Professor Paul Hadley
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+44 (0) 118 378 8074
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Professor
Areas of interest
- Environmental regulation of growth, development & yield of crop plants.
- Research on the effects of temperature & light on the growth & development of field grown & protected horticultural crops.
- Development of quantitative models to predict flowering of crop plants in relation to temperature & light. Prediction of maturity & yield of field & protected crops in relation to climate.
- Collaborative research on crop growth & development in relation to global climate change.
- Research on cocoa (Theobroma cacao) with research links in Malaysia, Brazil & Trinidad. Provision of cocoa germplasm for improvement programmes, worldwide.
- Development of the international cocoa germplasm database.
- Collaborative research on the growth of crops in response to greenhouse energy saving techniques.
- Collaborative research on the development of novel cladding materials for greenhouses with the departments of Chemistry & Engineering.
Teaching
- Horticultural crop physiology
- Vegetable production
- Controlled environment technology
- Protected vegetable production
- Tropical horticulture
- Environmental physiology of cocoa
- Organic & sustainable horticulture
Research centres and groups
- Horticulture Research International
- Cocoa Research Unit, University of West Indies, Trinidad
- Malaysian Cocoa Board
Research projects
Current Research Projects:
- Cocoa quarantine project
- Investigating the use of modified atmosphere packaging to extend flower vase life
- International Cocoa Germplasm Database
- Efficient use of lighting in bedding plant production
- Multiplication and distribution of cocoa germplasm
- Information exchange
Selected publications
Pre 2003
Cryer, N.C., Kolesnikova-Allen, M., Zhang, D., Athanson, B., Opoku, S., Aikpokpodion, P., Efombagn, B.M., Adu-Ampomah, Y., Nelson, S., Gilmour, M., Hadley, P., Wilkinson, M.J. and Lockwood, R. Verification of identity of breeding material in South East Asia and West Africa. In: Proceedings of the Malaysian International Cocoa Conference, 18-19 July, 2005.
Fletcher, J.M., Tatsiopoulou, A., Davis, F.J., Henbest, R.G.C. and Hadley, P. Growth, yield and development of strawberry cv 'Elsanta' under novel photoselective film clad greenhouses. Acta Horticulturae, Proceedings of the XXVIth International Congress and Exhibition, Ontario, Canada (in press), 2003.
Bisgrove, R.J. and Hadley, P. Gardening in the Global Greenhouse: The Impacts of Climate Change on Gardens in the UK. Technical Report. UKCIP, Oxford, 2002, 140 pp.
Daymond, A.J., Hadley, P., Machado, R.C.R. and Ng, E. Genetic variability in partitioning to the yield component of cacao (Theobroma cacao L.). HortScience, 37, 2002, 799-801.
Daymond, A.J., Hadley, P., Machado, R.C.R. and Ng, E. Canopy characteristics of contrasting clones of cacao (Theobroma cacao). Experimental Agriculture, 38, 2002, 359-367.
de Camacaro, M.E.P, Camacaro, G.J., Hadley, P., Battey, N.H. and Carew, J.G. Pattern of growth and development of the strawberry cultivars Elsanta, Bolero, and Everest. Journal of the American Society for Horticultural Science, 127 (6), 2002, 901-907.
Adams, S.R., Pearson, S. and Hadley, P. Improving quantitative flowering models through a better understanding of the phases of photoperiod sensitivity. J. Exp. Bot., 52, (357), 2001, 655-662.
Carew, J.G., Mahmood, K., Darby, J., Hadley, P. and Battey, N.H. The effects of low temperatures on the vegetative growth and flowering of the primocane fruiting raspberry 'Autumn Bliss'. J. Hort. Sci. Biotechnol., 76, 2001, 264-270.
Batts, G. R., Ellis, R. H., Morison, J. I. L. & Hadley, P. Canopy development and tillering of field-grown crops of two contrasting cultivars of winter wheat (Triticum aestivum) in response to CO2 and temperature. Annals of Applied Biology, 133, 2000, 101-109.
Mahmood, K., Carew, J. G., Hadley, P. & Battey, N. H. The effect of chilling and post-chilling temperatures on growth and flowering of sweet cherry (Prunus anium L.). Journal of Horticultural Science & Biotechnology, 75, 2000, 598-601.
