35 documents found, page 1 of 4
Effects of adding walnut shell to coir-based substrates on yield and quality of...
Machado, R.M.A; Alves-Pereira, Isabel; Grilo, Ana; Ferreira, RuiEnhancing the sustainability of growing media is an important objective in soilless vegetable cultivation. Here, we evaluated the potential of pine bark to replace perlite in coir-based substrates for lettuce (Lactuca sativa L. cv. ‘Godzilla’) cultivation. The experiment followed a factorial design with two coir-based substrate blends—one amended with perlite and the other with pine bark—and two nutrient soluti...
Reusing Coir-Based Substrates for Lettuce Growth: Nutrient Content and Phytonut...
Machado, Rui M.A.; Alves-Pereira, Isabel; Alves, Inês; Ferreira, Rui M. A.; Gruda, Nazim S.This research aimed to assess the influence of reusing coir-based substrates on growth, nutrient content, and phytonutrients accumulation in lettuce. The experiment included a new coir pith and four coir-based mixes (1) coir, biochar, and perlite; (2) coir, compost, and perlite; (3) coir, biochar, and pine bark; and (4) coir, compost, and pine bark. All mixes had been previously utilized to grow transplanted sp...
Coir-Based Growing Media with Municipal Compost and Biochar and Their Impacts o...
Martins, T.C.; Machado, R.M.A.; Alves-Pereira, Isabel; Ferreira, R.; Gruda, N.S.The purpose of this study was to develop substrates with little or no peat by combining coir-based growing media with municipal compost and/or acacia biochar, two locally produced renewable resources, and to assess their effects on lettuce seedling emergence and growth, as well as their content in photosynthetic pigments and total phenols. Two experiments were carried out, the first with six mixes using compost...
Effect of reusing coir-based substrates with municipal compost and biochar on g...
Machado, Rui M.A.; Alves-Pereira, Isabel; Alves, Inês; Ferreira, RuiThe aim of this research was to evaluate the influence of reusing, coir-based substrates with municipal organic compost or biochar on growth and phytochemical accumulation in lettuce. The experiment included five substrates: coir (new) and four mixtures: coir: biochar: perlite, coir: compost: perlite, coir: biochar: pine bark, and coir: compost: pine bark. All of the mixtures had already been used to grow trans...
Influence of Nitrogen Sources Applied by Fertigation to an Enriched Soil with O...
Machado, R M A; Alves-Pereira, Isabel; Faty, Y; Perdigão, S; Ferreira, Rui ManuelAbstract: The aim of the present study was to evaluate the effects of nitrogen source applied by fertiga tion to an enriched soil with organic compost on plant growth, mineral nutrition, and phytochemical contents in two successive harvests in coriander. The treatments were as follows: unfertilized soil, soil enriched with organic compost, and soil enriched with organic compost to which 60 kg N ha−1 as ammonium...
) Fresh yield and phytochemical accumulation on spinach grown in different coir...
Machado, R. M. A.; Alves-Pereira, Isabel; Ferreira, Rui M AThe objective of this study was to evaluate if coir can replace peat as growing media in spinach production in phytonutrient content and antioxidant activity terms. The effects of four commercial substrates peat; and three coir types: cocopeat, coir-crush chips, and coir medium, on growth, chlorophyll a and chlorophyll b, total:carotenoids, flavonoids, anthocyanins, proline, glutathione content, and glutathione...
Spinach production in cocopeat: effects of soil block number and the number of ...
Machado, Rui M A; Alves-Pereira, Isabel; Ferreira, Rui M ACurrently, the interest in using cocopeat or coir dust alone as a growing medium to produce leafy vegetables has increased. This research aimed to evaluate the effects of soil block number and of the number of emitters per styrofoam box on plant growth, nitrate (NO3-) concentration, and antioxidant activity in spinach (Spinacia oleracea L. 'Manatee') cultivated in cocopeat. The experiment was carried out with f...
Effects of coir type on growth, phytochemical accumulation and antioxidant acti...
Machado, Rui. M. A.; Alves-Pereira, Isabel; Ferreira, Rui M. A.The effects of four commercial substrates peat; and three coir types (Cocopeat, coir-crush chips and coir-medium) on plant growth, leaf nutrient concentration, total phenols, ascorbic acid, antioxidant activity (FRAP and DPPH) and peroxidase activity were evaluated in spinach (Spinacia oleracea L. ‘Manatee’). Soil blocked spinach seedlings (five seedlings per block) were transplanted (on 16 February 2017) into ...
Effects of Municipal Solid Waste Compost Supplemented with Inorganic Nitrogen o...
Machado, Rui. M. A.; Alves-Pereira, Isabel; Robalo, Miguel; Ferreira, Rui M. A.In this study, we evaluated the effects of municipal solid waste compost supplemented with inorganic N on the physicochemical properties of soil, plant growth, nitrate concentration, and antioxidant activity in spinach. Experiments were carried out in neutral and acidic soils that were low in organic matter. A fertilized soil was used as a control, while four compost treatments—two compost rates of 35 and 70 t ...
An Alternative to Peat—Effects on Plant Growth, Phytochemical Accumulation, and...
Machado, Rui. M.A.; Alves-Pereira, Isabel; Ferreira, Rui; Gruda, N.S.In this study, we evaluated the effects of municipal solid waste compost supplemented with inorganic N on the physicochemical properties of soil, plant growth, nitrate concentration, and antioxidant activity in spinach. Experiments were carried out in neutral and acidic soils that were low in organic matter. A fertilized soil was used as a control, while four compost treatments—two compost rates of 35 and 70 t ...