Production de composés indoliques rhizogènes par le ver de terre <i>Lumbricus terrestris</i>

Harti, Abdellatif El; Saghi, Mohamed; Molina, J. A. E.; Teller, G.

doi:10.1139/z01-132

Cited by 14 publications

(9 citation statements)

References 29 publications

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“…Mycorrhizal colonization (Cavender et al, 2003), microbial activity (Domínguez, 2004) and suppressiveness of soilborne plant pathogens (Hoitink and Boehm, 1999;Szczech, 1999;Szcech and Smolinska, 2001;Scheuerell et al, 2005;Noble and Coventry, 2005;Termorshuizen et al, 2006) have shown to be enhanced through the addition of compost and vermicompost to a potting media or as a soil amendment. Furthermore, biologically active metabolites such as plant growth regulators (Tomati and Galli, 1995;El Harti et al, 2001) and humates (Atiyeh et al, 2002;Canellas et al, 2002) have been discovered in vermicomposted materials.…”

Section: Discussionmentioning

confidence: 99%

Compost and vermicompost as nursery pot components: effects on tomato plant growth and morphology

Lazcano

Arnold

Tato

et al. 2009

Span. j. agric. res.

153

101

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Post transplant success after nursery stage is strongly influenced by plant morphology. Cultural practices strongly shape plant morphology, and substrate choice is one of the most determining factors. Peat is the most often used amendment in commercial potting substrates, involving the exploitation of non-renewable resources and the degradation of highly valuable peatland ecosystems and therefore alternative substrates are required. Here the feasibility of replacing peat by compost or vermicompost for the production of tomato plants in nurseries was investigated through the study of the effect of increasing proportions of these substrates (0%, 10%, 20%, 50%, 75% and 100%) in target plant growth and morphological features, indicators of adequate post-transplant growth and yield. Compost and vermicompost showed to be adequate substrates for tomato plant growth. Total replacement of peat by vermicompost was possible while doses of compost higher than 50% caused plant mortality. Low doses of compost (10 and 20%) and high doses of vermicompost produced significant increases in aerial and root biomass of the tomato plants. In addition these treatments improved significantly plant morphology (higher number of leaves and leaf area, and increased root volume and branching). The use of compost and vermicompost constitute an attractive alternative to the use of peat in plant nurseries due to the environmental benefits involved but also due to the observed improvement in plant quality.Additional key words: peat moss, plant nursery, soil-less substrate, Solanum lycopersicum L. Resumen Compost y vermicompost como componentes de sustratos artificiales de cultivo en viveros: efectos en el crecimiento y morfología del tomateTanto las prácticas de cultivo en los viveros como la elección del tipo de sustrato tienen una gran influencia sobre la morfología de las plántulas y por lo tanto en su adaptación post transplante. Aunque la turba es uno de los sustratos más utilizados en viveros, su uso conlleva la explotación de un recurso no renovable y la degradación de las turberas, por lo que se hace necesaria la búsqueda de sustratos alternativos que puedan reemplazarla total o parcialmente. En este trabajo se investigó la posibilidad de reemplazar la turba por compost o vermicompost en la producción de plántulas de tomate, mediante el estudio de los efectos de proporciones crecientes de estos sustratos (0%, 10%, 20%, 50%, 75% y 100%) en parámetros morfológicos y de crecimiento claves para la adaptación post transplante. Compost y vermicompost mostraron ser sustratos adecuados para el crecimiento de las plántulas. La sustitución total de la turba sólo fue posible con vermicompost mientras que las dosis de compost mayores que el 50% produjeron la mortalidad de las plántulas. Las dosis bajas de compost (10 y 20%) y altas de vermicompost, produjeron incrementos significativos en la biomasa aérea y radicular de las plantas. Además estas dosis mejoraron de forma significativa su morfología (número de hojas, superficie foliar, volume...

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Section: Discussionmentioning

confidence: 99%

Compost and vermicompost as nursery pot components: effects on tomato plant growth and morphology

Lazcano

Arnold

Tato

et al. 2009

Span. j. agric. res.

