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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Weed & Turfgrass Science
Journal Basic Information
Journal DOI :
The Korean Society of Weed Science
Editor in Chief :
Volume & Issues
Volume 3, Issue 4 - Dec 2014
Volume 3, Issue 3 - Sep 2014
Volume 3, Issue 2 - Jun 2014
Volume 3, Issue 1 - Mar 2014
Selecting the target year
Classification According to Site of Action of Paddy Herbicides Registered in Korea
Park, Jae-Eup ; Kim, Sang-Su ; Kim, Young-Lim ; Kim, Min-Ju ; Ha, Heun-Young ; Lee, In-Yong ; Moon, Byung-Chul ; Ihm, Yang-Bin ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 165~173
DOI : 10.5660/WTS.2014.3.3.165
This review study was conducted to recommend the effective use of herbicide mixtures in Korea. The herbicide ingredients by Herbicide Resistancce Action Committee (HRAC) was classified into 23 groupes according to the mode of action (acetyl CoA carboxylase inhibitors, acetolactate synthase, photosystem I and II inhibitors, protoporphyrinogen oxidase inhibitors, carotenoid biosynthesis inhibitors, enolpyruvyl shikimate-3-phosphate synthase inhibitors, glutamine synthetase inhibitors, dihydropteroate synthetase inhibitors, mitosis inhibitors, cellulose inhibitors, oxidative phosphorylation uncouplers, fatty acid and lipid biosynthesis inhibitors, synthetic auxins, auxin transport inhibitors and potential nucleic acid inhibitors or non-descript mode of action). The rice herbicide mixtures registered in Korea were classified based on the guideline of HRAC. Accordingly, such a classification system for resistance management can help to avoid continuous use of the herbicide having the same mode of action in the same field.
Weed Population Dynamics under Climatic Change
Bir, Md. Shahidul Haque ; Eom, Min Yong ; Uddin, Md. Romij ; Park, Tae Seon ; Kang, Hang Won ; Kim, Do Soon ; Park, Kee Woong ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 174~182
DOI : 10.5660/WTS.2014.3.3.174
This paper provides some of the scientific background on how projected environmental conditions could affect weeds and weed management in crops. Elevated
levels may have positive effects on crop competitiveness with
weeds, but these are generally outnumbered by
species in weed populations. Moreover, higher temperatures and drought will favor
plants. The implementation of climate change adaptation technologies, such as drought-tolerant germplasm and water-saving irrigation regimes, will have consequences for crop-weed competition. Rainfed production systems are thought to be most vulnerable to the direct effects of climate change and are likely to face increased competition from
and parasitic weeds. Biotic stress-tolerant crop cultivars to be developed for these systems should encompass weed competitiveness and parasitic-weed resistance. In irrigated systems, indirect effects will be more important and weed management strategies should be diversified to lessen dependency on herbicides and mechanical control, and be targeted to perennial rhizomatous (
) weeds. Water-saving production methods that replace a weed-suppressive floodwater layer by intermittent or continuous periods of aerobic conditions necessitate additional weed management strategies to address the inherent increases in weed competition. Thus, climatic conditions have a great effect on weed population dynamics all over the world.
Taxonomic Review of the Genus Echinochloa in Korea (I): Inferred from Sequences of cpDNA and nrDNA
Lee, Jeongran ; Kim, Chang-Seok ; Lee, In-Yong ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 183~189
DOI : 10.5660/WTS.2014.3.3.183
The genus Echinochloa (L.) P. Beauv. comprised of approximately 30-40 species in the tropical and warm temperate regions of the world, including numerous interspecific and intraspecific types which make the genus difficult to identify. As an attempt to identify the species within the genus easier, the taxonomy of the genus Echinochloa, Poaceae in Korea was reviewed on the basis of sequencing data derived from nuclear ribosomal DNA internal transcribed spacer (ITS) and external transcribe spacer and chloroplast DNA trnL intron, trnL-F intergenic spacer and matK regions using a total of 46 accessions representing all the species in Korea. The results of maximum parsimony found separate lineage comprised of E. colona and E. frumentaceae which are not Korean species, but no resolution within Korean Echinochloa species, supporting the suggestion of Yamaguchi group that E. crus-galli, E. oryzoides, and E. esculenta should be considered to belong to the same species. However, the relationship between these three species and the other species, i.e. E. oryzicola should be better understood with more detail studies.
