Seyed MohammadReza Ehteshami; Iman Janzamin; Mahdi Ramezani; Kazem Khavazi; Behnam Zand
Abstract
In order to investigate the role of Bacillus cogulans on yield of two forage corn cultivars, an experiment carried out at Agricultural Research Center of Tehran Province during 2009-2010. The experiment design consisted of three randomized complete blocks in a factorial arrangement. Investigated treatments ...
Read More
In order to investigate the role of Bacillus cogulans on yield of two forage corn cultivars, an experiment carried out at Agricultural Research Center of Tehran Province during 2009-2010. The experiment design consisted of three randomized complete blocks in a factorial arrangement. Investigated treatments consisted of the kind of phosphorus and cultivar. The phosphorus factor included of the application of triple super phosphate fertilizer and without seed inoculation, without fertilizer and without seed inoculation (control), seed inoculation and 100% P recommended, seed inoculation and 75% P recommended, seed inoculation and 50% P recommended, seed inoculation without fertilizer and cultivar factor included of S. C. 704 and 647. The application of 75% fertilizer and seed inoculation had the highest amount in the most of investigated characteristics. As regards forage quality, seed inoculation with %75 fertilizer showed the highest dry matter digestibility, crude protein and Water Soluble Carbohydrates, too. The present finding showed that phosphate-solubilizing microorganisms can improve crop yield.
Mehdi Zarrabi; Iraj Allah dadi; Gholam Abbas Akbari; Hamid Iran najad; Gholam Ali Akbari
Volume 12, Issue 2 , November 2010, , Pages 37-50
Abstract
To study the seprate and combined effects of phosphorus fertilizer, Phosphate-solubilizing bacteria and mycorrhizal fungus on reducing drought stress damages of grain corn (SC704) during its vegetative stages under field conditions, an experiment was conducted as split plot based on RCBD with three replications ...
Read More
To study the seprate and combined effects of phosphorus fertilizer, Phosphate-solubilizing bacteria and mycorrhizal fungus on reducing drought stress damages of grain corn (SC704) during its vegetative stages under field conditions, an experiment was conducted as split plot based on RCBD with three replications at College of Abouraihan, University of Tehran in 2009. Experimental factors were drought stress as main-plot (irrigation after 50 as control, 100 and 150 mm evaporation from pan class A) and fertilizer plus biofertilizer compounds as sub-plots. Drought stress began after seedling stage. Analysis of variance showed that drought stress significantly affected most of investigated traits such as number of row/ ear, number of kernel/ row, ear weight, 1000kernel weight and grain yield. All the measured traits in compounds phosphate-solubilizing bacteria, mycorrhiza fungies and triple super phosphate treatment were higher than other treatments under water deficit stress conditions. Frthermore, grain yield in triple super phosphate treat under severe water deficit stress conditions (1.81 ton/ha) were significantly less than normal irrigation (8.38 ton/ha) and low stress conditions (4.98 ton/ha). According to this experiment, seed inoculation with phosphate-solubilizing bacteria, mycorrhiza fungies and triple super phosphate compounds affected grain yield and harvest index significantly. This experiment showed that phosphate-solubilizing microorganisms can positively interact in promoting plant growth as well as in P uptake in maize plant, leading to improve plant tolerance under water deficit stress conditions.