Adams, S. R., Hadley, P. & Pearson, S. The Effects of Temperature, Photoperiod, and Photosynthetic Photon Flux on the Time to Flowering of Petunia 'Express Blush Pink'. Journal of the American Society for Horticultural Science, 123, 1998, 577-580.
Adams, S. R., Pearson, S. & Hadley, P. An appraisal of the use of reciprocal transfer experiments: assessing the stages of photoperiod sensitivity in chrysanthemum cv. Snowdon (Chrysanthemum morifolium Ramat.). Journal of Experimental Botany, 49, 1998, 1405-1411.
Le Miere, P., Hadley, P., Darby, J. & Battey, N.H. The effect of thermal environment, planting date and crown size on growth, development and yield of Fragaria x ananassa Duch. cv. Elsanta. Journal of Horticultural Science & Technology, 73, 1998, 786-795
van Haeringen, C. J., West, J. S., Davis, F. J., Gilbert, A., Hadley, P., Pearson, S., Wheldon, A. E. & Henbest, R. G. C. The Growth of Solid Spectral Filters for the Regulation of Plant Growth. Photochemistry and Photobiology, 67, 1998, 407-413.
Publications
- End, M. , Daymond, A. , Hadley, P. , eds. (2021) Technical guidelines for the safe movement of cacao germplasm. Revised from the FAO/IPGRI Technical guidelines No. 20 (Fourth Update 2021).. Bioversity International , Rome (Italy). pp 127. ISBN: 9789292552275
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Ullah, I.
,
Daymond, A.
,
Hadley, P.
,
End, M.
,
Umaharan, P.
,
Dunwell, J.
ORCID: 0000-0003-2147-665X
(2021)
Identification of Cacao Mild Mosaic Virus (CaMMV) and Cacao
Yellow Vein-Banding Virus (CYVBV) in Cocoa
(Theobroma cacao) Germplasm.
Viruses
, 13
(11).
ISSN:
1999-4915
|
doi:
https://dx.doi.org/10.3390/v13112152
- Lahive, F. , Handley, L. , Hadley, P. , Daymond, A. (2021) Climate change impacts on cacao: genotypic variation in responses of mature cacao to elevated CO2 and water deficit. Agronomy , 11 (5). ISSN: 2073-4395 | doi: https://dx.doi.org/10.3390/agronomy11050818
- Mohan, S. , Davis, F. , Badiee, A. , Hadley, P. , Twitchen, C. , Pearson, S. , Gargan, K. (2021) Optical and thermal properties of commercial polymer film, modelling the albedo effect. Journal of Applied Polymer Science , 138 (24). ISSN: 0021-8995 | doi: https://dx.doi.org/10.1002/app.50581
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Black, E.
,
Pinnington, E.
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Wainwright, C.
ORCID: 0000-0002-7311-7846
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Lahive, F.
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Quaife, T.
ORCID: 0000-0001-6896-4613
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Allan, R.
ORCID: 0000-0003-0264-9447
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Cook, P.
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Daymond, A.
,
Hadley, P.
,
McGuire, P.
,
Verhoef, A.
,
Vidale, P.
(2021)
Cocoa plant productivity in West Africa under climate change: a modelling and experimental study.
Environmental Research Letters
, 16
(1).
ISSN:
1748-9326
|
doi:
https://dx.doi.org/10.1088/1748-9326/abc3f3
- Daymond, A. , Prawoto, A. , Abdoellah, S. , Soetanto, A. , Susilo, A. , Cryer, N. , Lahive, F. , Hadley, P. (2020) Variation in Indonesian cocoa farm productivity in relation to management, environmental and edaphic factors. Experimental Agriculture , 56 (5). pp. 738-751. ISSN: 0014-4797 | doi: https://dx.doi.org/10.1017/S0014479720000289
- Awudzi, G. , Hadley, P. , Hatcher, P. , Daymond, A. (2020) Mirid feeding preference as influenced by light and temperature mediated changes in plant nutrient concentration in cocoa. Annals of Applied Biology , 177 (3). pp. 395-403. ISSN: 0003-4746 | doi: https://dx.doi.org/10.1111/aab.12636
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Thomsit-Ireland, F.
