• Title/Summary/Keyword: cutting with leaves

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The Study on the Effect to the Yields with the Intermediate Cutting Periods of Mulberry Branch and at the Picking Levels of Leaf Remains in Autumn (추잠기 중간벌채시기 및 잔조에서의 적엽정도가 뽕의 수량에 미치는 영향에 관한 연구)

  • 김문협;김호락;최하자
    • Journal of Sericultural and Entomological Science
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    • v.13 no.2
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    • pp.81-94
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    • 1971
  • This research is conducted to study the effect to rebbuding, death atop, yielding and occurrence of twig blight disease with the interemediate cutting periods of mulberry branch and at the picking levels of leaf remains in autumn. The results obtained are as follows: 1. Re-budding branches are decreased with delaying of interval cutting period, and that more leaves remained lesser both re-budding branches and buds are observed. Therefore, it is better that leaves remained are placed on the upper part of branch, practically with 3-5 leaf remains. It has decreased re-budding branches, in case cutting is conducted in Sept. 20 with picking leaving 3-5 leaf on. 2. With regard that all picking increases the percentage of death atop of the branch and upper half part picking increases slightly over the other treats. Although it seems unlikely to be different in the other treats with cutting period, exception of all picking, it is elucidated better that the all picking after cutting in Sept. 15 represents unusually high, seemingly effected by the temperature contition preferable to the life of twig blight disease along with the lack of branch nutrition caused by the all picking. 3. In view of yielding, it has no difference in autumn yielding with cutting period, but more picking levels of leaf remains, more yielding. In spring yield, both no picking and all picking is the lowest, in spite of cutting period. Each treat produces high yielding except the no picking if rutting is done in Sept. 15 and Sept. 20, respectively; otherwise it is done earlier or later, each treat produces low yielding. It is suggested that yielding ability in following spring affected by the autumn picking because all picking treats represent lower yielding ability than no picking ones except of cutting in Sept. 15 and Sept. 20. With respect to total yield in spring and autumn, it is represented that other treats, among which cutting in Sept. 15 and Sept. 20 is especially high, produce higher yielding than both no picking and all picking. But no difference seemed in leaf remained treats. In these respects, it may be concluded that 3-5 leaf remains after the interval cutting in Sept. 15 to Sept. 20 increases the yielding throughout two seasons and it is suggested that 3-5 leaf remains after cutting in Sept. 5 to Sept. 10 has no difference with no picking and cutting after that day. 4. Diseases in the branch remained are twig blight, massaria-bye, and Die-back, of which twig blight attacks tremendously and slight ouurence in messaria-byo and Die-back. In ouurence of twig blight, it is appeared much in all picking and seasonal occurence high in Sept. 15 with 92.9, and in Sept. 30 with 100 as index, respectively. Also it occurs ,considerably in upper part picking but little occurrence in no picing. 5. It is considered that negative correlation among re-budding percentage. No. of re-budding leaf, and spring yielding is found, seemingly without heavy correlation at -0.42, and -0.27, respectively. However, death atop of branch and occurence of twig blight has little correlation with spring yield. On the other hand, positive correlation highly appeared with the correlation coefficient at 0.8 between occurence of twig blight and death atop of branch.

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Effects of Nitrogen Fertilization on Nitrate Accumulation in Italian Ryegrass (질소시비 수준이 Italian Ryegrass의 질산염 축적에 미치는 영향)

  • Chung, Wan-Tae;Choi, Ki-Chun;Youn, Chang;Song, Chae-Eun;Chun, Woo-Bock
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.17 no.2
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    • pp.135-140
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    • 1997
  • This study was conducted to investigate the effect of levels of nitrogen fertilizer on the nitrate accumulation in Italian ryegrass. Italian ryegrass was grown at the experimental field, College of Agriculture, Chonnam National University, Kwangju from September, 29, 1987 to June, 24, 1988. The experiment was arranged as a randomized complete block design with three treatment(2.5, 7.5 and 15kg-NIlOa). The results obtained are summarized as follow; Nitrate nitrogen content of the stem, leaves and whole was increased as increasing nitrogen fertilizer(P< 0.05). Total nitrogen content in the leaves was much higher than that of stem, and not significance among the levels of nitrogen fertilizer. Total water soluble carbohydrate content in stem was higher than that in the leaves and decreased after cutting as increasing nitrogen fertilizer(P < 0.05)

