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ENADE Agronomia is Brazil's official national capstone assessment for graduating Agronomy and Agronomic Engineering students administered by INEP/MEC. Spanning a 4-hour session with 46 questions (15 Formação Geral MCQs + 30 specific MCQs + 1 discursive item), it evaluates soil science and plant nutrition (20%), crop production (20%), plant health (15%), agricultural engineering and mechanization (15%), sustainable livestock systems (15%), and agribusiness management, environmental law, and ethics (15%).

Sample ENADE Agronomia Practice Questions

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1In Brazilian soil fertility management, the base saturation method is widely used to calculate the liming requirement (Necessidade de Calagem - NC). A soil analysis shows an initial base saturation (V1) of 40%, a total cation exchange capacity (CTC at pH 7.0 / T) of 10.0 cmolc/dm³, a target base saturation (V2) of 70% for soybean cultivation, and limestone with a Relative Total Neutralizing Power (PRNT) of 80%. What is the recommended liming rate in metric tons per hectare (t/ha)?
A.3.75 t/ha, calculated using the standard base saturation equation NC (t/ha) = [(V2 - V1) * T] / PRNT for the arable layer.
B.5.00 t/ha, calculated using the uncorrected base deficit formula NC (t/ha) = (V2 - V1) / (PRNT * 0.75).
C.2.40 t/ha, calculated by multiplying the base saturation difference directly by effective CEC without buffer factor.
D.4.50 t/ha, calculated assuming an uncorrected 100% PRNT limestone requirement for tropical clayey Oxisols.
Explanation: The base saturation method calculates the limestone requirement as NC (t/ha) = [(V2 - V1) * T] / 100 for a 100% PRNT material, then corrects for the reactivity of the commercial product by multiplying by 100/PRNT. Combining both steps gives NC (t/ha) = [(V2 - V1) * T] / PRNT, with V in percent and PRNT expressed as a whole number: NC = [(70 - 40) * 10.0] / 80 = 300 / 80 = 3.75 t/ha. This rate raises base saturation from 40% to 70% in the 0-20 cm arable layer while adjusting for the 80% PRNT reactivity.
2When managing highly weathered Cerrado Oxisols (Latossolos) with low cation exchange capacity and high exchangeable aluminum, agronomists often compare the base saturation method with the aluminum neutralization method for liming. Under which soil chemical condition is the aluminum neutralization method specifically prioritized?
A.In coarse sandy soils with low organic matter where the base saturation method would excessively raise soil pH above neutral alkaline thresholds.
B.In highly weathered soils with very low CTC (T < 4.0 cmolc/dm³) where base saturation equations might underestimate aluminum toxicity.
C.In fertile alluvial soils exhibiting high exchangeable calcium and magnesium levels above standard saturation limits.
D.In alkaline sodic soils where exchangeable sodium percentage exceeds 15% and requires calcium sulfate remediation.
Explanation: In coarse-textured, highly weathered tropical soils with very low total CTC (T < 4.0 cmolc/dm³), the base saturation method can calculate very low limestone rates that fail to adequately eliminate toxic exchangeable aluminum (Al³⁺). The aluminum neutralization and minimum calcium/magnesium requirement method [NC = Y * Al³⁺ + [X - (Ca²⁺ + Mg²⁺)]] ensures that exchangeable aluminum is fully neutralized and minimum Ca and Mg thresholds are satisfied.
3Agricultural phosphogypsum (gesso agrícola - CaSO4.2H2O) is an essential subsoil conditioner in tropical agriculture. Which set of chemical criteria in the 20-40 cm or 40-60 cm soil layer indicates a technical recommendation for phosphogypsum application (gessagem) in grain cropping systems?
A.pH in water > 6.5, base saturation (V%) > 75%, and exchangeable aluminum (Al³⁺) < 0.1 cmolc/dm³ in the subsoil.
B.Available phosphorus (Mehlich-1) < 5 mg/dm³, exchangeable potassium < 0.15 cmolc/dm³, and high organic matter content in subsoil.
C.Exchangeable Ca²⁺ < 0.5 cmolc/dm³, and/or aluminum saturation (m%) > 20%, and/or exchangeable Al³⁺ > 0.5 cmolc/dm³ in subsoil.
D.Electrical conductivity (ECe) > 4.0 dS/m, exchangeable sodium percentage (ESP) < 5%, and low sulfate content.
