Abstract
Saffron (Crocus sativus L.) is one of the most important exports products in Iran that
proper concentration of nutrients is particularly important in the development and
production. Since saffron is reproduced by corm, so always been considered production
of replacement corms through appropriate nutrition; and concentration of element in
corm in specific stage of growth and development has high correlation with plant yield.
Therefore, this study was conducted to determine nutrients concentration in corm of
saffron in perennial fields of Qaen and Nehbandan in South Khorasan in 2015. The
information of two regions (Qaen and Nehbandan) were collected from 3, 5 and 7 yearsold fields. Then, three fields with at least 500 m2 under cultivation selected for each age
of 3, 5 and 7 years fields and 3 plots from each field and one corm sample from each
plot were selected. The concentration of phosphorus (P), potassium (K), nitrogen (N)
and iron in corm of saffron were analyzed based on standard laboratory methods.
Results revealed that there were significant differences in N, P, K and iron
concentrations of saffron corm (P≤0.01), but the effects were distinct for corm number
in different weight groups. The present study showed that in saffron fields, N, P, K and
iron concentration in corm were the most effective parameters for saffron yield
increment, which regression correlations showed yield increment compeer to the
change in these indices. Investigation of nutrients concentration of the corm on saffron
yield shows the important role of such elements in yield. Therefore, nutrient
concentration in saffron corms affect the plant nutrition, promoting growth and yield of
crop. Generally, corm selection with optimum weight for sowing and proper use of
nutrients, especially nitrogen, phosphorus, potassium and iron, as well as their correct
balance in soil, can be effective in yield increment and stability of soil fertility.
Mobina Maktabdaran, Hassan Sayyari, Majid Jami Alahmadi, Golam Reza Zamani. (2018) Relationship between nutrient concentration in saffron corms and saffron yield in perennial fields of South Khorasan province, Asian Journal of Agriculture and Biology, Volume 6, Issue 4.
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