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Photosynthesis and Regrowth of Leaf in Sorghum-Sudangrass Hybrid, Pearl Millet, and Barnyard Millet after 2nd Cutting (청예용 수수-수단 그라스 잡종, 진주조, 사료용 피의 후기 생육에서 재생엽의 생장과 광합성)

  • 이호진;김태훈
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.38 no.5
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    • pp.466-476
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    • 1993
  • Field experiment was carried out to study the new and old leaf development and photosynthesis of sorghum-sudangrass hybrid 855F, pearl millet Suwon No.6 and barnyard millet in cutting and non-cutting plots from the 2nd cutting day(September, 17th). Leaf regrowth of sorghum-sudangrass hybrid and pearl millet begun after the 2nd cutting day, except barnyard millet. Photosynthetic rate of new leaf blades in cutting plots reached to higher level than old leaf at 12th to 20th day after cutting(DAC). Stomatal density of leaf blade of each crop in non-cutting plot was observed higher pearl millet and sorghum-sudangrass hybrid than barnyard millet. New leaf blade of each crop in cutting plot was showed complete development in stomata size, form and vascular bundles in 12th DAC. Non-structural carbohydrates(NSC) contents of stembase in sorghum-sudan hybrid which had 17 %, the highest among three forages decreased daily into 8th DAC and begun to increase from 20th DAC. But, those of pearl millet and barnyard millet in cutting plots were about 10 % at cutting day and inclined to decrease continuously into the 20th DAC and reached about 3~4% in 32nd DAC. These results showed that regrowth energy of sorghum-sudangrass hybrid was mainly dependent on non-structural carbohydrates of stembase until 12th DAC, but pearl millet had active lower leaves supported its regrowth by concurrent photosynthesis. As barnyard millet which did not reserve enough NSC, its regrowth fail to survive under low temperature. Also, late regrowth of rest two forage crops was delayed with decreasing daily temperature after mid-September.

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Characteristics of Nursery Plants Influenced by Leaflet and Raising Method for Soft-Nodal cuffing in Cherry Tomato (토마토 절간(節間)을 이용한 마디삽목 시(時) 삽수의 절위(節位)와 삽수의 소엽(小葉)부착 유무가 묘(苗) 소질에 미치는 영향)

  • Yang, Seung Koo;Son, Dong-Mo;Choi, Kyung Ju;Kim, Sang Chaul;Kim, Wol-Soo;Chung, Soon Ju
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.483-487
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    • 2001
  • This study was carried out to investigate the role of attached leaflet on rooting and growth by one nodal cutting in tomato. As cutting sources 4 to 6 nodes could be obtained from one nursery seedling. Medium for cutting was a mixture with perlite plus peat moss (1 : 1, v/v), and each plug capacity was 30mL in the 72 cells-plug tray. Plant height and the number of leaves were significantly increased by attached leaflet cutting in 'Pepe' and 'Coco' cherry tomato. Dry weights of top and root were increased as much as 3 to 15 times in the cutting attached leaflet. Rooting percentage was 93.5% in one node cutting and 86% in the cutting with hypocotyl node part. At 20 to 24 days after nodal cutting, healthy nursery plant could be produced to transplant in field. The nursery plants by nodal cutting (NPNC) showed more fibrous roots and less tap roots than that of seedling. In terms of rooting pattern, NPNC rooted at the whole ground stem part, while rooting of seedling occurred at basal part of hypocotyl.

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Changes in Vitamin C and Minerals Content of Perilla Leaves by Different Cooking Methods (조리에 의한 깻잎의 비타민C 및 무기성분의 변화)

  • 최영희
    • Korean journal of food and cookery science
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    • v.19 no.2
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    • pp.174-180
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    • 2003
  • The purpose of this study was to investigate the differences in vitamin C and mineral contents in perilla leaves as a result of different cooking methods. The results are summarized as follows. In cutting up the perilla leaves, the vitamin C content decreased by 40% with no significant difference made to the mineral content. Steaming was more effective in retaining vitamin C compared to blanching. With increasing treatment times. decreasing amounts of vitamin C remained. There was no significant change in mineral contents except for potassium. In the case of treating with vinegar or lemon juice, more vitamin C remained than when not treated, and there was little influence on the mineral contents. In the solubilization effect of calcium seasoned with acid, rice vinegar was most effective followed by lemon juice, apple juice, brown rice vinegar, then persimmon vinegar. There was a little or almost no vitamin C remaining in kkaennip kimchi. In terms of storing time, raw seasoned kkaennip kimchi had higher mineral contents than blanched or steamed kkaennip kimchis.

