• Title/Summary/Keyword: mulch

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Agronomic Characters and Soil Nitrogen Dynamics Influenced by Barley Straw Mulch Rates in No-Tillage Direct Seeding Rice Culture

  • Choi, Min-Gyu;Kang, Si-Yong;Kim, Sang-Su;Cheong, Jin-il;Shin, Hyun-Tak;Choi, Sun-Young
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.44 no.3
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    • pp.191-196
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    • 1999
  • In rice-barley cropping systems, efficient utilization of barley straw is essential, both to improve the soil fertility and to conserve the environment. In order to identify the effects of barley straw mulch rates in rice cultivation, a rice cultivar, 'Gancheogbyeo', was directly seeded on a no-tillage field synchronized with barley harvesting with five barley straw mulch rates, i.e., 0, 2.5, 5.0, 7.5 and 10.0 ton h $a^{-1}$ and agronomic characters of rice and soil nitrogen were determined. The increasing of barley straw mulch rates. Dominant weed species, chestnut, occurred in large amounts in no mulching or lower mulch rates than in higher mulch rates. The content of N $H_4$$_{+}$-N in soil applied with high barley straw mulch rates was lower during the month after seeding, and then it was higher at heading date, compared with lower mulch rates or no mulch plot. As the barley straw rate increased, maximum tillering stage was delayed, and plant height was reduced. Although the lodging of rice plants was seldom observed in all plots, the breaking strength of the culm was significantly higher in the mulch rate of 10.0 ton h $a^{-1}$ . With an increase of barley straw mulch rate, the effective tillering rate and spikelet number $m^{-2}$ decreased while ripened grain ratio increased. The rice grain yield was slightly decreased with an increase of barley straw mulch rate, although significant differences were not found all barley straw mulch rates. These results suggest that there is no significant yield loss although the total barley straw production, approximately 5.0 ton h $a^{-l}$ in the present study, apply in the paddy for the following rice cultivation by no-tillage direct seeding.ect seeding.

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Studies on the Mulch Paper and Paper Mulch Cultivation of Rice (벼의 종이 멀치재배법 및 멀치용 종이 개발을 위한 연구)

  • 신동소;이변우
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.29 no.1
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    • pp.13-25
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    • 1997
  • To establish the weed control method without herbicide and weeding work, mulch paper was developed from domestic old corrugate container. Basis weight of mulch paper should be above 120 g/$m^2$ to guarantee the mechanical properties. It was concluded that polyamide polyamine epichlorohydrin was desirable to improve the wet strength of mulch paper and the optimum addition level was about 1.5% on the basis of oven dry pulp. The mulch paper was found to be effective in controlling paddy weeds. For the complete weed control the mulch paper should be sustained without decomposition over 45 days. As the paper mulching reduced the soil temperature, the mulch paper was required to improve the penetration of radiant heat.

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Effect of Removing P.E film-Mulch at Budding Stage of Tobacco on the Change of Moisture and Mineral Content in Plow Layer Soil and Nutrient Uptake. (생육중반기 피복제거가 작토층의 수분 및 무기성분 변화와 연초양분흡수에 미치는 영향)

  • 홍순달;이윤환;김재정;육창수
    • Journal of the Korean Society of Tobacco Science
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    • v.8 no.1
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    • pp.69-78
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    • 1986
  • This experiment was carried out to Investigate the environmental changes of rhizosphere, behavior of nutrient components in soul, and nutrients uptake and growth response of the tobacco plant in the condition that mulch as polyethylene film, had been removed on the ridge at the 50th day after transplanting in comparison with continuous mulching condition. The results obtained were as follows; 1. After rainfall, soil moisture content In the plow layer was greatly increased without mulch in comparison with that of the plot with mulch. As a result, leaf water potential of tobacco plant without mulch was higher than that with mulch. 2. Available nutrients such as $NH_4-N, \;NO_3-N$, and total salts in the plow layer of the plot without mulch tended to be Increased, and especially accumulated on the surface layer owing to the redistribution of soil water by rainfall during the latter growth stage after removing mulch. 3. Nutrients uptake by tobacco was much more enhanced in the plot without mulch and resulted in higher contents of total nitrogen, $NO_3-N, \;P_2O_5, \;and K_5O$ in the tobacco leaf Especially higher content of nitrogen caused the delay of maturity resulting In the increased of dry weight of top part of tobacco in the plot without mulch toned to be Increased in comparison with that in mulching condition. Content of total nitrogen, $NO_3-N$, and nicotine in flue-lured leaves was much higher in the plot without. mulch than in mulching condition, but lower content of reducing sugar in the plot without mulch resulted in lower quality of tobacco.

