Weeds of tea plantations

Ohsawa, Masahiko

doi:10.1007/978-94-017-0916-3_37

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…Tea plantations in terms of mosses, liverworts and lichens have never been studied in detail, in addition, these organisms have never been the main subject of analysis [54][55][56][57] . During the research, 39 taxa of cryptogams were recorded; this result is a fairly similar to the Gradstein et al 57 research and much higher than the research conducted by Tan et al 56 .…”

Section: Discussionmentioning

confidence: 99%

Tea plantations and their importance as host plants and hot spots for epiphytic cryptogams

Wolski

Piwowarczyk

Plášek

et al. 2021

Sci Rep

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Bryophytes and lichens are outstanding bioindicators, not only of the plant community in which they develop, but also the substrates on which they grow. Some epiphytic cryptogams, particularly the rare ones, are stenotopic and require a long habitat continuity, for example substrates such as old trees. It could also be a tea plantation, this is because the shrubs are not felled, and most of them may have several dozen years. In addition, the shrubs are not subject to sudden changes in microclimatic conditions as only the young leaves are harvested. As the importance of tea plantations as host plants for mosses and lichens has not yet been studied, the present study examines the species diversity of cryptogams of two tea plantations in Georgia (Caucasus). The study also examines the phytogeography, spatial pattern, environmental conditions and ecological indicators of the cryptogams. Thirty-nine cryptogam taxa were identified; typical forest taxa dominated, even in the absence of typical forest communities. Some of these species are obligatory epiphytes, rare or even critically endangered in most European countries (e.g., Orthotrichum stellatum, O. stramineum, Lewinskya striata). The fairly abundant record of such species on tea plantations indicates the importance of these phytocoenoses for the preservation of rare species, and indicates that these habitats are hot spots for these cryptogams in otherwise changed envirnonment. Additionally, as indicated the analysis of the species composition of individual plantations and the mathematical analysis made on this basis, plantations differ from each other. Another interesting result is also the spatial distributions of cryptogams on tea bushes resemble those of forest communities and lichens seems to be more sensitive than bryophytes to antropogenic changes of environment.

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Section: Discussionmentioning

confidence: 99%

Tea plantations and their importance as host plants and hot spots for epiphytic cryptogams

Wolski

Piwowarczyk

Plášek

et al. 2021

Sci Rep

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“…Sin embargo, los mismos autores no han podido explicar si estos efectos se deben al oxalato o a otro componente presente en especies del género Oxalis. Por otro lado, O. latifolia se suele usar como cubierta vegetal para evitar la erosión y el establecimiento de malas hierbas en cultivos de té en Sri Lanka (Ohsawa, 1982). Sería muy interesante continuar esta línea de investigación para buscar una utilidad a O. latifolia, tanto si se pudiera usar en algunos cultivos como cubierta vegetal, como si se recolectara con el fi n de obtener sustancias alelopáticas de sus diferentes órganos.…”

Section: Posibles Aplicaciones Alelopáticas De Oxalis Latifoliaunclassified

“…No obstante, presenta una distribución mundial, a excepción de climas boreales y polares. Como mala hierba, forma parte de comunidades arvenses en numerosos cultivos y en algunos pastos, entre ellos algodón (Wilkins y Kabanyoro, 1997), arroz , cacahuete (Adalla, 1976), cebada, (Morgado-Arroyo y Urzua-Soria, 1995), cebolla (Ved-Prakash et al, 2000;Wilson, 1973), cultivos de semillas oleaginosas (Saraswat y Rabha, 1993), gladiolo (Nirmala et al, 1991), guisante (Wilson, 1989), judía (Jakelaitis et al, 2003), maíz (Jakelaitis et al, 2003;Rahman et al, 2002;Urzua-Soria et al, 2002;Maina et al, 2001;Villarías, 2000;Fraga et al, 1993;Thomas, 1991;Ochoa y Zaragoza, 1982;Wetala, 1979a;Kahurananga et al, 1973;Atwal y Gopal, 1972), manzano (Ram y Tewari, 1979;Tewari y Ram, 1976), mijo africano (Singh y Arya, 1999), nabo (Chivingue y Rukuni, 1989), pasto bahía (Maciel et al, 2008), patata (Nimje, 1991), rosa (Rajamani et al, 1992), soja (Arya y Singh, 1998;Arya, 1991;Wetala, 1976), té (Ohsawa, 1982;Ramachandran, 1978), tomate (Nascente et al, 2004), trigo Urzua-Soria et al, 2002; Morgado-Arroyo y Urzua-Soria, 1995) y vid (Prathibha et al, 1995a, b).…”

