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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Weed & Turfgrass Science
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Journal DOI :
The Korean Society of Weed Science
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Volume & Issues
Volume 5, Issue 2 - Jun 2016
Volume 5, Issue 1 - Mar 2016
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Dominance and Distribution of Weed Occurrence on Orchards of Apple, Grape, Peach, Pear, and Plum of Gyeongbuk Province
Kim, Sang-Kuk ; Shin, Jong-Hee ; Kim, Se-Jong ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 51~59
DOI : 10.5660/WTS.2016.5.2.51
The study was conducted to get a information on the dominance and distribution of weeds occurred in major orchards including apple, grape, peach, pear, and plum at 631 sites of Gyeongsangbuk-do during winter and summer season. The weeds classified by family and life cycle occurred in the five orchards were summarized as 36 family and 105 species in apple orchard, 34 family and 126 species in grape orchard, 34 family 126 species in peach orchard, 33 family 98 species in pear orchards, and 36 family 111 species in plum orchard. In addition to life cycle of weeds, most orchards except for pear orchard were dominant to biennial weeds. The most dominant importance value was observed in pear orchards as 6.57%. In winter's season, the weeds were summarized as 31 family and 89 species in apple orchard, 28 family and 71 species in grape orchard, 32 family 111 species in peach orchard, 27 family 68 species in pear orchards, and 33 family 83 species in plum orchard. In summer's season, the weeds were distributed as 31 family and 101 species in apple orchard, 27 family and 69 species in grape orchard, 29 family 91 species in peach orchard, 31 family 94 species in pear orchard, and 31 family 97 species in plum orchard. In winter season, the most dominant weeds in apple, grape, peach, pear, and plum orchard were Capsella bursa-pastoris, Laria media, Capsella bursa-pastoris, Capsella bursa-pastoris, and Erigeron canadensis, in turn. In summer season, the most dominant weeds in apple, grape, peach, pear, and plum orchard were Acalypha australis, Acalypha australis, Setaria viridis, Setaria viridis, and Setaria viridis, respectively.
Occurrence of Weed Flora in Lycium chinense Upland Field of Minor Crop in Korea
Lee, In-Yong ; Kim, Chang-Seok ; Lee, Jeongran ; Seo, Hyun-A ; Kwon, Bong-Jae ; Jang, Hyung-Mok ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 60~64
DOI : 10.5660/WTS.2016.5.2.60
Investigation on weed flora in Lycium chinense upland fields was conducted to understand the current status of weed flora and establish the control measures. Investigation was conducted twice, May and June on 2015. From this investigation, 91 species of 30 families including 27 exotics were identified into 36 species of annuals, 28 species of biennials and 27 species of perennials. Dominance was the highest with Portulaca loeracea followed by Digitaria ciliaris, Stellaria media, Oxalis corniculata, Acalypha australis, Chenopodium album, Cyperus iria etc. in order. Chenopodium album was the highest in importance analysis and the followings were in order of Conyza canadensis, Conyza bonariensis, Senecio vulgaris, Amaranthus lividus, Sonchus asper etc.
Occurrence of Weed Flora and Their Yield Loss in Angelica gigas Upland Fields of Minor Crop in Korea
Lee, In-Yong ; Kim, Chang-Seok ; Lee, Jeongran ; Seo, Young Jin ; Kim, Jong-Su ; Seo, Hyun-A ; Jang, Hyung-Mok ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 65~70
DOI : 10.5660/WTS.2016.5.2.65
Investigation on weed flora in Angelica gigas upland fields was conducted to understand the current status of the weed flora and establish the control measures. Investigation was conducted twice, July and October in 2015. From this investigation, 105 species of 37 families including 27 exotics were identified and classified into 53 species of annuals, 24 species of biennials and 28 species of perennials. Dominance was the highest with Digitaria ciliaris, followed by Portulaca loeracea, Chenopodium album, Cyperus iria, Conyza canadensis, Galinsoga ciliata etc. in order. Chenopodium album was the highest in importance analysis and the followings were in order of Conyza canadensis, Galinsoga ciliata, Amaranthus lividus, Taraxacum offcinale etc. The yield of A. gigas was reduced 49.6% in no weeding plots comparing in weed managed plots.
