Brazilian Agricultural Research Corporation

A Proof-of-Concept Use of Unmanned Aerial Vehicle for Autonomous Person Detection and Tracking in Solar Farms

Unmanned Aerial Vehicle (UAV) technology has rapidly advanced, enabling the execution of increasingly complex autonomous tasks. This work presents a proof-of-concept autonomous surveillance framework utilizing a low-cost UAV for indoor monitoring as an initial step toward the sur...

3D-printed polymeric cryogel for tetracycline adsorption

The removal of emerging contaminants from aqueous systems remains a significant environmental challenge. Among the adsorbent materials explored for water treatment, cryogels based on natural polymers have emerged as promising candidates due to their interconnected macroporous str...

Can Temperature and UV Exposure Alter the Antimicrobial Properties of the Essential Oils? An Investigation of Origanum vulgare , Cymbopogon citratus , Syzygium aromaticum , and Lippia sidoides

Abstract Essential oils (EOs) are natural compounds widely applied in agriculture, post-harvest preservation, food processing, and human health due to their strong antimicrobial potential. However, the effects of postextraction physical treatments on their chemical and biological...

Tree Components in Integrated Crop–Livestock–Forest Systems: Silvicultural Management, Wood Production, Timber Quality, and Greenhouse Gas Mitigation

Integrated Crop–Livestock–Forest (ICLF) systems have emerged as a key strategy for sustainable agricultural intensification by simultaneously enhancing productivity, ecosystem services, and climate resilience in tropical environments. This review synthesizes current knowledge on...

Comparative Analysis of Intermuscular Bones in Five Characiform Species and Their Early Development in Tambaqui (Colossoma macropomum)

Intermuscular bones (IBs) are spicule-like, ossified structures located in the myosepta of muscles on either side of the vertebrae that are unique to several orders of teleost fishes, including Order Characiformes, for which research on the characteristics of IBs is limited. We i...

Water Quality Indices for Irrigation and Drinking Water Supply: The Importance of Use-Specific Assessment

Water quality indices are generally developed for specific water uses, but direct comparisons of indices designed for public water supply and irrigation using the same monitoring dataset remain limited. This study evaluated surface water quality in the Federal District (FD), Braz...

Proposed Economic Threshold for Diceraeus melacanthus (Dallas) in Maize Under an Early Intercrop Cultivation System

Abstract The Antecipe® system, in which maize is sown between soybean rows while soybean plants are still in the reproductive stage, reduces the production cycle of the soybean-maize crop system and, consequently, mitigate climatic risk for second-crop maize. However, the coexist...

Effects of a maternal bovine appeasing substance at dry-off on dairy cow behavior following dry-off

ABSTRACT Objective The primary objective was to determine whether administration of maternal bovine appeasing substance (MBAS) at abrupt dry-off influenced rumina-tion time. The secondary objectives were to evaluate its effects on eating time and activity during the first 14 d af...

Treasures of the Serra da Jiboia (Bahia, Brazil): a new species of Racinaea and an overview of the local Bromeliaceae flora

Serra da Jiboia, located in the south‐central region of Bahia, represents an important ecotone between the Atlantic Forest and the Caatinga and harbors high floristic diversity and numerous endemic species. The Bromeliaceae family, well represented in the region, stands out for i...

Non-thermal plasma engineering of CuO/Cu2O nanostructures on copper mesh for tunable selectivity in electrochemical CO2 reduction

Abstract The rising levels of atmospheric CO₂ have exceeded the capacity of the natural carbon cycle, driving interest in electrocatalytic CO₂ reduction as an environmental and energy solution. Copper-based tandem electrocatalysts remain the most investigated catalysts due to the...

Climacteric and Non-Climacteric Ripening Patterns of Melons with Focus on Carbohydrate Metabolism and Osmotic Potential

This study investigated the differences between ripening patterns of two homozygous lineages of melons, yellow A5, a non-climacteric inodorus, and Charentais C1, a climacteric cantalupensis, regarding the physiological processes related to postharvest quality with a focus on carb...

Probabilistic pre-harvest intervals for cyproconazole in green coconut production in Brazil: a Level IV fugacity model with Monte Carlo analysis

Abstract The coconut palm ( Cocos nucifera L.) fruits continuously, and Brazilian growers apply the triazole fungicide cyproconazole via endotherapy without an established pre-harvest interval, creating a food-safety gap. We coupled a Level IV fugacity model with Gompertz growth...

Maternal DNA repair safeguards genome stability during the oocyte-to-embryo transition

Abstract De novo mutations are a major source of genetic variation and disease risk, yet the developmental timing and mechanisms underlying their origin require further investigation. While germ cells have traditionally been considered the primary source of these mutations, incre...

Biogas Production from the Anaerobic Co-Digestion of Elephant Grass Juice and Cattle Wastewater: Batch and Semi-Continuous Performance in Anaerobic Reactors

Considering the limited information available on the use of elephant grass juice (EGJ) as a liquid co-substrate, this study aimed to evaluate its feasibility and biogas production potential for anaerobic co-digestion with dairy cattle wastewater (DCW), focusing on substrate ratio...

Trophectoderm biopsy and vitrification: survival, oxidative stress and cell count in bovine embryos

CONTEXT: Trophectoderm (TE) biopsy combined with embryo vitrification is increasingly being used; however, concerns remain regarding its effects on embryo survival and physiological stability after warming. AIMS: We aimed to evaluate whether TE biopsy performed prior to vitrifica...

Regulation in ecological systems: an organizational approach

The term “regulation” is often used in biology to refer to the means by which a system keeps or returns to a certain state after perturbation. Feedback mechanisms and the propagation of the perturbation through a network of constitutive components are commonly associated with thi...

Green-assisted extraction of babassu (Attalea speciosa) mesocarp starch: impact of multi-enzymatic and physical strategies on multi-scale structure and techno-functional properties

Abstract Babassu coconut is predominantly found in Brazil and primarily exploited for the high-value kernel oil. This industry generates large amount of babassu mesocarp (23% of the fruit), an underutilized source of non-conventional starch. However, the complex polysaccharide ma...

Ruminal Fermentation, Methanogenic Archaeal Diversity, and Metabolomic Responses to Urochloa brizantha Extracts in Sheep

Background: Phytogenic feed additives are being explored as alternatives to conventional rumen modulators, yet their effects on the ruminal ecosystem remain insufficiently characterized when assessed only through conventional fermentation parameters. This study evaluated the effe...

Fast adsorption of Mn2+ and Zn2+ on commercial LTA zeolite: kinetics, equilibrium, and preliminary reuse assessment

Abstract Commercial LTA-type zeolite was evaluated for the adsorption of Mn 2+ and Zn 2+ from aqueous solutions, with emphasis on the relationship between framework properties and adsorption behavior. Despite its very low BET surface area, the zeolite showed rapid and highly effi...

A banana susceptibility gene underlying fusarium wilt: validation as a target for disease resistance

Abstract Background Fusarium wilt, caused by the soil-borne fungus Fusarium oxysporum f. sp. cubense , remains the principal constraint on banana production, particularly for the widely cultivated cultivar ‘Prata-Ana’ (AAB) in Brazil. Given the limited efficacy of conventional co...