Maize yield in an integrated crop-livestock-forestry system in south Goiás, Brazil

ABSTRACT Cerrado biome is responsible for part of Brazilian food production. However, due to inadequate soil management practices, large areas of crop and forage are degraded, leading to environmental and economic losses. A crop-livestock-forest system (CLFS) is a sustainable production strategy that integrates different cultivations. This objective of this study was to evaluate agronomic characteristics and maize (Zea mayz L.) yield when consorciated with Panicum maximum cv. Tamani, cultivated between rows of eucalypts clones. The statistical design used was randomized blocks, constituted by the following treatments: Maize + AEC 043; Maize + AEC 007; Maize + AEC 2111; and Maize + AEC 2034. The analyzed variables included: spikes length, number of rows, number of grains per row, number of grains per spike, and grain yield. Based on the obtained data, it is possible to conclude that trees did not affect maize yield in a CLFS. Considering that only 66% of the area was used for agriculture, maize yield was higher than when it is planted in total area.

摘要：塞拉多生物群落（Cerrado biome）支撑着巴西部分粮食生产。然而，受限于不当的土壤管理措施，大面积作物与饲草用地发生退化，进而引发环境与经济损失。农-牧-林系统（crop-livestock-forest system, CLFS）是一种整合多元种植模式的可持续生产策略。本研究旨在评估桉树无性系行间种植、与大黍（Panicum maximum cv. Tamani）间作的玉米（Zea mays L.)的农艺性状及籽粒产量。本研究采用随机区组设计，设置如下处理组：玉米+AEC 043、玉米+AEC 007、玉米+AEC 2111及玉米+AEC 2034。分析变量涵盖穗长、穗行数、行粒数、穗粒数及籽粒产量。基于试验所得数据可得出结论：农-牧-林系统中，林木并未对玉米产量产生影响。考虑到仅66%的试验面积被用于农业种植，该系统下的玉米产量高于全面积单作玉米的产量。