The LCC had been jointly developed by International Rice Research Institute (IRRI) and Philippines Rice Research Institute (PhilRice) from a Japanese prototype, for the purpose of measuring the required quantity of nitrogen to be applied in Rice field and thereby to get a maximum productivity. The LCC is also suitable for maize & wheat providing farmers with a good diagnostic tool for detecting N deficiency.The LCCs relevant to use for Sugarcane, Potato, Cotton, Cassava,Vegetables,Mustard,Oilpalm etc. are under Research and Development in order to maximize the yield of these crops.
The leaf color chart (LCC) is an innovative cost effective tool for real-time or crop-need-based N management in Rice, Maize and Wheat. LCC is a visual and subjective indicator of plant nitrogen deficiency and is an inexpensive, easy to use and simple alternative to chlorophyll meter /SPAD meter (soil plant analysis development) .It measures leaf color intensity that is related to leaf N status. LCC is an ideal tool to optimize N use in Rice/Maize/Wheat at high yield levels, irrespective of the source of N applied, viz.,organic manure, biologically fixed N, or chemical fertilizers. Thus, it is an eco-friendly tool in the hands of farmers.
Leaf Colour Chart (LCC) is an instant, easy and low cost technique for N diagnosis of current crop and N topdressing in crops. LCC an intelligent tool will help Rice, Maize & Wheat farmers to visually assess the need for nitrogen and apply the fertilizers. The color panels of the LCC are designed to indicate whether rice, maize, wheat plants are hungry or over-fed by nitrogen fertilizer. By matching the color of the rice, maize, wheat leaf to the color on the LCC, farmers can decide proper time and amount of N fertilizer for application. Leaf Color Chart ensure only need-based optimum use of chemicals in agriculture. Chemical fertilizer particularly urea is having indiscriminately applied to rice, maize and wheat in intrusively cultivated regions. There is an urgent need to rationalize the use of urea and other nitrogenous fertilizer (organic and inorganic) in a way that these are applied as per the need of the crop by using LCC.
The use of LCC in Punjab state in India, recommended by the Punjab Agricultural University for maize, rice and wheat crops, can result in saving of Rs 170 crore (38 Million USD) annually as well as the environment.
With the use of LCC in irrigated rice, let us assume a potential saving of 23 kg N or 50 kg urea per ha per season. The calculated annual savings of urea are provided in the table below for selected Asian countries (except China). The estimated annual saving of urea is 834,000 tons for India if 50% of farmers use LCC in the irrigated rice area of 22.3 million ha.
Other countries that could save substantial amounts of urea when they adopt LCC are Indonesia, Vietnam, Bangladesh and the Philippines. For the whole of Asia, except China, the potential annual saving of urea is estimated at 1, 2, 3 and 4 million tons, respectively, with 25, 50, 75 and 100% of farmers using LCC in irrigated rice.
|Country||Irrigated rice area, '000 ha#||Mean number of crops per year||Saving in urea per year*, '000 t|
|25% farmers use LCC||50% farmers use LCC||75% farmers use LCC||100% farmers use LCC|
|Asia (- China)||--||--||999.7||1,999.4||2,999.1||3,998.8|
The Consultative Group on International Agricultural Research (CGIAR) Research Program on Climate Change, Agriculture and Food Security (CCAFS) introduced the model of ”Climate Smart Villages (CSVs)” in Bihar and Haryana India. The idea was to raise awareness among farming communities in South Asia about Leaf Color Chart (LCC) and various technological, institutional and policy-oriented options that have the potential to increase their climatic resilience, adaptation, agricultural productivity and income, while reducing emissions of greenhouse gases.The villages, initially started in South Asia, are now being replicated at other CCAFS regions in East and West Africa.
This important research will help policymakers,farmers and others affected by climate change understand the implications of their decisions when making difficult compromises.
As the use of LCC, leads to the application of optimum and précised quantity of nitrogen to Rice paddy as and when required, there is a considerable reduction in the Green House Gas Emission from Rice fields. In this connection , it is informed that we are supplying LCCs for conducting study on Vietnam Low Carbon Rice Project, being carried out with Environmental Defense Fund (EDF).
System of Rice Intensification (SRI) has included LCC as a listed tool.