Výsledky vyhledávání - "C. J. T. Spitters"

An eco-physiological model for interspecific competition, applied to the influence of Chenopodium album L. on sugar beet. II. Model evaluation

Autor: B.J. Schnieders, W. de Groot, W. Joenje, Martin J. Kropff, C. J. T. Spitters

Publikováno v: Weed Research. 32:451-463

Summary: Resume: Zusammenfassung A simulation model for crop-weed competition, parameterized for sugar beet and Chenopodium album L., was validated with experimental data from five field experiments. Between the experiments, 98% of the variation in y

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f5f5db83675d8d9e983603ecbd93b45
https://doi.org/10.1111/j.1365-3180.1992.tb01906.x

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An eco-physiological model for interspecific competition, applied to the influence of Chenopodium album L. on sugar beet. I. Model description and parameterization

Autor: C. J. T. Spitters, Martin J. Kropff

Publikováno v: Weed Research. 32:437-450

Summary: Resume: Zusammenfassung An eco-physiological simulation model is presented in which competition between crop and weeds is simulated. The procedure is based upon the underlying physiological processes of distribution of the resources light an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21ccc1518c448b651f0db40d827ad765
https://doi.org/10.1111/j.1365-3180.1992.tb01905.x

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A simple model of crop loss by weed competition from early observations on relative leaf area of the weeds

Autor: C. J. T. Spitters, M. J. Kropff

Publikováno v: Weed Research 31 (1991) 2
Weed Research, 31(2), 97-105

Summary: A new simple empirical model for early prediction of crop losses by weed competition was introduced. This model relates yield loss to relative leaf area of the weeds shortly after crop emergence using the relative damage coefficient q as the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c1854ef19545abc890a8fd167698d76
https://doi.org/10.1111/j.1365-3180.1991.tb01748.x

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A weather-based yield-forcasting model for sugar beet

Autor: C. J. T. Spitters, B. Kiewiet, T. Schiphouwer

Publikováno v: Netherlands Journal of Agricultural Science 38 (1990) 4
Netherlands Journal of Agricultural Science, 38(4), 731-735

A simple model to predict seasonal growth in sugarbeet yield is presented. Time from sowing to the 'growth point date' (the date on which a plant contained 4 g sugar) is characterized by a temp. sum. The increase in sugar yield after this date is cal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43ad1f97fb6e46d4233e8b82fc1205d6
https://doi.org/10.18174/njas.v38i4.16562

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Genetic variation in partial resistance to leaf rust in winter wheat: disease progress, foliage senescence and yield reduction

Autor: H. G. M. G. van Nassau, H. J. W. van Roermund, C. J. T. Spitters, J. Schepers, J. Mesdag

Publikováno v: Netherlands Journal of Plant Pathology 96 (1990)
Netherlands Journal of Plant Pathology, 96, 3-15

Relations between leaf rust progress, foliage senescence and yield reduction were studied for seven winter wheat genotypes, differing in their partial resistance to leaf rust. Leaf rust accelerated leaf and ear senescence. Photosynthesis measurements

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cc7468a621b6f9b0b5ac79951c49b10
https://doi.org/10.1007/bf01976602

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Comparison of nitrogen utilization of diploid and tetraploid perennial ryegrass genotypes using a hydroponic system

Autor: A. H. C. M. Schapendonk, C. J. T. Spitters, A. L. F. De Vos

Publikováno v: Genetic Aspects of Plant Mineral Nutrition ISBN: 9789401074216

In the present study, genetic variation in growth rate of perennial ryegrass (Lolium perenne L.) was evaluated on a nutrient flow system (hydroponics) with computer controlled supply of nitrogen. The control algorithms were based on a simulation mode

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07054df31d6acf7d1e66e050af3f7cb7
https://doi.org/10.1007/978-94-009-2053-8_46

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Simulation of yield reduction by leaf rust in winter wheat, applied to the analysis of genetic variation in partial resistance

Autor: C. J. T. Spitters, H. J. W. van Roermund

Publikováno v: Netherlands Journal of Plant Pathology 96 (1990)
Netherlands Journal of Plant Pathology, 96, 17-28

Differences in yield reduction among seven winter wheat genotypes due to leaf rust, as observed in a field experiment, were analysed using a simulation model. In this model, the effects of the disease on crop growth and yield were described on the ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c48642e6e6f2b3179051f7f1daee813b
https://research.wur.nl/en/publications/simulation-of-yield-reduction-by-leaf-rust-in-winter-wheat-applie

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Investigations of the inheritance of flower variegation in Mirabilis jalapa L. 6. genetic system of flower variegation and speculation about its existence

Autor: M. M. Engels, L. Vosselman, W. N. M. Van Kester, A. C. Zeven, C. J. T. Spitters

Publikováno v: Euphytica. 24:323-332

A genetic model for flower variegation in Mirabilis jalapa is given. Two loci effecting pigment production are assumed. The dominant alleles of each of these two loci may be repressed and thus they do not express themselves. In the presence of a domi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f707b3c821613e79cf3e82c98505e4b
https://doi.org/10.1007/bf00028197

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