Bulk density and relationship air/water of horticultural substrate

Fernandes, Carolina; Corá, José Eduardo

doi:10.1590/s0103-90162004000400015

Cited by 28 publications

(9 citation statements)

References 7 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Consequently, there is a reduction on the size of porous created by them. Fernandes et al (2004), suggested that in vegetables cropping the substrates with total porosity higher than 85% of the volume provides a good performance for yield production in pots. Available water (AW) and readily available water (RAW) were lower in the new substrate.…”

Section: Physical Analysis Of Substratementioning

confidence: 99%

“…The decrease of porosity and the increase of density in the reused substrates tend to higher water retention (Fernandes, 2006). A good substrate shall have, among other characteristics, 10 to 30% of aeration space and a readily available water range from 20 to 30% (Fernandes et al, 2004, Fernandes et al, 2007. Fernandes (2007) evaluated the reuse of seven substrates (blend of sand base materials, peanut shell and sugarcane bagasse), in cherry tomato (Sindy) crop and verified alteration of physical properties only in the treatment that simultaneously utilized the combination of some of them.…”

Section: Physical Analysis Of Substratementioning

confidence: 99%

See 1 more Smart Citation

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

Marín¹,

Melo²,

Gomes³

et al. 2017

Aust J Crop Sci

Self Cite

View full text Add to dashboard Cite

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%).

show abstract

Section: Physical Analysis Of Substratementioning

confidence: 99%

Section: Physical Analysis Of Substratementioning

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…All the assayed substrates can be considered light as their Db lay within the AR (< 400 kg m -3 ) and all complied with the recommended minimum porosity of 85 %, with the exception of BCH-FW-50 % which, nonetheless, was close to this limit. The water contents and particularly the air contents of growth media are of paramount importance to containerized plant production (Fernandes and Corá, 2004). In our case, HYD-FW is a material which strongly limits aeration of the substrate (8 % Vair in the pure material; data not shown).…”

Section: Discussionmentioning

confidence: 74%

Biochar versus hydrochar as growth media constituents for ornamental plant cultivation

Fornés

Belda

2018

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Biochar and hydrochar have been proposed as novel materials for providing soilless growth media. However, much more knowledge is required before reliable advice can be given on the use of these materials for this purpose. Depending on the material and the technology applied (pyrolysis or hydrothermal carbonization), phytotoxicity and greenhouse gas emissions have been found for certain chars. In this study, our aim was to assess the feasibility of three chars as substrate constituents. We compared two biochars, one from forest waste and the other from olive mill waste, and a hydrochar from forest waste. We studied how chars affected substrate characteristics, plant performance, water economy and respiratory CO 2 emission. Substrates containing biochar from forest waste showed the best characteristics, with good air/water relationships and adequate electrical conductivity. Those with biochar from olive mill waste were highly saline and, consequently, low quality. The substrates with hydrochar retained too much water and were poorly aerated, presenting high CO 2 concentrations due to high respiratory activity. Plants performed well only when grown in substrates containing a maximum of 25 % biochar from forest waste or hydrochar. After analyzing the char characteristics, we concluded that biochar from forest waste could be safely used as a substrate constituent and is environmentally friendly when applied due to its low salinity and low CO 2 emission. However, biochar from olive mill waste and hydrochar need to be improved before they can be used as substrate constituents.

show abstract

“…Adequate measurements of apparent density are essential to calculate and understand other important substrate attributes for plant growth as total porosity, aeration space and available water (FERNANDES and CORÁ, 2004).…”

Section: Introductionmentioning

confidence: 99%

Acclimatization and growth of ornamental pineapple seedlings under organic substrates

Colombo¹,

Favetta²,

Cruz³

et al. 2017

View full text Add to dashboard Cite

The in vitro propagation techniques are commonly used to produce ornamental pineapple seedlings in commercial scale, aiming to attend the growers with genetic and sanitary quality seedlings. However, the choice of the ideal substrate is essential for the acclimatization and growth stage of the seedlings propagated by this technique, since some substrates can increase the seedling mortality and/or limit the seedling growth due to its physical and chemical characteristics. Thus, the aim of this study was to evaluate the acclimatization of ornamental pineapple [Ananas comosus (L.) Merr. var. ananassoides (Baker) Coppens & Leal] on different substrates. Seedlings with approximately seven centimeters, obtained from in vitro culture, were transplanted into styrofoam trays filled with the following substrates: sphagnum; semi-composed pine bark; carbonized rice husk; sphagnum + semicomposed pine bark; sphagnum + carbonized rice husk; and semi-composed pine bark + carbonized rice husk. Each treatment was replicated five times using 10 plants. At 180 days, there were evaluated the following variables: survival percentage, plant height, number of leaves, leaf area, largest root length, and shoot and root dry matter. The substrate semi-composed pine bark + carbonized rice husk presented the lowest mean (62%) for survival percentage. The semi-composed pine bark and semi-composed pine bark + carbonized rice husk treatments presented significant increments in some evaluated biometric characteristics. The semi-composed pine bark is the most favorable substrate for the A. comosus var. ananassoids acclimatization. Keywords: Ananas comosus var. ananassoides, Bromeliaceae, propagation, potting media. RESUMO Aclimatização e crescimento de mudas de abacaxi ornamental em substratos orgânicosTécnicas de propagação in vitro são utilizadas visando produzir mudas de abacaxi ornamental em escala comercial, a fim de atender os produtores com mudas de qualidade genética e sanitária. Porém, a escolha do substrato ideal é essencial na etapa de aclimatização e crescimento das mudas propagadas in vitro, visto que alguns substratos podem proporcionar a mortalidade das plântulas ou limitar o crescimento das mudas, devido às suas características físicas e químicas. Assim, objetivou-se avaliar a aclimatização do abacaxi ornamental [Ananas comosus (L.) Merr. var. ananassoides (Baker) Coppens & Leal] em diferentes substratos. Plântulas com aproximadamente 7 cm, oriundas de cultivo in vitro, foram transplantadas em bandejas de isopor contendo os seguintes substratos: esfagno, casca de pinus semi-compostada, casca de arroz carbonizada, esfagno + casca de pinus semi-compostada, esfagno + casca de arroz carbonizada e casca de pinus semi-compostada + casca de arroz carbonizada. Cada tratamento foi constituído de cinco repetições contendo dez plantas cada. Aos 180 dias avaliou-se as variáveis: porcentagem de sobrevivência, altura da planta, número de folhas, área foliar, comprimento da maior raiz, e massa seca da parte aérea e raízes. O substrato ca...

show abstract

Bulk density and relationship air/water of horticultural substrate

Cited by 28 publications

References 7 publications

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

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

Biochar versus hydrochar as growth media constituents for ornamental plant cultivation

Acclimatization and growth of ornamental pineapple seedlings under organic substrates

Contact Info

Product

Resources

About