Pepper cultivation requires a great amount of manual labor, especially for varieties needing support stakes to prevent them bending or breaking in heavy winds or rain. In Korea, it is recommended to secure support stakes and string lines carefully, so as to minimize the risk of damage caused by typhoons. The harvesting of peppers is a labor-intensive process with low rates of mechanization.The removal of stakes is particularly time-consuming during mechanical harvesting, and lodging is a major issue during cultivation and mechanical harvesting. Given increased mechanization during pepper harvesting, it is important to consider these issues when undertaking variety development and cultivation method improvements. Further research and development are required to improve cultivation practices and develop pepper varieties that are more resistant to lodging. Therefore, this study aimed to investigate the impact of different cultivation methods on pepper lodging, thus broadening our knowledge on the desirable architecture of pepper plants required for lodging tolerance.

The term ‘lodging’ in agriculture is usually used when the crops fall from their upright position before harvesting. Various factors may be responsible, including inherent weaknesses in the stem, resulting from low lignin content or small root systems.Weather, such as strong winds or rains, will also likely increase lodging. Insect or disease damage can also weaken the plants, and cultural practices, such as fertilization, irrigation, and cultivation techniques, may increase the risk. Most of the research studies on lodging have been undertaken on cereal crops, but this is also an issue with many vegetable crops, and especially those that require mechanized harvesting. In this review, the issue of lodging in solanaceous vegetable crops is discussed, with an emphasis on the key risk factors and potential areas for future research that can identify damage mitigation strategies.

‘Gwangyoung’, a winter forage triticale cultivar (X Triticosecale Wittmack), was developed at the Department of Rice and Winter Cereal Crop, NICS, RDA in 2018. The cultivar ‘Gwangyoung’ has leaves of wide width, medium length, and green color, and spikes of medium length and yellowish-brown color, and a large grain of yellowish-brown color. The heading date of the cultivar ‘Gwangyoung’ was April 22 which was similar to check cultivar ‘Shinyoung’. Its tolerance or resistance to cold, lodging, wet injury powdery mildew, and leaf rust were also similar to those of the check cultivar. The leaf blade ratio of ‘Gwangyoung’ (27.5%) was higher than that of ‘Shinyoung’ (21.2%). The average forage fresh and dry matter yield of cultivar ‘Gwangyoung’ at milk-ripe stages were 50.0 and 17.6 MT ha-1, respectively, which were higher than those (47.7 and 17.1 MT ha-1) of the check cultivar. The silage quality of ‘Gwangyoung’ was lower than that of the check cultivar ‘Shinyoung’ in crude protein content (5.3%) and total digestible nutrients (61.3%), while was higher than the check cultivar in neutral detergent fiber (58.2%) and acid detergent fiber (34.9%). ‘Gwangyoung’ showed the silage of 1 grade and a grain yield of 6.03 MT ha-1.

‘Choyoung’, a winter forage triticale cultivar (X Triticosecale Wittmack), was developed at the Department of Rice and Winter Cereal Crop, NICS, RDA in 2015. The cultivar ‘Choyoung’ has the leaves of medium width, long length and green color and a medium grain of brown color. The heading date of the cultivar ‘Choyoung’ was April 30 which was 2 days earlier than that of check cultivar ‘Shinyoung’. Its tolerance or resistance to cold, wet injury, powdery mildew, and leaf rust was similar to those of the check cultivar. But the resistance to the lodging of cultivar ‘Choyoung’ was stronger than that of the check. The average forage fresh and dry matter yield of cultivar ‘Choyoung’ at milk-ripe stages were 40.5 and 15.7 MT ha-1, respectively, which were similar to those (40.3 and 16.1 MT ha-1) of the check cultivar. The silage quality of ‘Choyoung’ was higher than that of the check cultivar ‘Shinyoung’ in crude protein content (5.9%), while was similar to the check cultivar ‘Shinyoung’ in acid detergent fiber (33.9%), neutral detergent fiber (57.3%), and total digestible nutrients (62.2%). It showed a grain yield of 5.59 MT ha-1, which was 38% higher than that of the check cultivar ‘Shinyoung’ (4.05 MT ha-1). This cultivar is recommended for fall sowing forage crops in areas in which average daily minimum mean temperatures in January are higher than -10 ℃.

