Seyyed Gholamreza Moosavi
Abstract
In order to evaluate the effect of irrigation, humic acid and mycorrhiza application on physiological traits, yield and water use efficiency (WUE) of cotton, an experiment was carried out as a factorial split-plot based on a randomized complete block design with three replications in the research farm ...
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In order to evaluate the effect of irrigation, humic acid and mycorrhiza application on physiological traits, yield and water use efficiency (WUE) of cotton, an experiment was carried out as a factorial split-plot based on a randomized complete block design with three replications in the research farm of Islamic Azad University of Birjand, Iran in 2016. Three irrigation levels (40, 70 and 100 percent of water requirement or PWR) were as the main plot and the combination of two mycorrhiza levels (non- application and application) and two humic acid levels (0 and 10 L. ha-1) were considered as sub-plot. The results showed that mycorrhiza application in conditions of supplying 100 and 70 PWR for the plant significantly increased the chlorophyll index, stomatal conductance, number of boll per m2 and yields of cotton, but the highest increase in these traits was observed in conditions of supplying 70 PWR. Also, the highest WUE in 70 PWR and application of mycorrhiza treatment was obtained.Generally, mycorrhiza application more effectively than the application of humic acid improved physiological traits, yield and WUE of cotton.The results showed that considering the WUE and economic yield of cotton, supplying 70 PWR and mycorrhiza application for this plant in Birjand can be considered.
Seyyed Gholamreza Moosavi
Abstract
In order to study the effect of methanol and humic acid on physiological traits, yield and water use efficiency in plant of chicory under drought stress conditions, a split factorial experiment based on randomized complete block design with three replications in a field of Islamic Azad University, Birjand ...
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In order to study the effect of methanol and humic acid on physiological traits, yield and water use efficiency in plant of chicory under drought stress conditions, a split factorial experiment based on randomized complete block design with three replications in a field of Islamic Azad University, Birjand Branch in year of 2015. Irrigation at three levels (irrigation after 70, 140 and 210 mm cumulative evaporation from the evaporation pan) as the main factor and methanol spray at two levels (zero and 21 percentage volume) and humic acid with two levels (zero and 10 L ha-1 ) were as sub factors. The studied traits were chlorophyll meter, stomatal conductance, leaf relative water content, dry yields of root, stem and leaf dry, dry yield of total, root to stem and leaf ratio, water use efficiency of root, stem and leaf and total. The results showed that water deficit stress reduced all physiological and yield traits (except root to stem and leaf ratio) and increased water use efficiency. Application of methanol increased all of the traits (except yield and water use efficiency of root). Application of 10 L ha-1 humic acid increased all the traits (except for the ratio of root to air organs). In general, based on the results of this study, irrigation treatment after 140 mm evaporation from the pan and spraying methanol with 21 percentage volume and humic acid at 10 liters per hectare can be used to achieve yield acceptable for the Chicory plant in the Birjand region.