Uso alternativo da adubação orgânica em substituição à mineral no cultivo do milho

Abstract

Corn (Zea mays) is an annual, robust, monocot plant, one of the main cereal grown worldwide, providing products widely used for food, feed and raw materials for industry, mainly due to the quantity and nature of reserves accumulated in the grains, but the culture has presented low income primarily due to inadequate management of irrigation and fertilization. Therefore, the objective of this work was to evaluate the growth, production performance and physiological seed quality of maize due to the use of organic compost in the presence and absence of biofertilizer with membership or not of inoculant compared with mineral fertilization. The first experiment was conducted in the field at the Universidade Federal Rural of Pernambuco, Unidade Acadêmica of Garanhuns (UFRPE/UAG) in Garanhuns-PE, in the months from November 2013 to March 2014 The experimental design was a randomized block consisting of nine treatments and three replications: T1 - control; T2 - organic compost; T3 - biofertilizers; T4 - inoculant; T5 - organic compost inoculant; T6 - biofertilizer inoculant; T7 - organic compost + biofertilizer; T8 - organic compost + biofertilizer + inoculant; T9 - mineral fertilization. Variables of vigor and growth and agronomic traits in corn plants were evaluated. A second experiment was conducted in the Laboratory of Seed Analysis UFRPE/UAG in a completely randomized design with nine treatments and four replications with planting the seeds from the field where they examined the physiological quality measured by germination and vigor tests. The growing of corn can be performed either using an organic fertilizer (fertilizer and organic compost) alone or associated with seed inoculation technique, as with synthetic mineral fertilizer. Among the treatments best suited for the preservation of the physiological quality of maize seed are the use of organic compost and biofertilizers beef with or without the inoculant.