Identification and delineation of potential castor growing areas in different Agro-eco sub regions of India
IDENTIFICATION AND DELINEATION OF CASTOR GROWING AREAS IN AGRO-ECO SUB REGIONS
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Authors
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L G K NAIDU
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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S DHARUMARAJAN
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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M LALITHA
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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R VASUNDHARA
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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V RAMAMURTHY
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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G P OBI REDDY
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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R S SINGH
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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B TAILOR
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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RAMESHWAR SINGH
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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U BARUAH
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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M PADMAIAH
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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G SURESH
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
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K S VARAPRASAD
ICAR-National Bureau of Soil Survey and Land Use Planning, Regional Centre, Bangalore-560 024, Karnataka
Keywords:
Castor, Crop growing environment, Land suitability, Length of growing periodAbstract
Castor (Ricinus communis L.) is one of the oldest cultivated crops in the world. Castor oil is having global importance specially in chemical industry because it is the only commercial source of a hydroxylated fatty acid. Castor also hastremendousfuture potential as an industrial oilseed crop because of its high seed oil content, unique fatty acid composition, potentially high oil yields, and ability to be grown under drought and saline conditions. Soils and prevailing climatic conditions across different Agro-Eco Sub Regions (AESR) of India were assessed and matched with crop requirement criteria to identify the potential castor growing areas. Potential castor growing areas comprise favourable soil depth (deep soils) with longer Length of Growing Period (LGP). Among the traditional castor growing areas, AESR 5.2, 7.3, 8.2 and 8.3 have potential to grow castor whereas in non-traditional castor growing areas, AESR6.3, 6.2, 13.1, 15.4 and 17.1 are most potential for expanding castor cultivation. Relative yield and spread index of castor indicated that most of the potential areasidentified in different AESRsfall in zone II and III, need special attention to increase productivity and area expansion programme. Site specific management strategies like selection of suitable variety matching with LGP and proper adoption of nutrient management will overcome the limitations observed in these zones.
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