Analysis of growing media by means of a 1: 1½ volume extract

Sonneveld, C.; Ende, Jenneke van den; Dijk, P.A. van

doi:10.1080/00103627409366497

Cited by 92 publications

(38 citation statements)

References 7 publications

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“…O material, que consiste na mistura de esterco eqüino com serragem, foi retirado das baias dos cavalos e encontrava-se já curtido. Com a análise do esterco, realizada pelo Instituto Agronômico de Campinas (IAC) de acordo com a metodologia de Sonneveld (1974), obteve-se a umidade do material (60,8%) e a análise química (Tabela 1). A quantidade de esterco eqüino utilizado na mistura do substrato foi de 30% do volume, o que corresponde a 300 litros de esterco por m³ de substrato.…”

Section: Methodsunclassified

PÓ DE BASALTO E ESTERCO EQÜINO NA PRODUÇÃO DE MUDAS DE Prunus sellowii KOEHNE (ROSACEAE)

Knapik¹,

Ângelo²

2007

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Resumo O atual sistema de produção de mudas em tubetes implica a necessidade de adubações freqüentes, em razão da menor quantidade de substrato utilizado. Buscando alternativas ao processo de adubação convencional, tendo em vista potenciais riscos ao meio ambiente, foram estudados o pó de basalto e o esterco eqüino como fontes de nutrientes. Dessa maneira, este trabalho teve como objetivo avaliar o crescimento de mudas de Prunus sellowii Koehne (pessegueiro-bravo) submetidas às seguintes adubações: sem adubação, adubação convencional, pó de basalto e esterco eqüino. Essas adubações foram misturadas em substrato comercial à base de casca de Pinus sp e vermiculita. O experimento foi instalado em junho de 2004 no viveiro da Embrapa Florestas, Colombo (PR). Foi utilizado o delineamento em blocos ao acaso, com seis repetições e nove plantas por parcela, com análise das seguintes características: altura, diâmetro de colo, biomassa seca (aérea e radicial) e concentração de nutrientes foliares. Os resultados indicaram que: a) não foi constatada diferença significativa entre os tratamentos aplicados e a testemunha; b) mudas produzidas no substrato com pó de basalto acumularam mais Ca, Mg, B, Cu e Fe nas folhas. Palavras-chave: Pessegueiro-bravo; mudas; adubações; nutrientes. AbstractBasalt dust and equine dung in the study of seedlings production of Prunus sellowii Koehne. The current system of seedling production in tubes implies in frequent fertilization due to the lower amount of substratum. In order to find an alternative of this process, and consider potential risks to the environment, it was used basalt dust and horse dung as sources of nutrients. In this context, this paper aims to evaluate the development of Prunus sellowii Koehne seedling, with four different kinds of fertilizations: without fertilization, conventional fertilization, horse dung and basalt dust, each one mixed in commercial substratum compound Pinus sp rind and vermiculite. The experiment was installed in June of 2004, in Embrapa Florestas nursery, Colombo (PR). The experiment was carried on a randomized block design, with six repetitions each one with nine plants. Were evaluated the following characteristics: height, diameter, dry biomass (aerial and root) and leaves nutrients composition. The results showed that: a) significant difference between the applied treatments and the witness was not evidenced; b) seedlings produced with basalt dust accumulated more Ca, Mg, B, Cu and Fe in leaves.

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Section: Methodsunclassified

PÓ DE BASALTO E ESTERCO EQÜINO NA PRODUÇÃO DE MUDAS DE Prunus sellowii KOEHNE (ROSACEAE)

Knapik¹,

Ângelo²

2007

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“…The entire substrate from each pot was homogenized on a clean surface, where 2 L per samples were collected to send to the IAC (Agronomic Institute of Campinas) Laboratory for substrate analysis. The values for pH, electric conductivity, soluble content of NH 4 + , N-NO 3 -, P, K, S, Ca, Mg, B, Cu, Fe, Mn, Zn and ration C/N were obtained according to the Dutch method proposed by Sonneveld et al (1974) (extraction ration 1:1.5). The physical properties evaluated were: density (D), aeration space (AS), porosity (P), available water (AW) and readily available water (RAW), according the proposed by De Boodt & Verdonck (1972), utilizing volumetric rings of PVC 285 cm 3 (7.2 cm diameter and 7.0 cm height).…”

Section: Harvest and Ratingsmentioning

confidence: 99%

Reuse of substrate and nutritive solution concentration on the cultivation of salad tomato