Gas Exchanges and Dehydration in Different Intensities of Conditioning in Tifton 85 Bermudagrass: Nutritional Value during Hay Storage

  • Pasqualotto, M.;Neres, M.A.;Guimaraes, V.F.;Klein, J.;Inagaki, A.M.;Ducati, C.
    • Asian-Australasian Journal of Animal Sciences
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    • v.28 no.6
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    • pp.807-815
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    • 2015
  • The present study aimed at evaluating the intensity of Tifton 85 conditioning using a mower conditioner with free-swinging flail fingers and storage times on dehydration curve, fungi presence, nutritional value and in vitro digestibility of Tifton 85 bermudagrass hay dry matter (DM). The dehydration curve was determined in the whole plant for ten times until the baling. The zero time corresponded to the plant before cutting, which occurred at 11:00 and the other collections were carried out at 8:00, 10:00, 14:00, and 16:00. The experimental design was randomised blocks with two intensities of conditioning (high and low) and ten sampling times, with five replications. The high and low intensities related to adjusting the deflector plate of the free iron fingers (8 and 18 cm). In order to determine gas exchanges during Tifton 85 bermudagrass dehydration, there were evaluations of mature leaves, which were placed in the upper middle third of each branch before the cutting, at every hour for 4 hours. A portable gas analyser was used by an infrared IRGA (6400xt). The analysed variables were photosynthesis (A), stomatal conductance (gs), internal $CO_2$ concentration (Ci), transpiration (T), water use efficiency (WUE), and intrinsic water use efficiency (WUEi). In the second part of this study, the nutritional value of Tifton 85 hay was evaluated, so randomised blocks were designed in a split plot through time, with two treatments placed in the following plots: high and low intensity of cutting and five different time points as subplots: cutting (additional treatment), baling and after 30, 60, and 90 days of storage. Subsequently, fungi that were in green plants as well as hay were determined and samples were collected from the grass at the cutting period, during baling, and after 30, 60, and 90 days of storage. It was observed that Tifton 85 bermudagrass dehydration occurred within 49 hours, so this was considered the best time for drying hay. Gas exchanges were more intense before cutting, although after cutting they decreased until ceasing within 4 hours. The lowest values of acid detergent insoluble nitrogen were obtained with low conditioning intensity after 30 days of storage, 64.8 g/kg DM. The in vitro dry matter of Tifton 85 bermudagrass did not differ among the storage times or the conditioning intensities. There was no fungi present in the samples collected during the storage period up to 90 days after dehydration, with less than 30 colony forming units found on plate counting. The use of mower conditioners in different intensities of injury did not speed up the dehydration time of Tifton 85.

Studies on the quantitative difference of assimilation under various conditions in mulberry trees. (상수에 있어서 각종조건에 따르는 동화량의 차에 관한 연구)

  • 임수호;김문협
    • Journal of Sericultural and Entomological Science
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    • no.12
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    • pp.5-11
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    • 1970
  • These works were conducted to investigate the differences of assimilatory productivity under various conditions of cultivation in mulberry trees with the punch method based on dry matter production. The results obtained are as follow: 1. The dry matter of mulberry leaves at 150cm to 200cm high in the morning and from 50cm to 100cm high in the afternoon were higher than other conditions. 2. In daily change of assimilatory, the production of the leaves from 150 cm to 200 cm high in the morning and from 50 cm to 100 cm high in tile afternoon were higher than other conditions. 3. The largest amount of leaf dry matter was produced in south outside of mulberry field, next east outside, and others showed on differences. 4. Increased assimilatory production was occured greatly not only east side of mulberry field from 7 A.M to 10 A.M but also south side of mulberry field from 10 A.M to 1 P.M. 5. In comparison of dry matter production of leaves among varieties, Suwon-sang No. 4 showed greatest amount and followed Sipyung, Kaeryangsuban, Rosang in order. In the varietal differences of assimilatory production per day, Suwonsang No. 4 was greatest and followed Kaeryrangsuban, Sipyung, Rosang in order, 6. Both of the rate of increasing leaf dry matter and net assimilation per day were greatest in the one-half cutting plot and some decreased in one-third cutting plot, in non-cutting plot in order.