153

101

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“…The positive effect of earthworm mucus was ascribed to rhizogenic substances similar to indole acetic acid (El Harti et al, 2001). The predominating negative effect might however have been due to high concentrations of ammonium in earthworm mucus that might induce seed dormancy and/or delay germination (Satchell, 1967).…”

Section: Secretion Of Mucusmentioning

confidence: 99%

Importance of earthworm–seed interactions for the composition and structure of plant communities: A review

et al. 2011

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Soil seed bank composition and dynamics are crucial elements for the understanding of plant population and community ecology. Among animal species earthworms are increasingly recognized as important dispersers and predators of seeds. Through direct and indirect effects, they influence either positively or negatively establishment and survival of seeds and seedlings. Seedling establishment is affected by a variety of earthworm-mediated mechanisms, such as selective ingestion and digestion of seeds, acceleration or deceleration of germination, and downward or upward seed transport. Earthworm casts deposited on the soil surface and the entrance of earthworm burrows often contain viable seeds and constitute important regeneration niches for plant seedlings and therefore likely favour specific plant traits. However, the role of earthworms as seed dispersers, mediators of seed bank dynamics and seed predators has not been considered in concert and therefore the overall effect of earthworms on plant communities remains little understood. Moreover, most knowledge is based on laboratory studies and future work has to explore the significance of earthwormseed interactions under more natural conditions. In this review we summarize the current knowledge on earthwormseed interactions and discuss factors determining theses interactions. We shed light on the consequences of earthworm-mediated impacts on soil seed banks, plant community dynamics and evolution. Special attention is paid to promising future research directions and consequences for restoration and conservation ecology. We conclude that earthwormseed interactions likely represent a crucial multitrophic interaction shaping plant community composition.

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“…The clone T-78 performed best in respect of branches per plant (7.33) as compared to other clones (Choubey et al 2013). Better production of vegetative parts in the present investigation might be due to the presence of various biologically active metabolites such as plant growth regulators (Tomati and Galli 1995;El Harti et al 2001) and humates (Atiyeh et al 2002;Canellas et al 2002;Forde and Lorenzo 2001).…”

Section: Resultsmentioning

confidence: 74%

Effect of Bulky Manures and Fermented Liquid Organics on Growth, Yield, Nutrient Uptake and Economics of French Bean (Phaseolus vulgaris L) Under Rainfed Condition

Ganapathi¹

2020

IJAEB

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Tea is one of the important plantation crops of India as well as West Bengal, contributes considerably in national economy and earns foreign exchange. During 2014-15, total production of tea in India was 1233.14 m kg, out of which only 100 m kg were organic tea. Mainly due to importers demand of organic tea, there is urgent need to enhance organic production of tea crop. Indiscriminate use of inorganic agricultural inputs-fertilizers, weedicides, pesticide and fungicides and lesser use of organic matters deplete soil health, residues remain beyond MRL in processed tea, ultimately reduction in export. Tea Board provides 55% subsidy for organic tea production. For organic cultivation of tea, the planting materials should also be organically produced in nursery, which is very scanty for perennial crops in general and plantation crops in particular. With this background, the present investigation was carried out at instructional farm of the department of Plantation Crops and Processing, UBKV, Pundibari, with the objective to standardize the organic manures and bio-inoculants for production of improved planting materials of tea, The experiment was conducted from 2013 to 2015 and laid out in completely randomized block design. The planting materials of tea chosen to standardize organic manures and bio-inoculants were TS-462 and TV 26. From the study it can be inferred that, the treatment T 6-vermicompost 50 g/sleeve and bio fertilizers mixture 10 g (Azotobacter + Azospirillium + PSB + Trichoderma + VAM @2.0 g each)/sleeve observed to be the best when compared to other treatments and control. Highlights m Present study was thus carried out with the objective to standardize the organic and bio-inoculants for production of improved planting materials of tea

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Production de composés indoliques rhizogènes par le ver de terre Lumbricus terrestris

Cited by 14 publications

References 29 publications

Compost and vermicompost as nursery pot components: effects on tomato plant growth and morphology

Compost and vermicompost as nursery pot components: effects on tomato plant growth and morphology

Importance of earthworm–seed interactions for the composition and structure of plant communities: A review

Effect of Bulky Manures and Fermented Liquid Organics on Growth, Yield, Nutrient Uptake and Economics of French Bean (Phaseolus vulgaris L) Under Rainfed Condition

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