Section: Introductionunclassified

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Control de Oxalis latifolia: Revisión y propuestas para su mejoramiento

Royo‐Esnal

López²

2008

Cienc. Inv. Agr.

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A. Royo-Esnal, and M.L. López. 2008. Control of Oxalis latifolia: a review and proposals for its improvement. Cien. Inv. Agr. 35(2):121-136.Oxalis latifolia is a weed with a tropical, temperate and mediterranean distribution. It invades orchards, plant nurseries, gardens and corn fi elds. Although some mechanical and cultural methods and some herbicides may achieve excellent controls over this weed, their application is usually diffi cult and expensive. However, some specifi c characteristics in its annual life cycle make O. latifolia quite vulnerable. That is why the combinations of adequate control methods, such as ploughs, delay of sowing and mulches together with residual or foliar herbicides, are necessary to seek for each crop and climate, always taking in care the weed's biological particularities. Finally, new research lines that are less known in order to make the most of O. latifolia, such as its allelopathic characteristics or its use as a cover plant, are pointed out.

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“…Little or no attention has been devoted to weed flora and vegetation in North Korea, although a number of dangerous weeds occur in the regionthese are mainly weeds of paddy fields (KASAHARA 1982). Weed research has, however, a long tradition in neighbouring Japan where the occurrence and spreading of weeds were studied in various vegetation types and in various environments ( MIYAWAKI et al 1972MIYAWAKI et al , 1973MIYAWAKI & FUJIWARA 1974;OKUDA 1975;OKUTOMI 1979;KASAHARA 1982;NEMOTO 1982;OHSAWA 1982;IIZUMI 1983). The results of these studies are often applicable also to the vegetation of the Korean Peninsula ( PARK 1962, 1963, 1965, see SUGANUMA 1966 because the weed flora is very similar in both areas.…”

Section: Introductionmentioning

confidence: 99%

Species structure of artificial grasslands with Zoysia japonica STEUD in Pyongyang, North Korea

Šrůtek

Kolbek

1992

Feddes Repertorium

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In Far East (mainly in Japan), considerable attention has been devoted to weeds of many types of seminatural and artificial vegetation. It allows us to compare the weed flora of artifical grasslands (seeded and planted) dominated by Zoysia japonica in Pyongyang (the capital of North Korea) with other similar communities. Some of the dominant or common species of the artificial monocoenoses with Z. japonica (Tables 1a, 1b, 2; Fig. 4) may be considered dangerous for field crops and seeded meadows. There are, especially, Kummerowia striata and Viola mandshurica. Of the rare species there are Oxalis corniculata, Equisetum arvense and Setaria viridis. Many weed species of the studied artificial grasslands also occur in intensive pastures with Zoysia japonica in Japan (Table 3). This similarity of both vegetation types is ascribed to a similar way of disturbance of vegetation and soil surface (grazing and trampling by livestock on the one hand and cutting and weeding on the other) and by the occurrence of the same dominant. Artificial grasslands in Pyongyang were classified as Zoysia japonica community. Four groups of phytosociological relevés were distinguished by using the ordination technique DCA and its comparison with BRAUN‐BLANQUET (Tables 1a, 1b, 2; Fig. 3).

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Weeds of tea plantations

Cited by 6 publications

References 7 publications

Tea plantations and their importance as host plants and hot spots for epiphytic cryptogams

Tea plantations and their importance as host plants and hot spots for epiphytic cryptogams

Control de Oxalis latifolia: Revisión y propuestas para su mejoramiento

Species structure of artificial grasslands with Zoysia japonica STEUD in Pyongyang, North Korea

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