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KISSAN Launches Online Fertiliser Recommendation System (FRS)

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KISSAN has conceptualized and implemented a dynamic module called Fertiliser Recommendation System (FRS), a new online recommendation system for the farmers. This is the first time in the country such web based fertilizer recommendation system has been developed in close consultation with the department officials and yet another achievement of Kissan Kerala project by using and integrating appropriate IT tools and applications for the benefit of farming community.

This FRS would provide recommendation on fertilizers, based on the soil test reports provided to the farmers by various soil testing laboratories across the state. By using the farmer/user has to provide the basic details, details of the soil analysis report and also the preference of crop. Using these data the system will automatically generate a detailed recommendation for the integrated management of farms by providing most accurate information on how to provide balanced nutrition. The report will contain such details as the soil amendments to be made, organic manures top be used and also the quantity as well as the frequency of use of chemical fertilizers.

The system will also automatically create an archive of the recommendations, which has been provided to the farmers. This enables scientists and research personnel to conduct various analysis based on the soil history for better farm management and to provide better advisory services.

To know more about FRS and access please visit

http://www.kissankerala.net/kissan/FRS/Main.jsp


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Chemical Fertilizers

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Choice of a fertiliser depends on unit cost of nutrient present in it and its agronomic efficiency under a given situation. Fertiliser is a valuable input and measures should be taken to reduce its losses and to increase its uptake and utilisation by the crop. Selecting a situation-specific fertilizer and choosing the time and method of application according to crop demand would minimize losses and increase its efficiency.

Nitrogenous fertilisers

Most crop plants recover only 25-35% of the nitrogen applied as fertilizers. Losses occur by ammonia volatilisation, denitrification, immobilization to organic forms, leaching and run off. Utmost care should be bestowed in selecting the type of fertiliser as well as the timing and method of application.

Choice of the nitrogen fertilizer

1. In submerged rice soil, ammoniacal and ammonia-producing fertilizers like urea are most suitable since ammonia is the most stable form of nitrogen under such conditions.

2. In highly acidic upland soils, urea is preferred to ammonium sulphate as the former is less acid forming.

3. For acidic upland soils, ammoniacal fertilizers are most suitable during rainy season since ammonium is adsorbed on soil particles and hence leaching losses are reduced. Adsorbed ammonium is gradually released for nitrification and thus becomes available to crops for a longer period.

4. In alkaline upland soils of low rainfall regions, nitrate fertilizers are preferred to ammoniacal fertilisers or urea since ammonia may be lost by volatilization under alkaline conditions

Management of nitrogenous fertilisers

1. Almost all the nitrogenous fertilizers are highly amenable to losses and since most of the crops require nitrogen during the entire growth period, split application is necessary to ensure maximum utilization by crops.

2. More number of splits may be given for long duration crops as well as perennial crops.

3. Nitrogen losses from fertilisers are more in coarse textured soils with low cation exchange capacity (CEC) than in fine textured soils. Hence more number of splits is necessary to reduce loss of fertilizer nitrogen from sandy and other light soils.

4. For medium duration rice varieties, nitrogenous fertilizers should be given in three splits, as basal, at maximum tillering and at panicle initiation stage.

5. In coarse textured sandy or loamy soils, the entire dose of nitrogenous fertilizers may be applied in 3-4 splits at different stages of growth of rice crop.

6. In double-cropped wetlands, 50% of N requirement of the first crop may be applied in the organic form.

7. As far as possible, liming should be done one or two weeks prior to the application of ammoniacal or ammonia forming fertilizer like urea since ammonia is likely to be lost by volatilization if applied along with lime

8. Almost 70% of N in urea applied by broadcast to flooded soil is lost by volatilization, immobilization and by denitrification

9. In areas where split application of nitrogen is not feasible due to water stagnation after planting/sowing, full dose of nitrogen as basal may be given in the form of neem coated or coal tar coated urea.


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