Explanation: According to Brazilian agronomic standards (e.g., Sousa & Lobato / Embrapa Cerrados), phosphogypsum application is recommended when the subsoil layer (20-40 cm or 40-60 cm) presents chemical constraints to root growth: Ca²⁺ < 0.5 cmolc/dm³, Al³⁺ > 0.5 cmolc/dm³, or aluminum saturation (m%) > 20%. Phosphogypsum is more soluble than limestone, allowing calcium and sulfate ions to migrate into deeper layers, alleviating subsoil aluminum toxicity and promoting deep root elongation.
4A routine soil fertility analysis from a Cerrado field reports the following values: Ca²⁺ = 2.4 cmolc/dm³, Mg²⁺ = 0.8 cmolc/dm³, K⁺ = 0.3 cmolc/dm³, Al³⁺ = 0.5 cmolc/dm³, and (H + Al) = 3.5 cmolc/dm³. What are the Effective Cation Exchange Capacity (t), Total Cation Exchange Capacity at pH 7.0 (T), and Aluminum Saturation (m%) of this soil?
A.t = 3.5 cmolc/dm³, T = 7.0 cmolc/dm³, and m% = 14.3% across the entire arable topsoil horizon.
B.t = 4.5 cmolc/dm³, T = 8.0 cmolc/dm³, and m% = 12.5% across the entire arable topsoil horizon.
C.t = 3.2 cmolc/dm³, T = 6.5 cmolc/dm³, and m% = 20.0% across the entire arable topsoil horizon.
D.t = 4.0 cmolc/dm³, T = 7.0 cmolc/dm³, and m% = 12.5% across the entire arable topsoil horizon.
Explanation: Sum of Bases (SB) = Ca + Mg + K = 2.4 + 0.8 + 0.3 = 3.5 cmolc/dm³. Effective CTC (t) = SB + Al³⁺ = 3.5 + 0.5 = 4.0 cmolc/dm³. Total CTC at pH 7.0 (T) = SB + (H + Al) = 3.5 + 3.5 = 7.0 cmolc/dm³. Aluminum saturation (m%) = (Al³⁺ / t) * 100 = (0.5 / 4.0) * 100 = 12.5%. Understanding these relationships is critical for diagnosing soil fertility and acidity constraints.
5Soil water retention and availability are governed by soil matric potential. What matric potential values are standardly defined in agronomy for Field Capacity (Capacidade de Campo - CC) in tropical soils and Permanent Wilting Point (Ponto de Murcha Permanente - PMP)?
A.-10 to -33 kPa (-0.10 to -0.33 bar) for Field Capacity and -1500 kPa (-15 bar) for Permanent Wilting Point in tropical soils.
B.-100 to -300 kPa (-1.0 to -3.0 bar) for Field Capacity and -3000 kPa (-30 bar) for Permanent Wilting Point.
C.-0.1 to -1.0 kPa (-0.001 to -0.01 bar) for Field Capacity and -100 kPa (-1.0 bar) for Permanent Wilting Point.
D.-33 to -50 kPa (-0.33 to -0.50 bar) for Field Capacity and -500 kPa (-5.0 bar) for Permanent Wilting Point.
Explanation: Field Capacity (CC) represents the water content retained in soil after excess gravitational water has drained away, standardly measured at a matric potential of -10 kPa for coarse/medium-textured tropical soils and -33 kPa for fine-textured soils. Permanent Wilting Point (PMP) is defined at -1500 kPa (-15 bar), the tension beyond which mesophytic crop plants can no longer extract water to sustain turgor.
6An agronomist calculates the Available Water Capacity (Capacidade de Água Disponível - CAD) for an irrigation project in a clayey Latosol. Soil analysis shows: volumetric moisture at field capacity (θCC) = 0.35 cm³/cm³, volumetric moisture at permanent wilting point (θPMP) = 0.20 cm³/cm³, and an effective crop root depth (Z) of 400 mm. What is the total CAD of this soil layer?
A.40 mm, calculated using the standard formula CAD = (θCC - θPMP) * Z * 0.67 for readily available water.
B.60 mm, calculated using the standard formula CAD = (θCC - θPMP) * Z across the active root exploration zone.
C.80 mm, calculated using the empirical formula CAD = θCC * Z / (1 + θPMP) for high-clay tropical soils.
D.120 mm, calculated using the empirical formula CAD = (θCC + θPMP) * Z / 2 assuming symmetric capillary pore water retention.
Explanation: Available Water Capacity is calculated as CAD = (θCC - θPMP) * Z. Here, CAD = (0.35 - 0.20) * 400 mm = 0.15 * 400 mm = 60 mm. This means the 400 mm root zone stores a maximum of 60 mm of readily available water between field capacity and permanent wilting point.
7Tropical Oxisols (Latossolos) typically exhibit variable (pH-dependent) charge dominated by kaolinite, gibbsite, goethite, and hematite. What happens to the net surface charge and Cation Exchange Capacity (CEC) of these soils when soil pH is raised from 4.8 to 6.2 through liming?
A.Net positive charge increases, causing a marked decrease in CEC and an increase in sulfate retention capacity.
B.Net negative surface charge remains completely constant because permanent isomorphic substitution in 2:1 clay minerals dominates the soil mineral matrix.
C.Deprotonation of hydroxyl groups on iron/aluminum oxides and organic matter generates negative charges, significantly increasing effective CEC.
