• FLOWER RESEARCH JOURNAL
• /
• v.18 no.3
• /
• pp.171-178
• /
• 2010

This work is for selecting superior media which is similar to Peat Moss that is in general use as media of Gymnocalycium mihanovichii for Export such as 'Hwang wall' but lower price. The result on growth of 7 kinds of media (Peat Moss, BM6 Culture Medium, Coco Peat, Hydro Cray, Hydro Ball, Hugato, Vermiculite) which are applied watering (overhead irrigation, sub irrigation) based on bichemical analysis including chemical, physical analysis are following. The result of bi-chemical analysis shows that Coco Peat was stabilized planting after 90 days and Hydro Ball has high water holding capacity. The experimental result of growth in grafted cactus 'Hwangwall' shows Coco Peat is similar to Peat Moss on organic matter and in case of inorganic media, Hugato, Vermiculite, Hydro Cray made satisfactory results. But, the weight of inorganic media is too light to be tied. Consequently, Coco Peat and sphagnum moss as organic media has lower price and the condition of growth is analogous to Peat Moss. On the other hands, Hydro Ball was chosen as a substitute of Peat Moss in inorganic media.

• Journal of Mushroom
• /
• v.2 no.2
• /
• pp.60-68
• /
• 2004

Potato dextrose broth was the best inoculation medium to produce in vitro synnemata of Paecilomyces tenuipes. The optimum temperature for synnemata formation of P. tenuipes was $20^{\circ}C$ under 500 lx of light intensity. Highest synnemata production was observed at 18 hr of light period per day. The medium containing 50 g of each silkworm pupae and brown rice produced highest number of synnemata. The optimum ratio of brown rice to distilled water was found as 1:1. Mycelial growth and synnemata production of P. tenuipes was faster and higher in medium containing grinded pupae as compared to whole pupae. The optimum inoculum amount per bottle of medium was 15ml. The highest synnemata production of P. tenuipes was obtained by incubating rice pupae medium at $24^{\circ}C$ until mycelium grows sufficiently after inoculation and then transferring it to $20^{\circ}C$ chamber till harvest.

• Korean Journal of Organic Agriculture
• /
• v.13 no.3
• /
• pp.291-300
• /
• 2005

Diseases were surveyed in 5 Rice paddy field areas of Organic paddy field and conventional paddy field. The 3 major diseases, rice leaf blast, bacterial leaf blight and sheath blight in rice were surveyed at duck raising, rice bran and conventional rice paddy field. They were serious in duck raising paddy field, rice bran paddy field more than conventional paddy field. The Ilpum variety were infected seriously more than Chucheong. At the effectivity test of the environment-friendly substance for the rice-seed sterilization, 1000-times diluted brown-rice vinegar showed controlling effect against Bakanae disease, and germination rate also was good. There was no Weeds Control efficacy by cultivating of hairy vetch in rice paddy field. However, extract of hairy vetch Leaf and root repressed the germinating of lettuce seed.

• Journal of Bio-Environment Control
• /
• v.17 no.2
• /
• pp.138-142
• /
• 2008

To develop suitable alternative substrates in hydroponics of sweet pepper, changes of water contents of substrates and electric conductivity (EC) of drainage nutrient solution, growth and fruit characteristics according to the kind of coir substrates were investigated compared with rockwool. In all coir substrates compared with rockwool during growing period, water contents were higher, EC of drainage nutrient solution except for fiber 50% were lower, and the coefficient of variation were a little, especially were so in fiber 30% of coir substrates. Plant growth in fiber 30% substrate was better than others but there was no significant difference. Photosynthesis rate and chlorophyll content were best in fiber 50% substrate. Fruit weight was no significant difference, but LID ratio and shape of the fruits were good in fiber 50% substrate and rockwool as which were close to regular square. Therefore, it was estimated that mixed coir substrates with fiber $30{\sim}50%$ are enough in possibility as alternative substrate.

• Journal of Mushroom
• /
• v.6 no.3_4
• /
• pp.131-137
• /
• 2008

These experiments were conducted to search for the optimum media size and composition for culture of Lentinula edodes (JNM3022). Considering the incubation period and the successful culturing rate, the optimum media size was length 25 $cm{\times}diameter$ 14 cm (weight 2.5 kg). The saturation moisture amount of Oak sawdust was 251 ml/100 g. It is a half of pine sawdust 495 ml/100 g. Considering the hypha growing speed and hypha density, the optimum media composition was Oak sawdust 80%+ wheat bran 20% and Oak sawdust 80%+ rice bran 20% In 10 treatments of media composition. The optimum moisture amount of media for growing Lentinula edodes (JNM3022) was 55%. Injection pipe with 20 holes in media was reduced the incubation periods to 11 days when 20cm length media and 32 days when 30cm length media compare to control. The best method for browning media surface was change temperature condition above $10^{\circ}C$ and punching the vinyl bag. This treat could shortened the browning periods to 54 days.

