water deficiency is one of the most important factors for limiting crop yield in arid and semiarid regions. symbiosis with a variety of microorganisms in these regions is one of the modern ecological approaches for sustainable agriculture to reduce damages caused by environmental stresses. symbiotic of arbuscular mycorrhizal fungi (am) with the roots of crops has shown positive effects on agric...

the periwinkle with the scientific name of catharanthus roseus is one of the most important ornamental plants of the apocynaceae family. in order to evaluate the effect of different waters on the amount of the nutrient elements in soil and aerial parts of catharanthus roseus, a factorial experiment based on completely randomized design was conducted in 3 replications. experimental treatments we...

Inoculation of plant pathogenic bacteria in field plots has been improved by the use of organosilicone surfactants. Factors, such as cultivars, number of applications, crop stage, plant density, concentration of bacteria, and irrigation application method (overhead spray versus drop hoses), that may affect field screening of cotton cultivars for resistance to bacterial blight caused by Xanthomo...

this experiment was conducted at research greenhouse of college of agriculture, ferdowsi university of mashhad in 1381-1382. the experiment was designed based on the splitted plots in the form of completely randomized design and in four replications. irrigation intervals were in three levels of 12, 4, and 2 times per day at primary plots, and three substrates of new perlite, used perlit, and ri...

to study the effects of irrigation interval and nitrogen level on yield and yield components of fenugreek medicinal plant, an experiment in split plot arranged in randomized complete block design with three replications conducted at the azad university of birjand in 2009. treatments included; irrigation intervals (4, 8 and 12 day) as main plot and nitrogen fertilizer (none fertilizer, 50, 100 a...

using mulch to decrease and optimize water use, increase yield and fruit quality is known as a practical method. for this purpose, a split-factorial experiment based on complete block design with three replications on two melon cultivars was conducted in torbat-e-jam, iran. interval irrigation treatments in three levels (six, eight and 10 days) were considered as main plot and mulch (rice straw...

To investigate the effects of irrigation intervals and humic acid application on some phophysiological and biochemical of thyme (Thymus vulgaris), the experimental in the form of factorial in the design complete randomized block in four replications at Miandoab University Research Field in 2019. Experimental treatments were at four levels of irrigation intervals (once every three days, once eve...

To investigate the effects of organic fertilizers and irrigation frequencies on yield and quality of cherry tomato an experiment was conducted using six fertilizer doses including control (no fertilizer), NPK fertilizer (urea at 300 kg, TSP 200 kg and MoP 250 kg), cow-dung at 5 t ha-1, cow-dung at 10 t ha-1, poultry manure at 5 t ha-1 and poultry manure at 10 t ha-1 with two levels of irrigatio...