D.Specific adsorption of calcium ions blocks cation exchange sites, permanently reducing potassium and magnesium availability.
Explanation: In 1:1 clay minerals (kaolinite) and Fe/Al sesquioxides (gibbsite, hematite, goethite), surface charge is predominantly pH-dependent. Raising the soil pH from 4.8 to 6.2 causes the deprotonation (dissociation of H⁺) of surface hydroxyl groups (-OH → -O⁻ + H⁺) and carboxyl/phenolic groups of soil organic matter, creating net negative surface charges that markedly enhance the soil's effective Cation Exchange Capacity (CEC).
8The Universal Soil Loss Equation (USLE / EUPS) predicts average annual soil loss: A = R * K * L * S * C * P. Which conservation practice directly modifies the 'P' (support practice) factor to minimize water erosion in agricultural watersheds?
A.Applying agricultural limestone and phosphogypsum to improve subsoil physical structure and hydraulic conductivity.
B.Selecting crop cultivars with rapid early vegetative canopy closure to maximize ground shading and rainfall interception.
C.Increasing soil organic matter content through green manuring to reduce soil erodibility and aggregate breakdown.
D.Contour planting, vegetative buffer strips, and agricultural terracing (terraceamento em nível ou desnível).
Explanation: In the USLE equation (A = R * K * L * S * C * P), P represents the support practice factor, which accounts for mechanical and structural interventions designed to slow surface runoff and trap sediment, such as contour farming (plantio em contorno), terracing (terraços), and grass filter strips. C represents cover and management, K represents soil erodibility, R is rainfall erosivity, and LS represents topography.
9The Brazilian No-Till System (Sistema Plantio Direto - SPD) is recognized globally as a sustainable soil management model. What are the three non-negotiable agronomic pillars required to maintain a genuine, certified No-Till System?
A.Continuous minimum mechanical soil disturbance restricted to the planting furrow, permanent organic soil cover (straw/mulch), and diversified crop rotation.
B.Annual deep subsoiling to relieve hardpan compaction, complete mechanical incorporation of crop residues with disc plows, and continuous monoculture of cash crops.
C.Heavy reliance on pre-plant burn-down tillage, maintenance of bare soil between harvesting and sowing, and intensive chemical fumigation regimes.
D.Zero application of chemical fertilizers, exclusive reliance on green manure composts, and total prohibition of motorized mechanical seeders.
Explanation: The three foundational pillars of the genuine Sistema Plantio Direto (SPD) are: (1) minimal mechanical disturbance of the soil (restricted strictly to the furrow opening during sowing), (2) permanent ground cover through living vegetation or crop residues (straw/palhada), and (3) diversified crop rotation (rotação de culturas com inclusão de espécies de cobertura). Merely planting without plowing while practicing monoculture is classified as 'plantio direto na palha' but does not constitute a true SPD.
10Biological Nitrogen Fixation (FBN) in soybean (*Glycine max*) relies on symbiosis with *Bradyrhizobium japonicum* or *Bradyrhizobium elkanii*. Which micronutrients are biochemically indispensable as cofactors for the nitrogenase enzyme complex and leghemoglobin synthesis?
A.Zinc (Zn) as the primary catalyst of nitrogenase and Manganese (Mn) for atmospheric dinitrogen cleavage across active bacteroid cytoplasmic membranes.
B.Molybdenum (Mo) as a constituent of the FeMo-cofactor of nitrogenase, and Cobalt (Co) for cobalamin (vitamin B12) synthesis in active bacteroids.
C.Boron (B) for leghemoglobin oxygen binding and Copper (Cu) for bacteroid cellular wall elongation during symbiotic infection.
D.Chlorine (Cl) for nodule osmotic regulation and Nickel (Ni) for direct atmospheric dinitrogen reduction in cortical root cells.
Explanation: Biological Nitrogen Fixation is catalyzed by the nitrogenase enzyme complex, whose catalytic subunit contains a critical iron-molybdenum cofactor (FeMo-co) that binds and reduces atmospheric N2 to NH3. Cobalt (Co) is an essential micronutrient for the synthesis of cobalamin (vitamin B12 coenzyme), which is required by *Bradyrhizobium* for cell division, bacteroid maturation, and leghemoglobin functioning.

