• Korean Journal of Breeding Science
• /
• v.49 no.3
• /
• pp.224-229
• /
• 2017

A new peanut variety 'Daan'(Arachis hypogaea ssp. hypogaea L.) was developed at the Department of Southern Area Crop Science, National Institute of Crop Science (NICS) in Milyang 2014. This was developed from the cross between 'Iksan 31' with Virginia typed short stem and 'Dakwang' with Shinpung-typed larger grain. 'Daan' which is a Shinpung plant type had 13 branches per plant and its length of main stem was 44cm. Each pod has two grains with brown testa and long ellipse-shaped large kernel. Its yield components showed 34 pods per plant, 127 g of 100-seed-weight and 75% of pod shelling ratio in the regional yield trials (RYT). Seed quality showed 47.8% of crude oil and 28.3% of protein content. This variety showed resistant to early leaf spot and had more resistant to late leaf spot, stem rot and lodging, compared to reference variety. In the regional yield trials for 3 years 'Daan' was more productive than reference variety by 16% with 5.00 MT/ha for grain production.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.28 no.4
• /
• pp.307-314
• /
• 2008

No comprehensive tillage system of corn (Zea mays L.) has been conducted in Korea. Therefore, this experiment was carried to determine soil characteristics, weed and forage production in tillage system of corn. Plot was allotted to one of four treatments in a randomized block design using tillage system. The four treatments were (T1) conventional tillage, plow and rotary till, (T2) rotary till, (T3) disk till, and (T4) no-till system. In soil characteristics before planting and after harvest of corn, pH and organic matter at planting date was higher than at harvest date, however, there were no difference among tillage system. Days from planting to silking of no-till was the longest among tillage system. Lodging resistance of disk and no-till were higher than conventional and rotary till due to its thicken stem diameter. Main weed in corn field are barnyard grass (Echinochloa crusgall), velvetleaf(Abutilon avicennae), crabgrass (Digitatia saguinalis), and redroot pigweed (Amaranthus retroflexus). Weed population was lower in no-till than others tillage system. Dry matter (DM) content and ear percentage of conventional and rotary till were higher than others in corn field. However, DM and total digestible nutrients (TDN) yields of disk and no-till were higher than those of conventional and rotary till. Therefore, disk and no-till are more suitable in corn silage system because of high lodging resistance and forage yield, and low weed population.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.57 no.3
• /
• pp.310-315
• /
• 2012

The vegetable perilla is proved to be a late-maturing plant that flowers at the early of Oct. regardless of sowing time, so that the sowing time for seed production should be decided under consideration of maturity before beginning of frost. This experiment was carried out to determine the sowing date for seed production at greenhouse on late-maturing perilla cultivar, 'Ipdlkkae 1' in the middle region of Korea. The sowing dates were 8 times from May 6 to July 15 with an intervals of 10 days. As sowing date was delayed, the stem height, no. of nodes, no. of branches, no. of cluster per plant and no. of capsules per cluster were decreased. But as sowing was early, the lodging was occurred because of heavier growing. Days to flowering was linearly decreased about 0.86 day as affected by a day's delayed. But days from flowering to maturing was not significantly affected by sowing date. The grain yield was not significantly different among sowing from May 6 to June 15 and rapidly decreased the sowing after June 25 because of the reductions of no. of cluster and percent of ripened grain. Considering accumulative temperature, lodging, germination rate and grain yield, it is suggested that the sowing for seed production in late-maturing perilla cultivar should be finish before June 15 (transplanted at July 15) at greenhouse in the middle region of Korea.

• Korean Journal of Agricultural Science
• /
• v.24 no.2
• /
• pp.126-131
• /
• 1997

This experiment was conducted to obtain the basic information on ability of germination at low temperature with 26 cultivars of Korea including USA cultivars and to identify the optimal sowing depth in dry-direct seeded rice. Varietal difference in germination rate and days to emergence at low temperature($13^{\circ}C$) was observed. Average germination was 81.2% and range of germination rate showed 64.3 to 94.8%. In days to germination there was varietal difference. Average days to germination was 17.4 days and those range showed 14 to 24days. Negative high correlation was observed between the ability of germination and days to germination. Considering germination and days to germination. Jakwangdo, Nagdongbyeo, Cheongmeongbyeo, Calom, Anjungbyeo, Gyehwabyeo, Daegwanbyeo, Dongjinbyeo and Seohaebyeo were selected as a adaptable cultivar. High correlation was observed among the lodging index and sowing depth, stem diameter, height of central gravity, breaking strength. Seedling emergence was increased and days to emergence was shortened at the seeding depth of 1 and 3cm. Lodging index was decreased as seeding depth was deep and so the reasonable seeding depth would be around 3cm in direct seeded rice.

• Korean Journal of Breeding Science
• /
• v.43 no.6
• /
• pp.587-590
• /
• 2011

A new sesame variety 'Yunheuk' was developed from Yeongnam Agricultural Research Institute in 2007. A cross was made by 'Yoosung' with weak disease resistance and 'Kunheuk' with high yield capacity & quality, followed by pedigree selection, yield test and regional yield trial (RYT) by the sesame breeding team at the National Institute of Crop Science and Yeongnam Agricultural Research Institute up to 2007. The variety showed higher lodging resistance and more dark seed coloring rather than that of check variety 'Yangheuk'. Average stem length and the number of capsules per plant is 118 cm, 79 cm respectively. Its 1,000 grains weight is about 2.67 g indicating 0.10 g lower than that of 'Yangheuk', and its oil content is about 46.4%. 'Yunheuk' also contains total 2.59 mg/g of such lignans as sesamin and sesamolin. And its dark color density ($L^*$ Value) of seed coat is 22.43 which was about 10% lower than that of check variety. The average yield of 'Yunheuk' was 99.9 kg per 10a at the national-wide regional performance.