Occurrence and Distribution of Weeds on Orchard Fields in Chungbuk Province of Korea
Lee, Chae Young ; Park, Jae Seong ; Lee, Hee Du ; Kim, Eun Jeong ; Hong, Eui Yon ; Hong, Seong Taek ; Woo, Sun Hee ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 71~81
DOI : 10.5660/WTS.2016.5.2.71
This study was conducted to investigate the weed occurrence and distribution on the orchard fields (apple, pear, peach, grape) at 387 sites in Chungbuk province of Korea from May to September in 2015. From the result of this survey, 200 weed species in 47 families were identified and classified to 82 annuals, 40 biennials and 78 perennials. Based on the occurrence ratio, the most dominant weed species in Chungbuk province orchard fields were higher in order of Digitaria ciliaris (4.12%), Echinochloa crus-galli (3.60%), Stellaria aquatica (3.45%), Artemisia princeps (3.07%) and Chenopodium album (3.06%). The composition of major occurred weed families, Compositae, Poaceae, Leguminosae and Cyperaceae were 21, 9, 6 and 6%, respectively. Coefficient of similarity between a various orchards based on the degree of dominance were ranged from 68.7-91.8%. The most important weed species at apple, peach, grape was Digitaria ciliaris while these for pear was Poa annua. Fifty-one exotic weed species were also identified. The results of this study could be useful information for estimation of future weed occurrence, weed population dynamics and establishment of weed control methods on the orchard fields in Chungbuk province of Korea.
Weeding Efficacy and Phytotoxicity Evaluation of Soil-Applied Herbicides for Potential Use in Sorghum
Hwang, Jae-Bok ; Park, Tae-Seon ; Park, Hong-Kyu ; Kim, Hak-Sin ; Choi, In-Bae ; Koo, Bon-Il ; Bae, Hee-Soo ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 82~87
DOI : 10.5660/WTS.2016.5.2.82
Herbicide options for weed control in sorghum is very limited, hence there is a need for exploring potential herbicides. Sorghum herbicide tolerance field trails were conducted at two locations, Yaechoun, Gyeongsangbuk-do, and Miryang, Gyeongsangnam-do, in 2013. Tolerance of sorghum was evaluated following the pre-emergence application of methabenzthiazuron 70% (WP), simazine 50% (WP), oxadiargyl 1.7% (EC), and dimethenamid-P 5% + pendimethalin 20% (EC) at the standard rate 157.5 g, 75 g, 5.1 g, and 75 g a.i.
, respectively. As well as double the standard rate. On a phytotoxicity scale of 0 to 9, methabenzthiazuron (WP) induced injury to sorghum up to level 1 at the standard rate and to 3 at double the rate, but did not significantly affect the yield any statistical difference from the untreated. Simazine (WP) induced phytotoxicity up to levels 2 and 4 at single and double rates, respectively. Simazine (WP) did not significantly affect yield: however, the values were numerically lower than those in the methabenzthiazuron (WP) treatment. Oxidiargyl (EC) and dimethenamid + pendimethalin (EC) induced no or slight phytotoxicity; however they failed to provide effective weed control at the standard rate (32 and 68% control, respectively). Out of the tested, methabenzthiazuron (WP) was found to have potential for use in sorghum whereas the other herbicides caused unacceptable levels of injury.