About the ENADE Agronomia Exam

The Exame Nacional de Desempenho dos Estudantes (ENADE) for Agronomy / Agronomic Engineering (Bacharelado em Agronomia / Engenharia Agronômica) is the premier national capstone evaluation conducted by the Instituto Nacional de Estudos e Pesquisas Educacionais Anísio Teixeira (INEP) under the Brazilian Ministry of Education (MEC). Established pursuant to Federal Law nº 10.861/2004 as part of the Sistema Nacional de Avaliação da Educação Superior (SINAES), ENADE evaluates graduating undergraduate seniors (concluintes) across Brazil. The assessment rigorously tests the student's mastery of the scientific foundations, engineering calculations, technological applications, environmental sustainability frameworks, and ethical responsibilities defined in the National Curriculum Guidelines (Diretrizes Curriculares Nacionais - DCNs) and the Federal Council of Engineering and Agronomy (CONFEA) under Federal Law nº 5.194/1966. The 2026 bachelor examination format features 46 questions: 15 General Training (Formação Geral) multiple-choice items addressing ethics, citizenship, human rights, and socio-economic dynamics, 30 Specific Component (Componente Específico) multiple-choice questions, and 1 specialized discursive problem. Topics span Soil Science & Plant Nutrition, Crop Production & Physiology, Plant Protection & Phytosanitary Management, Agricultural Engineering & Mechanization, Sustainable Livestock & Pastures, and Agribusiness Farm Economics & Environmental Law. Satisfactory completion of the exam and the mandatory Student Questionnaire is an indispensable legal prerequisite for degree conferral, professional registration with the Regional Council of Engineering and Agronomy (CREA), and the calculation of university quality indicators.

Assessment

4-hour national examination featuring 15 Formação Geral MCQs, 30 specific agronomic science & engineering MCQs, and 1 specific discursive problem covering soil science, crop production, plant health, agricultural engineering, livestock integration, and agribusiness.

Time Limit

4 hours

Passing Score

Conceito Enade (1 to 5)

Exam Fee

Free (Gratuito) (INEP / Ministério da Educação (MEC))

ENADE Agronomia Exam Content Outline

Not published

Ciência do Solo e Nutrição de Plantas

Covers soil physical properties (bulk density, porosity, compaction, soil water retention curve: field capacity and permanent wilting point); soil chemistry and mineralogy (1:1 kaolinite, 2:1 clays, Fe/Al oxides, cation exchange capacity: CTC effective and at pH 7.0, base saturation V%); soil fertility management (liming calculation by base saturation method, phosphogypsum / gessagem calculation, phosphorus fixation in Oxisols/Latossolos, potassium dynamics); nitrogen transformations (biological N2 fixation, nitrification, volatilization); micronutrient availability vs. pH; visual deficiency diagnosis; and soil classification (SiBCS) and erosion conservation (USLE/EUPS).

