nitrogen and phosphorus are two of the essential nutrients that promote plants' growth and yield. deficiency of these nutrients in soil is usually compensated through application of chemical fertilizers. chemical fertilizers on the other hand have detrimental effects on environment in addition to decreasing quality of agricultural products. the present study was conducted to evaluate the e...

in order to study the effects of vermicompost and biological fertilizers on vegetative yield and essential oil of basil (ocimum basilicum l.), an experiment was conducted based on a complete randomized block design with nine treatments and three replications at mashhad during growing season of 2009-2010. the treatments were: 1) vermicompost, 2) nitroxin (included: azotobacter sp. and azospirill...

to evaluate the effect of time and level of nitrogen application on quantity and quality of two carrot varieties, an experiment was carried out in the framework of a 4×3×2 factorial and based upon a randomized complete block design of three replications. the levels of 25, 50, 75 and 100 kg / ha of nitrogen fertilizer were investigated within 3 applied times, namely: simultaneous with bed prepar...

In order to evaluate the different growing media and nitrogen fertilizer (urea) on some morphological traits of Spathiphyllum plant, an experiment was carried out in split plot arrangement based on completely randomized design in three replications in greenhouse conditions in 2018. The main plot consisted of different growing media including T1: Leaf-mold, T2: Vermicompost and T3: A mi...

In this research, effect of vermicompost and plant growth promoting rhizobacteria (PGPR) on physiological traits of lemon balm under drought stress condition was investigated in year 2012 at Karaj Research Institute of Forest and Rangelands. Experiment was conducted as split-split plot in a randomized complete block design with three replications. irrigation (normal: irrigated to field capacity...

in order to study the effects of nitrogen fertilizer on yield and growth of soybean (glycine max l.) an experiment as factorial in rcb design with three replications was conducted during 2006 and 2007 years at north khorasan. factors were cultivar (hobbit, l.w.k., and williams), and nitrogen fertilizer (0, 50, 100, and 150 kg n/ha from urea source). results indicated that cultivar and n fertili...

background & aim: cassia angustifolia vahl is a valuable medicinal plant that it is important for constipation treatment. according to the importance of organic agriculture in increasing the yield of medicinal plants, the effect of bio-fertilizer on quantities yields of cassia angustifolia vahl or senna in karaj region (iran) was examined. experimental: this research was carried out in rand...

introduction: in iran, tuberose is ranked the forth after gladiolus, rose and carnation. these flowers are known as high quality products among which maximum exportation belongs to tuberose and gladiolus. in plant cultivation and development, adequate provision of nutrients is of crucial importance. tuberose needs plenty of nutrients to obtain the desirable quality and flowering. hence, tuberos...