Determination of flooding time of corn (Zea mays L.) cultivated in Ferrallitic Red soil
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Abstract
Knowing flooding time of crops reveals the time that the plant can withstand waterlogging without suffering any effect on its yield. The work was developed in the "Pulido" Scientific and Technical Base Unit, located in Alquízar municipality, Artemisa province, with the aim of determining the time of flooding in the corn crop. Tuzón variety was used and flooding processes were carried out during the flowering stage of the crop. Planting was carried out in pots, with a Ferrallitic Red soil. The experimental design applied was a randomized block design, the treatments consisted of flooding the pots for 24, 48, 96 and 144 hours with a control without flooding. The results revealed that, from the flooding beginning, there was a reduction in relative grain yield of 0.31 % for each hour of flooding and a loss of approximately 50 % was reached with 70 hours of excess humidity. Plants showed losses in cob weight, kernel weight and a decrease in cob length when subjected to flooding from 24 hours to 144 hours. The maize crop showed a minimum threshold (0.0), so the reduction in yield and its components was recorded immediately at the onset of flooding.
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