ﺗﺄﺛﻴﺮ ﺗﺎرﻳﺦ اوﻟﻴﻦ آﺑﻴﺎری و ﻛﻮد دﻫﻲ ﺑﺮ ﺧﺼﻮﺻﻴﺎت ﻛﻤﻲ ﺑﻨﻪ زﻋﻔﺮان(Crocus sativus L) در ﻣﻨﻄﻘﻪ ﺧﻮاف

In order to study the effect of dates of first irrigation and fertilization on some of quantitative characteristics of saffron corm in Khaf region, the experimental design was conducted a split-plot in a randomized complete-block design with three replications in the year of 2013. Treatments consisted of dates of first irrigation (7th October, 22th October and 6th November), and five levels of fertilization (control, 5 and 40 liters per hectare of humic acid, 5 and 40 t.ha-1 animal manure). Traits including total corm weight, total corm number, corm number with <4, 4-6, 6-8 and >8 grams weight. Results showed that the date of first irrigation on all traits except total corm weight of saffron had a significant effect at the 0.01 level. Effects of different fertilization treatments on all traits except corm number with <4 grams weight were significant. The highest corms number with 4-6 grams weight were obtained with the first irrigation on 22th of October. While the maximum total corm weight, total corm number, corm number with 6-8 and >8 grams weight were obtained with the first irrigation on 6th November. In addition, results indicated that the 40 t.ha-1 animal manure fertilizer than the other of treatments was superior.