• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.1
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• pp.68-76
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• 1996

To elucidate the optimum fertilizer level and application method for band application under puddled-soil drill seeding in Jeonbuk series of fluvio-marine alluvial soil at National Honam Agricultural Experiment Station in 1995, using Dongjinbyeo, slow releasing compound fertilizer of 100％ and 80％ to conventional application level was applied totally as basal fertilizer simultaneously with seeding under 3cm and 5cm depth from soil surface in a distance of 4cm from the seeded row. Plant height was taller and tiller number was higher in band application than conventional application but ratio of effective tiller was vice versa. Panicle number was more but ratio of effective tiller ratio was lower in 100％ than 80％ level of band application and they were higher in 3cm than 5cm depth from soil surface. Leaf area index and dry weight was higher in conventional application at early growth stage but was vice versa after maximum tillering stage, and they were higher in 3cm depth at early growth stage but 5cm depth after maximum tillering stage. NH$_4$-N in soil was higher in conventional application at 25 days after seeding but, thereafter was lower than band application and it was higher in 3cm than 5cm depth till 40 days after seeding but was versa, thereafter. Lodging degree was slightly higher in band application, 100％ level and 5cm depth than in their counterparts. Panicle number and grain number per $m^2$ was lower in conventional application than 80％ or 100％ level of band application without significant difference between band application levels or application methods. Yield was higher at 80％ level of band application under 3cm depth than conventional application, but no significantly different among other application methods. Therefore, 80％ level of band application under 3cm depth of soil surface was more effective for puddled-soil drill seeding on the basis of the reduction of application efforts, better plant growth and higher yield in rice.

• Journal of Photoscience
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• v.9 no.2
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• pp.394-396
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• 2002

The emission of microwave sulfur lamp is mainly composed of visible light. This lamp producing little infrared radiation, has high light efficiency, long lifespan and less power consumption. In comparison with xenon lamp, growing under sulfur lamp apparently postponed jointing, increased the number of tillers, accelerated root growth of wheat. Relatively, xenon lamp evidently promoted heading and grain maturation. The development characteristics of wheat plant under sulfur lamp were more similar with that in natural condition.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.267-270
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• 2003

This paper presents a recent finding from the progressed research efforts on the application for wastewater reclamation and reuse for agricultural uses. Reclaimed effluents from the Suwon municipal sewer treatment plant has been used to irrigate paddy rice at experimental plots. Three levels of reclamation treatments, filtration, disinfection, and the both, and one treatment to apply heavily polluted stream flow are compared to the control which uses groundwater for irrigation. The rice growth indicated by plant height and tiller number, and the yields were compared statistically among the five treatments. The results showed that the rice yields from polluted stream were greatest, and the control showed the lowest yields. And the first year experiment indicated that the agricultural reuse is promising.

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.603-606
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• 2003

This study was carried out to investigate the effects of T-P concentrations in irrigation water on the growth, yield, and grain quality of rice. It acquire fundamental knowledges to set up irrigation water quality standards. The pot experiment was conducted with 5 treatments using irrigation waters. It consisted of various total phosphorus concentrations(control, 1, 2, 5, 10mg/L) and replicated four times with randomized block design. The results of this study showed that as T-P concentrations in irrigation water increases, plant height tended to increase. Dry weight of rice plant at T-P 10mg/L was significantly higher than the control. However, T-P in irrigation water did not affect plant height, tiller number, plant dry weight, yield, and quality of rice.

• Korean Journal of Plant Resources
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• v.17 no.2
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• pp.102-106
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• 2004

To determine the optimal planting density of wanggol in southern areas of Korea, Gangsan early local, the highest yielding variety was grown under four different plant density. Yield components such as stem length, number of tiller, stem diameter were highest at the plots with 18 cm row spacing and 18 cm plant spacing. Dry cortex and medulla yield were highest at the plots of 18 cm row spacing and 18 cm plant spacing. Judging from the results reported above, at optimum planting density of wanggol seemed to be 18 cm row spacing and 18 cm plant spacing.

