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Capacity of Deep Rooted Species to Take Up Water and Nutrients from Deep Soil Layers Organic Eprints
Dresbøll, Dorte Bodin; Rasmussen, Camilla Ruø; Thorup-Kristensen, Kristensen.
Introduction Agricultural cropping systems generally have a limited use of water and nutrients from the soil below 1m depth. However, several plant species have much deeper root systems, and if included in cropping systems, these would allow for exploitation of otherwise unused resources from deep soil layers. In a unique facility consisting of 12, 4m high ‘root towers’ we examined the root development and root activity in different soil layers of different biannual/perennial plant species. Methods Four plant species lucerne (Medicago sativa), rosinweed (Silphium integrifolium), intermediate wheatgrass (Thinopyrum intermedium), and dyers voad (Isatis tinctoria) were grown in soil in large rhizotrons (root towers) (4m×1.2m×0.6 m). Root growth was...
Tipo: Conference paper, poster, etc. Palavras-chave: Pasture and forage crops Cereals; Pulses and oilseeds Crop health; Quality; Protection.
Ano: 2018 URL: http://orgprints.org/34364/3/Poster%20-%20Dorte%20Bodin%20Dresb%C3%B8ll_34364.pdf
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Chicory Grows Roots Below 3 m Is That Beneficial under Water Stress? Organic Eprints
Rasmussen, Camilla Ruø; Dresbøll, Dorte Bodin; Thorup-Kristensen, Kristian.
Introduction Water scarcity is a major limitation to crop production worldwide. Deep-rooted crops can potentially allow exploitation of water that more shallow rooted crops cannot access. Several agricultural crops grow roots of several meters depth within a growing season, and thereby get access to water originating from wet season surplus precipitation stored in the soil. The aim of this study was to test the hypotheses 1) that chicory roots can grow below 3 m within a growing season and 2) that chicory shifts its water uptake downwards when the top soil dries out. Materials and Methods Chicory (Cichorium intybus L. cv Chicoree Zoom F1) was grown in 4 m tall rhizotrons in monoculture under dry or wet conditions and intercropped with either ryegrass...
Tipo: Conference paper, poster, etc. Palavras-chave: Production systems Crop health; Quality; Protection Irrigation and drainage.
Ano: 2018 URL: http://orgprints.org/34370/3/Poster%20-%20Camilla_34370.pdf
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