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	Provedor de dados Organic Eprints (2) Autor Thomsen, A. (2) Berntsen, J. (1) Hansen, P.M. (1) Hauggaard-Nielsen, H. (1) Jensen, E.S. (1) Jørgensen, J.R. (1) Olesen, J.E. (1) Petersen, B.M. (1) Mais... Palavra-chave Crop combinations and interactions (1) Crop husbandry (1) Tipo do documento Journal paper (2) Ano 2004 (1) 2002 (1) País Germany (2) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Predicting grain yield and protein content in winter wheat and spring barley using repeated canopy reflectance measurements and partial least squares regression Organic Eprints Hansen, P.M.; Jørgensen, J.R.; Thomsen, A.. By providing both spatial and temporal information remote sensing may function as an important source of data for site-specific crop management. This technology has been used for nitrogen application strategies to obtain optimum yield and grain quality. Here, the objective was to use early repeated remotely sensed multi-spectral data to predict grain yield and quality for winter wheat (Triticum aestivum L.) and spring barley (Hordeum vulgare L.). The crops were sown with two different seeding rates and a wide range of nitrogen strategies were applied. Multi-way partial least squares regression (N-PLS) was used to predict grain yield and protein content. The results were compared with unfold-PLS1 and PLS1 using reflectance data from the last measurement... Tipo: Journal paper Palavras-chave: Crop husbandry. Ano: 2002 URL: http://orgprints.org/426/1/Predicting_grain_yield_and_protein_content_in_winter_wheat_and_spring_barley_using_repeated_canopy_reflectance_measurements_and_partial_least_squares_regression.pdf Modelling dry matter production and resource use in intercrops of pea and barley Organic Eprints Berntsen, J.; Hauggaard-Nielsen, H.; Olesen, J.E.; Petersen, B.M.; Jensen, E.S.; Thomsen, A.. The FASSET whole farm model was extended with a sub-model for competition between several plant species for light, water and nitrogen. The new model was tested on intercrops of pea (Pisum sativum L.) and spring barley (Hordeum vulgare L.). A three-year dataset on pea and barley sole crop growth was used for calibration. Two datasets that included detailed measurements of crop production, nitrogen uptake and leaf area indices from two sites were used for testing. An arable organic experiment from three sites including several treatments over four years was also used for testing. The model predicted the increase in resource utilisation of pea and barley and effects on pea symbiotic nitrogen fixation satisfactorily. The effects of pea interspecific... Tipo: Journal paper Palavras-chave: Crop combinations and interactions. Ano: 2004 URL: http://orgprints.org/4052/1/4052.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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