초록 ▼

□ 과제명 : 바닷물을 이용한 친환경농산물 생산기술 개발
▶ 연구목적 :
○ 바닷물을 활용한 친환경 잡초관리 기술개발
○ 친환경 농산물 생산을 위한 바닷물의 농업적 활용 매뉴얼 발간
○ 바닷물을 활용한 친환경 병해충 방제효과 검정 및 기술 실용화
▶ 주요 연구내용 :
○ 바닷물 및 천일염을 사용하여 잡초방제 효과를 구명하고, 국내연안의 바닷물의 특성을 분석하여 친환경 유기농가들은 물론이고 관행농가에서도 친환경농산물 생산을 위하여 바닷물을 올바르게 활용할 수 있는 기술개발
- 국내 연안의 바닷물의

□ 과제명 : 바닷물을 이용한 친환경농산물 생산기술 개발
▶ 연구목적 :
○ 바닷물을 활용한 친환경 잡초관리 기술개발
○ 친환경 농산물 생산을 위한 바닷물의 농업적 활용 매뉴얼 발간
○ 바닷물을 활용한 친환경 병해충 방제효과 검정 및 기술 실용화
▶ 주요 연구내용 :
○ 바닷물 및 천일염을 사용하여 잡초방제 효과를 구명하고, 국내연안의 바닷물의 특성을 분석하여 친환경 유기농가들은 물론이고 관행농가에서도 친환경농산물 생산을 위하여 바닷물을 올바르게 활용할 수 있는 기술개발
- 국내 연안의 바닷물의 특성과 저장기간에 따른 주요 성분변화 구명
- 바닷물의 농업적 활용 매뉴얼 책자발간으로 전국의 농업기술센터에 효율적 기술지도 체계 확립
○ 주요 원예작물별 바닷물의 안전사용 기준설정 연구
- 주요 채소작물에 바닷물 안전사용 기준을 설정하였음
- 주요 채소 작물에 바닷물을 안전사용 농도로 처리했을 때는 생육 및 품질에 유의성 있는 차이가 없었음
○ 바닷물 처리가 작물 및 토양환경에 미치는 영향
- 바닷물 안전사용을 위한 토성별 EC(dS m-1) 기준설정
○ 바닷물 및 천일염 용액의 희석 농도에 따른 작물별 병해충 방제효과 검정으로 고추흰가루병, 고추 풋마름병, 파밤나방 등 무처리 대비 유의적인 방제효과를 검정
- 바닷물 처리 농도별 작물 피해 검정 수행 : 친환경 병해충 관리를 위한 바닷물의 안전사용법 제시
- 농가실증을 통하여 호밀 녹비 윤작과 바닷물의 복합적인 처리에 의해 고추 풋마름병 예방기술 등 실용화
○ 바닷물을 이용한 병 방제효과 시험은 벼, 보리, 밀, 콩에 발생하는 도열병, 흰잎마름병, 붉은곰팡이병, 흰가루병, 자주무늬병, 미이라병, 불마름병, 세균성점무늬병에 대하여 수행
- 벼, 보리, 밀, 콩에 발생하는 병 방제에 효과가 없었음

Abstract ▼

Agriculture using seawater or natural salts for environment-friendly agricultural products is recently increasing, but it was caused the salt accumulation of soil and impact on crops by excessive use of seawater and natural salts. To evaluate salt accumulation and effects on crops by seawater or nat