Marín¹,

Melo²,

Gomes³

et al. 2017

Aust J Crop Sci

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Among the most modern techniques of vegetables production cultivation in substrate is highlighted. In this method the substrate and the nutritive solution are main components that deliver nutrients to the crop and directly influence the performance of the plants. The objective of this study was to evaluate the reuse of substrate with several concentration of the nutritive solution in cultivation of tomato plants of the salad group 'Paronset'. The experimental design was a randomized blocks in a factorial scheme 3x5, with four replicates. The plants were grown in coconut husk fiber, in three substrate reuse levels (new substrate, reused once and reused twice) and five concentrations of the nutritive solution recommended for the culture [25%; 50%; 100% (original solution); 150% and 200%]. The chemical and physical characterization of the substrate after cultivation was done such as fruit productivity and quality and nutritional status of the plants. Physical characteristics were only influenced when substrate was reutilized. Chemical characteristics of the substrate were influenced by both the reuse of the substrate and the concentration of the nutritive solution. It was observed that the nutritional status of the plants was influenced only by the concentration of the nutritive solution. It was also noted that the productivity and fruit mass decreased after the second reuse of the substrate. The use of the original solution (100%) allowed the highest productivity; however, the largest fruit mass was obtained with the most dilute solution (25%).

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“…Chemical analyses were performed on substrates prior to planting using a 1:1.5 substrate/water saturated soil water extract (Sonneveld et al 1974). A 100-mL cylindrical container was filled with 33 mL of substrate, which was then compacted with a 50-g mass.…”

Section: Physical Properties and Chemical Analyses Prior To Pottingmentioning

confidence: 99%

Identifying appropriate methodology to diagnose aeration limitations with large peat and bark particles in growing media

Caron¹,

Morel²,

Rivière³

et al. 2010

Can. J. Soil. Sci.

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Caron, J., Morel, P., Rivie`re, L.-M. and Guillemain, G. 2010. Identifying appropriate methodology to diagnose aeration limitations with large peat and bark particles in growing media. Can. J. Soil Sci. 90: 481Á494. Large-sized particles (coarse peat, bark or sawdust) are often added to growing media to improve substrate aeration properties (gas storage and exchange). Recent studies have shown that large fragments mixed with fines may create barriers that restrict gas diffusion or create competition for oxygen even if they improve air storage. An experiment was carried out to compare the growth performances of growing media containing large fragments and to assess their aeration status using different methods. Different mixes were made of a fine sphagnum peat (average size 2.4 mm) and a coarse (1Á2, 2Á4, 4Á6, 6Á10, and 10Á20 mm particles) sphagnum peat or bark (2Á4 and 10Á20 mm). These substrates had different aeration properties and were used to grow Poinsettia and Impatiens 'New Guinea' in a greenhouse, resulting in differences in plant growth. The results show that air-filled porosity remained relatively unaffected by fragment size. Gas relative diffusivity differed significantly between treatments and was highest in the mix with the 2Á4 mm particles and diminished rapidly as fragment size increased from 4 to 20 mm or decreased to 1Á2 mm. Diffusivity was clearly lower in the bark/peat mixes but showed the same trend with coarse fragments. Root and shoot growth parameters were significantly and positively correlated to gas relative diffusivity. Moreover, the growth reduction observed in the bark/peat mixes relative to pure peat was most likely linked to limited gas exchange. Air-filled porosity assessments performed in situ (in the pot itself) or prior to potting, in cylinders, gave inconsistent results or were not significantly correlated to plant growth, indicating that aeration limitations are better diagnosed with gas diffusivity in growing media.Key words: Air-filled porosity, gas relative diffusivity, gas diffusion, peat substrates, bark, Euphorbia pulcherima, Impatiens ()novae-guinea)Caron, J., Morel, P., Rivie`re, L.-M. et Guillemain, G. 2010. Identifying appropriate methodology to diagnose aeration limitations with large peat and bark particles in growing media. Can. J. Soil Sci. 90: 481Á494. Des fragments de fortes tailles (tourbe, e´corce ou sciure brute) sont souvent ajoute´s aux substrats de culture de serres ou de pe´pinie`res pour ame´liorer leurs proprie´te´s d'ae´ration (stockage et e´change de gaz). Les e´tudes re´centes ont prouve´que les larges fragments me´lange´s aux fins peuvent cre´er des barrie`res qui limitent la diffusion de gaz ou cre´ent une compe´tition pour l'oxyge`ne meˆme s'ils ame´liorent le stockage d'air. Deux expe´riences ont e´te´effectue´es pour comparer les performances en serre de diffe´rents milieux de culture contenant des fragments larges et pour e´valuer leur statut d'ae´ration selon diffe´rentes me´thodes. Ces substrats ont e´te´faits d'un me´lange d'un volume de t...

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Analysis of growing media by means of a 1: 1½ volume extract

Cited by 92 publications

References 7 publications

PÓ DE BASALTO E ESTERCO EQÜINO NA PRODUÇÃO DE MUDAS DE Prunus sellowii KOEHNE (ROSACEAE)

PÓ DE BASALTO E ESTERCO EQÜINO NA PRODUÇÃO DE MUDAS DE Prunus sellowii KOEHNE (ROSACEAE)

Reuse of substrate and nutritive solution concentration on the cultivation of salad tomato

Identifying appropriate methodology to diagnose aeration limitations with large peat and bark particles in growing media

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