Study on effects of foliar spraying and soil application of humic acid on vegetative characteristics and flower yield of saffron (Crocus sativus L. )

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AMINIFARD M.H.; AHMADI F.

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Journal: Crop Production Year:2018 | Volume:11 | Issue:2 Page(s): 123-132

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Title

Study on effects of foliar spraying and soil application of humic acid on vegetative characteristics and flower yield of saffron (Crocus sativus L. )

Author(s)

AMINIFARD M.H. | AHMADI F. | Issue Writer Certificate

Keywords

Organic fertilizersQ1

Medicinal plantQ2

CormelQ1

Stigma yieldQ1

Abstract

Background and objectives: Saffron (Crocus sativus L. ) is one of the most valuable indigenous plants, herbs and spice in the world. Saffron is cultivated in most part of Iran, because of low water requirement and well adaptation to diverse environmental condition. Application of organic material is one of the most important factors for acheiving maximum yield of saffron plants. The aim of this study was to investigate effects of soil and foliar application of humic acid on vegetative and reproductive characteristics of saffron. Materials and methods: This experiment was carried out as a factorial based on randomized completely block design (RCBD) with three replications in research farm of University of Birjand, Iran, during 2015-2016 growing season. Treatments were usage type of humic acid (soil and foliar application) and different amounts of this fertilizer (0, 5, 10 and 15 Kg ha-1). The measured indices were included of leaf characteristics (leaf length, fresh and dry weight), corm characteristics (corm number, total weight, Cormel weight and diameter) and flower characteristics (flower number and fresh total yield, average stigma length, stigma fresh and dry yield). Results: Results showed that, application of humic acid improved the leaf growth indices (leaf length, fresh and dry weight) and corm growth indices (Cormel weight and diameter). The highest these indices were obtained in the soil application of humic acid. Also, results showed that flower reproductive characteristics (flower number and total fresh yield, stigma fresh and dry yield) were influenced by type of applied humic acid. The highest stigma fresh (0. 781 g m-2) and dry (0. 147 g m-2) yield were obtained in soil application. Humic acid concentration improved the leaf growth indices (leaf length, fresh and dry weight) and corm growth indices (Cormel weight and diameter) and flower reproductive characteristics (flower number and fresh total yield and stigma fresh and dry yield). The highest total fresh yield of flower (18. 201 g m-2) were obtained in plants treated with 10 Kg ha-1 humic acid, while the lowest values was recorded in the control. Interaction effects of these factors were effective on leaf length, flower number and stigma dry yield. The highest stigma dry yield (0. 158 g m-2) and flower number (48. 833 Flower m-2) were obtained in plants treated with 10 Kg ha-1 soil application of humic acid. Conclusion: Thus, humic acid increased saffron vegetative and reproductive characteristics and soil application than the spray was more effective in these characteristics, altogether 10 Kg ha-1 humic acid as soil application increased Stigma yield of saffron.

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APA: Copy

AMINIFARD, M.H., & AHMADI, F.. (2018). Study on effects of foliar spraying and soil application of humic acid on vegetative characteristics and flower yield of saffron (Crocus sativus L. ). ELECTRONIC JOURNAL OF CROP PRODUCTION, 11(2 ), 123-132. SID. https://sid.ir/paper/395788/en

Vancouver: Copy

AMINIFARD M.H., AHMADI F.. Study on effects of foliar spraying and soil application of humic acid on vegetative characteristics and flower yield of saffron (Crocus sativus L. ). ELECTRONIC JOURNAL OF CROP PRODUCTION[Internet]. 2018;11(2 ):123-132. Available from: https://sid.ir/paper/395788/en

IEEE: Copy

M.H. AMINIFARD, and F. AHMADI, “Study on effects of foliar spraying and soil application of humic acid on vegetative characteristics and flower yield of saffron (Crocus sativus L. ),” ELECTRONIC JOURNAL OF CROP PRODUCTION, vol. 11, no. 2 , pp. 123–132, 2018, [Online]. Available: https://sid.ir/paper/395788/en

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