Influence of organic amendments on soil quality potential indicators in an urban horticultural system

González, Mirta G.; Gómez, Emma Laura Alfaro; Comese, Romina; Quesada, Mariano; Conti, M. E.

doi:10.1016/j.biortech.2010.06.095

Cited by 83 publications

(53 citation statements)

References 18 publications

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“…The final products of these processes, composts and vermicomposts, can be used as sources of organic matter for soil amendment, sources of nutrients for soil fertilizer, or growing media constituents for soilless cultivation (González et al, 2010). Vermicompost tea (VCT), a waterbased vermicompost extract containing high levels of beneficial microbes and soluble nutrients (Edwards et al, 2010), has attracted the attention of growers and researchers in recent years.…”

Section: Introductionmentioning

confidence: 99%

Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato

Márquez-Quiroz

López-Espinosa

Chávez

et al. 2014

J. Soil Sci. Plant Nutr.

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In conventional agriculture, heavy doses of chemical fertilizers and pesticides are often used to improve the yield of various horticultural crops. These chemical fertilizers and pesticides cause health problems among consumers. Due to the adverse effects of chemical fertilizers, there is interest in the use of organic fertilizers. It has long been recognized that the rate-limiting step for nitrogen assimilation, the reduction of NO 3 -to NO 2 -catalyzed by nitrate reductase (NR), is highly regulated. An increase in the amount and activity of NR leads to a corresponding increase in the potential for nitrate reduction and confers a greater capacity for general amino-acid synthesis, protein synthesis or total nitrogen assimilation. The aim of the current experiment was to determine the effect of organic and conventional fertilizers on yield and nitrate reductase activity in saladette tomato.Tomato plants were grown under controlled greenhouse conditions and treated with either organic or conventional fertilizer. We evaluated five treatments: F1, sand + inorganic fertilizer; F2, sand + vermicompost tea; F3, a 1:1 mixture of sand: compost + vermicompost tea; F4, a 1:1 mixture of sand: vermicompost + vermicompost tea; and F5, a 2:1:1 mixture of sand: compost: vermicompost + vermicompost tea. The evaluated variables were yield, fruit size, number of fruits, fruit quality, chlorophyll content, and in vivo nitrate reductase enzyme activity. Fertilizer type strongly influenced the yield, fruit size, and fruit quality. The best organic fertilizer for tomatoes was sand + vermicompost tea. Tomatoes in this treatment group produced the second highest yield, the best NO 3 -assimilation, the greatest nitrate reductase enzyme activity, and the second highest organic foliar nitrogen content.

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Section: Introductionmentioning

confidence: 99%

Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato

Márquez-Quiroz

López-Espinosa

Chávez

et al. 2014

J. Soil Sci. Plant Nutr.

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“…Vermicompost is especially interesting as an organic fertilizer because of its high contents of plant available nutrients (N, P, K) [20,21,34]. The formation of vermicompost, which involves the activity of epigeic earthworms in controlled environments, appears to be a useful indirect avenue for improving physico-chemical properties of soils [21,29]. Several studies also pointed out the specific structure and higher activity of bacterial communities in vermicompost [2,51,56,63,64,65].…”

Section: Introductionmentioning

confidence: 99%

The earthworm species Metaphire posthuma modulates the effect of organic amendments (compost vs. vermicompost from buffalo manure) on soil microbial properties. A laboratory experiment

Doan

Jusselme

Lata

et al. 2013

European Journal of Soil Biology

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“…Composting and vermicomposting, two well-known processes for solid organic waste reclamation, are good alternatives to burning or damping organic wastes. The final products, composts and vermicomposts, can be used as sources of organic matter for soil amendment, of nutrients for soil fertilization or as growing media constituents for soilless cultivation (González et al, 2010). In fact, in recent years vegetable crop residues have been successfully recycled through composting for horticultural purposes (Kulcu & Yaldiz, 2004;Mazuela et al, 2005;Carrión et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Compost versus vermicompost as substrate constituents for rooting shrub cuttings

Fornés

Mendoza‐Hernández

Belda

2013

Span. j. agric. res.

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The feasibility of composted (C), composted plus vermicomposted (V1) and straight vermicomposted (V2) tomato crop waste as component of rooting media for Euonymus japonicus ‘Microphylla’ and Lavandula angustifolia vegetative propagation was studied. Mixes of C, V1 and V2 with coir fibre (CF) at the proportions 100:0, 75:25, 50:50, 25:75, 0:100 (v:v) were assayed. Physical, physico chemical and nutritional characteristics of all materials and mixes were determined and correlated with cutting rooting and growth performances. The compost and the two vermicomposts were markedly different from CF. They had higher bulk density and lower total porosity than CF. Compost had lower water holding capacity and shrinkage in response to drying than vermicomposts and CF. Compost and vermicomposts were alkaline materials whilst CF was almost neutral. Electrical conductivity (EC) was low in CF and vermicomposts, and high in compost due to the high mineral contents, mainly of K+, SO42– and Na+ in this material. EC and the ions contributing to it (K+, SO42–, Na+) showed highly significative inverse correlations with rooting percentage for the two species and with root and shoot growth but only for E. japonicus. Due to its high EC, compost C (average rooting = 22.5%) performed worse than vermicomposts V1 (av. rooting = 97%) and V2 (av. rooting = 98%) whilst the latter performed similarly to CF control (av. rooting = 100%). Thus vermicomposts appeared to be more appropriate than compost as rooting media constituent.

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Influence of organic amendments on soil quality potential indicators in an urban horticultural system

Cited by 83 publications

References 18 publications

Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato

Effect of vermicompost tea on yield and nitrate reductase enzyme activity in saladette tomato

The earthworm species Metaphire posthuma modulates the effect of organic amendments (compost vs. vermicompost from buffalo manure) on soil microbial properties. A laboratory experiment

Compost versus vermicompost as substrate constituents for rooting shrub cuttings

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