wheat crop, considering its high planting area and consumption at national scale, demand a regular yield increase. humic acid, as an organic acid obtained from humus and organic sources without any environmental destructive effects, improves wheat yield particularly in variable environment conditions. in order to evaluate the effects of different levels of humic acid on shoot and wheat yield, a...

abstract- annual medicago species (medicago spp.) are native to the mediterranean region and widely used in fields and pastures in iran. there are several methods of sowing annual medicago species, each with different effects on the performance. however, there is currently no sufficient information about the appropriate methods for sowing medicago species. in order to evaluate methods of sowing...

The present study investigated the effects of supplemental foliar nitrogen (N), phosphorous (P) and potassium (K) spray, alone or in various combinations, on physiological processes and nutrients uptake in wheat under water deficit conditions. The study comprised of two phases; during the first phase, ten local wheat (Triticum aestivum L.) genotypes were evaluated for their response to PEG-6000...

to evaluate the effects of phosphate solubilizing bacteria and chemical phosphorous fertilizer on turnip (brassica rapa) forage yield under limited irrigation regimes, a field experiment was conducted in research farm of college of agriculture and natural resources, university of tehran, in karaj/iran during 2009 growing season. the experimental treatments were arranged as split plots. five lev...

Background and aim: The genus Satureja L. (Lamiaceae) includes 12 species of annual and perennial herbaceous plant in Iran. Satureja species have economic and medicinal importance because of their high essential oil content. In addition, they are used as culinary herbs and in the food, perfume and cosmetic industries. The aim of this study was to inve...

Calcium ions (Ca(2+)) and Ca(2+)-related proteins mediate a wide array of downstream processes involved in plant responses to abiotic stresses. In Arabidopsis (Arabidopsis thaliana), disruption of the vacuolar Ca(2+)/H(+) transporters CAX1 and CAX3 causes notable alterations in the shoot ionome, including phosphate (P(i)) content. In this study, we showed that the cax1/cax3 double mutant displa...

in order to study the effects of potassium application on uptake and allocation of nitrogen and seed protein on two lentil cultivars in rain-fed condition a factorial experiment based on randomized complete block design with three replications was conducted at ardabil research center for agriculture and natural resources, in 2008. three potassium levels (0, 30 and 60 kg.ha-1), three nitrogen le...