• Horticultural Science & Technology
• /
• v.16 no.3
• /
• pp.350-351
• /
• 1998

This study was conducted to investigate the effect of reflective film(RF) mulching on the growth and flowering of snapdragon 'Fujinoyuki' in greenhouse cultivation. On the spectroradiometry of mulching materials in the wavelength zone of 300nm to 1100nm, 85% of total light source was reflected from RF, while over 95% was absorbed into black polyethylene film(BL). Under plant canopy, light, air temperature, and leaf temperature were higher on the RF mulching than BL, but soil temperature and soil heat flux were higher under the BL. Primary plant growth such as dry weight, stem hardness, lodging, and transpiration was superior when using RF mulching. RF mulching accelerated the plants to bloom about 12 days earlier with admirable cut flower quality.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.14
• /
• pp.91-96
• /
• 1973

This study was conducted to determine optimum canopy type for dense planting with three soybean varieties possessing different types of canopy. The experimental plots were arranged in split-split plot design. Branches and pods per plant were both reduced by close planting, particularly keen responses were observed in the variety Clark. Number of nodes per plant seems a characteristics of each variety and was independent character from the plant height. Clark, tall variety, was most resistant to lodging and it may be due to the elasticity of the stem. Seed yields of Jangdan-Baikmok, branching type, tended to be lower at the dense spacing, whereas, branchless type variety Clark was higher in seed yield at the dense planting. These results indicate that the plant type possessing more nodes and less branching per plant with be suitable for dense planting.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.21 no.1
• /
• pp.9-14
• /
• 1976

This experiment was conducted to find out the ., effects of various fertilizer level and Drill-seeding on the growth and yield of the two newly bred naked-barley varieties, Kwangsung and $Bangsa^6$ the former that was bred for the first time in Korea in 1972, is resistant to winter and productive, and the latter that was also bred in Korea by radioisotope treatment in 1974, is of short-stem, early maturing and productive. The grain yield in Drill-seeding was 8 percent higher than that in Conventional seeding. $Bangsa^6$ was more resistant to lodging and more adaptable to the amounts of the increased-fertilizer level than Kwangsung. In Drill-seeding, $Bangsa^6$ is thought to be more suitable naked-barley variety than Kwangsung.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.40 no.2
• /
• pp.228-235
• /
• 1995

This study was conducted to obtain the basic informations for developing new varieties and cultural techniques for vegetable soybean at the Crop Experiment Station, Rural Development Administration, Suwon, Korea in 1992. Two vegetable soybean varieties, 'Hwaeom-putkong' and 'Seokryangputkong', and the other 'Jangyeobkong' for soy-paste were planted at three planting dates(April 15, May 15, June 15). The characteristics of growth, yield, and quality were compared between vegetable and soy-paste soybean genotypes in response to different planting dates.Vegetable soybean varieties, 'Hwaeomputkong' and 'Seokryangputkong' were more resistant to lodging, earlier in maturity, higher in the density of pod set on stem and percentage of poded nodes, and larger in grain size than Jangyeobkong for soy-paste. Earlier planting (April 15) of vegetable soybean varieties increased the yield of green pod as well as improved quality in number of green pods per 500g and length and width of green pod.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2022.10a
• /
• pp.193-193
• /
• 2022

Cowpea(Vigna unguiculata L. Walp) has a low fat and protein content and a relatively high starch content, so it is mainly used in various ways for song-pyeon sediment, rice-cake paste, and porridge. In Yeonggwang-gun, Jeollanam-do, cowpea for seed production is being cultivated for the localization of raw material for Rice cake with ramie leave. A cowpea variety 'Jang-Alchan' was improved from the cross between IT145373 and IT145391 at the JARES in 2019. 'Jang-alchan' has an erect plant with an intermediate plant habit, light purple-colored corolla, and heart-shaped leaflets. 'Jang-alchan' has an orange-yellow seed seed-surface of faint luster, and brown and straight pods when matured. The stem length of 'Jang-alchan' was 48cm, 9cm longer than that of the control cultivar 'Okdang' and the 100-seed weight was 14.1g. The weight ratio of the seed coat for the entire seed was 11.2%, which was 0.2%p lower than that of the control cultivar. Field resistance of 'Jang-alchan' to leaf and systemic diseases was similar to that of the control cultivar. Is field resistance of 'Jang-alchan' to lodging was slightly lower than that of the control cultivar. The average yield of 'Jang-alchan' was 1.85ton per hectare, which was 14% higher than that of the control cultivar 'Okdang', 'Jang-Alchan' does not require the installation of an espalier-net and is taller than the existing supplied 'Okdang', so it can be harvested by combine harvesting. In addition, it is expected to contribute to the localization of raw material grains for regional specialties as it can be cultivated over a large area.