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The Brazilian Cerrado presents potential to expand its wheat cultivation, but soil compaction is one of the factors that may limit production. The objective of this study was to evaluate production characteristics and chlorophyll index of two wheat cultivars (Triticum aestivum L.) under bulk density levels. The experiment was conducted in a greenhouse, with Rhodic Hapludox collected at 0.00-0.20 m depth. The experimental design was entirely randomized and the treatments were arranged in a 5x2 factorial scheme, corresponding to five bulk densities levels (1.0; 1.2; 1.4; 1.6 and 1.8 Mg m -3 ) and two wheat cultivars (BRS Guamirim and IAC 350) with four replications. The experimental plot was composed of one poly (vinyl chloride) pot of 0.1913 m internal diameter and 0.20 m height. Variables evaluated were: spike number, dry mass of spikes, aerial part, roots and chlorophyll index. There was no significant interaction between wheat cultivars and bulk density levels. The increasing bulk density reduced production and chlorophyll index of the wheat cultivars BRS Guamirim and IAC 350. The IAC 350 cultivar presented better spike production and higher chlorophyll index, regardless the bulk density levels.

Wheat cultivars under bulk density levels in Cerrado Rhodic Hapludox, Central Brazil