PEDOLOGICAL DROUGHT INFLUENCE ON MAIZE YIELD QUANTITY AND QUALITYIN THE CRISURILOR PLAIN
Journal Title: Natural Resources and Sustainable Development - Year 2013, Vol 3, Issue 1
Abstract
The paper is based on the research carried out in an experiment placed on the preluvosoil from Agricultural Research and Development Station Oradea, during 2011-2012 in the following variants: V1= Irrigated, without irrigation suspending; V2= Irrigated, irrigation suspending in May; V3 = Irrigated, irrigation suspending in June; V4= Irrigated, irrigation suspending in July; V5= Irrigated, irrigation suspending in August; V6= Unirrigated. The hybrid used: Fundulea 376. In the variant with optimum irrigation, water reserve on 0-75 cm depth was maintained between easily available water content and field capacity. Pedological drought was determined every year in the variant with unirrigated maize. The number of days with pedological drought was of 20 days in 2010, 93 days in 2011 and 75 days in 2012. Soil water reserve decreased bellow wilting point, too; the number of days with strong pedological drought were of 20 days in 2011 and 11 days in 2012. In the unirrigated maize, the biggest number of days with pedological drought and the smallest yield protein content and protein yield were registered. The links between pedological drought and yield, between pedological drought and protein content are very significant statistically and they have an inverse form. Irrigation suspending in different months of the maize irrigation season determined the pedological drought appearance and the yield and protein yield losses in comparison with the variant without irrigation suspending; the protein content of the maize grains are smaller than the value registered in the variant without irrigation suspending.
Authors and Affiliations
Cristian Domuța
Keywords
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