간행물
한국유기농업학회지 KCI 등재 Korea Journal of Organic Agriculture
- 발행기관 한국유기농업학회
- 자료유형 학술지
- 간기 계간
- ISSN 1229-3571 (Print)2287-819X (Online)
- 수록기간 1992 ~ 2020
- 주제분류 농수해양 > 농학 농수해양 분류의 다른 간행물
- 십진분류KDC 523DDC 630
권호리스트/논문검색
Vol.19 No.특별호 (2011년 12월) 73건
41.
2011.12
서비스 종료(열람 제한)
An organic apple (Malus x domestica Borkh.) orchard was established to study the interaction effects of ground cover management systems (GMS) and nutrient sources (NS) on soil and tree nutrient status and tree growth. Trees received one of four GMS: 1) green compost (GC), 2) wood chips (WC), 3) shredded paper (SP), and 4) mowand- blow (MB). Across all GMS, one of three NS was applied: A) a commercial organic ferlilizer (CF), B) poultry Iitter (PL) ， and C) control (NF). Overall, GMS had greater effects on the variables than did NS. GC mulch supplied greater nutrients, followed by WC, SP, and MB mulches. SP trees had lower foliar [N] in the first two years than the GC and WC trees. GC- and WC-treated trees had larger trunk cross sectional area than the SP and MB trees.
42.
2011.12
서비스 종료(열람 제한)
The performance of grass filter strips (GFS) in abating P04-P concentrations from the forage cropland was tested in an experiment on the 10% slope in Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration (RDA) from October 2007 to September 2009. Forage croplands with rye-corn double cropping system applied with chemical fertilizer and livestock manure (LM) were compared in a natural condition. The plots were hydrologically isolated Main plots consisted of the length of GFS, such as Om, 5m, 10m and 15m. Sub plots consisted of the type of LM, such as chemical fertilizer (CF), composted cattle manure (CCM) and composted swine manure (CSM). Concentrations of P04-P in surface runoff water were reduced as the length of GFS increased. Especially, GFS with 10m and 15m reduced PO4-P concentrations significantly compared to that with Om and 5m (p<0.05). The results from this study suggest that GFS improved the removal and trapping PO4-P from forage croplands.
43.
2011.12
서비스 종료(열람 제한)
Jeon, W.T., Seong, K.Y., Oh, I.S., Jeong, K. H., Lee, J.K., Choi, B.S., Kim, C.G., Lee, Y.H., Kang, U.G.
Green manure crops play an inportant role in organic farming. Field experiment was conducted at paddy soi1 (fine loamy, mixed, nonacid, mesic family of Aeric Fluvaquentíc Endoquepts) ín 2008/2009 to 2009/2010 at the Natíonallnstítute of Crop Science (NICS), RDA, Suwon, Gyeonggí provínce, Korea. This expe꺼ment was carried out to evaluate the biomass of haíry vetch (Vicia víllosa) and growth of rice (Oryza satíva) by cjífferent seedíng rates. Seeding rates of hairy vetch consisted of 30, 60, and 90 kg ha-' by broadcasting before rice harvesting. The biomass af)d nitrogen production of hairy vetch were not significantly different between 60 kg ha-’ and 90 kg ha-’ of seeding rates. Also, rice yield was not siginicantly differnt between seeding rate 60 kg ha-’ of hairy vetch and conventional pratice for two years. Therefore, we suggested that seeding rate of hairy vetch should be reduced by continuous cropping and incoportion of hairy vetch under rice-based cropping system.
44.
2011.12
서비스 종료(열람 제한)
The test was carried out at a test field at the Wanju Eco-Farming Complex from 2009 to 2010 to figure out the proper application of fertilizers when growing rice at the EcoFarming Complex. The result showed that when compared to the basal application of compost as fertilizer, applying supplementary compost after natural re-seeding of chinese milk vetch (CM씨 helped balance soìl nutrìtìon and maìntained rice yields.
45.
