Paper Details

Effect of nano and biological fertilizers on carbohydrate and chlorophyll content of forage sorghum (Speed feed hybrid)

Saleh Mir, Alireza Sirousmehr, Ebrahim Shirmohammadi

DOI: https://dx.doi.org/10.12692/ijb/6.4.157-164

Int. J. Biosci. 6(4), 157-164. February, 2015. (PDF)

Abstract:

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 nano-fertilizer 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.