• Korean Journal of Organic Agriculture
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• v.19 no.1
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• pp.93-107
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• 2011

This research was carried out to investigate invertebrate fauna with organic and conventional pear orchards, which used four collected methods; soil sampling for soil microorganism, pitfall, malaise, and black light trap for over ground species. Collected species were 37 species, 1,184 individuals in organic and 28 species, 501 individuals by soil sampling in conventional pear fields. Those were 38 species, 646 individuals and 29 species, 440 individuals by pitfall trap, 55 species 650 individuals and 47 species, 508 individuals by malaise trap, and 23 species, 201 individuals and 9 species, 42 individuals by black light trap. Collembola was collected 389 individuals in organic which was 5 times than in conventional in soil sampling. In pitfall trap, that was 183 individuals which was 3 times. The diversity indices of organic pear orchards were 1.956 in May, 2.638 in August and those of conventional was 1.426 in May, 2.011 in August in soil sampling. In pitfall trap, the dominant species were spiders, collembollan, and coleopteran. Among Coleoptera, indicator insects for the evaluation of agricultural environment suggested were Eusilpha jakowelewi as organic pear orchard and Anisodactykus punctatipennis and Pheropsophus jessoensis as conventional. Malaise trap was collected dominant species as Diptera and Hymenoptera of Braconidae and Ichneumonidae. The diversity indices of organic pear orchards were 2.952, 3.120, and 2.010 in pitfall, malaise and black light trap in over ground invertebrate sampling. The highest diversity was in malaise trap. The higher diversity indices, the lower dominance indices.

• Agrochemical news magazine
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• v.25 no.5 s.198
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• pp.12-16
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• 2004

• Korean Journal of Agricultural and Forest Meteorology
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• v.23 no.2
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• pp.108-121
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• 2021

Field studies at Suwon, Cheorwon, and Jinbu were carried out to determine the relationship between mean temperature from transplanting to heading (MT) and growth at heading stage of rice. P lant height (P H) and dry weight (DW) at heading stage were significantly correlated with MT, showing second degree polynomials. The optimal temperatures for PH and DW were 23.2 ℃ and 22.8 ℃, respectively. Little differences in rice growth among soils collected from the experimental sites and the temperature-response in a phytotron study supported that MT was the main determinant of the growth shown in the field study. Though number of days to heading increased as MT decreased, cumulative temperatures (CT) affected by sites and MT for given varieties were fairly constant. When applying specific CT for each of the varieties to the temperature in North Korea, (1) five regions (Kaesong, Haeju, Sariwon, Nampo, Pyongyang) were suitable for early to mid-maturing varieties and (2) 14 regions (Yongyon, Singye, Anju, Kusong, Sinuiju, Changjon, Wonsan, Hamhung, Pyonggang, Yangdok, Huichon, Supung, Sinpo, Kanggye) were suitable only for early-maturing varieties. In (1) regions, the similar extent of growth with that in Suwon could be achieved when mid-maturing varieties grown in Suwon are cultivated. Among (2) regions, early-maturing varieties are expected to demonstrate the similar extent of growth with that in Cheorwon in 9 regions except Hamhung, Kanggye, Pyonggang, Yangdok, and Sinpo. For Hamhung and Kanggye, the target PH was assessed as 4cm higher than that shown in Cheorwon. P lant height of 8-14cm and DW of 2-4g per hill greater than those shown in Cheorwon were the target growth for P yonggang, Yangdok, and Sinpo to attain the similar amount of growth with that in Cheorwon. It is suggested that rice varieties for North Korea could be bred by adjusting the target growth at the breeding sites in South Korea.

• The Hankook-Saengyark Bo
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• no.238
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• pp.5-5
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• 2000

인삼 뒷그루 작물 6종 선발(하수오$\cdot$더덕$\cdot$고추$\cdot$산약$\cdot$도라지$\cdot$만삼등) - '만삼' 재배 본격연구(경기도 농기원 북부시험장) - 구기자 시설 재배법 확립(60cm*20cm 간격 심으면 수량 향상) - 홍화 하우스재배법 확립(경북도 농업기술원)

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.2 no.11
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• pp.67-75
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• 1981

딸기는 맛과 향기가 독특할 뿐 아니라 색깔이 아름답고 비타민과 무기물의 함량이 풍부하여 겨울철과 이른 봄철 과채류의 총아로 등장하여 그 수요가 날로 늘어가고 있으며 수익성도 크게 보장될 수 있어 재배면적이 확대되어 가고 있다. 겨울철 농한기를 이용한 수익성 높은 딸기재배요령에 관해 알아본다.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.94.2-95
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• 1999

봄과 가을에 단기성 사료작물로 주로 재배되고 있는 귀리의 재배시기별 생육특성을 조사하기 위하여 중부지방인 수원에서 '96년부터 '98년까지 품종의 숙기군별 재배시기에 따른 생육특성 및 수량을 조사하였으며 그 결과를 요약하면 다음과 같다. 1. 출수기는 봄 재배에서는 조생종이 5월 20-26일, 중생종은 6월 5-6일 경에 출수하여 10-15일 정도 차이가 있었다.(중략)

