An Android/Web based Application to Estimate Nitrogen Concentration in Rice Crop of Western Odisha

In Rice crop, (Oryza sativa) the Nitrogen & Chlorophyll contents can be estimated by Leaf Color Chart (LCC) for proper prescription about the Fertilizer. Comparing the visual attributes with the LCC is not same always. The accuracy is affected by human color perception. This paper proposes development of a Web/Android based application called "n4riceleaf". This application captures a 2D color image of rice leaf & determines its average color in HEX color code. Then it makes an estimation of N concentration in accordance to the generated HEX color code of the image & the five shade LCC achieving high accuracy. This application runs on all devices irrespective of device & platform i.e. Smartphone, tablet, Laptop etc. which meets a minimum requirement.