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Effect of Nitrogen Application Rate on Growth and Yields of Aster scaber Thunb. and Ligularia fischeri Turcz. in the First Year after Transplanting

참취와 곰취의 정식 후 1년차 수량 및 생육특성에 미치는 질소 시용 효과

  • Published : 2009.09.30

Abstract

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 = $-0.296x^2$ + 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 = $-0.135x^2$ + 32.86x + 1529 ($R^2$ = 0.965) in the first year trial after transplanting.

Keywords

Aster scaber Thunb.;Ligularia fischeri Turcz.;Alpine sloped farmland;Nitrogen

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