,
Essah, E.
ORCID: 0000-0002-1349-5167
,
Hadley, P.
,
BlanuĊĦa, T.
(2020)
The impact of green facades and vegetative cover on the temperature and relative humidity within model buildings.
Building and Environment
, 181
ISSN:
0360-1323
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doi:
https://dx.doi.org/10.1016/j.buildenv.2020.107009
- Acheampong, K. , Daymond, A. , Adu-Yeboah, P. , Hadley, P. (2019) Improving field establishment of cacao (Theobroma cacao) through mulching, irrigation and shading. Experimental Agriculture , 55 (6). pp. 898-912. ISSN: 0014-4797 | doi: https://dx.doi.org/10.1017/S0014479718000479
- Lahive, F. , Hadley, P. , Daymond, A. (2019) The physiological responses of cacao to the environment and the implications for climate change resilience. A review. Agronomy for Sustainable Development , 39 (1). ISSN: 1774-0746 | doi: https://dx.doi.org/10.1007/s13593-018-0552-0
- Kemp, S. , Hadley, P. , Blanusa, T. (2019) The influence of plant type on green roof rainfall retention. Urban Ecosystems , 22 pp. 355-366. ISSN: 1083-8155 | doi: https://dx.doi.org/10.1007/s11252-018-0822-2
- Lu, F. , Rodriguez Garcia, J. , Van Damme, I. , Westwood, N. , Shaw, L. , Robinson, J. , Warren, G. , Chatzifragkou, A. , McQueen Mason, S. , Gomez, L. , Faas, L. , Balcombe, K. , Srinivasan, C. , Picchioni, F. , Hadley, P. , Charalampopoulos, D. (2018) Valorisation strategies for cocoa pod husk and its fractions. Current Opinion in Green and Sustainable Chemistry , 14 pp. 80-88. ISSN: 2452-2236 | doi: https://dx.doi.org/10.1016/j.cogsc.2018.07.007
- Lahive, F. , Hadley, P. , Daymond, A. (2018) The impact of elevated CO2 and water deficit stress on growth and photosynthesis of juvenile cacao (Theobroma cacao L.).. Photosynthetica , 56 (3). pp. 911-920. ISSN: 1573-9058 | doi: https://dx.doi.org/10.1007/s11099-017-0743-y
- End, M. , Daymond, A. , Hadley, P. , eds. (2017) Technical guidelines for the safe movement of cacao germplasm. Bioversity International pp 89. ISBN: 9789292550790
- Kemp, S. , Blanusa, T. , Hadley, P. (2017) Greywater impact on green roofsâ provision of ecosystem services. Acta Horticulturae , 1189 (103). pp. 513-518. ISSN: 0567-7572 | doi: https://dx.doi.org/10.17660/ActaHortic.2017.1189.103
- Martinez-Luscher, J. , Hadley, P. , Ordidge, M. , Xu, X. , Luedeling, E. (2017) Delayed chilling appears to counteract flowering advances of apricot in southern UK. Agricultural and Forest Meteorology , 237-238 pp. 209-218. ISSN: 0168-1923 | doi: https://dx.doi.org/10.1016/j.agrformet.2017.02.017
- Vaz Monteiro, M. , Blanusa, T. , Verhoef, A. , Richardson, M. , Hadley, P. , Cameron, R. (2017) Functional green roofs: importance of plant choice in maximising summertime environmental cooling and substrate insulation potential. Energy and Buildings , 141 pp. 56-68. ISSN: 0378-7788 | doi: https://dx.doi.org/10.1016/j.enbuild.2017.02.011
- Awudzi, G. , Cudjoe, A. , Hadley, P. , Hatcher, P. , Daymond, A. (2017) Optimising mirid control on cocoa farms through complementary monitoring systems. Journal of Applied Entomology , 141 (4). pp. 247-255. ISSN: 1439-0418 | doi: https://dx.doi.org/10.1111/jen.12332
- Casebow, R. , Hadley, P. , Uppal, R. , Addisu, M. , Loddo, S. , Kowalski, A. , Griffiths, S. , Gooding, M. , eds. (2016) Reduced height (Rht) alleles affect wheat grain quality. In: Zhang, A. , (eds.) PLOS ONE , 11 (5). ISSN: 1932-6203 | doi: https://dx.doi.org/10.1371/journal.pone.0156056
- Thomsit-Ireland, F. , Blanusa, T. , Essah, E. , Hadley, P. (2016) Controlling ivy attachment to wall surfaces by applying paints, metal meshes and sheets. Journal of Living Architecture , 3 (1). pp. 1-14.