• Journal of Bio-Environment Control
• /
• v.13 no.3
• /
• pp.125-129
• /
• 2004

This study was conducted to identify the growth characteristics of melon cultivated with mixture medium of scoria and perlite in capillary system. The growth and fruit characteristics of all cultivars cultivated under the nutrient solution capillary supplying system were comprehensively favorable. Fresh fruit weight of the three cultivars was similar to weight criterion (1.8 - 2.0 kg/fruit) of melon. In melon of non-net type ‘Aris’ there were no differences in fruit characteristics between nutrient solution supply methods, but total soluble solid (TSS) was higher in drip and capillary systems showing $15.6^{\circ}$Brix and 15.5$^{\circ}$Brix, respectively, than that of mist spray system showing $14.4^{\circ}$Brix. In melon of net type, ‘Earl's elite’, drip and capillary systems showed better fruit characteristics and higher values of TSS compared to mist spray system. The change in pH in the medium before and after melon cropping was not significant between systems, but the pH of upper layer within medium in all system was higher than that of lower layer. The mineral content within lower layer showed higher value than that of the upper layer in drip system, but reversed in capillary system.

• Journal of Bio-Environment Control
• /
• v.18 no.4
• /
• pp.348-353
• /
• 2009

Organic materials reveal the remarkable absorption and high buffer capacity for nutrient. Hence, organic materials need some different nutrient management skill from inorganic one. The objective of this study was to evaluate the effect of EC level of nutrient solution on the yield and quality of cut rose grown in the mixed substrate of coir and perlite. 3 EC levels of nutrient solution was treated, which were 0.7, 1.0, 1.3 times of standard solution (Aichiken solution, Japan) for cut rose hydroponics. EC of the standard solution was changed by season following as 1.4 (Apr.~June), 1.0 (July~Aug.), 1.4 (Sep.~Oct.), and $1.6dS{\cdot}m^{-1}$ (Nov.~Mar.) subsequently. The supply of nutrient solution was controlled by the signal of water potential at -5kPa using frequency domain reflectometry (FDR) sensor. As the results, marketable yield was similar for all treatments until 3rd harvest, but was decreased in high EC level from 4th harvest to 7th harvest as final. 0.7 times of standard solution decreased the ratio of unmarketable rose having short stem below 70cm and increased the ratio of high quality rose having long stem above 91cm. The flower weight and stem diameter of cut rose was higher in the low EC treatment than the others.

• Journal of Mushroom
• /
• v.18 no.4
• /
• pp.303-310
• /
• 2020

The cultivation of Sparassis crispa in the beginning of the 2000s in South Korea, and the cultivar 'Neowul' bred in the Chonbuk Agricultural Research and Extension Service were registered first in 2016. However, there is no manual for the cultivation of Sparassis crispa, and therefore, there remains a big difference in its harvest rate across farms. Herein, we aimed to study the primordium formation conditions of Sparassis crispa 'Neowul' according to the medium pH, medium moisture content, and inoculum volume of liquid spawn and develop a stable production technology. We found the annual yield per bottle relating to the cultivation period, harvest rate, and the weight of fruiting body to be the highest at 363.6 g in the area cultivated at pH 3.8. However, it is thought that cultivation by adjusting the pH to 3.9±1 would be necessary for stable production, considering that at pH 3.6, the yield sharply reduced to 189.5 g. Moreover, the culture period was shorter at pH 4.0 compared with that at pH3.8, and the cultivation period at pH 4.0 was the same as that at pH 3.8. No significant difference in the weight of the fruiting body at different conditions was recognized. Additionally, it is difficult to regulate the pH precisely in practical applications in the farms. It is thought that 341.8 g Sparassis crispa will be produced per bottle annually if the medium moisture content is adjusted to 65%, liquid spawn inoculum volume is equivalent to 4% of the medium volume, and the humidity in the culture room is set to below 50%.

• Journal of Mushroom
• /
• v.20 no.2
• /
• pp.61-68
• /
• 2022

We investigated the standard cultivation substrate for Sparassis latifolia "Neowul" bred in Jeollabuk-do Agricultural Research and Extension Services. Cultivation characteristics and yield were assessed by varying the kind of sawdust and additives, and the mixing ratio. The cultivation period in larch sawdust was the shortest at 97 days. The yield was excellent (143.6 g). The findings indicated that larch is a tree species appropriate for the cultivation of S. latifolia. When the additives were varied, the yield and productivity (53.1%) were highest (116.6 g) for the wheat bran treatment. Thus, wheat bran would be an additive appropriate for culturing S. latifolia. Concerning the use of different mixing ratios, larch sawdust:beet-pulp:wheat bran ratios of 80:15:5 and 85:10:5 resulted in yields of 114.4 g and 111.4 g, and productivity of 52.5% and 51.8%, respectively. These yield and productivity values were not statistically different. Thus, the standard cultivation substrate for S. latifolia can comprise larch sawdust, beet pulp, and wheat bran at a ratio of 80:15:5 or 85:10:5. The carbon/nitrogen (C/N) ratio assumed to be appropriate for the cultivation of S. latifolia was 184-223. Pinheading would be difficult below a C/N substrate ratio of 105. Thus, the C/N ratio of the media, as well as the pH, would be vital factors affecting pinheading during S. latifolia cultivation.

• The Korean Journal of Mycology
• /
• v.32 no.2
• /
• pp.101-104
• /
• 2004

For artificial cultivation of Phellinus baumii, we have conducted a study on cultural characteristics and condition of fruitbody formation in sawdust cultivation. Mycelial density and incubation rate were higher in oak sawdust+rice bran (4 : 1) medium than oak sawdust 100% medium. However, primordia and fruitbody formation were higher in oak sawdust 100% medium than rice bran added medium. Bigger bottle capacity (1,100 ml) resulted in a little higher yield and more biological efficiency than 850 ml bottle.