'Dakyeong' (Avena sativa L.), a winter oats for forage use, was developed by the breeding team at National Institute of Crop Science, RDA in 2016. It was derived from a cross between ‘CI7505’(IT133304) and ‘Swan’(IT197920). Subsequent generations followed by the cross were handled in bulk and pedigree selection programs at Iksan and Jeonju, respectively. After preliminary and advanced yield test for 2 years, ‘SO2004009-B-B-10-8-3-9’, designated as a line name of ‘Gwiri91’, were subsequently evaluated for earliness and forage yield during 3 years in four parts such as Jeju (upland), Yesan (upland), Iksan (upland), and Jeonju (paddy), from 2014 to 2016, and finally named as ‘Dakyeong’. Cultivar ‘Dakyong’ has leaves of dark green color, thick diameter culm and long grain of brown color. Over 3 years, the heading date of ‘Dakyeong’ was about 5 days earlier than that of check cultivar ‘Samhan’ (April 30 and May 5, respectively), and their average forage dry matter yield harvested at milk-ripe stage was higher 12% (15.7 tone ha-1) than 14.0 tone ha-1 of check cultivar. Cultivar ‘Dakyeong’ was lower than the check cultivar ‘Samhan’ in terms of the protein content (6.1% and 7.0%, respectively) and total digestible nutrients (62.1%, and 62.5%, respectively), while the TDN yield was more than the check (7.79 tone ha-1 and 7.64 tone ha-1, respectively). Fall sowing cropping of ‘Dakyeong’ is recommended only in areas where average daily minimum mean temperatures in January are higher than -6°C, and it should not be cultivated in mountain areas, where frost damage is likely to occur.

포장조건에서 22종의 옥수수교잡종을 과습조건에서 도복관련형질들의 상호관련성을 검정하였는데 좌절중 (1.0 m, 1.5 m)과 좌절부위등을 평가하였고 주요한 도복 저항성 형질인 좌절중, 간직경, 뿌리건물중, 중심고등의 상호 관련성을 함께 평가하였다. 본시험은 포트시험에서 일차 스크린 한 것을 논에 경사지를 만들어 경사지별로 수분함량과 도복저항성을 비교하기 위하여 관수시기(과습조건)를 파종후 20일, 5엽기, 출웅기, 출사기로 구분하였고 관수량은 100 mm/일 씩 5일간 처리하였으며 조사는 수확기에 수행 하였다. 본시험의 결과 출사기에 1.0 m, 1.5 m 높이에서 좌절중과 중심고는 정의 상관을 보였으며 파종후 20일차에 관수처리구에서는1.0m, 1.5m 모두 좌절강도와 간직경이 정의 상관을 나타냈다. 관수처리 5엽기에서는 높이 1.0 m에서 좌절강도와 간직경간의 강한 정의 상관을 나타냈으며 도복관련 형질인 간직경, 뿌리건물중,지상부 중심고, 좌절중, 좌절고등이지만 관수처리시 이들을 가장쉽게 판별 할 수 있는 방법은 5엽기에 관수처리구가 가장 효율적으로 사료된다.

“DK 537”has been selected by forage crop breeding team at the National Livestock Research Institute(NLRI), RDA and has been determined by the Deliberative Council of the National Agricultural Cooperative Federation(NACF) in 2002, as a new recommended hybr

수도 주요 품종들의 재배방식에 따른 도복 양상과 형질의 차이를 구명하기 위해 내도복성품종 IR8과 IR64중간정도의 내도복성을 나타내는 IR36 그리고 도복성품종인 IR 21820-154-3-2-2-3를 공시하여 각 품종간에 도복을 유발시키는 형질간의 비교와 식물체의 구성성분을 조사하였던 바, 결과를 요약하면 다음과 같다. IR8을 제외하고는 공시된 모든 품종은 손이양재배가 산파재배한 것보다 도복저항상이 크게 나타났으며 수량에 있어서도 대체로 손이양재배에서 높게 나타났다. 산파재배에 있어서 도복에 의한 수량손실은 손이앙에 비하여 0.6톤에서 1.5톤으로 품종에 따라 각각 수량이 감소되었다. 그러나 재배방식에 따른 수도의 생육변이와 수량구성요소는 차이를 보이지 않았으며 줄기내의 칼륨함량은 손이앙재배가 산파재배 보다는 높게 나타났는데 이것이 도복의 저항성을 증대 시킨 것으로 사료된다. 한편 인산이나 규산의 함량은 줄기의 강도를 증대시키는데 아무런 영향도 미치지 못하였다.

This study was carried out to investigate the effects of different cutting times at 0, 10 and 20 days after lodging on the percentage of dead plants and bare ground, live and dead matter build-up, and botanical composition of orchardgrass dominated pastur

Background : When the Platycodon grandiflorum is applied before the rainy season, the increase of the incidence of the Platycodon grandiflorum root rot disease increases greatly. This experiment was carried out to reduce the incidence of rot root rot disease through the lodging protecting method. Methods and Results : Three-years-old Platycodon grandiflorum was subjected to four treatments with no treatment, net installation, cutting stem, and removing bud. No treatment was used as a control, and as a further control, netting was used in the Platycodon grandiflorum to set up a treatment with almost no lodging. In the case of cutting stem, the stem was cut off in the middle of June, leaving more than 60 ㎝ before flowering. In the case of removing bud, blooming just before, the bud was removed. As a result, the coverage rate was the highest at 36.9% in the non - treatment area in the middle of July after the rainy season and 0.4% in the net installation. Compared with the case of cutting a lot of stems, 12.7% of the stem was covered with stones, whereas the stalk was 31.8%, which was close to the untreated stomach. As a result of the change of morbidity rate per treatment, it showed a morbidity rate of 49.7% in case of net installation, compared with 60% or more morbidity rate in case of untreated. Conclusion : As a result, an anti-lodging technic has helped prevent the onset of root rot disease. Further research on how to prevent the lodging of Platycodon grandiflorum using cutting stem will be needed.