• Korean Journal of Plant Resources
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• v.19 no.3
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• pp.401-404
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• 2006

In order to select the seeding machine for mechanizing cultivation of rapeseed in southern areas of Korea, three different seeding machines, ridge rotary, power tiller ridge rotary, tractor ridge rotary were used for sowing one of the high yielding rapeseed cv. Hybrid with five different seeding methods. Seeding of ridge rotary was reduced the seeding effort with 45% and yield components such as plant height, ear length, number of branches and pods, pod length and seed setting rate were higher. The seeding of ridge rotary also was showed highest seed yield. On the basis of time requirement for seeding, vegetative and yield parameters ridge rotary seeding machine was a suitable seeding machine for rapeseed cultivation at the southern area of Korea.

• The Journal of Natural Sciences
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• v.5 no.1
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• pp.5-13
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• 1992

맥반석을 벼에 시용하였을 때 벼의 초장 및 분벽경수 는 증가하였고 건물율 및 근발생율도 증가 하였다. 맥반석을 시용함으로서 벼의 초장이 6~9cm정도 단간화되었으며 총분벽경수 및 유효분벽경수도 현저하게 증가하였다. 벼의 정조중에 있어서는 맥반석 100kg시용구에서 무처리구보다 19.9%가 더 증수되었고 500kg 시용구에서는 15.5%가 증수되어 시용량에 관계없이 맥반석은 벼의 수량증가에 효과적이었다.

• Journal of The Korean Society of Grassland and Forage Science
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• v.18 no.2
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• pp.163-170
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• 1998

This research was carried out to determine the sowing rate and row distance in Edirne province of Thrace Region in 1993 season. According to the results of some important characteristics of sorghum and their interactions were statistically significant. In Havsa and Uzunk'opr& the plant height were 70.36 and 95.28cm respectively, within each sowing rate were not significant. Number of tiller were not significant in distance and individual location Increasing the sowing rate kom I to 3 kg/da and the location Havsa and Umnkoprii resulted in significant stem diameter variation. Variation in 6-esh fodder yield has been found significant in row distance sowing rate and location 1 kglda seed rate with 30 cm row distance together are recommended to the farmer community to obtain the optimum profit.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.46 no.2
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• pp.84-88
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• 2001

Two methods of nitrogen application at the 4th leaf stage were evaluated in direct-seeding rice cultivation on dry paddy soil: one was the top dressing of nitrogen on dry paddy condition before irrigation (TNDP) for labor saving, and the other was the top dressing of nitrogen on dry paddy with mechanical rotavation of the inter-row space (TNDPIR) for increasing the efficiency of nitrogen. To evaluate these two application methods, leaf chlorophyll contents, growth characteristics and yields were compared with two conventional methods, basal application (BA) and top dressing on flooded paddy condition at the 4th leaf stage (TNFP). The SPAD value of rice in TNDP was similar with that in TNFP throughout the whole growth stage of rice. Also, there were no differences in rice growth and yield between the two methods. However, in TNDPIR, the SPAD value was the highest during tillering stage among the four application methods, and the tiller number, LAI at heading stage and the panicle number were higher than the two conventional methods.

• Korean Journal of Plant Resources
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• v.9 no.3
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• pp.249-253
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• 1996

The study was conducted to investigate the effect of the culture with trickle with trickle irrigation in transparent vinyl house on the seed productivity of onion. Growth, number o tiller and leavers, plant height, leaf sheath length, flowering rate, diameter of flower wheel, number of little flower per flower stalk and fertilization rate are best in the case of the seed production under the culture with trickle irrigation in transparent vinyl mulching house, catch in the rain with vinyl from February to March, so it is found that it is appropriate to plant the onion mother bulb under the culture with trickle irrigation in transparent vinyl mulching house, catch in the rain with vinyl from February to March in the Southern areas of Korea.