Abstract
ABSTRACT The study aimed to assess the impact of different investment strategies on agronomic parameters, specifically soil chemical composition and forage mass (FM), in a loamy-sandy Cambisol within the Brazilian Cerrado, following three cultivation cycles. High-investment (HI) included various crop-livestock integration strategies with soil management (harrowing/fertilisation) for intercrops: CG (corn with Paiaguas grass); GPP (Paiaguas grass with pigeon pea); CGPP (corn, Paiaguas grass, pigeon pea). After livestock farming, HI transitioned to soybean cultivation. Low-investment (LI) included other systems: CF (Decumbens grass monoculture with P2O5 fertilisation); PPCF (Decumbens grass with pigeon pea and P2O5); MC (Decumbens monoculture without fertilisation). In the third year (2016/2017), triple intercropping with Xaraes grass, corn, and pigeon pea was sown. In the HI, the highest base saturation (55.90%) values were obtained, which favoured increases in corn FM (2016/2017: 5181 kg/ha). In this investment model, high values of cation exchange capacity, calcium, and magnesium were observed. In the LI condition, the absence of mechanical soil management and the combination of legume and fertilisation promoted higher soil phosphorus (PPCF: 14.20 mg/dm3). When analysing corn FM and soil parameters, HI is the best option for sustainable production in agricultural areas (loamy-sandy) of the Brazilian Cerrado.
Published Version
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