2011.12
서비스 종료(열람 제한)
Soil NH4-N content became higher in proporlion to the increase in the urea application rate, while in livestock faeces compost (LFC) plots, it became lower than in urea plots and had no significant difference statistically among LFC plots. There was a close relationship between phosphate ferlilization rate and the increment of soil available phosphate content after experiment resulting y=O. 1788x-6. 169 (R~=O. 9425) when applied fused superphosphate ferlilizer, and y=0.0662x-2.689(R~=0.9315) when applied LFCs by the same amounts of phosphate (x: phosphate application, kg ha, y: increment in soil available phosphate content, mg kg). Plant height, number of stems, nutrients uptake by rice and rice yield showed higher levels in N 100, 150% application plots of chemical ferlilizers, while every LFC plots exhibited lower values and no significant difference among them. Relative nitrogen ferlilization efficiencies of LFCs compared to urea was 12.3% for cattle faeces compost (CaFC), 8.8 for swine faeces compost (SwFC) and 24.6 for chicken faeces compost (ChFC), respectively.
46.
2011.12
서비스 종료(열람 제한)
By surveying the 70 composting plants in Gyeonggi Province, the total commercial production of livestock faeces composts (LFCs) in 2008 was estimated to be about 480,000 Mg year-1 and they were manufactured mainly by using both mechanical mixer and bottom air blower. LFCs were composed mainly of chicken faeces 29.2%, pig+chicken faeces 23.1%, pig faeces 20.0%, livestock faeces+oil cake 12.3%, pig+ chicken+cattle faeces 10.8% and pig+cattle faeces 4.6%. On the basis of the current official standard which was revised on March 2010, 11 composts out of surveyed 76 ones did not meet the LFCs quality standard (LQS) due to inadequate content of water (5), OM/N (1), NaCI (2) and Zn (3). The OM/N declined by adding chicken faeces and oil cake, while Ca content increased by the addition of chicken faeces and NaCI increased by adding cattle faeces.
47.
2011.12
서비스 종료(열람 제한)
Organic and chemical fertilizer amendments are an important agricultural practice for increasing crop yields. In order to maintain the soil sustainability, it is important to monitor the effects of fertilizer applications on the shift of soil microorganism, which control the cycling of many nutrients in the soils. Here, culture-dependent and cultureindependent approaches were used to analyze the soil microorganism and community structure under six fertilization treatments, including green manure, rice straw compost, rapeseed cake, pig mature compost, NPK +pig mature compost, NPK and control. Both organic and chemical fertilizers caused a shift of the cultural microorganism CFUs after treatments. Bacterial CFUs of the organic fertilization treatments were significantly higher than that of chemical fertilization treatments. The DGGE profiles of the bacterial communities of the samples showed that the green manure treatment was a distinct difference in bacterial community, with a greater complexity of the band pattern than other treatments. Cluster analyses based on the DGGE profile showed that rice straw compost and pig mature compost had a similar banding pattern and clustered together firstly. Rapeseed cake, NPK, NPK + pig manure compost and control clustered together in other sub-cluster and clearly distinguished from green manure.
48.
2011.12
서비스 종료(열람 제한)
To screen several promising red pepper cultivars, may be adaptable to organic cultivation conditions, seventy six F1 hybrids commercial and eight local purebred red pepper cultivars were tested. Comparing the infection rate of phytophthora blight between commercial (F1 hybrid) and local (Purebred) cultivars, average infection rate of commercial cultivars was 9.8% and that of local cultivars was 17.8%. But the infected fruits rate of anthracnose in field were similar as 3.3% in commercial (F1 hybrid) and 3.1% in local (Purebred) cultivars. In yield characteristics, average yield of commercial cultivars was 2.89 t ha-' and that of local cultivars was 2.22 t ha- ’ . For organic pepper farmers it is more favourable to cultivation purebred cultivars because they can save to the same quality plant next year's crop. In this study among the local purebred cultivars, two cultivars are promising that their yield near to 3 t ha-' and have disease field resistance.
49.
2011.12
서비스 종료(열람 제한)
Organic production practices varied among producers. Generally, organic producers were relying on imported input materials such as organic compost and liquid fertilizer even more than conventional producers. Very few organic farmers had composting facilities or sites for the own supply of compost in need. The productivity of organic kiwifruit orchard (92%) was not as low as that of conventional while the net income (243%) was more than double that of conventional. This was mainly aftributed to high farm gate price of organic fruits, low paid labour use and electricity. As a consequence, organic kiwifruit production seems to become a feasible option in Korea. However, high dependence on imported farming material, fuel and labour for too frequent liquid fertilizer spray should be addressed to achieve long term sustainability of organic kiwifruit production.
50.
