Aiming to investigate the effect of Rhizobium Leguminosarum inoculum, rice hulls, and urea fertilizer on the availability of phosphorous and potassium regarding the growth and yield traits of broad bean plant (Vicia faba L.), a field trial was carried out during the autumn agricultural season 2021 in Al-Daghara district, 17 km north of the center of Al-Diwaniyah Governorate-Iraq. Two levels of Rhizobium Leguminosarum (R0) the control, and (R1) bacterial inoculation, three levels of organic fertilizer (rice hulls) S0, S3, and S5 t/ha-1, and three levels of urea fertilizer (U0, U50, and U75) kg/ha-1 and their overlap, were used and studied. The results of the interaction treatment (bacterial inoculum + rice hulls (5 t/ha-1) + urea fertilizer (75 t/ha-1)) yielded the highest significant increase in the traits of root-knot number, root-knot weight, potassium concentration, phosphorous concentration) compared to the control, 23,851 knots/ plant, 0.550 / 122.6 kg.soil-1 and 23.812 kg/soil-1, respectively.
The effect of fungal fertilizers with isolates of T. harzianum and G. mosseae and levels of phosphate rock on NPK content in the barley plant was investigated. A field trial was conducted on clay loamy soil to produce a variety of barley crops named (Samir 1) during the autumn agricultural season in 2021 in the Al-Qadisiyah Governorate. The factorial experiment was designed according to a Randomized Complete Block Design (RCBD) with three replications. The factors of the experiment included two levels of T. harzianum inoculum (T0, control and T1, fungal inoculation), two levels of G. mosseae inoculum (G0, control and G1 fungal inoculation), and four levels of phosphate rock (P0, P1, P2, and P3) with an amount (0,1000,1500, and 2000) t/ha-1. The results present that the interaction treatment (G. mosseae + T. harzianum and phosphate rock of 1000 t/ha-1) resulted in a significant increase in the content of nitrogen, phosphate, and potassium (NPK) in the plant 1.977, 0.437, and 2.603 %, respectively, compared to the control.
A field experiment was carried out in one of the fields located in Al Muthanna Governorate / Samawa district / Mohamed Ali region in sedimentary soil with Silt Clay in the autumn season of 2018 To study the effect of Azotobacter chroococcum, Azospirillum brasilense, poultry residue in ammonium concentration and growth of white maize(Plant height, dry matter weight, available soil content of ammonium) The experiment was designed using a three-replicated (R.C.B.D) experiment. Experimental factors included two levels of Azospirillum brasilense (infection and without infection) and two levels of Azotobacter chroococcum (infection and no infection) and three levels of poultry waste (0.3, 5)T.ha -1 Respectively, and sorghum bicolor (L.) Moench was cultured on 23/7/2018. The results of the field experiment can be summarized as follows: 1. A baselines injection was given a significant increase in plant length, dry matter content and the soil content of ammonium concentration at the time of flowering Reaching 204.08 cm, 1.784 T.h -1 , 77.48 mg NH -4 kg -1 soil respectively compared to the control treatment. 2. A single bacterial infection with A. chroococcum gave a significant increase in all the above traits, reaching204.59 cm, 1.785 T.ha -1 ,77.73 (mg NH 4kg -1 soil), respectively, compared with control treatment. 3. The level of 5 t .h -1 of the poultry residues increased significantly in all the above qualities, reaching 206.93 cm and 1.88 T.ha-1 , 78.78 mg NH 4kg -1 soil, respectively, compared to control treatment. 4. Interval treatment (A.brasilense + 5 T.h -1 poultry waste) significantly increased dry matter content and the soil content of ammonium during the period of flowering amounted to 2.00 t.h-1, 80.38 mg NH 4kg -1 soil, respectively compared with the control treatment. 5. Treatment of interaction (A.chroococcum + 5 T. h -1 Poultry residues) significant increase in the soil content of ammonium during the period of flowering amounted to 81.66 (mg NH 4-Kg -1 soil) compared to control treatment. 6. The treatment was of interaction duple (A.brasilense + A.chroococcum) gave a significant increase in the dry matter yield of 1.89 t.ha-1 . 7. the treatment of the tripal interaction was given significant increase ( Abrasilense + A.chroococcum + 5 t. h-1 Poultry residues )significant increase in all of the above characteristics Reaching 216.60 cm and 2.14 tons., 83.68 (mg NH 4 kg -1 soil), respectively, compared to the control treatment, Which gave a lower set.
A field experiment was conducted in the agricultural season (2016 -2017) in one of the fields of college of Agriculture -University of AL-qadisiyah on mays L. Zea to study the interrelated effect of both the acid and Azotobacter and Azospirillum. The experiment was applied according to RCBD design and three replicates. The treatment included 12 treatments resulting from the treatment of Control and Azotobacter , Azospirillum , organic fertilizer, The most important results reached: 1. Azotobacter + Azospirillum + organic fertilizer have the superior to the vegetative growth characteristics of mays by giving the highest average (number of leaves, dry weight of leaves, dry weight of root total) (24.67, 17.5 g, 8.17) g respectively, except for treatment (Azospirillum + organic fertilizer) was superior in plant height 92.0 cm. 2. Azotobacter + Azospirillum + organic fertilizer has the highest values for the chemical grade of mays in (potassium, calcium, sodium, respectively (0.243, 2.60 and 0.077) %.
A field experiment was conducted in the agricultural season (2016 - 2017) in one of the fields of college of Agriculture - University of AL-qadisiyah on mays L. Zea to study the interrelated effect of both the acid and Azotobacter and Azospirillum. The experiment was applied according to RCBD design and three replicates. The treatment included 12 treatments resulting from the treatment of Control and Azotobacter , Azospirillum , organic fertilizer, The most important results reached:1. Azotobacter + Azospirillum + organic fertilizer have the superior to the vegetative growth characteristics of mays by giving the highest average (number of leaves, dry weight of leaves, dry weight of root total) (24.67, 17.5 g, 8.17) g respectively, except for treatment (Azospirillum + organic fertilizer) was superior in plant height 92.0 cm.2. Azotobacter + Azospirillum + organic fertilizer has the highest values for the chemical grade of mays in (potassium, calcium, sodium, respectively (0.243, 2.60 and 0.077) %.
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