Taxonomic Review of the Genus Echinochloa in Korea (II): Inferred from Simple Sequence Repeats
Lee, Jeongran ; Kim, Chang-Seok ; Lee, In-Yong ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 190~195
DOI : 10.5660/WTS.2014.3.3.190
Echinochloa (L.) P. Beauv. includes some of the noxious weeds, causing a serious yield loss when they are dominant in the fields. Identification of the Echinochloa is very difficult because many interspecific and intraspecific forms of the species are found. However, it is important to identify the species exactly and to know the genetic diversity of the species for effective weed management. This study was conducted to identify and summarize the Echinochloa species by comparing the genetic variation and relationship among Korean Echinochloa species using SSR. The genetic diversity of 107 individuals, including seven species were assessed using five SSR markers. UPGMA dendrogram generated two clades (I and II) and clade II divided again into two subclades (II-1 and II-2) whereas the model based genetic structure proposed four subpopulations. The two subpopulations were corresponded to clades I and II-1 and the other two were arranged to clade II-2 of the UPGMA dendrogram. We have concluded that E. colona and E. glabrescens might have not distributed in Korea. The biological varieties, praticola and echinata, of E. crus-galli should be treated as E. crus-galli. Korean Echinochloa should be summarized with four species, i.e., E. oryzicola, E. crus-galli, E. esculenta, and E. oryzoides.
Morphological Characteristics of Weed Seed Fibers
Yoon, A Ra ; Lee, Min Woo ; Kim, Seul Ki ; Kim, Jin-Seog ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 196~205
DOI : 10.5660/WTS.2014.3.3.196
In this study, to obtain basic data for searching potential resources as new natural fibers, we investigated morphological and classificatory characteristics of 21 weed seed fibers. According to classification keys in this study, the collected weed seed fibers could be classified into total 13 types, showing their diversity. Seven species among them belonged to BOT3 type. Two species belonged to B2N0 and DOS3 type, respectively. Many of weed seed fibers had not branched. However, three species had various branched fibers at one main fibers on the seed. Three species had various branched fibers at several main fibers on the seed. Eight species had a smooth fiber surface but 13 species had a weakly or significantly developed-corniculum on the fiber surface. In the fiber cell shape, fiber cells of eight weed species were composed of one long cell without septum. But others had a fiber cell shape composed of a bunch of several long cells. Based on the easiness of harvesting, productivity of fibers, and morphological characteristics of seed fiber, it seemed that five seed fibers (TYPLA, METJA, HEMLY, IMPCK, and EREHI) should be additionally investigated if they are practically applicable as renewable resources for new natural fibers.
Current Status of Naturalization by Exotic Ornamental Plants in Korea
Kil, Jihyon ; Kim, Chang-Gi ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 206~214
DOI : 10.5660/WTS.2014.3.3.206
Numerous cases have been reported of naturalization by exotic ornamental plants. To obtain basic data about how those plants affect the ecosystems of Korea, we compiled a list of 78 species categorized as ornamentals from 309 naturalized species in Korea and analyzed their life forms, origin, and their current global status of naturalization and regulation. Plants belonging to Compositae comprised the largest group, with 23 species. In all, 75 species were considered herbaceous, and perennial species out-numbered annuals and biennials. Most species originated from Europe and North America. Except for Houttuynia cordata, the other 77 species were naturalized in other countries as well. Furthermore, 34 species, including Aster pilosus and Solidago altissima, have been subject to legal restrictions or classified as alert species in Korea or other countries. Therefore, monitoring may be required to prevent spread of those species, especially for species which have not been managed under domestic law up to now.
