Lao Olivares, Ceila Paquita

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Lao Olivares, Ceila Paquita
Nombre oficial
Lao Olivares, Ceila Paquita
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Lao Olivares, Ceila P.
Ceila Lao
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Universidad Peruana Unión
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  • Publicacion
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    Tillage Systems Modify the Soil Properties and Cassava Physiology During Drought
    (Multidisciplinary Digital Publishing Institute (MDPI), 2024-12-20)
    Ocaña-Reyes, Jimmy A.
    ;
    Paredes-Espinosa, Richard
    ;
    Quispe-Tomas, Astrid
    ;
    Díaz-Chuquizuta, Henry
    ;
    Ore-Aquino, Zoila L.
    Soils are highly sensitive to the type of tillage practices used, as these practices influence soil properties and affect crops, the environment, and society. However, research on cassava production under different tillage systems during drought conditions in the Peruvian Amazon has not been reported. The objective of this study was to compare soil properties, cassava physiology, and yield under conservation agriculture (CA) and traditional agriculture (TA) practices, with and without mulch, in a water-scarce environment. Soil moisture, earthworm population (Ew), stomatal conductance, leaf area index, and commercial yield under CA were 5.26% (~105.2 m3 ha−1), 83%, 1.2 times, 1.14 times, and 7.3 t ha−1, respectively, higher than under TA. Hydraulic conductivity (Ks) in TA was 2.1 times higher than that in CA. However, Ks, bulk density, and Ew over time showed a gradual recovery under CA. The mulch factor only affected Ew, which was higher without mulch than with mulch. The results indicate that CA practices were superior to TA practices, improving soil properties, cassava physiology, and yield, and, therefore, offer significant benefits in resource conservation and higher production and profitability in a drought-prone environment.
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  • Publicacion
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    Intermittent Rainfed Rice var. INIA 516 LM1: A Sustainable Alternative for the Huallaga River Basin
    (Multidisciplinary Digital Publishing Institute (MDPI), 2025-04-23)
    Flores-Marquez, Ricardo
    ;
    Bahia, Rita De Cássia S.
    ;
    Arevalo Aranda, Yuri Gandhi  
    ;
    Torres-Chávez, Edson E.
    ;
    Guevara Zumaeta, Jonathan Gabriel  
    Climate change is projected to increase global temperatures and alter rainfall patterns. In Peru, these changes could adversely affect the central basin of the Huallaga River by increasing pest and disease incidence, evapotranspiration, and water consumption. This basin is one of the country’s main rice-producing regions, where the crop is traditionally cultivated using inefficient practices, such as continuous flood irrigation. This study evaluated the effects of different irrigation management strategies on the growth and yield of rice (Oryza sativa var. INIA 516 LM1-La Unión 23), the water footprint as an indicator of water use efficiency, and the incidence of pests and diseases associated with irrigation regimes. Three irrigation treatments were implemented: Traditional flooding T1 (maintenance of a 0.15 m water layer with replenishment every 4 days), Optimized flooding T2 (replenishment every 7 days), and Intermittent rainfed irrigation T3 (replenishment every 14 days). Although no significant differences were observed in biometric parameters, yield, or pest and disease incidence, a trend of decreasing yield with longer irrigation intervals was noted: traditional flooding (7.91 t∙ha−1) > reduced flooding (7.82 t∙ha−1) > intermittent rainfed (7.14 t∙ha−1). The incidence of white leaf virus and Burkholderia glumae was highest in the intermittent rainfed treatment, followed by optimized flooding, with the lowest incidence in traditional flooding. Yield reduction and the use of rainwater to cover water requirements resulted in a lower total water footprint for traditional flooding (834.0 m3∙t−1), followed by optimized flooding (843.6 m3∙t−1) and intermittent rainfed (923.9 m3∙t−1). This reflects an improvement in rainwater use efficiency. The findings suggest intermittent rainfed irrigation enhances water use efficiency without significantly compromising rice yield or increasing disease incidence in rice var. INIA 516 LM1-La Unión 23 in the central basin of the Huallaga River.
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