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참취와 곰취의 정식 후 1년차 수량 및 생육특성에 미치는 질소 시용 효과
최승출 ( Seong Chul Choi ),안문섭 ( Mun Sup Ahn ),안수용 ( Su Yeong Ahn ),옥용식 ( Yong Sik Ok ),손정수 ( Jung Su Son ),주진호 ( Jin Ho Joo ) 한국환경농학회 2009 한국환경농학회지 Vol.28 No.3
Chinese cabbage cultivation has been typically practiced in alpine sloped farmland in Gangwon province, and caused severe soil erosion by soil disturbance like tillage. Cultivation of wild edible greens such as Aster scaber Thunb. and Ligularia fischeri Turcz. could be one of alternative ways to reduce soil erosion, because their residues become stubble mulch after harvest, and there is no need for tillage every year. Therefore, the objective of this research was to estimate the effect of nitrogen application rates for the maximum production of Aster scaber Thunb. and Ligularia fischeri Turcz. in the early cultivation stages. Total N contents of Aster scaber Thunb. and Ligularia fischeri Turcz. increased with the increment of fertilizer application rates. Maximum growth of Aster scaber Thunb. and Ligularia fischeri Turcz. was observed with the highest rates of fertilizer. We obtained the relationship between Aster scaber Thunb. and N application rate, as y=-0.296x2+73.82x+5246 (R=0.998). There was no significant difference for Aster scaber Thunb production between N application rates for 120 and 160 kg/ha. Also, the relationship between Ligularia fischeri Turcz. and N application rate was y=-0.135x2+32.86x+1529 (R2=0.965) in the first year trial after transplanting.
유용미생물(Kluyvera sp. CL-2) 처리가 수박의 유리당 함량 및 토양화학성에 미치는 영향
홍수영,최승출,서영호,임수정,허수정,윤병성,박영학,홍대기,송재경 한국유기농업학회 2018 韓國有機農業學會誌 Vol.26 No.4
This study was carried out to determine the effect of Kluyvera sp. CL-2 (KACC 91283P) on the growth of watermelon (Citrullus vulgaris L.). The study consisted of three treatments, no treatment (NT), twice application of Kluyvera sp. CL-2 before transplanting (KC1), and five times application around transplanting (KC2). We determined the chemical properties of soil before and after the treatments, and compared the growth characteristics of watermelon among treatments. The treatment of Kluyvera sp. CL-2 at 1.0×106 cfu mL-1 significantly increased available P2O5. The organic matter showed to increase for all treatments, while soil pH, exchangeable Ca and Mg tended to decrease for all treatments. The leaf width was increased by 11.6% for KC1 and 26.2% for KC2 compared to NT. But there were no significant differences in yield, leaf length, fruit weight, fruit length, fruit width, and pericarp thickness among treatments. The contents of free sugars such as fructose and glucose were increased by microbial treatments but sucrose was not different from NT. The content of glucose in watermelon was increased by 13.8% in KC1 and 12.8% in KC2 compared to NT. The content of fructose increased by 14.6% in KC1 and by 39.8% in KC2 compared to NT. The results from the study imply that Kluyvera sp. CL-2 can be used to increase sugar content in watermelon.
서영호,김세원,최승출,정병찬,Seo, Young-Ho,Kim, Se-Won,Choi, Seung-Chul,Jeong, Byeong-Chan 한국잡초학회한국잔디학회 2012 Weed&Turfgrass Science Vol.32 No.1
The occurrence of sulfonylurea-resistant weeds has recently increased in Korea. A survey was performed to investigate major paddy field weeds and frequently used herbicides in Gangwon province, Korea in order to establish a system to efficiently control herbicide-resistant weeds. The dominant paddy field weeds included Monochoria vaginalis (14%), Sagittaria trifolia (14%), Scirpus juncoides (13%), and Echinochloa spp. (13%), and the most widely used herbicides were oxadiazon 12% EC (27%), butachlor 5% GR (20%), oxadiargyl 1.7% EC (16%), and benzobicyclon+imazosulfuron+pyriminobac-methyl 6.1% SC (14%) in Gangwon province, Korea. Many paddy rice growers considered Scirpus juncoides, S. trifolia, Echinochloa spp. and M. vaginalis as herbicide-resistant weeds. An extensive research deserves to be conducted to monitor occurrence of herbicide-resistant paddy weeds in Gangwon province, Korea.