Knowledge Generation

Discover the science base for information

The basis for the generation of scientific knowledge disseminated by Aliança SIPA is entirely based on seven experiments, which encompass different producing regions of the Brazilian tropics and subtropics. The experiments are all long-term and based on Integrated crop-livestock systems, generating information requested and safe to be applied. The conduct of the
experiments is responsible for three of the most renowned universities in the country, namely, the Federal University of Rio Grande do Sul (UFRGS), the Federal University of Paraná (UFPR), and the Federal University of Rondonópolis (UFR). Universities, from research produced by scientific initiation, master's and doctorate committed to generate information and disseminate it to complete the knowledge chain.

Discover our Experiments

Experiment nº 1 - Inserting livestock in the soy production context

The experiment has been conducted in direct sowing since 2001, in an area belonging to the Espinilho Farm (São Miguel das Missões). The soil is classified as a clayey Red Latosol, deep and well-drained. The system compares the introduction of rotating winter pastures with soybean crops with areas without integration. The total experient area is approximately 22 hectares. The treatments of different heights of pasture management: 10, 20, 30, and 40 cm and a treatment without grazing. Steers, aged around 12 months, are used in continuous grazing from the first half of July, extending until the first half of November, when soybean is cultivated until April / May. The main hypothesis refers on the impact of grazing intensities on animal and soy production in succession.

Experiment nº 2 - Producing sheep in rotation with soy

The experiment has been conducted under no-tillage  since 2003 at the UFRGS Experimental Agronomic  Station (Eldorado do Sul / RS) in Loamy Acrisol with a
sandy-loam texture, with slightly wavy relief and a total area of ​​4.8 ha. In winter, the experimental units receive annual  ryegrass, managed with two grazing methods: continuous and rotational, and two grazing intensities: 2.5 and 5.0 times the potential consumption of finishing lambs. The animals’ stocking rate adjustment is done at each end of the rotational grazing cycle, and the variable stocking is readjusted by forecasting the production of the pasture in the grazing cycle. In summer, the units are subdivided into two production systems: one with soybean monoculture and the other with annual soybean/corn rotation. In
the year 2017, this experiment underwent modification. Today its main objective is to evaluate the impact of fertilizing systems (only in winter, ryegrass, or in summer, in soybeans), in the attributes of soil, animal production of sheep, and grains of soy. The conduction of the experiment follows similarly, using sheep in grazing with variable stocking rate, aiming to maintain a 15 cm  height of ryegrass pasture. The hypothesis of the current experiment relies on the effect of phosphate and potassium fertilization on agricultural and livestock production and the main attributes of the soil.

Experiment nº 3 - Diversifying agricultural production in lowlands

The experiment has been conducted since 2013 at Fazenda Corticeiras,
(municipality of Cristal / RS), in Albaqualf soil, with flat relief and an area of ​​18
ha under no-tillage in four of the five systems. The investigated systems represent different scenarios of rice production in lowlands in the southern half of RS. The grazing cycle uses beef steers in continuous grazing. As of the winter of 2017, the systems received new adaptations, mainly involving the timing of fertilization. To evaluate the efficiency of using nutrients from the different systems, only the reference production system, with rice production in monoculture and intense soil revolving, will receive fertilization in the summer, with the other systems receiving all fertilization in the winter period,
characterizing systemic fertilization. The door hypothesis is about the impact of pasture introduced on agricultural rotations and the spatial (intensity) and temporal (duration) diversity of these rotations.

 

Experiment nº 4 – Integrated Crop Livestock Systems in promoting sustainability in an area of ​​environmental protection

The experiment has been located at the UFPR Experimental Canguiri Farm in the municipality of Pinhais / PR, since 2012, in an Environmental Protection Area (APA) in Iraí, which is a territorial unit created in 1996 for “protection and conservation of the quality and quantity of water for public supply purposes”. Seven treatments are studied that explore combinations of rotations of corn, sunflower, oats + ryegrass, Aries grass, and eucalyptus. The experimental area is 32 ha.

Experiment nº 5 - Maintenance of soybean viability in sandy soils with the introduction of ICLS

The present experiment has been installed, since 2017, in an experimental area of ​​the Mato Grosso do Sul Institute (IMA), in the city of Rondonópolis – MT, in a Quartzene Neossol. The experiment consists of combinations of crop management systems with increasing levels of plant diversity (Functional Diversity). The soybean crop is grown in the harvest (sometimes rotated with corn). The pasture is inserted in the second harvest, except for the fallow system, with single pasture for eight months, intercropped pasture (with species from 4 families) intercropped pasture (with species from 4 families) for 20 months and a system with greater diversity with the introduction of animals for grazing. The experiment's main objective is to have information for adequate management of sandy soils cultivated with soybean in Mato Grosso.

Experiment nº 6 - Feasibility of cotton cultivation in sandy soils in Mato Grosso

The present experiment has been installed, since 2017, in an experimental area of ​​the Mato Grosso Institute of Cotton (IMA), in the city of Rondonópolis-MT, in a Quartzene Neossol. The experiment consists of combinations of crop management systems with increasing levels of residues addition and plant diversity in the pasture phase, with a focus on adding organic matter in sufficient quantity and quality to increase the population and diversity of soil microorganisms, with repercussions on soil quality and  sustainability of the cotton production system in sandy soils.

Experiment nº 7 - Fertilization of systems as an alternative for sustainable intensification in SIPA in the Cerrado

The Experiment has been conducted since 2019 at Fazenda Guarita (Rondonópolis – MT), in an area of ​​15 ha in a dystrophic Red Latosol. The systems investigate how the timing of fertilization (P and K) and nitrogen fertilization in the pasture of an ICLS can cause effects on soil-plant-animal-atmosphere relationships. The anticipation of fertilization in the off-season promotes improvements in the quality and production of the pasture, enhancing animal production without affecting soybean productivity.

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