Possibility of Organic Weed Control by False- and Stale-Seedbed in Upland Crop
Cho, Jung-Lai ; Ok, Jung-Hun ; Lee, Byung-Mo ; An, Nan-Hee ; Han, Eun-Jung ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 215~220
DOI : 10.5660/WTS.2014.3.3.215
This study was conducted to evaluate potential weed control in organic farming field using false seedbed and stale seedbed techniques. The experiment was conducted in open upland fields during spring and fall crop seasons. The false seedbed was prepared before 2-4 weeks of crop culture and was treated with shallow tillage or flame weeding before transplanting. The weed suppression rates of false seedbed treatment in the spring crop experiments for Chinese cabbage, soybean, hot pepper and corn were 65-73%, 50-55%, 9-55% and 8-33%, respectively. According to crop growth and yield in this experiment, the false seedbed technique has some potential weed control for Chinese cabbage, soybean and corn. The weed suppression rates of stale seedbed treatments in the fall crop experiments for Chinese cabbage, spinach and carrot were 18-39%, 40-77% and 37-38%, respectively. Weed control efficacy of the stale seedbed in this study was lower, when compared with false seedbed.
Appearance/Instance of Genetically Modified Maize at Grain Receiving Harbors and Along Transportation Routes in Korea
Han, Sung Min ; Kim, Do Young ; Uddin, Md. Romij ; Hwang, Ki Seon ; Lee, Bumkyu ; Kim, Chang-Gi ; Park, Kee Woong ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 221~224
DOI : 10.5660/WTS.2014.3.3.221
Genetically modified (GM) crops are not permitted to be cultivated in Korea, but can only be imported as food or feed purposes. The import of GM crops has sharply increased in recent years, thus raising concerns with regard to the unintentional escape of these crops during transport and manufacturing as well as the subsequent contamination of local, non-GM plants. Hence, monitoring of GM crops was studied in or outside of grain receiving ports as well as from feed-processing plants in Korea during July 2008. We observed spilled maize grains and established plants primarily in storage facilities that are exposed around the harbors and near transportation routes of the feed-processing areas. Based on the PCR analyses, a total of 17 GM maize plants and 11 seeds were found among the samples. In most cases, the established maize plants found in this study were at the vegetative stage and thus failed to reach the reproductive stage. This study concludes that, in order to prevent a genetic admixture in the local environment for GM crops or seeds, frequent monitoring work and proper action should be taken.
Phytotoxicity of Whole Crop Forage Rice to Benzobicyclon
Yang, Woonho ; Shon, Jiyoung ; Kim, Junhwan ; Jung, Hanyong ; Ahn, Eok-Keun ; Kim, Bo-Kyeong ; Park, Tae-Seon ; Yoon, Young-Hwan ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 225~231
DOI : 10.5660/WTS.2014.3.3.225
Benzobicyclon induces phytotoxicity to Tongil type rice, although it is an efficient herbicide in paddy. This study was performed to figure out the benzobicyclon-induced phytotoxicity responses of whole crop forage rice genotypes that have the genetic background similar to Tongil type rice, under wet-seeded and transplanted conditions. Mogwoo demonstrated whitening symptom at all the temperatures in both wet-seeding and transplanting by the application of standard and double rates of benzobicyclon. Nokyang, Mogyang and Suweon560 exhibited no or negligible whitening and their plant heights were not reduced at standard rate of benzobicyclon. But in double rate application in wet-seeding, the three genotypes showed 0-8% of white plants at all temperature treatments and reduction in plant height was comparatively larger at
. In transplanting, the double rate application of benzobicyclon at 24 and
induced 0-32% of whitening plants depending on genotypes while no whitening plants were observed at 18 and
in all genotypes. Reduction in biomass by double rate of benzobicyclon at 24 and
was greater than at 18 and
. It is concluded that Mogwoo is extremely sensitive to benzobicyclon and Nokyang, Mogyang and Suweon560 are tolerant to the standard rate of benzobicyclon.