- Vaz Monteiro, M. , Blanusa, T. , Verhoef, A. , Hadley, P. , Cameron, R. (2016) Relative importance of transpiration rate and leaf morphological traits for the regulation of leaf temperature. Australian Journal of Botany , 64 (1). pp. 32-44. ISSN: 0067-1924 | doi: https://dx.doi.org/10.1071/BT15198
- Awudzi, G. , Asamoah, M. , Owusu-Ansah, F. , Hadley, P. , Hatcher, P. , Daymond, A. (2016) Knowledge and perception of Ghanaian cocoa farmers on mirid control and their willingness to use forecasting systems. International Journal of Tropical Insect Science , 36 (1). pp. 22-31. ISSN: 1742-7584 | doi: https://dx.doi.org/10.1017/S1742758415000247
- Acheampong, K. , Hadley, P. , Daymond, A. , Adu-Yeboah, P. (2015) The influence of shade and organic fertilizer treatments on the physiology and establishment of Theobroma cacao clones. American Journal of Experimental Agriculture , 6 (6). pp. 347-360. ISSN: 2231-0606 | doi: https://dx.doi.org/10.9734/AJEA/2015/15206
- Tricker, P. , Rodríguez López, C. , Gibbings, G. , Hadley, P. , Wilkinson, M. (2013) Transgenerational, dynamic methylation of stomata genes in response to low relative humidity. International Journal of Molecular Sciences , 14 (4). pp. 6674-6689. ISSN: 1422-0067 | doi: https://dx.doi.org/10.3390/ijms14046674
- Mahendra, V. , Davis, F. , Hadley, P. , Gilbert, A. (2013) The design of UV absorbing systems for horticultural applications. ISRN Materials Science , 2013 ISSN: 2090-6099 | doi: https://dx.doi.org/10.1155/2013/604132
- Acheampong, K. , Hadley, P. , Daymond, A. (2013) Photosynthetic activity and early growth of four Cacao genotypes as influenced by different shade regimes under West African dry and wet season conditions. Experimental Agriculture , 49 (1). pp. 31-42. ISSN: 0014-4797 | doi: https://dx.doi.org/10.1017/S0014479712001007
- Tricker, P. , Gibbings, J. , López, C. , Hadley, P. , Wilkinson, M. (2012) Low relative humidity triggers RNA-directed de novo DNA methylation and suppression of genes controlling stomatal development. Journal of Experimental Botany , 63 (10). pp. 3799-3813. ISSN: 0022-0957 | doi: https://dx.doi.org/10.1093/jxb/ers076
- Ordidge, M. , Garcia-Macias, P. , Battey, N. , Gordon, M. , John, P. , Lovegrove, J. , Vysini, E. , Wagstaffe, A. , Hadley, P. (2012) Development of colour and firmness in strawberry crops is UV light sensitive, but colour is not a good predictor of several quality parameters. Journal of the Science of Food and Agriculture , 92 (8). pp. 1597-1604. ISSN: 0022-5142 | doi: https://dx.doi.org/10.1002/jsfa.4744
- Daymond, A. and Hadley, P. (2011) Analysis of physiological data from the International Clonal Trial (CFC). In: Eskes, B. , (eds.) Collaborative and Participatory Approaches to Cocoa Improvement. Common Fund for Commodities pp. 142-150. ISBN: 9789290438847
- Tsormpatsidis, E. , Ordidge, M. , Henbest, R. , Wagstaffe, A. , Battey, N. , Hadley, P. (2011) Harvesting fruit of equivalent chronological age and fruit position shows individual effects of UV radiation on aspects of the strawberry ripening process. Environmental and Experimental Botany , 74 pp. 178-185. ISSN: 0098-8472 | doi: https://dx.doi.org/10.1016/j.envexpbot.2011.05.017
- van Emden, H. and Hadley, P. (2011) Plastic films for polytunnels can prolong the effective residual life of cypermethrin to over 6 months. Journal of Horticultural Science & Biotechnology , 86 (2). pp. 196-200. ISSN: 1462-0316 | doi: https://dx.doi.org/10.1080/14620316.2011.11512747
- Daymond, A. , Tricker, P. , Hadley, P. (2011) Genotypic variation in photosynthesis in cacao is correlated with stomatal conductance and leaf nitrogen. Biologia Plantarum , 55 (1). pp. 99-104. ISSN: 0006-3134
- Daymond, A. , Tricker, P. , Hadley, P. (2010) Genotypic variation in photosynthetic and leaf traits in cocoa.
