Water, Nutrients, Radiation and CO2 Use Efficiency of Bulb Crops: A Review

World’s natural resource will be pressured by population increment that is to achieve high food production through intensive farming. Bulb crops are among largely produced which characterized a shallow root system and underground vertical shoots. They also cool season crops, their growth influenced water, nutrients, radiation carbon-dioxide. Factors determine water use efficiency tillage, stage of the crop, evapotranspiration, irrigation, soil types elevated co 2 . Nutrient bulbs factors like factors, fertilizer plant agronomic consideration, biological consideration climate factors. Nitrogen, phosphorus potassium major consumed nutrients bulbs. Radiation key determinant photosynthesis, photorespiration respiration. Indicators dry matter production, leaf area index specific area, ground cover, interception absorption, maintenance respiration partitioning. Another essential substrate for photosynthesis bulb main temperature light. So as different studies indicated best nutrient, them respective should considered optimized. Keywords: Bulb, Water, Nutrients, Radiation, CO DOI: 10.7176/ALST/90-02 Publication date: November 30 th 2021