Published in Scientific Papers. Series A. Agonomy., Vol. LVI
Written by Cristian Laurentiu DRAGOMIR, Ionel JINGA, Ioana STERE, Ion STERE
This work presents results on an experience from 2010 and 2011, which was organized by randomized block method inthree repetitions, in a field planted with corn hybrids from different germoplasm source and from another FAO group,carried out under irrigation, with irrigation (700 mc/ha) and with 50% reduced irrigation level (350 mc/ha) inDobrogea area at SCDA Valul lui Traian.Throughout Romania, Dobrogea by geographic location, in terms of weather conditions, has the most diverse range ofclimate risks. Dobrogea is located in the interference of polar air masses with the tropical area where very cold airmasses and dry arctic or polar origin, causes temperature decreases, the winds that sweep the snow in winter andsummer masses entering hot air tropical climate that favors summer climate risks (massive heating, prolonged droughtsand heat, aridity, etc.).Although the thermal potential of the area allows corn hybrids from very late group growing, prolonged drought andheat of summer limited their cultivation.Correlation was established between different levels of water supply and production capacity in the three groups ofprecocity to identify most adapted hybrids to adverse conditions (drought and heat) in the area where experience hasbeen mounted.Early hybrids, due to short growing season, have used more water reserve in winter, while medium and especially latehybrids reacted positively with increasing water applied.Analysis of quality components showed an increase in fat content and a decrease in protein and starch to increase soilmoisture levels.A longer growing season is accompanied by an increase starch content and a decrease in fat content and crude protein.
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