Examinando por Autor "Riveros Lizana, Christian Alonso"

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Native microbial consortia: A sustainable strategy for improving the quality of forest seedlings in the Peruvian Amazon
(MDPI, 2025-02-10) Amaringo Cordova, Luiz Paulo; Mori Montero, Cesar; Padilla Castro, Cesar Franco; Ocaña Reyes, Jimmy A.; Riveros Lizana, Christian Alonso; Camacho Villalobos, Alina Alexandra; Solórzano Acosta, Richard Andi
Forest plantations represent an alternative to reduce timber extraction pressure in the Amazonian forests. In order to tolerate the hostile field conditions of deforested areas, high-quality seedlings are required. This study aimed to find the optimal dose of a native microbial consortium (NMC), which enhances seedling quality indicators, in three forest species at nursery phase. A completely randomized design (3 × 5) was used. Factor 1: Bolaina blanca (Guazuma crinita Mart.), Capirona (Calycophyllum spruceanum Benth. Hook. f.), and Marupa (Simarouba amara Aubl.). Factor 2: Incremental doses of 0, 160, 320, 480, and 640 mL NMC per plant. The nursery survival (%), robustness index, root height/length ratio, shoot–root index, Dickson Quality Index (DQI), Nitrogen (%), Phosphorus (%), and Potassium (%) content in tissues were analyzed. Statistical analyses consisted of two-way ANOVA per variable and correlation analysis. The results indicated that increasing doses of NMC did not improve nursery survival for any species; did not decrease the robustness index, plant height/root length ratio, or the shoot–root index for any species; and did not increase the DQI, P%, or K% for any species; however, they did increase the N% for all species. In conclusion, the incremental dose of 160 mL was chosen for increasing the N% without affecting nursery survival.
Tillage practices and liming: comparative study of soil properties and forage corn production
(MDPI, 2024-03-09) Ocaña Reyes, Jimmy Alcides; Gutierrez Tang, Marco Antonio; Paredes Espinosa, Richard; Riveros Lizana, Christian Alonso; Cárdenas Rengifo, Gloria Patricia; Bravo Morales, Nino Frank; Quispe Tomas, Astrid Chilsy; Amaringo Cordova, Luiz Paulo; Ocaña Canales, Juan C.; Zavala Solórzano, José W.; Huamaní Yupanqui, Hugo A.; Cruz Luis, Juancarlos Alejandro; Solórzano Acosta, Richard Andi
Tillage conservation practices (CA), traditional agriculture (TA), and liming influence soil properties and crop yield. However, it is essential to demonstrate which tillage and liming practices improve soil properties and forage corn yield. This study compared soil properties and forage corn production in two tillage systems with the addition of dolomite and lime, which formed four treatments. The tillage in the first three days surpassed the TA soil CO2 emission, with 64.8% more CO2 than in the CA soil, and the TA hydraulic conductivity and bulk density were more suitable than those in the CA soil. The CA soil had 233 earthworms m−2 more than in TA. The TA green forage corn yielded 6.45 t ha−1 more than in CA, with a higher P, Ca, and Mg foliar content than in CA, but in the CA, the foliar N and K were higher than in TA. The liming increased soil cations (except K), highlighting the lime on dolomite with—52% Al and + 4.85 t ha−1 of forage corn compared to the control. Soil CO2 emission was far lower in CA than in TA, with a slightly lower forage yield, and other soil properties were improved, meaning lower land preparation costs and time savings than in TA. Lime improved acidic soil faster than dolomite, generating higher forage yields.