CRESCIMENTO INICIAL DO MILHO EM FUNÇÃO DA CALAGEM, GESSAGEM E BIOESTIMULAÇÃO COM Ascophyllum nodosum EM SOLO RICO EM ALUMÍNIO.

Abstract

CHAGAS, Marcos Gustavo Kemmerich. Initial corn growth as a function of liming, plastering and biostimulation with Ascophyllum nodosum in aluminum rich soil. 2019. 25p. Monograph (Bachelor of Agronomy Course). Goiano Federal Institute of Education, Science and Technology - Rio Verde Campus, GO, 2019.

The present work aims to evaluate the initial growth of the root system of maize as a function of liming, plastering and seed treatment with Ascophyllum nodosum extract in soil with high Al saturation. The experimental design was completely randomized in a factorial scheme. 2 x 2 x 2 being with and without liming, with and without plaster and with and without seed treatment (TS) with Ascophyllum nodosum. Each rhizotron was constituted a plot. The shoot (MSPA), root (MSR) and total (MST) dry mass, shoot (PPA) and root (PR) dry matter ratio, rhizotrom root system depth (m) and area were evaluated. of the rhizotrom occupied by the root system. The MSPA, MSR and MST varied only as a function of liming, where it obtained the highest values. There was a higher proportion of shoot and root growth in depth in the plants without plaster and greater exploration of soil area by root system with liming and TS with A. nodosum. It was concluded that under Al toxicity conditions liming was the best source to increase root growth and larger soil area explored by secondary roots and roots when under TS with A. nodosum.