‘Daname’ is a foxtail millet(Setaria italica Beauv.) variety developed and registered by Department of Southern Area Crop Science, NICS, RDA in 2014. This variety which collected from IT252182 was developed through pure line selection. ‘Daname’ is a early-maturing variety having 100 days of growth period from seeding to harvesting in Milyang of Korea. The culm length is about 97 cm which is 20cm shorter culm length than standard variety ‘Hwanggeumjo’, and it showed tolerant to lodging in field. The panicle shape is a cylindrical and the length is about 19cm. According to the grain, seed color and dehusked grain colors are orange and yellow and endosperm characteristic is non-glutinous. The yield performance of this variety was about 3.81 t ha-1 in local adaptability test from 2013 to 2014 and it showed similar with standard variety ‘Hwanggeumjo’. As the addition amount of ‘Daname’ in rice increased from 0% to 30% and 100%, the antioxidant ability of ‘Daname’ added rice and hardness/stickiness balances were increased. But we could not find out the difference of hardness/stickiness balances between 0%and 10% addition. So, 10% addition amount was concluded to increase antioxidant ability regardless eating quality of cooked rice. (Variety registration No. 6243)

A new small red bean cultivar, ‘Geomguseul’, was artificially crossed between ‘Chilbo’ and ‘SA8412-3-1-4-3-3-2-3’ in 1998, fixed excellent agronomic characters by pedigree breeding method, and selected for the further trials with the name of ‘Miryang 10’. It was prominent and showed good result, such as high grain quality, lodging resistance, and high-antioxidant activity in the regional adaptation yield trials (RYT) for three years from 2009 to 2011 and released for the public consumption as the name of ‘SA9801-24-4-3-1’ in 2011. ‘Geomguseul’ has a semi-determinate growth habit, yellow flower, green embryonic axis, black seed coat, white hilum, and small spherical seed (12.2 grams per 100 seeds). The average yield of ‘Geomguseul’ was 2.01 MT/ha in the regional yield trials (RYT) carried out for three years from 2009 to 2011 which was a little higher than that (1.98 MT/ha) of the check variety, ‘Chungju’.

This study was carried out to create new popcorn variety. ‘G-Popcorn’ was made by single crossing with two inbred lines, the seed parent, GP3, and the pollen parent, GP4. The hybrid was made in 2009 and selected in 2014 after investigating characteristics for three years from 2012 to 2014. ‘G-Popcorn’ was evaluated on 2 or 3 places in Gangwon-do for three years. ‘G-Popcorn’ showed higher lodging tolerance and popping volume in contrast to the check variety ‘Oryunpopcorn’. The plant height is 213cm indicating 5cm lower than that of ‘Oryunpopcorn’. Also, ration ear height of plant height of ‘G-Popcorn’ is 59%. The weight of 100 seeds was 15.5g, similar to that of ‘Oryunpopcorn’. The popping volume of ‘G-Popcorn’ was about 28.3㎤/g, higher than 25.0㎤/g of ‘Oryunpopcorn’. The yield of ‘G-Popcorn’ was 467kg/10a in regional yield trials for three years, which was 7% higher than that of ‘Oryunpopcorn’.

A new colored soybean variety ‘Jungmo3005’ was developed as a breeding parent. ‘Cheongjakong’ and ‘Geomjeongkong3’ were crossed in 2000. F1 and F2 populations were grown for 2 years and selected by pedigree method from F3 to F5. The preliminary yield trial (PYT) and advanced yield trial (AYT) were conducted from 2006 to 2007, and regional yield trial (RYT) in 9 regions was conducted from 2008 to 2010. ‘Jungmo3005’ is determinate, white flower, green cotyledon, green spherical seed and yellow hilum. Flowering date and maturing date were July 30 and Oct. 7, respectively. Other quantitative characteristics of ‘Jungmo3005’ were similar to ‘Cheongdu1’, but it was more tolerant to lodging and shattering than ‘Cheongdu1’ at RYT field and indoor test. Although ‘Jungmo3005’ showed symptom of mosaic disease in inoculation test at greenhouse, it had high level of resistance to soybean mosaic virus and bacterial pustule diseases at field. The yield of tofu of ‘Jungmo3005’ was more than that of ‘Cheongdu1’. The mean yield of ‘Jungmo3005’ in RYT was 256kg/10a which was 97% of the yield of ‘Cheongdu1’. ‘Jungmo3005’ is expected to be widely used as a breeding parent to cross with other varieties and lines for creating colored soybean cultivars with tolerance to lodging, shattering and bacterial pustule.

