초록

○ 검은별무늬병 약제저항성 검정방법 및 예측프로그램 개발
○ 친환경자재와 화학농약 혼용 및 교호살포 효과시험
○ 생육시기별, 병해충별, 약제별 방제적기 구명

Abstract ▼

To find out the fungicide resistance for the pear scab, conidial suspensions collected from 22 pear orchards were inoculated and then commercial formulation of benzimidazole and sterol demethylation inhibitors(DMI) were applied on the pear leaves. At three of 22 areas in 2008, pear scab couldn't con

To find out the fungicide resistance for the pear scab, conidial suspensions collected from 22 pear orchards were inoculated and then commercial formulation of benzimidazole and sterol demethylation inhibitors(DMI) were applied on the pear leaves. At three of 22 areas in 2008, pear scab couldn't control even by the fungicide application of benomyl, difenoconazole, and fenarimol. To develop the symptoms on the pear leaves, drop inoculation resulted in stable pathogenesis after 20 days and made the haloes and dark-brown necrosis around the inoculated positions. Based on the ycelial growth on the PSA media mixed by four fungicides, minimum inhibitory concentration and EC50 were calculated. Benomyl for Ulsan, Namyangju, Namwon, hexaconazol for Naju, Ulsan, Namwon, Fenarimol for Naju and Namyangju, difenoconazole for Naju and Ulju were decreased severely in their sensitivity. Entering the list of fungicides applied for the last two years into forecasting program can make forecasting values out to percentage. By the field inoculation tests the forecasting values practically similar with results for triazoles but not for pyrimidine.
The purpose of this study was to assess the possibility of prevention on the pear rust, pear scab, and pear abnormal skin stain symptom etc. in the ‘Niitaka’ pear. The result of inoculation of pear scab(V. nashicola) conidium has shown that there are possibilities to prevent pear scab(V. nashicola). The incidence of infected leaves on NaDCC ,000ppm and NaDCC 750ppm compare to the untreated control are 26.2% and 23.8% respectively. NaDCC examined in this study showed no significant reduction of the pear disease by pea rust(G .asiaticum), pear scab(V. nashicola), and pear abnormal skin stain symptom compare to the controlled fungicide. To use a NaDCC during the flowering stage of pear in full bloom, the germination rate is different from each pear variety. However, pollen germinates was not damaged normally from NaDCC. When the fertilization rate of the fruit in the early flowering stage and the full bloom stage are compared, it was shown more than 92% in both periods. In particular, spraying each 1,000ppm, 750ppm and 500ppm of NaDCC during the early flowering stage have resulted in high fertilization rate as more than 98%. This is considered that it is the most effective season to spray NaDCC for high fertilization rate. When pears are soaked in 750ppm of NaDCC for one minute and five minutes in vitro, the pathogen which cause pear abnormal skin stain symptom have been completely inhibited from growth. The incidence of pear abnormal skin stain symptom in cold store has decreased 49.3% after soaked in NaDCC for one minute and 60% after soaked for five minutes.

목차 Contents

• 제출문 ... 1
• 요약문 ... 2
• SUMMARY ... 3
• 제 1 장 서론 ... 6
• 제 2 장 국내외 기술개발 현황 ... 9
• 제 3 장 연구개발수행 내용 및 결과 ... 12
• <제 1세부과제> 배 검은별무늬병 약제저항성 조기진단 및 관리법 확립 ... 12
• 제 1 절. 실험방법 ... 12
• 제 2 절. 연구결과 ... 14
• 제 3 절. 적요 ... 21
• <제 2세부과제> 배 주요병해 환경친화적 방제체계 개발 ... 22
• 제 1 절. 배 주요병해 발생생태 조사 ... 22
• 제 2 절. 배 생육시기별 환경친화적 병해 방제시험 ... 27
• 제 3 절 배검은별무늬병 방제용 친환경농자재의 효과 검정 ... 29
• 제 4 절 NaDCC 처리에 의한 배 주요변해 방제효과 ... 30
• 제 4-1 절 NaDCC 처리에 따른 화분발아율 및 배 수정율 조사 ... 31
• 제 4-2 절 NaDCC 처리에 따른 배검은별무늬병원균 억제효과 시험 ... 34
• 제 4-3 절 NaDCC 처리에 따른 배 주요병해 방제효과 ... 36
• 제 5 절 배 주요병해에 대한 친환경 방제 효과 시험 ... 39
• 제 6 절 배 친환경 병해 방제 개선안 ... 41
• <제 3세부과제> 배 친환경농자재 선발 및 방제 효율 증진 시험 ... 42
• 제 1 절 배 친환경자재 선발 및 방제 효율 증진 시험 ... 42
• <제 4세부과제> 배 주요 해충 환경친화적 방제체계 개발 ... 64
• 1절 연구수행 방법 ... 64
• 2절 연구결과 및 고찰 ... 66
• 3절 적요 ... 77
• <제 5세부과제> 배 병해충 방제를 위한 괘대전 최적 약제 살포시기 구명 ... 78
• 1절 연구수행 방법 ... 78
• 2절 연구결과 및 고찰 ... 80
• 3절 적요 ... 89
• 제 4 장 연구개발목표 달성도 및 대외기여도 ... 90
• 1절. 목표대비 대외달성도 ... 90
• 2절. 정량적 성과 ... 91
• 제 5 장 연구개발결과의 활용계획 ... 93
• 제 6 장 연구개발과정에서 수집한 해외과학기술정보 ... 93
• 제 7 장 기타 중요 변동사항 ... 93
• 제 8 장 국가과학기술종합정보시스템에 등록한 연구장비 현황 ... 93
• 제 9 장 참고문헌 ... 94
• 주요 결과 요약서 ... 101