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|Title:||Kaipad rice farming in North Kerala-An indigenous saline resistant organic farming system|
Traditional and released saline tolerant rice cultivars
|Series/Report no.:||Int. Cl.8: IPC Int.Cl.8: A01G|
|Abstract:||Rice, the most important cereal and staple carbohydrate source of Asia is cultivated in diverse ecological conditions and many such agro-ecosystems are fragile and critically endangered. Some such systems are very special in terms of their ecological singularity and subsistence value and their conservation would invariably add to availability of food and protection of genetic diversity. The present study is an investigation in to a very unique rice farming system in Kerala state of India in which rice is cultivated in the first crop season in saline wetlands that are subjected to regular tidal action, taking advantage of the heavy South west monsoon which results in flushing out the salt content from the farmland. In Central Kerala the system is known as pokkali and in North Kerala as kaipad. Kaipad system of rice farming has been studied presently, based on specialities of the area, soil and water conditions and the varieties used. The study showed that soil salinity of the area in summer varied from 10.9 mmhos/cm to 19.9 mmhos/cm and water salinity in summer varied from 35.9 mmhos/cm to 49.9 mmhos/cm and in the month of July in the middle of the South west monsoon it varied from 1.6 mmhos/cm to 4.7 mmhos/cm. Soil pH during April ranged from 4.9 to 6.6. Water pH ranged between 6.71 and 7.45 in April and in July it ranged from 6.15 to 6.71. Availability of NPK in the soil ranged as follows in April: N: 1.12% to 2.0%; P: 7.2 kg/ha to 34.2 kg/ha; K: 480 kg/ha. The major rice varieties cultivated in the area are the native cultivars Kuthiru, Orkazhama, Kuttusan, Orthadiyan and Chovverian among which Kuthiru is the most popular and the best performing.|
|ISSN:||0975-1068 (Online); 0972-5938 (Print)|
|Appears in Collections:||IJTK Vol.11(1) [January 2012]|
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