weed biocontrol by using eriophid mites could be a safe and efficient strategy. in order to find an ecological non-chemical approach for controlling of weeds, and studying the possibility of using eriophyid mites, field surveys were conducted in razavi khorasan and north khorasan provinces during spring 2010. collecting of mites was carried out at all of the vegetative and reproductive stages o...

Pistachio is one of the most important horticultural crops in Iran.  There is a unique role for amino acids in the plant response to stressful conditions, and special physiological role for Arginine (Arg) compared to other amino acids.  The effects of this compound were investigated on vegetative and reproductive characters of bearing pistachio trees of ‘Ahmad-Aghaei’. The experiments were done...

In the sub-tropics, water and nitrogen are the most important factors limiting the grain yield of maize. The effect of nitrogen (N) rates and drought stress at different growth stages of maize were investigated. Nitrogen treatments consisted of 100, 150, and 200  kgN.ha-1 from the urea source while water stress treatments were composed of irrigation-off since the early 10-leaf stage to emergenc...

Gladiolus is an important marketable cut flower, especially valued for use in floral arrangements. We assessed the effects of two different methods of application (foliar spray and drench) and various concentrations of gibberellic acid (GA3), salicylic acid (SA), mival (MI) and krizatcin (KR) on vegetative and reproductive features of Gladiolus hybridus. The experiment was planned in a factoria...

thrips species injurious to grapes are known as pests in vineyards all over the world and belong to the main pests of grapes in west azarbaijan, iran. in this study, thrips species occurring in west azarbaijan vineyards were identified and the predominant species documented according to their relative abundance at different growth stages. the seasonal abundance of predominant species was invest...