Effects of five substrates on the production of Ochroma pyramidale (Cav. ex Lam.) Urb. Paján canton, Manabí province

Abstract

Ecuador is one of the main balsa wood marketers, thanks to its subtropical zone which presents optimal geographical and climatic conditions that benefit its development. The balsa, O. pyramidale (Cav. ex Lam.) Urb., is a species native to the American tropics; It is frequently found in disturbed and degraded areas. The objective of this research was to determine the effects of five substrates on the propagation of Ochroma pyramidale (Cav. ex Lam.) Urb. seedlings in the Paján canton, province of Manabí. The research was carried out in the field from September to December 2020 in the Paján canton on the “LA RAQUELITA” Farm owned by Mr. Euclides Plaza, located at Km. 4 via Colimes, between the Geographic Coordinates 80°25′12″ of west longitude and 01°34'12” south latitude, an altitude of 200 meters above sea level. The ecological zone is a very dry tropical forest type (bmsT), characterized by an average daily temperature of 25 °C, receives average annual rainfall of 1626 mm, with a pH of 7, relative humidity 86% and 1146.6 hours of sunshine per day. anus. The treatments under study were T1 Black earth 100% (Control), T2 (Black earth 75%, sand 25%), T3 (Black earth 50%, sand 25%, humus 25%), T4 (Black earth, 33%, sand 33%, humus 33%) and T5 (black earth 50%, humus 50%), the results indicate that the substrate made up of black earth 50%, humus 50% allows for better results in the propagation of Ochroma pyramidale (Cav. ex Lam.) Urb. in nursery stage.