- Turnbull, C. , Daymond, A. , Lake, H. , Main, B. , Radha, K. , Cryer, N. , End, M. , Hadley, P. (2010) The role of the international cocoa germplasm database and the international cocoa quarantine centre in information management and distribution of cocoa genetic resources.
- Wade, A. , Asase, A. , Hadley, P. , Mason, J. , Ofori-Frimpong, K. , Preece, D. , Spring, N. , Norris, K. (2010) Management strategies for maximizing carbon storage and tree species diversity in cocoa-growing landscapes. Agriculture Ecosystems & Environment , 138 (3-4). pp. 324-334. ISSN: 0167-8809 | doi: https://dx.doi.org/10.1016/j.agee.2010.06.007
- Tsormpatsidis, E. , Henbest, R. , Battey, N. , Hadley, P. (2010) The influence of ultraviolet radiation on growth, photosynthesis and phenolic levels of green and red lettuce: potential for exploiting effects of ultraviolet radiation in a production system. Annals of Applied Biology , 157 (3). pp. 357-366. ISSN: 0003-4746 | doi: https://dx.doi.org/10.1111/j.1744-7348.2010.00393.x
- Staley, J. , Stewart-Jones, A. , Pope, T. , Wright, D. , Leather, S. , Hadley, P. , Rossiter, J. , van Emden, H. , Poppy, G. (2010) Varying responses of insect herbivores to altered plant chemistry under organic and conventional treatments. Proceedings of the Royal Society B-Biological Sciences , 277 (1682). pp. 779-786. ISSN: 1471-2954 | doi: https://dx.doi.org/10.1098/rspb.2009.1631
- Ordidge, M. , García-Macías, P. , Battey, N. , Gordon, M. , Hadley, P. , John, P. , Lovegrove, J. , Vysini, E. , Wagstaffe, A. (2010) Phenolic contents of lettuce, strawberry, raspberry, and blueberry crops cultivated under plastic films varying in ultraviolet transparency. Food Chemistry , 119 (3). pp. 1224-1227. ISSN: 0308-8146 | doi: https://dx.doi.org/10.1016/j.foodchem.2009.08.039
- Harwood, . and Hadley, . (2009) HDC poinsettia tracker: flexible graphical tracking software. Computers and Electronics in Agriculture , 66 (2). pp. 215-217. ISSN: 0168-1699 | doi: https://dx.doi.org/10.1016/j.compag.2009.01.009
- Tsormpatsidis, . , Henbest, . , Davis, F. , Battey, . , Hadley, . , Wagstaffe, . (2008) UV irradiance as a major influence on growth, development and secondary products of commercial importance in Lollo Rosso lettuce 'Revolution' grown under polyethylene films. Environmental and Experimental Botany , 63 (1-3). pp. 232-239. ISSN: 0098-8472 | doi: https://dx.doi.org/10.1016/j.envexpbot.2007.12.002
- Daymond, . and Hadley, . (2008) Differential effects of temperature on fruit development and bean quality of contrasting genotypes of cacao (Theobroma cacao). Annals of Applied Biology , 153 (2). pp. 175-185. ISSN: 0003-4746 | doi: https://dx.doi.org/10.1111/j.1744-7348.2008.00246.x
- Garcia-Macias, . , Ordidge, . , Vysini, . , Waroonphan, . , Battey, . , Gordon, . , Hadley, . , John, . , Lovegrove, . , Wagstaffe, . (2007) Changes in the flavonoid and phenolic acid contents and antioxidant activity of red leaf lettuce (Lollo Rosso) due to cultivation under plastic films varying in ultraviolet transparency. Journal of Agricultural and Food Chemistry , 55 (25). pp. 10168-10172. ISSN: 0021-8561 | doi: https://dx.doi.org/10.1021/jf071570m
