Abstract
In the Jiloca valley (Teruel, Spain) saffron (Crocus sativus) is attracting attention because of its high quality and the growing demand in the gourmet market. To increase production the phytosanitary status needs to be guaranteed as well as the mechanization of the basic agronomic practices, especially weed control operations. Saffron is a perennial crop and weeding is especially important after flowering in mid of October until May when the aerial part disappears. Eight field trials were established to test the effect of flextine harrow, torsion and finger weeders. Torsion and finger weeders were difficult to adjust due to compact soils and steering problems. Efficacy for these tools was higher than 80% in two out of 12 occasions, only, while the flex-tine harrow exceeded this value in 7 occasions out of 18. The flextine harrow did no require adjustments on the row and could be used in an aggressive position because of the 20 cm plantation depth of the corms. Weeds including the Poaceae Lolium rigidum could be effectively controlled with the flextine harrow provided climatic conditions allowed treating immediately after flower harvest. Saffron flower and corm density were reduced by more than 40% after 3 cropping seasons without weed control compared to harrowing. Only slight differences were found in bulb size being higher for the harrowed plots. The use of the flex-tine harrow is highly recommended to reduce yield losses as well as to avoid weeds hosting viruses.
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References
Ascard J & Bellinder RRB, 1996. Mechanical in-row cultivation in row crops. Proc II Int Weed Control Cong; Copenhagen (Denmark), June 25–28. pp: 1121–1126.
BBCH, 1997. Kompendium der phänologischen Entwicklungsstadien mono- und dikotyler Pflanzen. Erweiterte BBCH-Skala. ISBN 3-9520749-2-6.
Bàrberi P, Silvestri N, Peruzzi A & Raffaelli M, 2000. Finger-harrowing of durum wheat under different tillage systems. Biol Agric Hortic 17, 285–303.
Cirujeda A, Aibar J & Zaragoza C, 2011. Remarkable changes of weed species in Spanish cereal fields from 1976 to 2007. Agron Sustain Dev 31, 675–688.
Cloutier DC, van der Weide RY, Peruzzi A & Leblanc ML, 2007. Mechanical weed control. In: Non chemical weed management: principles, concepts and technology. Upadhyaya MK and Blackshaw RE Editors, CABI, Oxon, UK.
Ferrence SC & Bendersky G, 2004. Therapy with saffron and the goddess at Thera. Perspect Biol Med 47, 199–226.
Gresta F, Lombardo GM, Siracusa L & Ruberto G, 2008. Saffron, an alternative crop for sustainable agricultural systems. A review. Agron Sustain Dev 28, 95–112.
Kurstjens DAG, Perdok UD & Goense D, 2000. Selective uprooting by weed harrowing on sandy soils. Weed Res 40, 431–447.
Liebman M & Gallandt ER, 1997. Many little hammers: ecological management of crop-weed interactions. In: Ecology in Agriculture, Ed. M. Liebman & E.R. Gallandt, Cambridge Ed., 291–343.
MAGRAMA, 2011. Anuario de estadísticas agrarias 2011. Available in http://www.magrama.gob.es/estadistica/pags/anuario/2011/AE_2011_12.pdf. [14 November 2013].
Marí A, 2010. Características del cultivo de azafrán (Crocus sativus) en el Valle del Jiloca (Teruel): estudio de la flora arvense y mejora del desherbado mecánico. Proyecto Final de Carrera. Escuela Universitaria Politécnica La Almunia de Doña Godina, Zaragoza, Spain.
Melander B & Hartvig P, 1995. Weed harrowing in seeded onions. Proc IX EWRS Symp Challenges for Weed Science in a Changing Europe, Budapest (Hungary), July 10–12. pp: 543–549.
Melander B & Rasmussen G, 2001. Effects of cultural methods and physical weed control on intrarow weed numbers, manual weeding and marketable yield in direct-sown leek and bulb onion. Weed Res 41, 491–508.
Melander B, Cirujeda A & Jorgensen MH, 2003. Effects of inter-row hoeing and fertilizer placement on weed growth and yield of winter wheat. Weed Res 43, 428–438.
Oerke EC, 2006. Crop losses to pests. Centenary Review. J Agr Sci 144, 31–43.
Pardo G, Cirujeda A, Aibar J, Cavero J & Zaragoza C, 2008. Weed harrowing in winter cereal under semi-arid conditions. Span J Agric Res 6, 661–670.
Pérez Bueno M, 1995. El azafrán, historia, cultivo, comercio, gastronomía. Ediciones Agrotécnicas S.L., Madrid, Spain.
Sanjuán-López AI, Resano-Ezcaray H & Camarena-Gómez DM, 2009. Developing marketing strategies for Jiloca saffron: a price hedonic model. Span J Agric Res 7, 305–314.
Shahrokhi MB, Rahimi H & Rashed MH, 2006. Saffron pests, diseases and weeds. In: (Kafi M, Koocheki A, Rashed MH & Nassiri M (Eds.) 2006. Saffron (Crocus sativus) production and processing. USA. Science Publishers.
Soufizadeh S, Sheibany K, Zand E, Baghestani MA, Kashani FB & Nezambadi N, 2007. Integrated Weed Management in Saffron (Crocus sativus). Proc. 2nd IS on Saffron Biology and Technology. Acta Hort 739, 133–137.
Wilson BJ, Wright KJ & Butler RC, 1993. The effect of different frequencies of harrowing in the autumn or spring on winter wheat, and on the control of Stellaria media (L.) Vill., Galium aparine L. and Brassica napus L. Weed Res 33, 501–506.
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Cirujeda, A., Marí, A.I., Aibar, J. et al. Experiments on mechanical weed control in saffron crops in Spain. J Plant Dis Prot 121, 223–228 (2014). https://doi.org/10.1007/BF03356515
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DOI: https://doi.org/10.1007/BF03356515