Saleh Mir, Alireza Sirousmehr, Ebrahim Shirmohammadi
Department of Agronomy and Plant breeding, Faculty of Agriculture, University of Zabol, Zabol, Iran
Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Zabol, Zabol, Iran
Department of Soil science, Faculty of Water and Soil Engineering, University of Zabol, Zabol, Iran
Key words: Biofertilizer, Iron, Manure, Potassium, Sorghum Bicolor.
Integrated nutrient management strategies involving chemical and biologic fertilizer is a real challenge to stop using the high rates of agrochemicals and to enhance sustainability of crop production. A factorial greenhouse experiment was arranged based on completely block design in three replications. First factor included in two level: manure fertilizer and none manure fertilizers application and second factor in four chemical fertilizers levels : control (no application of chelate nano-fertilizers),iron chelate nano-fertilizer , potassium chelate nanofertilizer and combined iron and potassium chelate fertilizers and third factor in four levels: control (no biofertilizer application), Azetobarvar 1 (Azetobacter in 108-107CFU/gr ), Phosphatebarvar 2 (Pseudomonas putida, Strain P13+ Pantoea agglomerans, Strain P5) and combined Azetobarvar 1 and Phosphatebarvar 2. Results showed that manure and nano fertiizers had significant effect on chlorophyll a, b, carotenoid (p≤0.01). Biofertilizer also affect Chlorophyll b, carotenoid (p≤0.01) and carbohydrate (p≤0.05). According to results, the highest chlorophyll a (1.59 mg/g), chlorophyll b (5.31 mg/g), carotenoid (2.24 mg/g) and carbohydrate (3.24 mg/g) were achieved from combine biofertilizers (azetobarvar 1+ phosphorbarvar 2) + chelated nano fertilizers (Fe+k) treatments application. This study showed that these types of fertilizers could promote studied values in sorghum plant.
Get the original articles: http://www.innspub.net/volume-6-number-4-february-2015-ijb/