the Lime amendment in soils degraded by livestock in the Panguintza parish, Zumbi canton, Zamora Chinchipe province

Abstract

The soils of Zamora Chinchipe, they are deep, andesita, acidic and low fertility, the andesite parent material has a notable impact on its productive potential. In order to control the acidity of a Rhodic Kandiudults in hillside soils, degraded by the effect of livestock, formed of andesites, They belong to the Upper Member of the Chapiza Formation of the Jurassic, of the Panguintza parish of the Zumbi canton, the chemical and physical characteristics of the soil were analyzed. Herbaceous and shrubby vegetation was cut to the ground. The experiment was traced and the planting point of each tree species was located; From which a circumference of 2.0 m in diameter was drawn. In the circle the calcium carbonate was distributed superficially and uniformly; then it was mixed with the soil up to 25 cm deep. These doses were applied in an arrangement of subdivided plots (2x2x3) two tree species melina (Zchizolobium parahybum) and pachaco (Gmelina arborea), two levels of the lime-fertilization combination and three levels of carbon (0.0 t/ha, 3.0 t/ha and 6.0 t/ha), A randomized block experiment was designed. with twelve treatments, three replicates and 16 plants per experimental unit. In the initial stage of cultivation, the experimental units received N, P, K, B, Mg and Zn; at 120 days, an increase in pH from (4.6 to 4.9) was observed; Al+3 decreased from 3.0 to 1.6 meq/100 g, base saturation increased by 23 units and decreased by 3. In the response variable plant height, a significant increase was evidenced, the pachaco reached an average height of 5.4 and 9.2 m, without and with fertilization whose difference is equivalent to a growth of 0.7 and 1.3 cm/day, while the melina reached a average height of 6.4 and 7.7 m without and with fertilization, which is equivalent to a growth of 0.9 and 1.1 cm/day.