- Garcia Macias, P. , Ordidge, M. , Vysini, E. , Waroonphan, S. , Battey, N. , Gordon, M. , Hadley, P. , John, P. , Lovegrove, J. , Wagstaffe, A. (2007) Changes in the flavonoid and phenolic acid contents and antioxidant activity of red leaf lettuce (Lollo Rosso) due to cultivation under plastic films varying in ultraviolet transparency. Journal of Agricultural and Food Chemistry , 55 (25). pp. 10168-10172. ISSN: 0021-8561 | doi: https://dx.doi.org/10.1021/jf071570m
- Chunnasit, . and Hadley, . (2006) Determination of the optical properties of plastic films used as cladding materials in novel energy efficient greenhouses. In: Kamaruddin, . , Rukunuddin, . , Hamad, . , (eds.) Proceedings of the International Symposium on Greenhouses, Environmental Controls and In-House Mechanization for Crop Production in the Tropics and Sub-Tropics - CONTROLLED ENVIRONMENT PRODUCTION SYSTEM FOR SUSTAINABLE AGRICULTURAL PRODUCTION. Acta Horticulturae International Society Horticultural Science , Leuven 1. pp. 471-478. ISBN: 0567-7572 90-6605-519-7
- Fletcher, . , Tatsiopoulou, . , Mpezamihigo, . , Carew, . , Henbest, . , Hadley, . (2005) Far-red light filtering by plastic film, greenhouse-cladding materials: effects on growth and flowering in Petunia and Impatiens. Journal of Horticultural Science & Biotechnology , 80 (3). pp. 303-306. ISSN: 1462-0316
- Fletcher, J. , Tatsiopoulou, A. , Hadley, P. , Davis, F. , Henbest, R. (2004) Growth, yield and development of strawberry cv. 'Elsanta' under novel photoselective film clad greenhouses. In: Papadopoulos, . , (eds.) Protected cultivation 2002: in search of structures, systems and plant materials for sustainable greenhouse production . Acta Horticulturae , 633. International Society for Horticultural Science , Leuven. pp. 99-106. ISBN: 9789066056275 | doi: https://dx.doi.org/10.17660/ActaHortic.2004.633.11
- Wheeler, . , Daymond, . , Morison, . , Ellis, . , Hadley, . (2004) Acclimation of photosynthesis to elevated CO2 in onion (allium cepa) grown at a range of temperatures. Annals of Applied Biology , 144 (1). pp. 103-111. ISSN: 0003-4746 | doi: https://dx.doi.org/10.1111/j.1744-7348.2004.tb00322.x
- Wadsworth, . , Ford, . , Turnbull, . , Hadley, . (2004) ICGD 2003: International Cocoa Germplasm Database Version 5.2. CD-ROM. Euronext.liffe University of Reading
- Turnbull, . , Butler, . , Cryer, . , Zhang, . , Lanaud, . , Daymond, . , Ford, . , Wilkinson, . , Hadley, . (2004) Tackling mislabelling in cocoa germplasm collections. Ingenic Newsletter , 9 pp. 8-11.
- Tabatabaie, . , Gregory, . , Hadley, . (2004) Uneven distribution of nutrients in the root zone affects the incidence of blossom end rot and concentration of calcium and potassium in fruits of tomato. Plant and Soil , 258 (1-2). pp. 169-178. ISSN: 0032-079X
- Tabatabaei, . , Gregory, . , Hadley, . (2004) Distribution of nutrients in the root zone affects yield, quality and blossom end rot of tomato fruits. J Hortic Sci Biotech , 79 (1). pp. 158-163. ISSN: 1462-0316
- Harwood, . and Hadley, . (2004) Graphical tracking systems revisited: a practical approach to computer scheduling in horticulture. In: Fink, . and Feller, . , (eds.) Proceedings of the International Workshop on Models for Plant Growth and Control of Product Quality in Horticultural Production. Acta Horticulturae International Society Horticultural Science , Leuven 1. pp. 179-185. ISBN: 9066050292
- Fenn, . , Daymond, . , Binns, . , Hadley, . (2004) The role of intermediate cocoa quarantine in preventing the spread of pests and diseases.
