Search Results for : seed germination
Morpho-physiological characterization of cultivated rice (Oryza spp.) during early vegetative growth under different soil water conditions
In rainfed rice cultivation, weeds, low or no fertiliser inputs and no water control can be production constraints. Vegetative early vigor may favour weed competitiveness. Since Oryza glaberrima is considered as genetic resources for this characteristic, growth analyses of three lines were made from seeds to juvenile plants of 35 days after seed soaking (DAS) […]
Role of new novel entomopathogenic fungi Paecilomyces lilacinus to mortality and infection process of Tetrancyhus kanzawai (Kishida) (Tetranychidae: Acarina)
P. lilacinus is a common soil hyphomycete with a cosmopolitan distribution. Since Its characteristic has similarity with Metarhizium and Beauveria, it is assumed that it can be effective as well Metarhizium and Beauveria . The experiment was conducted in the Green house with papaya plant. The papaya seedlings were hand-sprayed with suspension with a density […]
Effect of fly ash on growth and yield of sunflower (Helianthus annuus L.)
Fly ash, the notorious waste product of coal based thermal power plants, rich in micro and macronutrients and has the potential to improve the physical and chemical properties of soil. With this concept, a field experiment was carried out to find out the efficacy of the fly ash for agriculture. Fly ash from NALCO CPP, […]
The effect of environmental characteristics and metabolism in response to water stress in three Festuca species
In order to determine the reaction of three Festuca species to drought stress, two separate experiment were conducted in both germinator and greenhouse conditions using factorial experiment based of completely randomized design with three replications in 2010 in Tehran, Iran. The drought treatments were four levels of osmotic potential (0, -0.3, -0.6 and -0.9 MPa) […]
Assessment of ecological and phenological traits of Prangos ferulacea (case study: Barzok mountains and Naragh, Kashan, Iran)
In order to study ecological and phenological traits of Prangos ferulacea as an important medicinal plant, this research was conducted in Barzok Mountains and Naragh in Esfahan province, Iran. Random samples of this plant were taken and their vegetation habitat conditions and their growth characteristics including height of collar leaves, height of the flower stem, […]
Effect of foliarly applied potassium on Capsicum Annuum L. grown under sodium chloride stress
Salinity is one of the environmental factors that has a critical influence on the germination and plant establishment. In present study, two independent experiments were conducted to investigate the effects of salinity and potassium on germination, seedling establishment and growth of Capsicum annuum L. A range of sodium chloride concentrations control (non-saline), 60mM NaCl (EC=8.5mS/cm), […]
Risks associated with dry soil planting time in Ethiopia
Dry soil planting is practiced in response to variable rainfall onset in Ethiopia to maximize use of the full season. Rainfall data of >30 years for seven locations were used to evaluate dry soil planting opportunities on Vertisols. Three rainfall related risks were evaluated: (i) seed lies in dry soil without imbibing water for >20 […]
Role of salicylic acid and ascorbic acid in the alleviation of salinity stress in wheat (Triticum aestivum L.)
Ascorbic acid is a major primary antioxidant, plays an important role in preserving the activity of enzymes. Salicylic acid is an endogenous growth regulator of phenolic nature, which participates in the regulation of physiological processes in plants. This research was conducted to evaluate the effects of hormonal priming with ascorbic acid (AS) and salicylic acid […]
Consideration of allelopathic effects of Artemisia annua L. on morphological characteristics of Lactura sativa L.
Flowering and germination are important step of plant life. To study the allelopathic effect of aqueous extracts of Artemisia annua L. on early growth of lettuce, an experiment was designed in a completely accidental plot with 5 treatments (control, 25%, 50%, 75% and 100% of concentration of aqueous extracts) and four times repetition in the […]
An assessment of performance of soya bean (Glycine max) variety in low rainfall areas of Zimbabwe
Majority of small holder farmers in Zimbabwe are located in marginal rainfall areas where soils are sandy and less fertile. These farmers have been known to grow drought resistant varieties of maize, sorghum, pearl millet and finger millet in order to fight hunger and malnourishment. Due to environmental, ecological and other constraints, small holder farmers […]