2011.12
서비스 종료(열람 제한)
Investigation on oriental melon was carried out for 30 minutes starting at 7 PM every day from March 21 to May 24 to find out the effect of light emitting diode on seedling quality, grafting, growth and flowering of oriental melon. According to the result of the investigation, plant height was longer in Blue, Infrared, Red+Blue and Red treatment and leaf number was higher in Blue, Red+Blue and Infrared treatment than those of control. No big difference was identified between control and Yellow, Green, Ultraviolet treatments. Grafting rate was high in Green, Red+Blue and Green treatment. The number of flower evef}' week in control was nine, the number was almost 1 higher in White and Ultraviolet A treatments, but it was 1 to 4 lower in the rest of treatments. The number of female flowers of control was 10, however, it was 21 in Infrared treatment, 17 in White, 15 in Ultraviolet, 13 in Red+lnfrared, 12 in Blue and Red+Blue, 11 in Yellow and 8 in Green.
51.
2011.12
서비스 종료(열람 제한)
For the development of Boxthorn organic cultivation techniques, we investigated effect of several organic compost as a foundation fertilizer and growing plant fertilizer. And we adopted partly opening rain shelter greenhouse to protect anthracnose. In organic compost applying test yield characteristics of ‘Mixed organic compost’ treatment was the best but in betaine content measurement of dried fruit, ‘Mixed organic compost and nitrogen guano ’ treatment was the best and it’s chlorophyll and 100 fruit weight were also betfer than the other treatments.
52.
2011.12
서비스 종료(열람 제한)
In this study, growth of pepper seedlings was testedby treating organic materials in a plastic green house in Ssangok-ri Dogok-myeon, Hwasun-gun, Jeollanam Province from February 3, 2010 to April 19, 2010. The raised seedlings were planted to the organic planting area with an interval of 70cmx55cm on April 20 in Deogam-ri Gogeum-myeon Wando-gun and red peppers were harvested at 7 times from July 22 to September 29. Before planting, the plant length of the overgrowth of seedlings was reduced by 26.8% using plant powder treatment as compared to the control group. The red pepper yield was 27% higher than in the control group when 20g of bone ash powder and 20g of plant powder were mixed. The yield tended to increase in other treatments compared to the control group.
53.
2011.12
서비스 종료(열람 제한)
When paprika is cultivated during summer season, thrips starts to occur in the early growing season and reaches its peak in late June. In the treatment using Orius laevigatus and Neoseiulus cucumeris, natural enemies to thrips, thrips density was 87.6/trap and 51.31trap on June 23. After Orius laevigatus and Neoseiulus cucumeris were treated twice on June 24 and July 23, the number decreased considerably. On August 23, it was 36.9/trap and 40.3/trap and from the mid August to early September thrips density remained low. Effect of Orius laevigatus and Neoseiulus cucumeris on suppression of thrips density was 35.7% and 44.6% on July 22, however, the number went up to 88.8% and 80.5% on September 3.
54.
2011.12
서비스 종료(열람 제한)
To improve the soil properties of physical and microbial community rice bran and wood charcoal were applied in the continuously cultivated plastic 꺼1m house soil. Soil physical properties were improved by application of rice bran and charcoal compared to chemical fertilizer application (control) by 8-14% in bulk density and 5-9% in soil porosity. Changes in the biological ratio indexes of fatty acids in the soils were detected depending on the inputted materials. Especially in application of rice bran including mixture with charcoal, much more fungi and less bacteria were detected and the ratio of fungi to bacteria was increased, suggesting the more organic carbon metabolically active in these treatments. The high ratio of aerobe to anaerobe suggested the better aerobic conditions were in the soil inputted wood charcoal. From these results, it is important and possible to select some materials for the organic pepper cultivation, which may improve the poor condition soil.
55.
2011.12
서비스 종료(열람 제한)
Effect of seawater on growth of four vegetable crops - Lettuce, leaf perilla, red pepper, cucumber -
The effects of seawater on growth of fettuce(Lactuca sativa L.), leaf perilla(perilIa frutescens var. japonica Hara), red pepper(Capsicum annuum L.) and cucumber(Cucumis sativus L.) seedlings were investigated in the glass greenhouse. These effects were studied on seedlings, and diluted seawater (1%, 5%, 10%, 20%, 50%, 100% v/v) was sprayed enough on feaves. The tested four vegetable crops have well grown up to 10% diluted seawater, but the tested vegetable crops were damaged from increasing salt levels. Of these, lettuce was provided salt-tolerant vegetable crop and red pepper was considered salt-sensitive vegetable crop. The salt tolerance of vegetable crops is different between crops and complicated because of additional detrimental effects caused by accumulated ions or specific ion toxicities in their leaves. These results show that agricultural use of seawater may be benefit crop cultivation in organic farming system as well as in conventional farming system.