- Fang, . , Wetten, . , Hadley, . (2004) Cryopreservation of cocoa (Theobroma cacao L.) somatic embryos for long-term germplasm storage. Plant Science , 166 (3). pp. 669-675. ISSN: 0168-9452 | doi: https://dx.doi.org/10.1016/j.plantsci.2003.11.002
- De Camacaro, . , Camacaro, . , Hadley, . , Dennett, . , Battey, . , Carew, . (2004) Effect of plant density and initial crown size on growth, development and yield in strawberry cultivars Elsanta and Bolero. Journal of Horticultural Science & Biotechnology , 79 (5). pp. 739-746. ISSN: 1462-0316
- Daymond, . , Fenn, . , Binns, . , Hadley, . (2004) Imports and availability of accessions from the University of Reading Intermediate Cocoa Quarantine Facility. Ingenic Newsletter , 9
- Daymond, . and Hadley, . (2004) The effects of temperature and light integral on early vegetative growth and chlorophyll fluorescence of four contrasting genotypes of cacao (Theobroma cacao) . Annals of Applied Biology , 145 (3). pp. 257-262. ISSN: 0003-4746 | doi: https://dx.doi.org/10.1111/j.1744-7348.2004.tb00381.x
- Tabatabaie, S. , Gregory, P. , Hadley, P. (2004) Uneven distribution of nutrients in the root zone affects the incidence of blossom end rot and concentration of calcium and potassium in fruits of tomato. Plant and Soil , 258 (1-2). pp. 169-178. ISSN: 0032-079X
- Tabatabaie, S. , Gregory, P. , Hadley, P. (2004) Distribution of salinity in the root zone affects the yield, quality of tomato fruit. In: Papadopoulos, . , (eds.) ACTA HORTICULTURAE . ACTA HORTICULTURAE , 633. International Society Horticultural Science , Toronto, Canada. pp. 439-444. ISBN: 90-6605-627-4
- Tabatabaei, S. , Gregory, P. , Hadley, P. (2004) Distribution of nutrients in the root zone affects yield, quality and blossom end rot of tomato fruits. Journal of Horticultural Science & Biotechnology , 79 (1). pp. 158-163. ISSN: 1462-0316
- Hadley, . and Fordham, . (2003) Carrot, parsnip and beetroot. In: Caballero, . , Trugo, . , Finglas, . , (eds.) Encyclopedia of Food Sciences and Nutrition. 2nd edition. Elsevier Science Ltd pp. 5941-5945. ISBN: 9780122270550 | doi: https://dx.doi.org/10.1016/B0-12-227055-X/01238-4
- Hadley, . and Fordham, . (2003) Miscellaneous root crops. In: Caballero, . , Trugo, . , Finglas, . , (eds.) Encyclopedia of Food Sciences and Nutrition. 2nd edition . Elsevier Science Ltd pp. 5948-5951. ISBN: 9780122270550 | doi: https://dx.doi.org/10.1016/B0-12-227055-X/01240-2
- Hadley, . and Fordham, . (2003) Swede, turnip and radish. In: Caballero, . , Trugo, . , Finglas, . , (eds.) Encyclopedia of Food Sciences and Nutrition. 2nd edition. Elsevier Science Ltd pp. 5946-5948. ISBN: 9780122270550 | doi: https://dx.doi.org/10.1016/B0-12-227055-X/01239-6
- Hadley, . and Fletcher, . (2003) Developments in novel plastic films designed for greenhouse cladding. In: Incoll, L. , (eds.) Proceedings of the UK Controlled Environment Users' Group 2002 Scientific meeting: The glasshouse environment. Proceedings of the UK Controlled Environment Users' Group pp. 6-7.
- Fordham, . and Hadley, . (2003) Cabbage and related vegetables. In: Caballero, . , Trugo, . , Finglas, . , (eds.) Encyclopedia of Food Sciences and Nutrition. Elsevier Science Ltd pp. 5932-5936. ISBN: 9780122270550 | doi: https://dx.doi.org/10.1016/B0-12-227055-X/01234-7
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