Rullán Vázquez, Luis F.

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    Effect of the combination of three water regiments and biomass production of five cover crop species on the health of six soil orders
    (2024-04-16) Rullán Vázquez, Luis F.; Dumas Rodríguez, José A.; College of Agricultural Sciences; Chong Núñez, Joaquín A.; Snyder Sevit, Victor; Department of Agro-Environmental Sciences; Valderrama, Clara I.
    The inadequate management of agricultural lands and climate change have increased problems like desertification, salination, and soil erosion, which greatly concern scientists, farmers, and agronomists. Conservation of the fertile soil layer represents a challenge under current climate change conditions and standard management practices. Implementing conservation practices such as using cover crops has shown the potential to help control grasses, and when harvested, improve soil fertility, and help control insects and diseases of economic importance. Utilizing the soil health indicators from the Natural Resources Conservation Service (NRCS), a series of studies were conducted to observe how five cover crop species and three irrigation regimens impacted six soil series from six distinct soil orders. Ten parameters were selected based on their agronomic importance, which included β-Glucosidase, Active Carbon, pH, pH in CaCl2. Conductivity, Organic Matter, Hot Water Extractable Carbon, Plant Quantity, Plant Height, and Plant Biomass. When comparing the cover crops, the Jack Bean (Canavalia ensiformis) provided the most favorable results on the soil-based for the three water regimes, especially on parameters such as β-GLU, AC, EC, OM, and HWEC, well as proved to be the species with the most resistance to changes in water regimen and soil moisture. However, the results tend also to indicate that the water regimens had the most impact of all the treatments, with the Normal Humidity (NH) regimen consistently showing the most positive impact irrespective of cover crop species on the soil-based parameters similarly resulting in mostly positive changes in β-GLU, AC, EC, OM, HWEC and the plant parameters such as biomass production and plant height.