Role of Biofertilizer and Chemical Fertilizer for Sustainable Onion (Allium cepa L.) Production

Response of some onion varieties for mineral, bio and nano fertilizers under upper Egypt conditions

“…The increase in plant height under application of 75% NPK + biofertilizer + humic + nano-ZnO revealed that this treatment offered all needs to the plant which reflected in increasing plant growth. Similar results in this respect were reported by ) Devi and Ado, 2005;Sangetha and Singaram, 2007;Ahmed, 2009;El-shaikh et al, 2009 andSingh et al, 2017) who found that the combined treatments of chemical fertilizers with biofertilizers or humic gave a tallest plant, and by DeRosa et al (2010) and Nair et al (2010) who reported that nano nutrients may have properties that are effective to crops, release the nutrients on demand, controlled release of chemicals fertilizers that regulate plant growth and enhance target activity.…”

“…While, no fertilization treatment appeared the lowest means, these results were true in both seasons (Table,10). These results are in harmony with those mentioned by Jayathilake et al (2003), Devi and Ado (2005), El-Shaikh (2005), El-Shaikh (2007) and Singh et al (2017) who reported that the mixtures between bio and mineral fertilization appeared the highest of total yield, El-Shaikh et al (2017) who reported that the treatment (bio + humic+3/4 NPK) gave the best results for total bulbs yield. This may be due to application of biofertilizers and their direct roles in nitrogen fixation, phosphate and potassium solubilization, production of substances like phytohormones and increase in nutrient uptake in addition to the beneficial role of humic acid in raising the quality and productivity of onion plant.…”

“…The highest means of number of leaves/plant were obtained under the treatment of 75% NPK + bio-fertilizer + humic + nano-ZnO, while the lowest means were obtained under no fertilization, in both seasons. Similar findings in this respect were mentioned by El-Desuki, (2004), Sangetha and Singaram (2007) and Singh et al (2017) who found that the combination of biofertilizers or humic with chemical fertilizers have significantly increased most of the growth parameters, and by Seddiqui et al (2015) who revealed that the appropriate elucidation of physiological, biochemical, and molecular mechanism of nanoparticles in plant leads to better plant growth and development. The effect of the interaction between onion variety and fertilization treatments was significant at 90 and 120 days, in both seasons.…”

Studies in Growth and development of Onion crop (Allium cepa L.) cv. N-53 as influenced by integrated nutrient management

“…The polar diameter was measured from the junction of root plate to the top of the bulb from the same, which was used for recording neck thickness and mean polar diameter was worked out with the help of vernier caliper. [9] in onion and D.N.…”

Production potential of Onion crop (Allium cepa L.) cv. N-53 as influenced by integrated nutrient management

“…Therefore, the experiment was conducted for sustainable production of onion with combine use of biofertilizers and chemical fertilizers. (Singh et al 2017) [9] . Therefore, considering the need of time and as onion is the most important vegetable of our daily diet, it is highly essential to generate the information about the effect of different organic inorganic and biofertilizres on growth, yield and quality of onion.…”