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Effect of Rice-straw and Dead Waterfoxtail Mulch on Growth of Rice and Paddy Weeds in No-tillage Rice Cultivation (벼 무경운재배시 볏짚과 둑새풀 고사체 피복이 벼와 논잡초의 생육에 미치는 영향)

  • Chae, J.C.;Jun, D.K.;Kim, D.W.
    • Korean Journal of Weed Science
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    • v.18 no.3
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    • pp.191-196
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    • 1998
  • This experiment was conducted to investigate the mulch effect of rice straw and dead water foxtail treated with herbicides on weed germination, seedling establishment, and early growth of rice under the no-till culture condition. The percent seedling establishment of rice straw + dead water foxtail mulch was decreased significantly compared to rice straw mulch and non-mulch. Rice straw mulch and rice straw + dead water foxtail mulch inhibited the early growth of no-till direct seeded rice remarkably. However, they promoted rice growth after active tillering stage. Rice straw mulch and rice straw+dead water foxtail mulch in no-till direct seeding decreased weed occurrence significantly. The control value of barnyardgrass, compared with non-mulch, was 96.5% in the rice straw mulch and 75.6% in the rice straw + dead water foxtail mulch, respectively. The pH and concentration of dissolved oxygen in irrigated water were reduced significantly by both rice straw mulch and rice straw+dead water foxtail mulch during early rice growth stage.

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Effect of Biodegradable Mulch Film on Soil Microbial Community

  • Moon, Jin-Young;Song, Jae-Ki;Shin, Jung-Ho;Cho, Yong-Cho;Bae, Jin-Woo;Heo, Jae-Young;Kang, Hang-Won;Lee, Young-Han
    • Korean Journal of Soil Science and Fertilizer
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    • v.49 no.2
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    • pp.125-131
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    • 2016
  • The biodegradable film application can escape from plastic environmental pollution. This experiments studied the effect of biodegradable mulch film on the soil microbial community using fatty acid methyl ester method in soybean production field. The soil $NO_3$-N content in polyethylene mulch film (PE) soil was significantly higher than biodegradable mulch film soil (p < 0.05). The soil microbial community of Gram negative bacteria showed significantly higher in biodegradable mulch film soil than PE mulch film soil (p < 0.05). In addition, biodegradable mulch film soil had significantly low ratio of cy17:0 to $16:1{\omega}7c$ and cy19:0 to $18:1{\omega}7c$ compared with those of PE mulch film soil (p < 0.05), indicating that microbial stress decreased. The ratio of cy17:0 to $16:1{\omega}7c$ and cy19:0 to $18:1{\omega}7c$ should be considered as a potential responsible factor for the obvious differentiation that was observed between the biodegradable mulch film soil and PE mulch film soil in a upland field. The results of this experimentation show the potential of using biodegradable mulch film in place of PE.

Flavor Components of Panax ginseng Cultured with Pine Tree Leaves Mulch (I) (잣나무잎 부초에 의한 인삼 향기성분의 변화(제1보))

  • 김요태;김영희
    • Journal of Ginseng Research
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    • v.15 no.2
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    • pp.120-123
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    • 1991
  • Flavor components of panax ginseng cultured with pine tree leaves mulch instead of traditional rice straw were examined. The growth of two year old ginsengs grown with two different kinds of mulchs no difference, however, the flavor components of ginseng with pine tree leaves mulch 84 constituents detected showed significantly enhanced contents than those of ginseng with rice straw mulch.

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Effect of Ridging System and Mulch Types on Growth, Yield, and Profitability of Potato (Solanum tuberosum L.) in Spring Cropping (감자(Solanum tuberosum L.) 봄재배 시 작휴와 멀칭이 생육, 수량 및 경제성에 미치는 영향)

  • Im, Ju Sung;Cho, Ji Hong;Cho, Kwang Soo;Chang, Dong Chil;Jin, Yong Ik;Yu, Hong Seob;Lee, Jong Nam
    • Korean Journal of Environmental Agriculture
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    • v.35 no.3
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    • pp.202-210
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    • 2016
  • BACKGROUND: This study was conducted to determine effects of ridging systems and plastic film mulch types on growth, yield, and profitability of potato (Solanum tuberosum L.) in spring cropping using paddy field and to suggest profitable ridging system and plastic mulch type.METHODS AND RESULTS: Two potato cultivars ('Goun', and 'Atlantic') were grown at paddy field located in Gangneung in spring. For treatments, ridging systems were one-row ridge (OR) and two-row ridge (TR). Mulch types were no-mulch (NM), black plastic film mulch (BPM), and transparent plastic film mulch (TPM). Emergence of sprout was affected by the mulch types and the fastest level was shown at TPM treatment. Accumulative soil temperature during sprouting was 16.2℃ higher at TR than at OR and also higher at TPM than at BPM or NM. Stem length was not affected by ridging systems or mulch types. Leaf area index (LAI) was influenced by mulch types, while not by ridging systems. The highest LAI was shown at TR with TPM and OR of BPM. There was no significant difference in specific gravity or dry matter rate by ridging systems and mulch types. Tuber yield was significantly influenced by ridging systems and mulch types. Mean tuber weight was heavier at OR treatment than at TR and also the heaviest at TPM among mulch types. The highest marketable yield was found at OR with BPM. Based on marketable tuber yield and market price, the highest income ratio in two cultivars was found at OR with BPM and it was 20~82% higher than the ratio at TR with TPM.CONCLUSION: In spring potato cropping using paddy field, OR with BPM is better for high yield and is more profitable for farmer's income than the conventional cultivation method, TR with TPM.

