Mohammad Taghi Darzi; Mohammadreza Haj Seyed Hadi
Abstract
To study the effects of organic and bio-fertilizers on quantity and quality of essential oil of dragonhead (Dracocephalum moldavica L.), an experiment was conducted as randomized complete blocks design with eight treatments and three replications at agricultural research field of the Company of Ran in ...
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To study the effects of organic and bio-fertilizers on quantity and quality of essential oil of dragonhead (Dracocephalum moldavica L.), an experiment was conducted as randomized complete blocks design with eight treatments and three replications at agricultural research field of the Company of Ran in Firouzkuh of Iran during the growing season of 2014-2015. The treatments were 20 t/ha manure, 10 t/ha vermicompost, biofertilizer (2 lit/ha nitroxin + 2 lit/ha bio-superphosphat), 10 t/ha manure + 5 t/ha vermicompost, 20 t/ha manure + biofertilizer, 10 t/ha vermicompost + biofertilizer, 10 t/ha manure + 5 t/ha vermicompost + biofertilizer and chemical fertilizer (NPK: 80, 70 and 80 kg/ha). The results have shown that the highest essential oil percent, essential oil yield, geraniol percent and linalool percent were obtained in essential oil at the treatment of application of 10 t/ha vermicompost and the maximum geranial percent, neral percent and neryl acetate percent were observed in essential oil at the treatment of integrated application of 10 t/ha vermicompost and biofertilizer. Also, the highest geranyl acetate percent was obtained in essential oil at the treatment of chemical fertilizer application (control). Generally, the highest percent and yield of essential oil and essential oil quality were obtained using 10 t/ha vermicompost application.
Rahimeh Hosseinpour; Mahdi Ghajar Sepanlou; Soroosh Salek Gilani
Abstract
In order to study the effect of vermicompost individually and enriched with chemical fertilizer on soil micronutrient content and micronutrient concentration of lettuce (Lactuca sativa L.), athree year experiment was conducted with randomized complete block design in two factors and three replications ...
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In order to study the effect of vermicompost individually and enriched with chemical fertilizer on soil micronutrient content and micronutrient concentration of lettuce (Lactuca sativa L.), athree year experiment was conducted with randomized complete block design in two factors and three replications at the experimental farm of Sari Agricultural Sciences and Natural Resources University in 2008. The main plot included six fertilizer treatments consisting of T1 )control(, T2) chemical fertilizers(, T3 (20 ton.ha-1 of vermicompost enriched with 50 percent chemical fertilizer), T4 (20 ton.ha-1 of vermicompost individually), T5 (40 ton.ha-1 of vermicompost enriched with 50 percent chemical fertilizer) and T6 (40 ton.ha-1 of vermicompost) individually. One – year (2006), two - year (2006-7) and three - year (2006-8) application of that fertilizer were considered as sub plots. The results showed that different treatments had significant effects on the available contant of Fe and Zn of soil, root and shoots and also on Cu and Mn concentration of the lettuce roots. The result also showed that the concentration of the elements in soil and lettuce affected significantly by one year, two year and three year application of these fertilizers. Interaction of the two factors had significant effect on the avaiable Fe an Zn content of soil and Zn concentration of root and shoot. Totally, from 40 ton.ha-1 vermicompost enriched with 50 percent chemical fertilizers, the highest avaiable micronutrient content was obtained in the soil and the higest micronutrient concentration was obtained in root and shoot of lettuce.