Agriculture using seawater or natural salts for environment-friendly agricultural products is recently increasing, but it was caused the salt accumulation of soil and impact on crops by excessive use of seawater and natural salts. To evaluate salt accumulation and effects on crops by seawater or natural salts, this study was conducted at the organic cultivation fields which garlics were planted at the autumn of before year. The treatments were as follows; 1) water of 3,865 L ha^-1 (control), plots applied 1 time, 2 times and 3 times with seawater of 3,865 L ha^-1) no natural salts (control), plots applied 100 ~ 600 kg ha^-1 with natural salts. Soil samples were taken from the 0- to 25-cm depth at 10 days and 69 days (harvest time) after treatments in seawater plots, at 12 days and 92 day (harvest time) after treatments in natural salts, respectively. The results showed that the concentration of Electrical Conductivity (EC), Exchangeable Na (Ex. Na) and Cl were increased by application of seawater and natural salts. But, pH and exchangeable cations (K, Ca and Mg) had not significantly differences among treatments. In 3 times plots of seawater, the level of EC, Ex. Na and Cl-^- were increased more 1.1, 2.1, and 3.3 times than Control. In 600 kg ha^-1 plots of natural salts, the level of EC, Ex. Na and Cl-^- was were increased more 2.1, 4.5, and 13 times than Control. EC, Ex. Na, and Cl-^- were higher in the top 5 cm of soil and decreased with depth at 10~12 days after seawater and natural salts, but were decreased by of in the plower layer(0~15 cm) at the harvest time because they were leached by natural rain. To The uptake of inorganic elements such as Total Nitrogen (T-N), Calcium (Ca), Magnesium (Mg), sodium (Na), iron (Fe), Manganese (Mn), and Zinc (Zn) of garlics were decreased but that of Chloride (Cl) increased adversely.
For scientific verification if traditional seawater agricultural techniques are effective for crop pest management, we investigated control efficacy of diluted saline solution from seawater or bay salt against 5 plant pathogens and 5 insect pests on vegetable crops such as pepper, green onion and strawberry. As a result over 30 times of diluted saline water (NaCl >1%) decreased more 70% conidial production of Leveillula taurica on pepper, and injury level of Lyriomyza chinensis and Spodoptera exigua on green onion. Injury levels of strawberry by fungal pathogens, Botrytis cinerea and Spharotheca humuli were decreased with diluted saline water, and density growth rate of cotton aphid, Aphis gossypii , was decreased on cucumber treated with x10 diluted saline water (NaCl 0.3%). Especially, preventive control efficacy of bacterial wilt, Ralstonia solanacearum, with seawater (x1) treatment into soil during rainy season increased additively after winter-rye rotation. In addition, seawater (x1) spraying on green onion was safe to spiders and soil quality over 12 times of treatments in greenhouse. Thus, pest control techniques using seawater or bay salt solution are more safe than chemical pesticides and able to prevent crops against pathogens and insect pests inhabited on the surface of leaf or root tip. However, undiluted (NaCl 3.3%) or x10 diluted saline water resulted in salinity stress such as 'firing' of vegetable leaves and growth inhibition of green onion. Comprehensive consideration from this study, therefore, suggests a safety usage of seawater for organic crop pest management.
The disease control efficacy by seawater was investigated to the major crop diseases such as rice blast, bacterial leaf blight, berley fusarium head blight, powdery mildew, soybean pod and stem blight, bacterial pustule, and purple blotch. As a result, the disease control effect was not appeared any cases of the treatment time, the concentration, and the number of treatment. And the growth inhibition of the pathogen was not effectively in vitro test. On the contrary, any pathogen such as Fusarium graminaerum, Cercospora kikuchii , Pseudomonas syringae pv. glycinea, and Xanthomonas campestris pv. glyciens was promoted at the diluted seawater.
The results of an experiment to investigate the safety dilution endpoint of seawater, salt disorder occurs in more than 10-fold concentration of seawater to rice and soybean, and more than 20-fold concentration of seawater to berley. Rice and wheat yield loss due to the salt water treatment did not appear. But in case of soybean, more than twice treat with seawater showed a significant yield reduction.

목차 Contents

• 제출문 ... 1
• 요약문 ... 2
• SUMMARY ... 6
• 제1장 서 론 ... 8
• 제2장 국내외 기술개발 현황 ... 9
• 제3장 연구개발 수행내용 및 결과 ... 10
• 제1절 바닷물을 활용한 친환경 잡초관리 기술개발 ... 10
• 제2절 주요 원예작물별 바닷물의 안전사용 기준설정 연구 ... 33
• 제3절 바닷물 처리가 작물 생육 및 토양환경에 미치는 영향 ... 56
• 제4절 바닷물을 활용한 친환경 병해충 방제기술 개발 ... 78
• 제5절 바닷물 농도와 처리시기에 따른 주요 식량작물 병해 방제 방법 개발 ... 87
• 제6절 발효해수를 활용한 취나물의 생장촉진 ... 110
• 제7절 바닷물처리 농산물의 기능성성분분석 ... 121
• 제8절 갯벌바닷물 이용 채소류 병해충방제 실증시험 ... 136
• 제4장 연구개발 목표 달성도 및 대외기여도 ... 144
• 제1절 목표대비 대외달성도 ... 144
• 제2절 정량적 성과(논문게재, 특허출원, 기타)를 기술 ... 144
• 제5장 연구개발결과의 활용계획 ... 147
• 제6장 중요 변동사항 ... 148
• 제7장 참고문헌 ... 148
• 참고 1 연차평가 지적사항 및 조치결과 ... 152
• 참고 2 주요연구 성과 ... 153
• 주요 결과 요약서 ... 154
• 끝페이지 ... 154