Abdollah Hasanzadeh Gorttapeh; Saeid Heydarzadeh; Amir Rahimi
Abstract
Amaranth forage plants, due to their nutritional properties and ability to adapt to drought conditions, can be a good option to deal with water deficiency and increased productivity under different fertilizer systems. This experiment spans for 2 years in form of a complete random block design based on ...
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Amaranth forage plants, due to their nutritional properties and ability to adapt to drought conditions, can be a good option to deal with water deficiency and increased productivity under different fertilizer systems. This experiment spans for 2 years in form of a complete random block design based on a factorial with three replications, three levels of irrigation (irrigation after depleting 40%, 60%, and 75% of available water) as the first factor and organic (cow manure and phosphate-2), chemical (phosphorus and nitrogen), integrated, and control (no fertilizer) fertilizer systems as the second one. Results of this study show that crude protein, digestibility of dry matter, water-soluble carbohydrates, digestible nutrients, relative nutritional value, and specific energy of lactation, due to the application of different fertilizer systems in each irrigation level have been improved, compared to non-consumption of the fertilizer. The performance of biomass and forage protein are increased by 38.89% and 54.37%, 30.60% and 41.23%, and 22.20% and 34.92% in optimal, moderate, and severe stress conditions, respectively in integrated fertilizer system than the control. Also, this study shows that the use of organic fertilizers alone or combined with chemical fertilizers improve quantitative and qualitative traits of amaranthus forage irrigation after depleting 40% and 60% of available water. So, optimal use of biological inputs for sustainable agriculture and reduction of pollution, caused by the use of chemical fertilizers, is recommended.
Fatemeh Zamani; Reza Amirnia; Esmaeil Rezaei-chiyaneh; Amir Rahimi
Abstract
In order to investigate the effect of biofertilizers on the seed yield and chemical composition of essential oil of fennel (Foeniculum vulgare L.), a field experiment was conducted as factorial based on randomized complete block design with three replications and twelve treatments at the Research Farm ...
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In order to investigate the effect of biofertilizers on the seed yield and chemical composition of essential oil of fennel (Foeniculum vulgare L.), a field experiment was conducted as factorial based on randomized complete block design with three replications and twelve treatments at the Research Farm of the Faculty of Agriculture, University of urmia, Iran during growing season of 2015-2016. The first factor included of three Landraces (Urmia, Hamdan and Germany) and second factor included of four biofertilizers as: complete biofertilizers (consumption of nitrogen, phosphorus, potassium and sulfur supplier bacteria), mycorrhizal fungi (Glomus intraradices), integrated Bacterial biofertilizers with mycorrhizal fungi and control treatment. Results indicated that application of biofertilizers enhanced the seed yield, colonization percentage, nutrients absorption, essential oil content, essential oil yield and essential oil composition. Among treatments, combined usage of biofertilizers showed that great increasing in studied traits than individual consumption. Also, The effect of landrace on all studied quantitative and qualitative traits was significant except for seed nitrogen. Seed yield of the German landrace were higher than Hamedan and Urmia landrace. The main components of the essential oils fennel were; Anethol, Fenchone, Limonene and p-Allylanisole. The highest amount of anethole was found in Urmia landrace in inoculated with mycorrhiza and bacterial biofertilizer. In general, the results showed that the use of biofertilizers had a significant effect on the improvement of quality and quantity of fennel traits.