56.
2011.12
서비스 종료(열람 제한)
Organic kiwifruits were smaller fruit size but had higher magnesium and dry matter content than conventional, meanwhile, fruil soluble solid content was similar to conventional. There were no significant difference in polyphenol contents and antioxidative capacity between organic and conventional although there were considerable variations among sample orchards. Several minerals were also similar levels in both systems.
57.
2011.12
서비스 종료(열람 제한)
We collected and examined germplasm resources of lettuces, edible chrysanthemums and mallows for organic farmers. We found that 3 genotypes (OL-51, OL-52, and OL- 63) are suitable for organic cultivation. The main use of treatment for grey mold among eco-friendly pest control methods is helpful to increase efficiency of seedgathe끼ng after collecting and evaluating a total of 64 kinds of lettuces- collected 43 South Korea local varieties, 8 kinds cultivated by the Highland Agriculture Research Center, 4 kinds of cultivated lettuces, and 9 kinds for sales- to choose approp꺼ate kinds of lettuces for organic cultivation in South Korea. We chose those with more than 300 leaves (OC-18, OC-44, and OC-51) after evaluation of yield characteristics of a total of 62 edible chrysanthemums. We covered each genotype of seed of edible chrysanthemums when gathe끼ng the seeds by ourselves so as not to decrease the purity of each genotype. We chosed OM-38, OM-39, and OM-40 for their yield performance and germination rates among the total 41 genotypes of mallows. We selected 9 genotypes of lettuces, editable chrysanthemums and mallows with possibility of organic cultivation and found that they can be used permanently through self seed-gathering on organic farms.
58.
2011.12
서비스 종료(열람 제한)
This study was carried out to investigate the effect of soil covering materials such as rice bran, rice hull and saw dust on garlic growth through a field experiment in wintertime. Rice bran was the smallest in term of particle size, but it recorded the highest level of bulk density. The missing plant rate after winter season was relatively high, 59.3%, and that of soil covering materials stood at the low level of 10%. Other growth factors recorded the highest level during application of rice bran. In terms of chemical properties of soil-covering materials, rice bran recorded the highest level of 1.84, 2.34 and 0.16% in the content of N, P, and K, respectively. The subsoil temperature was higher by application of rice bran as compared to that of other materials which stood at the lowest temperature (-90 C).
59.
2011.12
서비스 종료(열람 제한)
An average Korean known to ingest 3.4 times of the nitrate ADI level are found to have taken in 97% of nitrates through vegetables. This study analyzed the contents of nitrates and chlorophyll in organic Chinese cabbages, a major favorite vegetable for Koreans, with a view to lowering daily intake of nitrate. Our findings show that, in organically cultivated cabbages, the further outward the leaf was located, the more significantly the contents of nitrates increased, with the midrib and leaf blade showing positive relationship of r=0. 789 , and =0.659 , respectively. In the case of the midrib, the contents increased as high as 79 times ranging from 40ppm for the innermost leaf to 3, 177ppm for the outermost one, and when it comes to the leaf blade, the contents rose as high as 87 times, showing a range of 40 - 3,481ppm. Our findings also suggest that it is advisable to discard 1/3 of the outermost leaves before eating Chinese cabbages, since the outer leaves with known high contents of chlorophyll also have high contents of nitrates.
60.
2011.12
서비스 종료(열람 제한)
Organic kiwifruit orchard soils were compared with conventional ones in Korea. Soil structure of organic soil had higher gaseous and liquous phase as well as soil porosity in the surface soil. Although the nutritional level of each orchards were quite different among soils, the analysis of both system revealed that organic kiwifruit orchard soil had similar or even higher nutrient level (N and organic matter content in surface soil) compared to conventional ones. The organic matter content of deep soil also had the high tendency in deep soil of organic soil. Higher level of nitrogen in organic surface soil is presumably due to the excessive application of organic compost and liquid fertilizer rather than the contribution by grasses such as green manure. Available phosphorous level of organic system was quite high but similar in surface soil of both system, compared to the recommended level. Potassium, calcium and magnesium levels were also enough in organic kiwifruit orchard soils.
