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Jong Myung Choi(최종명),Ahmed Latigui(아흐메드 라티기),Moo Kyung Yoon(윤무경) 한국원예학회 2010 원예과학기술지 Vol.28 No.5
This research tested five modified Hoagland solutions for proper fertility management of nitrogen in ‘Seolhyang’ strawberry cultivations. The changes of nutrient solutions were in total nitrogen concentrations (meqㆍL?¹) such as 0 (NO?₃), 2.5 (NO₃?), 5 (NO₃?), 10 (7.5NO₃? + 2.5NH₄?) and 15 (10NO₃? + 5NH₄?). The fresh weight and NO₃-N concentrations in petiole sap responded to the elevated nitrogen concentrations in fertilizer solution in quadratic (y=7.10+2.668x-0.115x², R²=0.7983***) and linear (y=26.14+5.245x, R²=0.6083***), respectively. The dry weight and N content of the above ground plant tissue responded to the elevated nitrogen in quadratic (y=2.140+0.492x-0.022x², R²=0.6110***) and linear (y=0.569+0.033x, R²=0.6952***), respectively. In our experiment the solution with 5 meqㆍL?¹ of NO₃? showed positive results in both dry and fresh weight productions. However, a future research about modification of this solution and growth and nutrient uptake response is necessary to achieve better growth of ‘Seolhyang’ strawberry.
‘설향’ 딸기 번식을 위한 자루재배시 상토의 물리·화학성이 모주 생육과 자묘 발생에 미치는 영향
최종명(Jong Myung Choi),박지영(Ji Young Park),라티기(Ahmed Latigui) 한국원예학회 2011 원예과학기술지 Vol.29 No.2
The influence of physicochemical properties of root substrates on the growth of mother plants and occurrence of daughter plants in ‘Seolhyang’ strawberry propagation were investigated through plastic bag cultivation. Six different formulations of root substrates were coir dust + perlite (5:5, A), coir dust + perlite (6:4, B), coir dust + perlite (7:3, C), coir dust + coconut chip (7:3, D), coir dust + coconut chip (6:4, E), and peatmoss + vermiculite (5:5, v/v; F). The total porosities (TP) and container capacities (CC) of all root substrates were higher than 85% and 55%, respectively, indicating that all substrates were in the acceptable range. But the TP and CC of F substrate were 91.5% and 60%, respectively, which were the highest among the root substrates tested. In the soil chemical properties analyzed before planting and after harvesting of ‘Seolhyang’ strawberry mother plants, the root substrates of A, B, C, and F had higher electrical conductivity and NO3-N concentrations than those of D and F. The root substrates of A, B, C, and F had heavier runner fresh and dry weights, longer runner lengths, and more daughter plant occurrence than those of D and F. The treatment F had higher tissue N content than any other treatments at 120 days after the transplanting of ‘Seolhyang’ strawberry and statistical differences were not observed among remained 5 substrates. The treatment of F also had the higher tissue contents of other nutrients except N analyzed at 120 days after transplanting. These results indicated that soil chemical properties rather than physical properties severely influenced the growth of runners and occurrence of daughter plants.