Comparison of Germination Characteristics and Various Pre-treatment Methods for Enhancing Germination on Zoysiagrass
Han, Jeong-Ji ; Lee, Kwang-Soo ; Park, Yong-Bae ; Yang, Geun-Mo ; Bae, Eun-Ji ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 232~239
DOI : 10.5660/WTS.2014.3.3.232
Zoysiagrass seeds had low germination or lack of germination uniformity under natural condition. To improve the final germination percentage of zoysiagrass seeds, we investigated the methods of proper pre-treatment to enhance germination rate of zoysiagrass. Seeds were subjected to the testa scarification and four types of seed priming methods, namely, hydro priming (distilled water), osmotic priming (polyethylene glycol -0.5 MPa, -1.0MPa, -2.0 MPa), halo priming (Potassium nitrate 100 mM, 200 mM, 400 mM), and solid matrix priming (seed : microcel-E : distilled water = 4:1:8) with and without 25% KOH treatment in the testa. The scarification improved the germination rate and reduced the germination time. Osmotic priming (PEG -0.5 MPa) with scarification were significantly increased the seed germination rate and decreased MGT, and
. Seed germination rate obtained by osmotic priming (PEG -0.5MPa) with scarification increased above 60% in comparison with natural condition. Conclusively, scarified and primed zoysiagrass seed germinated more rapidly and uniformly in the study. The present results suggested that PEG priming treatment with KOH treatment prior to sowing could improve germination percentage, and this method makes us establish the early zoysiagrasses in the field.
Growth of Zoysiagrass and Seashore Paspalum on Volcano Eruption Sand and Clayey Soil with Organic and Inorganic Fertilizers in Indonesia
Rahayu, Rahayu ; Zuamah, Hidayatuz ; Yang, Geun-Mo ; Choi, Joon-Soo ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 240~245
DOI : 10.5660/WTS.2014.3.3.240
This study was carried out to determine the possible use of volcano eruption sand at Merapi mountain area compared with clayey soil, alfisol as turfgrass growing media. Indonesia has abundant source of eruption sand and clayey soil. Native zoysiagrass (Z. matrella) was collected from Sleman district and seashore paspalum (P. vaginatum) from Solo region. The experimental plots were treated with both organic and inorganic fertilizers. Zoysiagrass and seashore paspalum can grow on the mixture of eruption volcano sand and alfisol soil. Fertilizers application increased turf color, surface coverage rate and recovery rate of turfgrass. While fertilizer treated alfisol have no effect on the length and dry weight of zoysiagrass root. Mixing of volcano eruption sand on growing media resulted in longer root length, higher shoot dry weight of zoysiagrass than in alfisol soil. Type of fertilizer affected the pH, soil organic matter, total N, available P, available K and electrical conductivity of sand and alfisol after cultivation. Similarly to zoysiagrass, the recovery of seashore paspalum was increased by application of fertilizer, even the inorganic fertilizer showed faster recovery than organic fertilizer. Surface coverage of seashore paspalum was faster than that of zoysiagrass with or without fertilizer.
Effects of Two Amino Acid Fertilizers on Growth of Creeping Bentgrass and Nitrogen Uptake
Kim, Young-Sun ; Ham, Suon-Kyu ; Lee, Jae-Pil ; Hwang, Young-Soo ; Lee, Kyu-Seong ;
Weed & Turfgrass Science, volume 3, issue 3, 2014, Pages 246~252
DOI : 10.5660/WTS.2014.3.3.246
This study was conducted to evaluate the effects of two amino acid fertilizers on the growth of creeping bentgrass and N uptake. Fertilizer treatments were designed as follows; non-fertilizer (NF), control (CF), recommended amount (ALF), double amount (2ALF) of amino acid liquid fertilizer (AaLF), recommended amount (ASLF) and double amount (2ASLF) of amino acid liquid fertilizer contained with saponin (AaSLF). Turf quality of treatments of AaLF and AaSLF such as turf color index, chlorophyll index and root length was similar to the treatment of CF. Dry weight and content, uptake and availability of N were investigated highest in the 2ALF and 2ASLF. These results suggested that foliar application of AaLF and AaSLF was enhanced turf quality and growth of creeping bentgrass by stimulating uptake and availability of N.