Document Type : Research Paper

Authors

1 Assisstant professor of Soil and Water Research Department,Karaj Agricultural and Natural Resources Research and Education Center, AREEO, Tehran, Iran.

2 Assistant Professor, Soil and Water Research Department, Khouzestan Agricultural and Natural Resources Research and Education Center. Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran.

3 Assistant Professor, Soil and Water Research Department, Lorestan Agricultural Education and Natural Resources. Agricultural Research, Education and Extension Organization (AREEO), Khoramabad, Iran.

Abstract

In order to investigate the effect of irrigation regime and biofertilizers on yield and yield components of irrigated wheat, an experiment was conducted in a split-plot layout based on randomized complete block design with three replications at Sarab Changai research station, Khoramabad, during 2014-2015 crop year. Irrigation intervals were in two levels including 75 and 150 mm evaporation from A class evaporation pan were allocated to main plots and biological fertilizers were in four levels including Azotobacter, Micorhiza, Azotobacter + Micorhiza and blank (No fertilizer use) were allocated to sub plots. The results showed that the effect of Irrigation intervals, biological fertilizer and their interaction effects on determined characteristics are significant. 75 mm evaporation from A class evaporation pan was superior than the 150 mm evaporation in all traits. In 75 mm evaporation spike length (7%), spike weight (7.7%), grain number in spike(6.7%), Weight of one thousand grains (7.3%), grain yield(7.1%), biological yield(7.4%) were higher than 150 mm evaporation. Azotobacter + Micorhiza fertilizer treatment was superior to other fertilizer treatments. So that In this treatment the spike length was 28.6%, spike weight 48.3%, number of seeds per spike 56.9%, 1000 grain weight 39.8%, grain yield 54.4%, biological yield 51.3% and water use efficiency 55.7% were increased than blank.

Keywords

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