EFFECTS OF PLANTING DATES, IRRIGATION MANAGEMENT AND COVER CROPS ON GROWTH AND YIELD OF SAFFRON (CROCUS SATIVUS L.)

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KOOCHEKI A.; REZVANI MOGHADDAM P.; FALLAHI H.R.

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Journal: AGROECOLOGY (بوم شناسی کشاورزی) Year:2016 | Volume:8 | Issue:3 Page(s): 435-451

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Title

EFFECTS OF PLANTING DATES, IRRIGATION MANAGEMENT AND COVER CROPS ON GROWTH AND YIELD OF SAFFRON (CROCUS SATIVUS L.)

Author(s)

KOOCHEKI A. | REZVANI MOGHADDAM P. | FALLAHI H.R. | Issue Writer Certificate

Keywords

BITTER VETCHQ3

CORMQ3

FLOWERING RATEQ2

MEDICINAL PLANTSQ2

PERSIAN CLOVERQ2

Abstract

Introduction: Saffron as a winter active plant with low water requirement is the most strategic medicinal plant in arid and semi-arid parts of Iran. This slow-growing plant has narrow leaves and no aerial stem, hence weeds can be overcome it. Moreover, because of its root and canopy structure an important part of different resources is not used by this low input crop. Therefore, the use of associated crops could be an effective way for increasing resources use efficiencies (Koocheki et al., 2016). Appropriate CORM planting date is another important factor that affects saffron growth and yield. Results of some studies show that late spring is the best time for CORM planting (Ghasemi-Rooshnavand, 2009; Koocheki et al., 2016). In addition, irrigation management has been evaluated in some studies, but irrigation immediately after CORM planting has not been investigated previously.Therefore, the aim of this study was to investigate the effect of irrigation management, planting date and the use of some companion crops on flowering of saffron during two growth cycles.Materials and methods This experiment was carried out as a split-split plot experiment based on a Randomized Complete Block Design with three replications at Research Station, Ferdowsi University of Mashhad, Iran in 2009-2011.Experimental factors included: planting date of saffron as main factor (first of June, first of August and first of October, 2009), the irrigation management as sub factor (irrigation and no irrigation after each planting date) and the companion crops as sub-sub factor [Persian clover (Trifolium resupinatum), BITTER VETCH (Lathyrus sativus) and control). CORM planting was done in 10×25 cm distances with 12 cm depth. In the second year irrigation was done again in the plots which were irrigated after planting in the first year at the same previous dates.Companion crops were sown after first flower picking (November, 2009), then their residue were returned to the soil in coming spring (May, 2010). Therefore, data were analyzed as split-plot in the first year and split-split-plot in the second year. Data analysis was done using SAS 9.1 and means were compared using Duncan multiple range test in 5% level of probability.Results and discussion Results showed that most growth and flowering indices of saffron were significantly affected by experimental factors. Quantitative indices of saffron were decreased considerably by delaying in planting date in both studied years. The highest flower yield was obtained in June planting date (28 and 98 kg.ha-1 in 2009 and 2010, respectively), while the lowest was shown in October planting date (18 and 34 kg.ha-1 in 2009 and 2010, respectively). Enhanced growth and yield of saffron in spring planting date is because of real dormancy stage of CORMs in this time. All studied indices were superior in no-irrigated treatments after planting in both studied years. The flower yield was 9 and 43 kg.ha-1 in 2009 and 2010 in irrigated treatments, respectively, while these values were 37 and 78 kg.ha-1in 2009 and 2010 in no-irrigation treatment, respectively. It has been reported that irrigation during the creation of the primary leaves in the CORM buds is negative, while irrigation after this period and simultaneous with the beginning of primary reproductive organs creation is suitable for saffron flowering.The application of cover crops improved partially the quantitative indices of saffron, particularly in BITTER VETCH treatment. In addition, the highest FLOWERING RATE and the lowest leaf appearance rate were observed in June planting date, no-irrigation and BITTER VETCH cover crop treatment. The positive effects of short-growth cyclecompanion crops on saffron is related to improvement of soil physical, biological and chemical properties, soil temperature regulation, prevention from nutrient leaching, N-fixation by Fabaceae species and help to weeds control.Conclusion: In total, saffron CORM planting few days after the falling leaves in spring, no-irrigation after CORM planting, avoidance from untimely summer irrigation and the use of appropriate winter cover crops are good strategies for saffron production.

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APA: Copy

KOOCHEKI, A., REZVANI MOGHADDAM, P., & FALLAHI, H.R.. (2016). EFFECTS OF PLANTING DATES, IRRIGATION MANAGEMENT AND COVER CROPS ON GROWTH AND YIELD OF SAFFRON (CROCUS SATIVUS L.). AGROECOLOGY (بوم شناسی کشاورزی), 8(3), 435-451. SID. https://sid.ir/paper/211337/en

Vancouver: Copy

KOOCHEKI A., REZVANI MOGHADDAM P., FALLAHI H.R.. EFFECTS OF PLANTING DATES, IRRIGATION MANAGEMENT AND COVER CROPS ON GROWTH AND YIELD OF SAFFRON (CROCUS SATIVUS L.). AGROECOLOGY (بوم شناسی کشاورزی)[Internet]. 2016;8(3):435-451. Available from: https://sid.ir/paper/211337/en

IEEE: Copy

A. KOOCHEKI, P. REZVANI MOGHADDAM, and H.R. FALLAHI, “EFFECTS OF PLANTING DATES, IRRIGATION MANAGEMENT AND COVER CROPS ON GROWTH AND YIELD OF SAFFRON (CROCUS SATIVUS L.),” AGROECOLOGY (بوم شناسی کشاورزی), vol. 8, no. 3, pp. 435–451, 2016, [Online]. Available: https://sid.ir/paper/211337/en

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