Not published

Fitotecnia e Produção Vegetal

Addresses ecophysiology, phenology, and cultural practices for major Brazilian commercial crops: soybean (Fehr & Caviness scale, maturity groups, determinate vs. indeterminate), corn (yield components, planting density, safrinha management), sugarcane (maturation indices, ATR/TRS, chemical ripeners), coffee (Coffea arabica physiology, biennial bearing, pruning), cotton (growth regulators/mepiquat chloride), and cassava; plant breeding systems (pedigree, SSD, hybrid breeding); photosynthetic pathways (C3, C4, CAM) and water use efficiency; seed science (tetrazolium test, germination, vigor); and horticulture, protected cultivation, and plant propagation.

Not published

Fitossanidade e Proteção de Plantas

Explores agricultural entomology and Integrated Pest Management (MIP: Economic Injury Level - NDE, Action Threshold - NC, drop cloth sampling in soybeans, fall armyworm in corn, stink bugs); phytopathology (disease triangle, Asian soybean rust Phakopsora pachyrhizi, coffee leaf rust Hemileia vastatrix, citrus diseases: CVC and Greening/HLB); weed science (HRAC modes of action: EPSPS, ALS, ACCase, PSII, PPO; weed resistance mechanisms in Conyza and Eleusine); plant nematology (Meloidogyne, Heterodera, Pratylenchus); pesticide toxicology and GHS/ANVISA classification; fungicide resistance management (FRAC guidelines); and pesticide application technology (nozzle selection, drift reduction, droplet size).

Not published

Engenharia Rural, Mecanização e Irrigação

Covers agricultural machinery and tractor mechanics (sprayer calibration calculations in L/ha, wheel slip, ballasting, effective field capacity CCE, combine harvesting loss assessment); irrigation and drainage engineering (crop evapotranspiration ETc via Penman-Monteith FAO-56, irrigation depths ITN/ITB, center pivot uniformity CUH/CUC, drip irrigation emitter hydraulics and clogging prevention, agricultural drainage with Hooghoudt equation); topography (contour lines, leveling, bench and broad-base terracing); precision agriculture (RTK GNSS, variable rate technology VRA, NDVI remote sensing); and farm structures and electrification (photovoltaic pumping, ITGU index).

Not published

Zootecnia e Agropecuária Sustentável

Encompasses tropical forage ecophysiology (tillering, light interception LI 95% grazing height targets for Urochloa and Megathyrsus); pasture management (continuous vs. rotational grazing, stocking rate UA/ha, forage allowance, pasture degradation stages and renewal); forage conservation (silage fermentation microbiology: lactic acid bacteria, pH, dry matter losses; haymaking curing stages); ruminant nutrition and non-protein nitrogen (urea adaptation and toxicity prevention); Integrated Crop-Livestock-Forestry Systems (ILPF / iLPF synergies); agroecology and organic farming (Lei 10.831/2003, composting, green manuring); and livestock sustainability (enteric methane mitigation, Carne Carbono Neutro protocol).

Not published

Formação Geral, Gestão Ambiental e Agronegócio

Focuses on farm economic management (Effective Operating Cost - COE, Total Operating Cost - COT, Total Cost - CT, gross and net margins, break-even analysis); agricultural marketing and financial risk management (B3 futures, barter contracts, Cédula de Produto Rural - CPR, rural credit / Plano Safra / PRONAF); Brazilian environmental legislation (Forest Code - Lei nº 12.651/2012, CAR, Permanent Preservation Areas - APP, Legal Reserve - RL, PRA); professional practice and ethics under CONFEA/CREA (Lei nº 5.194/1966, ART, Resolução nº 218/1973); agronomic prescription (receituário agronômico under Lei nº 7.802/1989 / Lei nº 14.785/2023); rural occupational safety (NR 31); and reverse logistics of pesticide containers (inpEV).

