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Foliar Micro-nutrition is the application of micronutrients to plants by spraying directly onto their leaves. Although it is not economical to spray macronutrients and micronutrients through foliar spraying, researchers prefer soil application for macronutrients and foliar applications of micronutrients. Several researches have demonstrated that the method which is used to deliver the required micronutrient in appropriate concentration to improve nutrient status along with increased yield and quality potential are adapted by combining applications of FeSO4 at a dose of 0.2%, Calcium nitrate at 0.2%, Boron at 0.1% and ZnSO4 at 0.2% has revealed a 51% increase as compared to control in potato. Application of ZnSO4 (0.4%) and ZnSO4 (0.6%) provides significant impact on growth and yield characteristic of Chilli; Zinc Sulfate (0.5%) and Borax (0.5%) also shows better result on the number of fruits per plant, fruit length, fruit diameter and yield per plant in Eggplant. Applying ZnSO4 (0.5%) shows better results on plant height, weight of head and yield of head in cabbage cultivations. Combined application of Boron (100 ppm) + Molybdenum (50 ppm) along with 60 kg/fed of Nitrogen. The results showed increased 38.02% on curd yield of cauliflower over control. A study reveals that application of (0.5%) Zn+ (0.1%) B along with 75 kg/ha of potassium in combination showed 31.73% increases yield of watermelon. Application of boron at 0.25% and zinc 0.5% showed a 31.17% increase in the total onion yield. The combined application of MgSO4 (0.5%), MnSO4 (0.5%), FeSO4 (0.5%) and ZnSO4 (0.5%) has increased yield of okra 31.8% over control. In general this critical review lays an emphasis from the review point of that micronutrients have been found to show satisfactory results than control conditions and has an immense potential in vegetable production to increase yield attributes.

A field experiment was carried out during the Kharif, 2016 at Regional Agricultural Research Station, Maruteru to study the Response of applied neem coated urea (NCU) on nutrient uptake and nitrogen use efficiency of rice (Oryza sativa L) in low land rice ecosystem of Godavari delta, West Godavari district of Andhra Pradesh. The experiment was laid out in a Randomized block design with three replications and eight treatments namely i.e. 100 % PU (3 equal splits as basal, tillering and PI stage), 75 % NCU (3 equal splits splits as basal, tillering and PI stage), 100 % NCU (3 equal splits as basal, tillering and PI stage), 125 % NCU (3 equal splits splits as basal, tillering and PI stage), 100 % NCU (as basal), 100 % NCU (2 splits as 50 % basal and 50% max. tillering stage) 100 % NCU (2 splits 75% as basal and 25% at maximum tillering stage) and Control (No P60 K40). K e y w o r d sNitrogen use efficiency, Neem coated urea and Rice yields

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By 2050, the world population is expected to reach nine billion, so doubling the production of food in order to meet human daily needs will be a great challenge for the global agricultural system. Soil is the most complex natural entity with broad range of microbial biomass; however the soil's natural fertility gradually decreases to the use of synthetic chemicals, fertilizers and pesticides. Global food production has therefore declined, and its production needs to be boosted in a sustainable way in order to introduce the idea of biofertilizer. A significant part of Integrated Nutrient Management is biofertilizer. In soil fertility and sustainability the potential biofertilizers play a key role. The three main forms of biofertilizers used are Rhizobium, Arbuscular Mycorrhizal Fungi and Azolla. These are organic substances which use different strains of specific micro-organisms in order to increase soil fertility and boost agricultural productivity in a sustainable manner for the future.