Performance of Zoysia spp. and Axonopus compressus Turf on Turf-Paver Complex under Simulated Traffic
Chin, Siew-Wai ; Ow, Lai-Fern ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 88~94
DOI : 10.5660/WTS.2016.5.2.88
Vehicular traffic on turf results in loss of green cover due to direct tearing of shoots and indirect long-term soil compaction. Protection of turfgrass crowns from wear could increase the ability of turf to recover from heavy traffic. Plastic turfpavers have been installed in trafficked areas to reduce soil compaction and to protect turfgrass crowns from wear. The objectives of this study were to evaluate traffic performance of turfgrasses (Zoysia matrella and Axonopus compressus) and soil mixture (high, medium and low sand mix) combinations on turf-paver complex. The traffic performance of turf and recovery was evaluated based on percent green cover determined by digital image analysis and spectral reflectance responses by NDVI-meter. Bulk density cores indicated significant increase in soil compaction from medium and low sand mixtures compared to high sand mixture. Higher reduction of percent green cover was observed from A. compressus (30-40%) than Z. matrella (10-20%) across soil mixtures. Both turf species displayed higher wear tolerance when established on higher sand (>50% sand) than low sand mixture. Positive turf recovery was also supported by complementary spectral responses. Establishment of Zoysia matrella turf on turfpaver complex using high sand mixture will result in improved wear tolerance.
Seed Yields and Germination Rates of Native Ecotype Collections for the Development of High-Yield Seeded Variety of Zoysiagrass in Korea
Bae, Eun-Ji ; Han, Jeong-Ji ; Choi, Su-Min ; Lee, Kwang-Soo ; Park, Yong-Bae ; Yang, Geun-Mo ; Choi, Joon-Soo ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 95~100
DOI : 10.5660/WTS.2016.5.2.95
Seeded variety of zoysiagrass has not been bred yet in Korea. Development of seeded zoysiagrass cultivar will be very important for the growth of turfgrass industry internationally as well as domestically. This research was conducted to investigate seed yield and germinability of 102 collected native zoysiagrass ecotypes in South Korea. Two hundred and seventy seven ecotypes were collected from various locations including coastal and mountain areas, while 102 morphologically distinct and seed producing ecotypes were selected and planted in
maintenance plots. Seed yield ranged from 0.1 to
. Highest yielding line was a medium leaf type zoysiagrass of Z6011 with
. Most collected lines showed seed germination rates of below 50%. However, Z2095 showed highest germination rate of 78%. Considering germination rate and seed yield, collected lines of Z6011, Z 6015, Z1075, ZN1008, and Z1084, which were mostly medium leaf type and Z. japonica types, showed reasonably high potential to be used as breeding lines for high yield seed varieties of zoysiagrass.
First Report of Curvularia Leaf Blight Caused by Curvularia trifolii on Creeping Bentgrass in Korea
Sung, Chang-Hyun ; Koo, Jun-Hak ; Kim, Jung-Ho ; Yoon, Jung-Ho ; Lee, Jung-Han ; Shim, Kyu-Yul ; Kwak, Youn-Sig ; Chang, Seog-Won ;
Weed & Turfgrass Science, volume 5, issue 2, 2016, Pages 101~104
DOI : 10.5660/WTS.2016.5.2.101
Curvularia leaf blight of creeping bentgrass (Agrostis stolonifera) putting green by caused Curvularia trifolii was observed in Hapcheon, Korea. In July to September 2014, curvularia leaf blight developed on leaf blades of creeping bentgrass as small water-soaked lesions that subsequently turned into dark-colored, necrotic spots. The spots were expanded and became gray, grayish-brown, or light brown, circular to oblong lesions with purple to dark brown borders that often were surrounded by a yellow halo. The necrotic lesions coalesced, became irregular in shape and caused tip or complete blighting of the leaves. Blighted leaf blades appeared grayish-white to tan. The fungus was identified by morphological characters and 16S rDNA sequencing as C. trifolii. Conidia of the pathogen were short, with predominantly 3-septa, straight or often curved, with end cells frequently paler than intermediate cells. Size of the 3-septate conidia in culture are
. Pathogenicity of the fungus was proved by artificial inoculation on the host. This is the first report of C. trifolii causing leaf blight on creeping bentgrass in Korea.