How to Pass the ENADE Agronomia Exam

What You Need to Know

  • Passing score: Conceito Enade (1 to 5)
  • Assessment: 4-hour national examination featuring 15 Formação Geral MCQs, 30 specific agronomic science & engineering MCQs, and 1 specific discursive problem covering soil science, crop production, plant health, agricultural engineering, livestock integration, and agribusiness.
  • Time limit: 4 hours
  • Exam fee: Free (Gratuito)

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

ENADE Agronomia Study Tips from Top Performers

1Master Quantitative Soil Calculations: Practice liming calculations using the base saturation formula ($NC = \frac{(V_2 - V_1) \times CTC}{PRNT}$), phosphogypsum dosages ($NG$), effective vs. total CTC, and soil water availability ($CAD = (CC - PMP) \times Ds \times Z$).
2Connect Crop Ecophysiology with Management: Understand phenological critical windows (e.g., soybean R1-R6, corn V4-V6 and VT/R1), $C_3$ vs. $C_4$ photosynthetic temperature and water responses, and seed vigor interpretation via tetrazolium staining patterns.
3Review Integrated Pest & Resistance Management: Memorize HRAC herbicide modes of action, FRAC fungicide resistance rules (mixing multi-site protectants with single-site QoI/DMI/SDHI), and MIP economic threshold concepts ($NDE$ and $NC$).
4Solve Agricultural Engineering Problems: Practice sprayer calibration equations ($Q = \frac{600 \times q}{w \times v}$), tractor slip calculations, combine header loss measurements, and crop evapotranspiration ($ET_c = ET_0 \times K_c$).
5Memorize Brazilian Environmental & Professional Regulations: Understand Forest Code APP buffer widths, Legal Reserve percentages by biome (80% Amazon forest, 35% Amazon Cerrado, 20% elsewhere), CAR/PRA rules, and CONFEA/CREA ART regulations (Lei 5.194/1966).

Frequently Asked Questions

What is the official structure and duration of ENADE Agronomia for the 2026 cycle?

The official 2026 bachelor examination is administered in a single 4-hour session consisting of 46 questions: 15 General Training (Formação Geral) multiple-choice items, 30 Specific Component (Componente Específico) multiple-choice items, and 1 specific discursive problem requiring applied agronomic calculation or design.

Is participation in ENADE Agronomia mandatory for undergraduate graduation?

Yes. Under Brazilian Federal Law nº 10.861/2004 (SINAES), ENADE is a mandatory curricular component for all enrolled graduating seniors (concluintes) in Bachelor of Agronomy / Agronomic Engineering programs. Completion of the exam and the mandatory online Student Questionnaire is legally required to obtain the degree diploma and register with the Regional Council of Engineering and Agronomy (CREA).

How is the Conceito Enade score calculated and used by MEC/INEP?

The Conceito Enade is calculated on a standardized 1 to 5 scale by INEP, evaluating the relative academic performance of graduating cohorts. A score of 3 indicates satisfactory compliance with national educational standards, while scores of 4 and 5 indicate high academic excellence. It serves as a primary metric for university accreditation and the Conceito Preliminar de Curso (CPC).

What happens if a registered graduating senior misses the official ENADE exam?

Students designated as mandatory concluintes who miss the examination become irregular with INEP/MEC and are legally prohibited from graduating or receiving their diplomas. To regularize their status, they must file a formal dispensation request (pedido de dispensa) with documentary evidence (medical emergency, official duty, or force majeure) via the INEP portal during the designated window.

How does this 100-question practice bank align with the real ENADE Agronomia exam?

This practice bank adapts the official INEP Agronomia assessment matrix into 100 comprehensive multiple-choice items in English, incorporating realistic Brazilian agronomic scenarios, fertility calculations (calagem/gessagem), sprayer and irrigation engineering problems, phytosanitary resistance management, and environmental law questions, complete with 2-4 sentence teaching explanations for correct answers and specific rationales for incorrect options.