Abstract
Some fertilizers practices could be used to improve Baraka seed Nigella sativa L. as a medicinal crop like organic farmyard manure which efficiently applied to enhance growth and yield. Thus, a field experiment was conducted out at Research Station in Tikrit-Iraq during 2012/2013 season to estimate the impact of bat guano (0, 75, 125 and 175 kg.ha-1), seaweed extract as kelpak (0, 1, 2 and 3ml.l-1) on some physical and chemical essential oil components. Two factors were arranged in factorial experiment in randomized complete block design with three replicates. Thus, results revealed that application of bat guano at 125 kg.ha-1 was superior in enhancement of essential oil and its some physical and chemical properties as essential oil% of 1.53%, specific gravity of 0.95 g.cm-3, refractive index of 1.82, essential oil density of 0.93, dithymohydroquinone of 37.44µg.µl-1 and thymol of 25.73 µg.µl-1. Moreover, kelpak (3ml.l-1) significantly improved physical and chemical properties of essential oil which were essential oil% of 1.52%, specific gravity of 0.93 g.cm-3, refractive index of 1.72, and essential oil density of 0.94 and thymol of 25.92 µg.µl-1. Whereas, the main component dithymohydroquinone effected by application of 2 ml.l-1kelpak of 37.04 µg.µl-1. It could be recommended to use bat guano as alternative to chemical fertilizer fortified with foliar application of seaweed extract as kelpak so as to improve physical and chemical properties of essential oil.
Highlights
Barakaseed Nigella sativa L. (Black Cumin) is belonging to ranunuclaceae
In relation to bat guano, it could be applied as better alternative organic fertilizer compared to other organic fertilizers (14), who pointed that grain yield and biomass of maize significantly increased by application of bat guano and chicken manure
In the course of this our farm observations, this study was conducted to investigate the effect of bat guano and kelpak on essential oil and its physical and chemical properties of barakaseed under Iraqi conditions
Summary
Results revealed that application of bat guano at 125 kg.ha-1 was superior in enhancement of essential oil and its some physical and chemical properties as essential oil% of 1.53%, specific gravity of 0.95 g.cm-3, refractive index of 1.82, essential oil density of 0.93, dithymohydroquinone of 37.44μg.μl-1 and thymol of 25.73 μg.μl-1. اذ ان اضافته كفوءة في تحسين النمو وزيادة.قد تستخدم بعض العمميات الز ارعية لتحسين اداء حبة البركة كمحصول طبي لاسيما التسميد العضوي كسماد المزرعة ومستخمص الاعشاب0-هـ. كغم054 و024 و54 و1 ) لمعرفة تاثير درق الخفاش بمستويات2102\2102( بذا نفذت تجربة حقمية في الموسم الشتوي.الحاصل في بعض الصفات الفيزيائية لمزيت الاساسي ومكوناته الكيميائية في محطة الابحاث التابعة لجامعة تكريت0-لتر. مل2 و2 و0 و1 ) بمستوياتKelpak( البحرية. حبة البركة، الزيت الطيار،kelpak محمول، اعشاب بحرية، درق الخفاش:كممات مفتاحية
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