Rodriguez Cruz, Jencel
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Publication Enmienda orgánica de lignina y su efecto en las propiedades físicas y químicas del suelo como en los rendimientos de los cultivos de maíz, tomate y frijol(2021-12-09) Rodriguez Cruz, Jencel; Flores-Mangual, Mario L.; College of Agricultural Sciences; Bair Gallegos, Daniel A.; Feliciano-Rivera, Merari; Department of Crops and Agro-Environmental Sciences; Figueroa-Medina, Carmen I.Lignin is a structural component of vegetative material and therefore can be found in great abundance. Lignin can be obtained by the deconstruction of plant material and can be used as an organic amendment in soil. A field experiment was carried out amending a San Antón series soil with lignin to test its effects on soil properties and crop growth. Lignin was incorporated at a ratio of 80 g soil: 1 g lignin as a soil amendment and, the effects on soil physical and chemical properties were studied. These effects were evaluated with corn, tomato and bean crops. The results showed that pH decreased from 6.85 to 6.44 with the addition of lignin. Also, salinity was higher with lignin application at the beginning of planting. The percentage of organic matter, the cationic exchange capacity (CIC) and the percentage of stability of aggregates increased with lignin addition to 4.82 percent, 45.97 cmolc/kg and 61 percent, respectively. The yield of corn, beans and tomato did not show significant differences in lignin treatment versus control. Lignin as an organic amendment can significantly improve the physical and chemical properties of the soil, however no yield differences in one year of application of lignin were presented.