Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/19652

Title: Effects of substrate type on plant growth and nitrogen and nitrate concentration in spinach
Authors: Barcelos, Carina
Machado, Rui
Ferreira, Isabel Alves
Ferreia, Rui
Bryla, David
Keywords: Spinacia oleracea;
chlorophyll meter;
Espinafre
cultura sem solo
nitrate
nitrato
Issue Date: 24-Nov-2016
Publisher: International Journal of Plant Biology
Abstract: Abstract The effects of three commercial substrates (a mixture of forest residues, composted grape husks, and white peat, black peat and coir) on plant growth and nitrogen (N) and nitrate (NO3) concentration and content were evaluated in spinach (Spinacia oleracea L. cv. Tapir). Spinach seedlings were transplanted at 45 days after emergence into Styrofoam boxes filled with the substrates and were grown during winter and early spring in an unheated greenhouse with no supplemental lighting. Each planting box was irrigated daily by drip and fertilized with a complete nutrient solution. The NO3 content of the drainage water was lower in coir than in the other substrates. However, shoot NO3 concentration was not affected by substrate type, while yield and total shoot N and NO3 content were greater when plants were grown in peat than in the mixed substrate or the coir. Leaf chlorophyll meter readings provided a good indication of the amount of N in the plants and increased linearly with total shoot N. Keywords Spinacia oleracea; chlorophyll meter; coir; peat; soilless culture systems
URI: http://www.pagepress.org/journals/index.php/pb/article/view/6325
http://hdl.handle.net/10174/19652
Type: article
Appears in Collections:FIT - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
ICAAM - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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