‘Hwaweon 7’ was developed from a cross between the African upland cultivar, ‘Moroberekan’ and ‘Ilpumbyeo’ based on marker-aided backcross selection. The recurrent parent, Ilpumbyeo is a high grain quality cultivar with medium to late maturity. Hwaweon 7 is nearly isogenic to Ilpumbyeo except a small Moroberekan introgressed segment on chromosome 6 harboring genes related with spikelets per panicle and internode diameter. The preliminary and replicated yield trial was conducted at Chungnam National University and Chungcheongnamdo Agricultural Research & Extension (CARES), Yesan in 2010 and 2011. The local adaptability test was carried out by the National Seed Management Office (NSMO) in 2012 and 2013. This cultivar was registered to NSMO with a cultivar designated as “Hwaweon7”. This cultivar averaged 80cm in culm length and has a medium growth duration. Milled rice of “Hwaweon7” is translucent and the grain quality traits are comparable to those of the recurrent parent. The average yield potential of Hwaweon 7 in grain was about 6.48 MT/ha at the ordinary fertilizer level for two years about 5.1% higher than that of Ilpumbyeo due to increase in spikelets per panicle. This variety is tolerant to lodging and the tolerance is due to the APO1 gene controlling the base internode diameter on chromosome 6 introgressed from the donor parent, Moroberekan. The Apo1 gene would be useful in enhancing resistance to lodging in rice breeding program.

Soybean cultivar ‘Seonpung’ was developed for soy-paste and tofu. Suwon 224 and YS1325-3S-2 were crossed in 2003 and selected from F3 to F5 by pedigree method. The preliminary yield trial (PYT) and advanced yield trial (AYT) were conducted from 2009 to 2010, and regional yield trial (RYT) in twelve regions was conducted from 2011 to 2013. In RYT, ‘Seonpung’ was stable in variable environments and a high yield cultivar. ‘Seonpung’ is determinate, white flower, yellow spherical seed and yellow hilum. Flowering date and maturity date were Aug. 5 and Oct. 19, respectively. Plant height was similar to ‘Daewonkong (standard cultivar)’. However ‘Seonpung’ has higher node number (16) and seed weight (25.9g/100-seed weight) than ‘Daewonkong’ (14 and 24.2g/100-seed weight). ‘Seonpung’ is resistant to root rot, and it also has high level of resistance to bacterial pustule and soybean mosaic virus. The yield of tofu of ‘Seonpung’ was 241%, and noticeably lighter, and solidity was higher than ‘Daewonkong’. Soybean malt scent, fermented soybean yield and γ-polyglutamic acid (γ-PGA) of ‘Seonpung’ were 4, 181% and 31.7㎎/g. The yield in adaptable regions was 340kg/10a (21% increase compared to ‘Daewonkong’). ‘Seonpung’ is expected to be cultivated and used widely for soy-paste and tofu. (Registration number: 5931)

‘Jungmo2501’ (Avena sativa L.), a winter oat for forage use, was developed by the breeding team at the National Institute of Crop Science, RDA in 2010. The following is the characteristics of ‘Jungmo2501’ that is characterized as light green leaf, yellow brown culm and whitish yellow grain. The heading date of ‘Jungmo2501’ was about 3 days earlier than that of check cultivar ‘Samhan’(May 7 and May 10, respectively). Its plant height was 11 cm longer than 103 cm of the check, and the leaf blade ratio of aerial parts was 26 % higher than the check (11.8% and 9.4%, respectively). The cold tolerance, resistance to lodging and wet injury of ‘Jungmo2501’ were similar to those of the check. The average forage dry matter yield of ‘Jungmo2501’ harvested at milk-ripe stage was 5% higher than the check (15.5 ton ha -1 and 14.7 ton ha -1 , respectively). ‘Jungmo2501’ was higher than the check in terms of protein content (6.6% and 5.9%, respectively), neutral detergent fiber (58.5% and 57.6%, respectively), and acid detergent fiber (34.5% and 32.1%, respectively), while total digestible nutrients was lower than the check (61.6% and 63.6%, respectively), and TDN yield was 0.37 ton ha -1 more than that of the check (9.71 ton ha -1 and 9.34 ton ha -1 , respectively). The silage grade of ‘Jungmo2501’ estimated by Flig score showed level Ⅱ, meaning good quality. Fall sowing cropping of ‘Jun