Guerrero Zambrano,Ronnye Alexander(2023)EFECTO DEL ESTRÉS HÍDRICO EN EL CULTIVO DE MAÍZ (Zea mays L.).Quevedo.UTEQ.58p.

This study examined how deficit irrigation impacts the growth, yield, and water efficiency of maize (Zea mays L.), especially relevant given that 70% of the world's water is consumed in agriculture. A randomized complete block design was used with four irrigation treatments during the dry season (August-November): T1 (40% ETc), T2 (60% ETc), T3 (80% ETc) and T4 (100% ETc).). No significant differences were found in the number of leaves per plant. The water deficit did not impact the height of the plant in the first 45 days, but it did at 60 days, with T4 being the highest (1.98 m), followed by T2 (1.72 m). Likewise, the diameter of the stem did not show significant changes in the first 30 days, but it did at 45 and 60 days, standing out T4 (17.10 mm) followed by T2 (15 mm). In yield, T4 was superior (16686.67 tn/ha), followed by T3 (14756.67 tn/ha). However, when balancing water consumption and development, T4 registered a reduction of 13.14% in height and 12.28% in stem diameter compared to T2, but with a water saving of 40%. The yield decreased by 11.57% with a water saving of 20% compared to T3. Regarding the efficient use of water, it was determined that T1 obtained the best results, converting 14.04 kg/m³ while T4 obtained the lowest values with 7.19/kg/m³. In conclusion, despite a better yield with T4, deficit irrigation proved to be efficient in water use, with only moderate reductions in crop development and yield.

• 主要作者: Guerrero Zambrano, Ronnye Alexander (author)
• 格式: bachelorThesis
• 語言: spa
• 出版: 2023
• 主題: Déficit, ríego, consumo.tallo
• 在線閱讀: https://repositorio.uteq.edu.ec/handle/43000/7995