the main purpose of this study was to determine factors influencing the adoption of biological control by paddy farmers. the population consisted of paddy farmers in saricounty. sampling of 260 farmers was selected by using proportional random sampling method. data were collected by means of a questionnaire. validity of questionnaire was confirmed by agricultural jihad experts of saricounty and...

Objective: Importance of management of gardens weeds is an issue that unfortunately has less been investigated by weeds researchers of country. One of the most important restrictive agents of cultivated surface and producing crops of Citrus orchards are weeds. Methods: In this investigation, isolates of Fusarium solani were recovered from diseased broomrape collected from toma...

Opinions about the value of biological control are often extreme. Colloquially, biological control most often refers to classical biological control, in which one species is introduced from another region to control pests such as arthropod herbivores in agricultural systems, or weeds in managed and natural systems. As such, biological control has the potential to be a low-cost, chemical free, m...

Classical biological control, i.e. the introduction and release of exotic insects, mites, or pathogens to give permanent control, is the predominant method in weed biocontrol. Inundative releases of predators and integrated pest management are less widely used. The United States, Australia, South Africa, Canada, and New Zealand use biocontrol the most. Weeds in natural ecosystems are increasing...

Cardaria draba is an important, troublesome weed in the sustainable production of wheat. Inthe first step of this study, 100 actinomycete isolates were purified from soil samples collectedfrom the rhizosphere and phyllosphere of plants in different provinces of Iran. All isolates weresubjected to primary screening by assaying the fermentation broth of the sterile surfaces of C.draba leaves. Con...

Vascular endothelial growth factor A (VEGF-A) belongs to a family of heparin binding growth factors that include VEGF-B, VEGF-C, VEGF-D, and placental-like growth factor (PLGF). First discovered for its ability to regulate vascular endothelial cell permeability, VEGF is a well-known angiogenic factor that is important for vascular development and maintenance in all mammalian organs. The develop...

As a rule, all species of animals are regulated by other living organisms (antagonists) which are not under manipulation by man but they are naturally occurring in our surrounding environment. The process called natural biological control when man attempts to use naturally occurring antagonists to lower a pest population which would cause losses to plant or animals. Biological control is an eco...

The field of control and systems has been connected to biological systems and biotechnology for many decades, going back to the work of Norbert Wiener on cybernetics in 1965, the work of Walter Cannon on homeostasis in 1929, and the early work of Claude Bernard on the milieu interieur in 1865. Nonetheless, the impact of control and systems on devices and applications in the field of biology has...

the aim of this study was to comparable application cultural, biological and chemical control methods of pests, diseases and weeds in rice among paddy farmers in sari county. a sample of 260 farmers was selected by using proportional random sampling method. data were collected by means of a questionnaire. validity of questionnaire was confirmed by agricultural jihad experts of sari county and s...