نوع مقاله : مقاله علمی پژوهشی
نویسندگان
1 استادیار بخش تحقیقات خاک و آب مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی
2 استادیار پژوهشکده زعفران، دانشگاه تربت حیدریه
کلیدواژهها
موضوعات
عنوان مقاله English
نویسندگان English
In order to investigate the response of saffron to rate and time of application and two kinds of potassium (K) fertilizers, a factorial experiment was conducted with three factors, including the amount of potassium (0, 20.75, 41.5, 65.25, 83 and 103.75 kg K.ha-1); time of application (annual application of K, and application of cumulative potassium needed for 4 years in the first year; these plots received 415, 332, 249, 166, 83, 0 Kg K.ha-1,respectively in the first year and at other three years not received any K fertilizer); and sources of potassium (K2SO4 and KCl) with three replications in a randomized complete block design in Gonabad agriculture and natural resource research station for 4 years. Results of the first year were not analyzed, because these results not related to fertilizer treatments.Results showed that effect of potassium rate on saffron dry stigma was significant (P<0.05) and the highest dry stigma yield was obtained from application of 20.75 Kg K.ha-1.Application time of K fertilizer had a significant effect on saffron dry stigma yield and application of fertilizer each year increased saffron dry stigma yield significantly (P<0.05) in compared to application of all fertilizer at the first year. Effects of sources of K on dry stigma yield of saffron was significant (P<0.05) and application of K in the form of K2SO4 increased dry stigma yield in compared to muriate of KCl treatment.
کلیدواژهها English
| تعداد مشاهده مقاله | 4,556 |
| تعداد دریافت فایل اصل مقاله | 2,007 |