higher under organic fertilizer than chemical fertilizer. Lycopene content was significantly higher under organic fertilizer than chemical fertilizer. The total carbon (TC), total phosphorus (TP), total potassium (TK), available phosphoric (SP) and exchangeable potassium (SK) contents, C/N ratio, and pH were significantly higher under organic fertilizer than chemical fertilizer. Bacterial biomass, nitrite (NO</span><span style="font-family:Verdana;">? 2</span><span style="font-family:Verdana;">-N) oxidation activity, nitrification (N) circulation activity, and phosphoric (P) circulation were higher under organic fertilizer than chemical fertilizer. From these results, the study indicates that appropriate controls such as TC, total nitrogen (TN), and C/N ratio of organic fertilizer increased microbial biomass and enhanced nutrient circulation such as N circulation activity and P circulation activity. </span><span style="font-family:Verdana;">These results can be used to improve current organic farming practices and promote soil conservation.