Abstract
The objective of this work was to evaluate the agronomic characteristics of maize intercropping with Eucalyptus urophylla at agroforestry system in two triple row distance (alleys) at different sampling distances and positions in relation to the eucalyptus external row (transect), and three positions in relation to the cardinal points: east side, west side and middle. Eucalyptus (E. urophylla) seedlings were planted with spacing of 1.5 m between plants and 3.0 m between rows (triple rows) and two triple row distances: 16.5 and 37.1 m apart, with the spatial exposure of the rows towards north and south, ranging from 888 to 464 plants ha-1. It was observed that treatments differed in relation to the number of ears ha-1 and grain yield in both seasons. In addition, in relation to the final plant density ha-1, in the 2014/2015 season, the maize at 4.2 m distance from eucalyptus at 16.5 m triple row distance had lower number of ears ha-1 and grain yield, and maize at 8.2 m from eucalyptus at 37.1 m triple row distance had greater number of ears and grain yield. The cardinal positions (W/E) in relation to the eucalyptus did not influence the agronomic characteristics of the maize. Key words: Cropping systems, integrated systems, Zea mays.
Highlights
The objective of this work was to evaluate the agronomic characteristics of maize intercropping with Eucalyptus urophylla at agroforestry system in two triple row distance at different sampling distances and positions in relation to the eucalyptus external row, and three positions in relation to the cardinal points: east side, west side and middle
There were no differences (P< 0.05) observed regarding the insertion height of the first ear and plant height but, on the other hand, the treatments differed from each other (P
Borges et al (2020) found no difference along a transect between eucalyptus’ rows in the insertion height of the first ear and final plant density ha-1 of maize intercropped with U. brizantha, in agroforestry system with E. urograndis (E. grandis × E. urophylla) H-13, after thinning the trees
Summary
Purpose of which is to increase soil C and reestablish soil fertility, is increasingly implemented in the Brazilian Cerrado (Tonucci et al, 2017), and has been implemented mainly in sandy soils (Sarto et al, 2020a). These systems are interesting options for approaching global issues such as food security, climate change and sustainable farming besides improving social conditions in the rural environment (Borges et al, 2019a)
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