Factors controlling organic amendment application rate and long-term change in application rate in Japanese paddy field using longitudinal questionnaire survey dataset (the Basic Soil Environment Monitoring Project, Stationary Monitoring, 1979–1998)
| Autor: | Yasuhito Shirato, Ichiro Taniyama, Ai Leon, Kazunori Kohyama, Toshiaki Ohkura, Yusuke Takata, Hiroshi Obara, Shin-Ichiro Mishima |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Soil Science and Plant Nutrition. 58:104-120 |
| ISSN: | 1747-0765 0038-0768 |
| DOI: | 10.1080/00380768.2012.655675 |
| Popis: | Using data from a longitudinal survey (the Basic Soil Environment Monitoring Project, Stationary Monitoring, 1979–1998, launched by the Ministry of Agriculture, Forestry and Fisheries of Japan), it was found that livestock possession, soil type, utilization form of paddy fields and full-/part-time status of farmers were important factors controlling application rates of organic amendments (OA) in Japanese paddy fields. When data points were categorized in terms of these four factors, application rate of livestock waste compost (LWC) on the basis of fresh weight (FW) varied remarkably. Application rates of LWC decreased during the survey period, whereas rice straw residue (RSR) application rates increased. The smallest LWC application rate (average 0.3 ± 0.2 Mg FW ha−1 for the period between 1994 and 1998) was found among rice (Oryza sativa L.) single-cropping, poorly drained lowland paddy soils (PDLPS) including Histosols, with full-time farmers possessing no livestock. Even among rice single-cropping, th... |
| Databáze: | OpenAIRE |
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