Title: Effect of drying temperature on physical properties of flint maize hybrids with different crop managements

Authors: M. Actis; M.R. Ordoñez; M.C. Gely; A.M. Pagano

Addresses: Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Balcarce, Ruta 226, Km 73.5 – CC 276, Balcarce (B7620ZAA), Buenos Aires, Argentina; TECSE, Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Buenos Aires, Av. Del Valle 5737, Olavarría (B7400JWI), Buenos Aires, Argentina ' TECSE, Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Buenos Aires, Av. Del Valle 5737, Olavarría (B7400JWI), Buenos Aires, Argentina; Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), Calle 526 entre 10 y 11, La Plata (1900), Buenos Aires, Argentina ' TECSE, Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Buenos Aires, Av. Del Valle 5737, Olavarría (B7400JWI), Buenos Aires, Argentina ' TECSE, Facultad de Ingeniería, Universidad Nacional del Centro de la Provincia de Buenos Aires, Av. Del Valle 5737, Olavarría (B7400JWI), Buenos Aires, Argentina

Abstract: The objective was to analyse the effect of the following factors: drying, hybrid and crop management on physical properties of two orange-flint maize respect to a dent hybrids, dried naturally and to 70 and 90°C, which were grown in a location of Argentina's main maize-production area during one growing season and with two levels of fertilisation respect to a control treatment. The drying only affected the arithmetic and geometric mean diameters. The length, width, and length/width, length/thickness, length/geometric mean diameter ratios, diameter of the spherical part of the kernel, sphericity and kernel volume depended on the hybrid. The bulk and kernel densities, porosity, thousand kernel weight, and angle of repose were influenced by the interactions drying*hybrid, drying*crop management, and hybrid*crop management. Thus, the flint maize hybrids should be dried to temperatures that not affected their physical properties, since these will determine their behaviour in storage plants.

Keywords: orange-flint maize; high drying temperatures; physical properties; kernel length; kernel width; kernel thickness; geometric mean diameter; arithmetic mean diameter; sphericity; kernel volume; kernel surface area; bulk density; kernel density; porosity; angle of repose.

DOI: 10.1504/IJPTI.2020.110877

International Journal of Postharvest Technology and Innovation, 2020 Vol.7 No.4, pp.271 - 294

Received: 01 Aug 2019
Accepted: 08 Jun 2020

Published online: 30 Oct 2020 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article