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Effects of three biomaterials mixed with growing media on seedling quality of Prunus sargentii
AUNGAUNG,윤우빈,서정민,Huong Thi Thuy Dao,한시호,조민석,박병배 한국산림과학회 2019 Forest Science And Technology Vol.15 No.1
Quality of produced seedlings relies mainly on the substrate on which it grows and develops. In this study, three common biomaterials – pine bark, carbonized rice husk and mushroom sawdust, were mixed with growing media in two ratios (10% and 20%) to assess their effects on growth and seedling quality of Prunus sargentii seedlings in containerized production system. Generally, 10% pine bark treatment showed the highest results among others in some parameters of seedling growth – height and root collar diameter. For total biomass, 10% rice husk treatment was highest, followed by 10% pine bark treatment. Seedling quality index at 10% rice husk treatment resulted highest (24% increase compared to control) followed by 10% pine bark treatment (20% increase compared to control). Our results suggested that both rice husk and pine bark can be used in 10% mixed ratio to growing media to gain the qualified P. sargentii seedlings in forest nurseries, which in turn, will help to establish successful reforestation in the field.
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AUNGAUNG,한시호,윤우빈,Loth Meng,조민석,박병배 한국산림과학회 2018 Forest Science And Technology Vol.14 No.3
Biochars are used to improve soil quality and crop productivity as well as to increase carbon sequestration in soil. However, it is important to identify the characteristics of biochar prior to its application because of the positive and negative effects on soil and crop productivity. The purpose of this study was to investigate the effects of charcoals on the growth and seedling quality of Quercus serrata and Prunus sargentii in a containerized seedling production system. Two of the charcoals used in our research were from oak tree; one produced at 1200 C and the other at 700800 C, and a bamboo charcoal produced at about 800 C. Three charcoals were mixed with artificial soil (peat moss, perlite, and vermiculite with a ratio of 1:1:1 (v/v/v)), and applied commercial fertilizer at two concentrations; 0.5 and 1.0 g L1. Growth parameters, such as height, root collar diameter, and dry weight, were decreased in charcoal treatments compared to control. However, charcoal treatments significantly increased the quality index of seedlings by 8.3% in Q. serrata and by 19.9% in P. sargentii. Our results suggested that charcoal can be applied to improve seedl
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윤우빈,한시호,서정민,AUNGAUNG,Huong Thi Thuy Dao,안지영,박병배,조민석 충남대학교 농업과학연구소 2019 Korean Journal of Agricultural Science Vol.46 No.4
Changes in the physical and chemical properties of soil materials during the nursing process have a great influence on the quality of containerized seedlings and on growth and survival after planting. In this study, the effect of biomaterials and their mixed ratios on the growth of Zelkova serrata seedlings in a containerized seedling production system was investigated. Mushroom sawdust, pine bark, and carbonized rice husk were used as biomaterials. The mixed ratios were 10% and 20% volume ratio of the growing medium volume, including the untreated controls. There was no significant difference in the height growth of the Zelkova serrata seedlings according to the biomaterials. The root collar diameter was the highest with the 20% carbonized rice husk and the lowest with the mushroom sawdust. The difference between the highest quality index and the lowest quality index was 30% in the order of the carbonized rice husk, pine bark, control, and mushroom sawdust, but there was no statistical significance. In this study, if the growing medium mixed with biomaterials does not reduce the seedling growth compared with the control, it is considered that the biomaterial can replace a part of the growing media. Therefore, the results show that some of the growing media can be replaced with carbonized rice husk or pine bark when producing Zelkova serrata seedlings.
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서정민,안지영,박병배,한시호,윤우빈,AUNGAUNG,Huong Thi Thuy Dao,조민석 충남대학교 농업과학연구소 2019 Korean Journal of Agricultural Science Vol.46 No.1
The materials of artificial soils in the production process of container seedlings have a great influence on plant growth. Peat moss, vermiculite, and perlite have been used as major components of artificial soils for many years; however, they could decrease carbon fixation carried out by the soil and cause environmental problems such as a change in the water quality. Thus, environmental friendly materials to replace them must be developed. The purpose of this study was to verify the optimum additive materials of artificial soils and their mixed ratios for the growth and seedling quality index (SQI) of Quercus serrata. Rice husk, mushroom sawdust, and pine bark were each used as an additive material and mixed into the growth medium at 10% and 20% of the total volume. There was no significant difference in the height growth of Q. serrata. The 20% mushroom sawdust decreased the root collar diameter by 23.4% compared to the control. The total dry weight was highest with the 10% rice husk and was significantly lower by 10.3% for the 20% mushroom sawdust compared to the control. Additionally, the SQI for all the treatments showed no tendency to increase compared with the control. Thus, this study showed the possibility of recycling biomaterials from agriculture and forest for seedling production. This method could reduce environmental problems and help eco-friendly nurseries to achieve a carbon negative impact by the recycling of by-products.
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Huong Thi Thuy Dao,Woo Bin Youn,한시호,서정민,AUNGAUNG,안지영,박병배 강원대학교 산림과학연구소 2019 Journal of Forest Science Vol.35 No.1
The composition of artificial soil in a containerized seedling production plays an important role in seedling quality as well as environmental issues. We investigated the effects of different types of biomaterials and mixed ratio with artificial soil on the growth of Fraxinus rhynchophylla seedlings. Soil medium was supplemented with 3 levels (0%, 10%, 20%) of pine bark, mushroom sawdust and rice husk. Root collar diameter (RCD), height growth, and biomass have significantly increased when rice husk was applied. Compared with the control, RCD and height growth showed highest in 20% rice husk treatment with an increase of 5.7% and 17.6%, respectively. In contrast, the treatments of pine bark and mushroom sawdust showed lower results in growth parameters (RCD, height growth, and total biomass) than control. Seedling quality index was also highest at the 20% rice husk treatment, but there was not statistically different among treatments. Our results suggested rice husk can be substituted up to 20% of substrates for containerized F. rhynchophylla seedling production system.
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