Marine microalgal extracts on cultivable crops as a considerable bio-fertilizer: A Review
Around the globe, all countries whether developing or developed depend on agriculture. Nowadays due to advances in science and agricultural technology, the usage of chemical fertilizers, pesticides and genetically modified crops is increasing day by day to meet the demand of the rising population. This looks helpful to meet our demand but this is a great threat for the future generation as the water and food will be more toxic due to accumulation of pesticides and chemical fertilizers which in turn reduces the soil fertility and contaminate the ground water. Due to this condition, the food web is getting totally collapsed. Because of realization of these problems, people are shifting to organic farming. Current researchers are focusing on terrestrial organic sources for agro production but there are immense sources in the wide marine environment. The marine sources will play a substantial role on agricultural development in the future. Microalgae are the best, as they are cheap, renewable source, easily available and are cultural organisms. Moreover, microalgae contain all the essential nutrients needed for plant growth. The majorities of microalgae are capable to fix the atmospheric nitrogen and are effectively used as bio-fertilizers. This review focuses on the broad overview of bio-fertilizers with special reference on marine derived microalgal bio-fertilizers and its role in increasing crop production by altering various physiochemical parameters of diversified agricultural crops.
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