PEDOLOGICAL DROUGHT INFLUENCE ON WATER CONSUMPTION, YIELD AND WATER USE EFFICIENCY IN POTATO FROM CRIȘURILOR PLAIN
Journal Title: Natural Resources and Sustainable Development - Year 2016, Vol 6, Issue 1
Abstract
The paper is based on research carried out at the Agricultural Research and Development Station Oradea within a long term experiment which began in 1976 at a site with preluvosoil, in Oradea. The research was conducted between 2014 and 2016, in years very different climatically. Determination of soil moisture every ten days within a depth of 0-75 cm shows that in the case of unirrigated potato the soil water reserve dropped below easily available water content 75 days in 2014, 58 days in 2015 and 27 days in 2016, water reserve dropped below the wilting point. In order to maintain soil water reserve between easily available water content and field capacity within a depth of 0-75 cm, in 2014 the irrigation rate used was 3,700 m3/ha, in 2015 it was 2,800 m3/ha, and in 2016 the irrigation rate was 1,200 m3/ha. As consequence the total water consumption was higher by 41% in 2014, by 43% in 2015 and by 18% in 2016. The irrigation of potato determined a statistically very significant yield gains, with relative differences of 206% in 2014, of 119% in 2015 and of 40% in 2016. The drop of soil water reserve below easily available water content within the watering depth, the influence of irrigation on water consumption and the yield gains obtained in each year of the research show the need of irrigation in potato in the Crişurilor Plain.
Authors and Affiliations
Nicolae Cenușa
Keywords
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