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FAO CROPWAT Model-Based Irrigation Requirements for Coconut to Improve Crop and Water Productivity in Kerala, India
Centre for Water Resources Development and Management (CWRDM), Kerala, India.
Centre for Water Resources Development and Management (CWRDM), Kerala, India.
Centre for Water Resources Development and Management (CWRDM), Kerala, India.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-6790-2653
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2019 (English)In: Sustainability, ISSN 2071-1050, E-ISSN 2071-1050, Vol. 11, no 18, article id 5132Article in journal (Refereed) Published
Abstract [en]

The irrigation requirements for coconut in Kerala are general in nature. This study determined the irrigation requirements for coconut, using CROPWAT based on agro-ecological zones (AEZs) for proposing the recommendations. The irrigation recommendations are generated based on the climatic, soil, and crop characteristics. The results showed that the irrigation requirements varied with the locations. Overall, for the state of Kerala, the irrigation requirements varied from 350 to 900 L of water per coconut palm, with the irrigation intervals ranging from three to nine days based on the AEZs. Moreover, this study also confirmed the variation of the water requirements observed within the districts. The quantity of water required per palm varied between 115 to 200 liters per day (LPD) per palm, which is lower than the existing recommendations of 175 to 300 LPD per palm. The proposed irrigation requirements appraised with the presently followed recommendations of the Kerala state, and its advantages discussed for improving the crop and water productivity. In nutshell, if the current recommendation is adopted, 30% of the water used for irrigation can be saved, as well as leading to an improvement in crop production.

Place, publisher, year, edition, pages
Switzerland: MDPI, 2019. Vol. 11, no 18, article id 5132
Keywords [en]
water requirement, irrigation scheduling, water saving, agro-ecological zone
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-76065DOI: 10.3390/su11185132Scopus ID: 2-s2.0-85072646789OAI: oai:DiVA.org:ltu-76065DiVA, id: diva2:1352702
Note

Validerad;2019;Nivå 2;2019-09-23 (johcin)

Available from: 2019-09-19 Created: 2019-09-19 Last updated: 2019-10-02Bibliographically approved

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