Temperature and Sweet Corn Production at Different Planting Dates under Polyethylene Tunnel and Mulch (파종기와 Polyethylene 필름 피복방법이 단옥수수 생산에 미치는 영향)

  • 이석순;김태주
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.31 no.1
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    • pp.84-90
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    • 1986
  • An experiment was conducted to know the effects of planting dates (March 5, 15, and 25 and April 4) and transparent polyethylene (P.E.) film treatments(tunnel, tunnel slit, and mulch) on air and soil temperatures and growth and yield of a sweet corn variety, Great Bell. Maximum air and soil temperatures and minimum air and soil temperatures were greater at tunnel>tunnel slit>mulch in that order. Differences in maximum air and soil temperatures among the P.E. film treatments were much greater than those in minimum air and soil temperatures. However, when film was opened due to high air temperature over 40$^{\circ}C$ in the tunnel, air temperature was similar but soil temperature was lower com-pared to mulch. High temperature stress could be avoided in tunnel slit without opening film by increase in the number of slits. Cold damage of corn seedlings was avoided by tunnel and reduced by tunnel slit, and frost-damaged seedlings under the mulch were recovered in few days. The number of days from planting to silking was reduced as planting date delayed. At early plantings, tunnel enhanced early growth and silking, but it delayed at late plantings because tunnel was opened during the most of day time due to high temperature. Black streaked dwarf virus(BSDV) disease was more severe at early plantings and it was reduced in tunnel slit at late plantings because plants were grown under the film at the time of infection. The number of marketable ears was similar among all treatments except mulch at March 5 planting where BSDV was severely infected. Gross income was high in tunnel and tunnel slit at March 25 planting which had more larger marketbale ears and tunnel and tunnel slit at March 5 planting which had higher market price.

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Development of Multi-functional Mulch Papers and Evaluation of Their Performance(Part 3) -Defoaming Treatment during Trial Production of Mulch Papers and Their Influence on Wet End System- (다기능성 멀칭지의 개발 및 적용성 평가(제3보) -시제품 생상시 공정 백수의 거품제거 처리 및 그 영향에 관하여-)

  • 이학래;이진희
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.32 no.3
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    • pp.25-31
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    • 2000
  • It is required to use substantial amount of wet strength resin for producing multi-functional mulch papers since these paper products shold maintain its strength properties when they exposed to outdoor weather for several months. While producing mulch papers it is usual to observe significant amount of foam at white water silo. Thus it is imperative to use defoaming or antifoaming agents. In this study diverse defoaming and antifoaming agents have been tested for their effective-ness in eliminating foams that produced. It was shown that combined use of a silicone type defoamer and a fatty acid type anti-foaming agent was msot effective in eliminating foams. These chemicals were used in trial production of mulch papers and their influence on paper-making wet end system was examined including one pass retention cationic demand con-ductivity pH etc. It was found that the defoaming agents were very effective for removing foams in trial production. Tensile strengths of the mulch papers produced were significantly greater than commericial mulch papers produced in Japan.

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Characteristics of Reflective Light over Red and Black Plastic Mulch, and Effect on the Quality and Yield of the Oriental Melon and Tomato (적색 비닐멀칭과 흑색 비닐멀칭의 반사광 특성과 참외와 토마토의 품질과 수량에 미치는 영향)

  • Hong, Seung-Chang;Heo, Jeong-Wook;Lee, Jeong-Taek;Kang, Kee-Kyung
    • Korean Journal of Environmental Agriculture
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    • v.30 no.4
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    • pp.414-418
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    • 2011
  • BACKGROUND: Plastic mulches widely used in raised-bed culture mainly to conserve water, control weeds and raise soil temperature. The most widely used plastic mulch colour is black. Reflective red and far-red light can affect on growth and yield of various vegetable crops. Objectives of this study were to investigate the characteristics of reflective light of black and red plastic mulches, and to evaluate the reflective red and far-red light on the quality characteristics and yield of the Oriental melon (Cucumis. Melo L.) and tomato (Lycopersicon esculentum L.). METHODS AND RESULTS: Oriental melon and tomato were cultivated over the reflective red and black plastic mulches in plastic house. Reflected red and far-red light over the red plastic mulch were 2.6 times higher than those of black plastic mulch. Red to F-Red ratio of black plastic mulch, red plastic mulch and sunlight were 1.14, 0.93 and 1.16 respectively. Intensity of reflected red and far-red light over red plastic mulch were highest at surface height of 30 cm. The higher the height of the surface decrease the intensity of far-red light. Accordingly, Red to F-Red ratio were increased. Reflective red plastic mulch increased the weight of fruit and content of sugar in Oriental melon and tomato. CONCLUSION(s): Yield of Oriental melon over reflective red plastic mulch was higher than that of black plastic mulch. These results suggested that reflected red and far-red light over the red plastic mulch affected allocation of photosynthate in growing Oriental melon.