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Culture Practice of Green shoot of Chinense Matrimony Vine (Lycium chinense Mill.) I. Effect of Varieties and Cutting lengths on the Growth and Green shoot Yield (구기자나무의 구기순 재배기술에 관한 연구 I. 품종과 구기순 채취길이에 따른 생육 및 구기순 수량)

  • 백승우
    • Korean Journal of Plant Resources
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    • v.9 no.3
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    • pp.279-284
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    • 1996
  • Effects of varieties and cutting lengths of Chinense Martrimony Vine on the growth characteristics and the yield of green shoot were investigated in order to obtain the basic data The Yuseong-2 was observed higher in the number of green shoot per plant, of green shoot, but smaller in the length and the width of leaves than those of Cheongyang native. The number of green shoot was decreased in longer cutting length, but the other growth characteristics were increased. The dry weight of green shoot was $1.01{\sim}0.03g$ and the ratio of stem to leaf in green shoot was higher in leaf than that of stem, and the ratio was 46 : 54. The dry yield of green shoot was $108{\sim}204kg/10a$ in Cheongyang native and $215{\sim}363kg/10a$ Yuseong-2 and the dry yield of green shoot of Yuseong-2 may be expected in this planting year. Each growth characteristic of varieties was highly positive correlation with the yield except the number of green shoot of Cheongyang native. The number of green shoot of Yuseong-2 was nagative correlation with each growth characteristic and the yield except the number of total leaves per plant.

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추파유채 ( Brassica napus L. ) 생육시기에 따른 비구조성 탄수화물 함량의 변화 ( Changes in the Non-Structural Carbohybrate Content during Growth Period in Forage Raps ( Brassica napus L. ) )

  • 전해열;김태환;김병호;강우성
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.14 no.4
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    • pp.331-338
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    • 1994
  • The objective of this study is to obtain the basic data for investigating the potentiality of continuous utilization (first cutting in the late fall and regrowth yield in next spring) of forage rape seeded in fall. Non-structural carbohydrates(NSC) in leaves and roots of forage rape seeded on Oct. 3 were analyzed during a growth period. The greatest change in NSC content was observed between the wintering and the early spring period. The total content of soluble sugar in leaves and roots highly increased from the late fall(Nov. 7) to the wintering period (Feb. 4), and then rapidly decreased on the early regrow^ period(Mar. 31). The contents of fructose and glucose were relatively lower, and their quantitative change also was smaller than those of other sugars through entire growth period. The highest accumulation of sucrose occured hum the late fall to wintering period, and then greatly decreased in the early regrowth period. Sucrose content in roots was 2.3 times higher than that of leaves in wintering period. Starch was the largest pool of NSC and its content in leaves and roots showed a similar pattern with that of sucrose through entire growth period. Starch contents in leaves and roots were 38mg and 189mgl gDM in the late fall(Nov. 7), 187 and 497mg/gDM(Feb. 4) in the wintering period and 69 and 79mglgDM(Mar. 28) in the early regrowth period, respectively. The results clearly showed that the main reserve forms of NSC are starch and sucrose, and that they are hlghly stored in roots in overwintering forage rape.

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Quality Characteristics of Noodles Containing Shoots and Leaves of Aralia elata and Kalopanax pictus (참두릅과 개두릅을 첨가한 국수의 제조특성)

  • Kim, Eun-Ju;Lee, Won-Jong
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.4
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    • pp.571-575
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    • 2012
  • The objective of this study was to evaluate the quality characteristics of noodles made with a dried powder of the shoots and leaves from $Aralia$ $elata$and $Kalopanax$ $pictus$. Ash, protein, and dietary fiber contents of $A.$ $elata$ and $K.$ $pictus$ were higher than those of wheat flour. The protein and fat contents of $K.$ $pictus$ powder were higher than those of the $A.$ $elata$ powder, but ash and dietary fiber contents were less than those of $A.$ $elata$. When the amount of $A.$ $elata$ powder increased, brightness (L) values of dough decreased, and redness (a) and yellowness (b) values of dough increased. The weight and volume of the cooked noodles also increased, as did the turbidity of the soup. Addition of $A.$ $elata$ and $K.$ $pictus$ powders in noodles reduced the cutting forces needed to cut the cooked noodles. The sensory evaluation indicates that noodles with 5% $A.$ $elata$ and $K.$ $pictus$ powder added were the most preferable.