Carbon, non-exchangeable hydrogen, and oxygen isotope ratios of cellulose of Avicennia germinans and Rkizophora mangle plants hydroponically grown under different salinities (0, 18, 45% sea water, but with irrigation waters having the same isotopic ratios) were measured to determine the possibility of using isotopic ratios of plant tissues as biological recorders of sea level rise. There was a ...

this study evaluated the irrigation water management and different amounts of boron fertilizer affacts on yield and and water use efficiency of sugar beet. the two-factor factorial design in randomized complete block with three replications of irrigation and different levels of boron fertilizer for three years (2000-02) was designed in qazvin. the main four irrigation treatments were t1, t2, t3...

two-year experiments was conducted to find the effect of value and times of supplementary irrigation on water requirement and yield production of three new wheat cultivar namely (‘w33g’, ‘cross alborz’ and ‘bahar’) in three replicate randomized complete block factorial experiments since 2009-11. experiments were performed at the campus of agriculture and natural resources of razi university lys...

Background & Aim: Aloe vera is used in the food and pharmaceutical as an aid to effective treatment. The purpose of this study is to improve growth, increase production of valuable metabolites and increase the sugars in Aloe vera gel with low cost and high efficiency under water stress conditions. Experimental: In this study, Aloe vera potted in greenhouse conditions...

introduction: lack of water and deterioration in the quality of soil and water resources are considered to be the prime cause of reduced crop yield in arid and semi-arid regions ‘more crop per drop’ by trickle irrigation, deficit irrigation, and uncommon water are the best strategies for mitigating water crises. different irrigation management strategies are needed to increase production in dif...

This research was carried out to evaluate the effect of drought stress on grain yield and qualitative traits in some Iranian landraces of confectionary sunflower. Fifty six confectionary sunflower landraces were evaluated using three different water treatment conditions with three separate rectangular 7 × 8 lattice design with two replications. Irrigation treatments were as follows optimum irri...

water scarcity in arid and semi-arid climate of iran has made deficit irrigation as a strategy for optimal water use and conservation in agricultural sector. this study aimed at evaluating the effects of water-deficit stress and n fertilizer levels on sugar beet performance. the study was conducted in split block design based on randomized complete block design arrangement. the row factor consi...

an experiment was conducted in 2011 to evaluate the effect of weed interference on sunflower yield in deficit irrigation and to study the grass and broadleaf weeds growth at different moisture condition. the experiment was arranged as factorial, randomized complete blocks with four replicates per treatment. treatments included different moisture conditions [40%, 60%, 80%, and 100 percent of cro...