background: in the current iranian poultry industry, antibiotics are the most frequently used additive in poultry feeds to increase productivity. the negative effects on human health, resulting from the consumption of chicken whose feeds contain antibiotics, makes finding an appropriate alternative of great importance. as a result of their nature, herbal extracts could be specifically considere...

abstract the harvesting time and storage conditions of olive fruit are effective factors on the quality and quantity of oil. the harvesting time of olive is different in each area and it depends on climatic conditions.this investigation was carried out to assess the impact of harvesting time on olive oil quality and quantity frome two olive varieties cultivated in gorgan region. for this reason...

background: extraction of blood genomicdnais one of the main approaches for clinical and molecular biology studies. although several methods have been developed for extraction of blood genomic dna, most of these methods consume long time and use expensive chemicals such as proteinase k and toxic organic solvent such as phenol and chloroform. the objective of this study was to developed easy and...

plant spacing and nitrogen are the most important factors for increasing tuberose quality and quantity. in this study, field experiment carried out as factorial randomized completely block design (rcbd) in 3 replications. different levels of nitrogen (0, 50, 100, 150, 200, 250 kg/ha) of ammonium nitrate was used. second factor was different plant spaces (10, 15, 20 and 25 cm). results showed th...

background: biostimulants are amino acids and organic components, which can play main role in the plant growth and dry matter accumulation. objective: determine the influence of foliar application of active amino acids on quality and quantity yield of melissa officinalis l. methods: this study was conducted in a research farm at the institute of medicinal plants on the base of randomized comple...