• Journal of the Korean Home Economics Association
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• v.42 no.4
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• pp.187-194
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• 2004

The concentration of potato(Solanum tuberosum L.) glycoalkaloids(PCA) (i.e., ${\alpha}$-chaconine and ${\alpha}$-solanine) in Korean cultivated potato plant, and in the different varieties, parts and weights of the potato tubers, were determined by high-performance liquid chromatography(HPLC). The highest concentrations of PGA in potato plants were found in the roots, followed by the stems and leaves. A large quantity of PGA existed in the periderm of 'Atlantic' potatoes, whereas 'Irish Cobbler' contained the lowest amount in five cultivated potato tubers.'Irish Cobbler' potatoes were divided into three parts and the PGA content in each part was determined. It was found that both of the end parts of the potatoes contained higher PGA than the middle part. The PGA contents in four different sizes of potatoes increased toward the smaller size. Thesignificantly high level of PGA was contained in the smallest size potato tubers, which have been used widely for Korean cooking.

• Proceedings of the Korean Society of Crop Science Conference
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• 1999.05a
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• pp.120-121
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• 1999

1. 충북대학교 박물관팀이 충북 청원군 옥산면 소로리에서 구석기시대 유적지를 발굴하는 과정에서 13,010BP로 추정되는 상위토탄층에서 고대형 탄화벼가 출토되었고 36,350BP 이전으로 추정되는 하위토탄층에서 유사벼가 출토되었다. 2. 고대형벼는 11개의 단립형과 1개의 장립형이었다. 장립형벼는 영피표면에 융모가 없고 황금색인(Smootn and gold-hull) 세장립이었다. 그 크기는 지금의 세장한 indica 와 비슷하였다. 3. 유사벼는 영표면에 융모가 있고 깍지(莢)모양으로 되어있는 것(유사벼-1)과 영표면에 융모없이 미끈한것(유사벼-2)으로 2종류가 있었다. 이들의 크기는 모두 벼알과 비슷하였다. 4. DNA 분석결과 고대벼는 지금의 재배종 japonica 나 indica 와는 차이를 보였다. 장립종은 시료가 부족하여 분석하지 못하였다. 유사벼-1은 재배종 벼와 약간 유사한점이 보였으나 유사벼-2는 유사점이 없었다. 5. 고대벼에서는 쌍봉돌기(Bi-peak protuberences)가 있었으나 유사벼-1 과 유사벼-2에서는 이것이 없었다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2022.09a
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• pp.52-52
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• 2022

제주도 서귀포시와 경북 안동시에서 사마풀속(Murdannia Royle)에 속하는 미기록 외래식물인 Murdannia nudiflora (L.) Brenan를 발견하여 보고하고자 한다. Murdannia nudiflora는 열대 아시아 원산으로 아프리카, 아메리카 대륙뿐만 아니라 우리나라와 가까운 일본에도 도입되어 있다. 종소명인 'nudiflora'는 본종의 조락하는 소포엽의 특징을 지칭하는 것으로 추정되며, M. nudiflora는 소포엽 외에 국내 자생하고 있는 사마귀풀[M. keisak (Hassk.) Hand.-Mazz.]과 뿌리, 꽃, 열매 및 종자의 외부형태로 쉽게 구분할 수 있다. M. nudiflora는 사마귀풀과 달리 뿌리줄기가 없고, 말단 혹은 액생하는 화서에 여러 개의 꽃이 피며, 꽃은 수술 2개, 헛수술 2-4개를 가지고, 열매는 자실 당 2개의 종자를 가지며, 종자는 작은 구멍이 있는 망상형 표면을 가진다. M. nudiflora는 닭의장풀과(Commelinaceae)에 속하는 분류군 중에서도 병해충을 유발하여 작물의 생산성을 감소시키는 잡초로 악명이 높으며, 주로 목화, 벼, 참깨 등과 같이 주요 작물이 재배되는 경작지에서 발견되는 것으로 알려져 있다. 본 종의 발견지들은 모두 해당 작물을 재배했던 것으로 추정되는 경작지로 M. nudiflora는 수입된 재배종 종자와 섞여 비의도적으로 도입된 것으로 보인다. 본 연구에서는 M. nudiflora의 화상자료 및 형태적 기재와 함께 국내 근연 분류군과 구별할 수 있는 검색표를 제시하고자 한다.

• Korean journal of applied entomology
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• v.48 no.3
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• pp.281-284
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• 2009

Seventy two species of armored scale have been recorded from the Korean peninsula since late 1920s. Nine of these species were obtained from greenhouses. Of these 9 armored scale species, 7 species are considered to have failed to colonize fields or greenhouses and 2 species, which were collected from pineapple plants, Tillandsia plants and cactus trees in greenhouses, were never taken from the exterior environment.