Maryam Kosravi; Saeed Rizi; Rahim Barzegar; Gholam Reza Rabiei
Abstract
AbstractIn order to evaluate the effect of vermicompost and humic acid on quantitative and qualitative traits of sod turf, a factorial experiment based on completely randomized design with three replications was established in research farm in Shahrekord University. Treatments were vermicompost (zero, ...
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AbstractIn order to evaluate the effect of vermicompost and humic acid on quantitative and qualitative traits of sod turf, a factorial experiment based on completely randomized design with three replications was established in research farm in Shahrekord University. Treatments were vermicompost (zero, 5, 10 and 15 v/v percent) and humic acid (zero, 150 and 250 g/m2), respectively. Some traits such as shoot nitrogen and phosphorus content, shoot height, shoot dry and wet weight, total root length, root fresh and dry weight and root dry weight were evaluated. The results showed that the application of vermicompost and humic acid had a positive significant effect on shoot dry weight, sod root dry weight, total dry weight of roots, fresh weight of root, shoot nitrogen and phosphorous content compared to control. The vermicompost in 15% v/v and humic acid in 150 g/m2 treatments had the most positive effect on measured traits and increased nitrogen (25.4 percent), phosphorous (39.6 percent) content, shoot dry weight (49.7 percent), root weight (83.3 percent), total root dry weight (215 percent) and sod root dry weight (204 percent). In this research application of vermicompost and humic acid increased uptake of nitrogen and phosphorus and it increased the sod quality.
mohammad shahverdi; bahram Mirshekari; Hadi Asadi Rahmani; varahram rashidi; mohammad reza ardakani
Abstract
Towards Low Input Sustainable Agriculture (LISA), decreased chemical fertilizers and increased of forage yield (quality and quantity) this study was carried out in the experimental field of Boroujerd Agricultural Research Station (Lorestan province, Iran) in 2011. Two factorial experiments (RCBD) with ...
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Towards Low Input Sustainable Agriculture (LISA), decreased chemical fertilizers and increased of forage yield (quality and quantity) this study was carried out in the experimental field of Boroujerd Agricultural Research Station (Lorestan province, Iran) in 2011. Two factorial experiments (RCBD) with three replications have been studied. Experimental treatments including four levels of chemical fertilizers: (nitrogen and phosphorus) F0 = N0 + P0, F1 = N25 (25k/h Urea 46 percent nitrogen) + P50 (50 k/h super phosphate triple 46 percent P2O5), F2 = N50 + P100 and F3 = N75 + P150. The biological fertilizers including: control, PGPR, native rhizobium and co-inoculation. Results showed that the location had significant effect on green yield, height, regrow rate and on CP and ADF. Parameters were higher in location two than that of location 1. The CP, DMD and height were not significant under chemical and biological treatments. The highest green yield (76.16 t/ha) was observed using and native at the highest rate of chemical fertilizers (B2F4 and B3F4). The efficiency of F2B in comparison to F3B0 treatments increased green yield (0.33 percent), Crud Protein (2.6 percent), chlorophyll content (1.9 percent), regrow rate (4.69 percent), ash (3.97 percent) and decreased CF (-0.15 percent). CP correlated (r = -0.35) and negatively correlated (r = -0.73) with ADF and CF, respectively. It seems that application of reduced chemical fertilizers integrated with biological fertilizers (especially native rhizobium) can positively affect on yield as well as forage quality and led to decrease of chemical fertilizers.
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 ...
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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.