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| Jones, H; Clarke, S M; Haigh, Z; Hinchsliffe, K; Wolfe, M S; Thomas, J; Gibbon, D; Harris, F; Lyon, F. |
| The performance of UK winter wheat varieties was tested under organic conditions involving farmer participation. Three breadmaking varieties (Hereward, Solstice and Xi19) and their mixture (1:1:1) were grown at 19 UK farms in 2003/04 and 2004/05. The variability of productivity on organic farms was illustrated with more variation among farm sites than among varieties. Seed health was generally high over all sites. Although the trials were successful, more time was needed at project initiation to improve farmer involvement. Some farmers expected more researcher visits, and were reticent about assessing the trials themselves. In contrast, some participants valued the variety performance data on their farms particularly when related to that of other growers.... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Systems research and participatory research. |
| Ano: 2006 |
URL: http://orgprints.org/10207/1/Developing_a_particpatory_approach_to_seed_production_and_varietal_selection.pdf |
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| Haigh, Z E L; Clarke, S; Hinchsliffe, K; Jones, H; Wolfe, M S. |
| The aim of the project is to use an ecological approach to analyse the interactions of a range of key agronomic variables in organic wheat production (wheat genotype, spatial arrangement of seed, seed density and wheat/white clover bi-cropping) to determine an optimal approach to improved and stabilised production. The fi rst set of data revealed that seedling competition was infl uenced by seed rate and drilling arrangement. Furthermore, the variety Hereward had increased emergence and establishment to Aristos. An interaction exists between wheat variety, seed rate and drilling arrangement on the level of canopy cover at different developmental stages – these factors are important for the suppression of weeds. The input of farmers in the selection of... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/10204/1/Sustainable_production_of_organic_wheat.pdf |
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| Wolfe, M S; Hinchsliffe, K E; Clarke, S M; Jones, H; Haigh, Z. |
| Genetically diverse Composite Cross Populations (CCPs) may be useful in environmentally variable low-input systems as an alternative to pure line varieties. They are formed by hybridising lines with diverse evolutionary origins, bulking the F1 progeny, and allowing natural selection of the progeny in successive crop environments. CCPs derived from 10 high yielding parents (YCCPs), 12 high quality parents (QCCPs), or all 22 parents (YQCCPs), were grown at four sites (2 organic, 2 conventional) in the UK; they are currently (2006) in F5. The YCCPs out yielded the QCCPs, which had better quality characteristics. Although the CCPs performed within the range of the parents, the values obtained were often better than the mean of the parents. Some population... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Cereals; Pulses and oilseeds Breeding; Genetics and propagation. |
| Ano: 2006 |
URL: http://orgprints.org/10177/1/Evolutionary_breeding_of_healthy_wheat_%2D_from_plot_to_farm.pdf |
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| Jones, H; Boyd, H. E.; Clarke, S; Haigh, Z. E. L; Wolfe, M. |
| Twenty winter wheat varieties used as parents in a half diallel crossing programme for the production of wheat populations were grown in field trials at two organic and two non-organic sites over three years in England. Yields of the varieties between the two non-organic sites were highly correlated, but less so between the two organic sites and between the non-organic and organic sites. At the non-organic sites, most of the variation in yield (60%) was due to varietal differences, whereas, at the organic sites, it was due largely to the effects of environment (79%), and genotypic variation only accounted for 9%. More detailed analysis, using AMMI (Additive Main effects and Multiplicative Interaction), allowed stricter comparisons among individual... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Crop combinations and interactions Breeding; Genetics and propagation. |
| Ano: 2008 |
URL: http://orgprints.org/13205/1/Jones_13205_ed.doc |
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