Doutorado em Agronomia (EA)

URI Permanente para esta coleçãohttp://200.137.215.59/tede/handle/tde/181

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Agora exibindo 1 - 20 de 171

Culturas bioenergéticas na fitorremediação de níquel e cromo de solos derivados dos serpentinitos
(Universidade Federal de Goiás, 2026-02-20) Tempesta, Izamara Fonseca; Severino, Maico Roris; http://lattes.cnpq.br/2546008836929749; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Leandro, Wilson Mozena; Lana, Marcos Alberto; Oliveira Júnior, Juarez Patrício de; Calil, Francine Neves; Souza, Eli Regina Barboza de
Embargo
Mecanismos associados à interação Meloidogyne enterolobii e genótipos de Capsicum spp. resistente e suscetível
(Universidade Federal de Goiás, 2026-03-05) Souza, Daniela Domingos de; Rocha, Mara Rúbia da; http://lattes.cnpq.br/4660306671671575; Rocha, Mara Rúbia da; Pinheiro, Jadir Borges; Boiteux , Leonardo Silva; Santiago, Débora Cristina; Filippi, Marta Cristina Corsi De
Embargo
Inativação fotodinâmica das sementes, técnicas de conservação e anatomia dos frutos de mangaba em desenvolvimento
(Universidade Federal de Goiás, 2026-02-26) Patrocinio, William Cezar Trindade do; Souza, Eli Regina Barboza de; https://lattes.cnpq.br/7641431808466123; Pilon, Lucimeire; Tôrres, Flávio Alves da; https://lattes.cnpq.br/1713250447051507; Silva, Flávio Alves da; Pilon, Lucimeire; Gonçalves, Leticia de Almeida; Dias, Fernanda Martins; Bernardes Neto, José Feliciano
Mangaba is a fruit with potential for exploration. However, some information about its biology is unknown, and there are also obstacles to its consolidation in the market and the propagation of the species. This study is divided into chapters with different objectives. The first and second chapters present a general introduction and a literature review of the main topics covered in the experimental chapters, ranging from the general characteristics of the species to post-harvest conservation techniques, seed health quality, and fruit anatomy. Chapter three aims to anatomically characterize the pericarp of the fruit of Hancornia speciosa Gomes var. gardneri, found in the Brazilian Cerrado, during its development to maturity. The results detail important structures related to the survival and perpetuation of the species, as well as aspects of the fruit's post-harvest quality. In this sense, new information is described in the anatomical characterization of the fruit, making this study fundamental for understanding the biology of the species. Chapter four aims to determine whether photodynamic inactivation and immersion in sodium hypochlorite are effective in reducing pathogens in seeds. This study involves three experimental parts: seeds immersed or not in 1% sodium hypochlorite to evaluate the occurrence of endophytic fungi; in vitro inactivation with methylene blue and toluidine blue irradiated with LED light to assess the mortality of the pathogens found in the previous experiment; and the physiological quality of seeds treated with the saniti zers used in the other two experiments regarding germination, germination speed index, first germination count, primary root protrusion, seedling length, and seedling fresh and dry weight. The results show that 1% sodium hypochlorite and inactivation with methylene blue and toluidine blue are effective in fungal control in mangaba seeds, eliminating up to 100% of the fungi without compromising physiological quality. The fifth chapter aims to evaluate the effects of hydrocooling on the preservation of mangaba fruits stored at ambient and refrigerated conditions. The parameters evaluated include mass loss, soluble solids, titratable acidity, soluble solids/titratable acidity ratio, pH, firmness, vitamin C content, luminosity, chromaticity, and hue angle. The results show that storage temperature and the time spent immersing the fruit in ice water influence the effect of hydrocooling, and it is not possible to extend the shelf life of mangabas. Mangabas can be stored at 5°C and 10°C for 12 days. Conversely, deterioration occurs after eight days at 25°C. The final chapter aims to evaluate the effects of the combination of hydrocooling and calcium chloride on mangaba storage. Mangabas were evaluated based on mass loss, soluble solids, titratable acidity, vitamin C, firmness, soluble pectin, and polygalacturonase. Storage temperature and low relative humidity influenced the effect of hydrocooling combined with calcium chloride, which was not effective in extending the shelf life of mangabas.
Uso da enxertia interespecífica como ferramenta para mitigar os efeitos do déficit hídrico em tomateiro
(Universidade Federal de Goiás, 2026-02-23) Silva, len Pereira de Paiva Bento da; Nascimento, Abadia dos Reis; Carneiro, Renê Gonçalves da Silva; Moraes, Moemy Gomes de; https://lattes.cnpq.br/5678716451015561; Moraes, Moemy Gomes de; Evangelista, Zeuxis Rosa; Melo, Hyrandir Cabral de; Amanda Magalhães Bueno; Souza, Eli Regina Barboza de
Embargo
Potencial agronômico do fosfato natural calcinado em sistemas de cultivo com feijão-comum, milho e soja em solos do cerrado goiano
(Universidade Federal de Goiás, 2025-12-08) Silva, Manoel Lucas da; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Leandro, Wilson Mozena; Oliveira , Carolina Brom Aki de; Santos, Tassia Tuane Moreira dos; Souza, Eli Regina Barboza de; Calil, Francine Neves
Embargado
Efeitos de agrotóxicos sobre Cordyceps javanica (Hypocreales: Cordycipitaceae): germinação, crescimento, persistência em folhas de soja e virulência a Bemisia tabaci (Hemiptera: Aleyrodidae)
(Universidade Federal de Goiás, 2025-09-25) Sousa, Larissa Moreira de; Quintela, Eliane Dias; http://lattes.cnpq.br/7426637066408803; Quintela, Eliane Dias; Boaventura, Heloiza Alves; Godinho, Karina Cordeiro Albernaz; Bezerra, Jadson Diogo Pereira; Pereira , Jaqueline Magalhães
Embargado
Estratégias de manejo para otimização da produção e qualidade de microverdes produzidos em ambiente controlado
(Universidade Federal de Goiás, 2025-08-22) Sousa, Kedinna Dias de; Guedes, Ítalo Moraes Rocha; http://lattes.cnpq.br/7797265989685138; Pilon, Lucimeire; http://lattes.cnpq.br/9725565352475852; Silva, Flávio Alves da; http://lattes.cnpq.br/1713250447051507; Guedes, Ítalo Moraes Rocha; http://lattes.cnpq.br/7797265989685138; Pilon, Lucimeire; http://lattes.cnpq.br/9725565352475852; Purquerio, Luis Felipe Villani; http://lattes.cnpq.br/5391975384650292; Rosa, Márcio; http://lattes.cnpq.br/7161811963507494; Silva, Fábia Barbosa da; http://lattes.cnpq.br/4603673677020665
Embargado
Fungo micorrízico orquidoide Waitea circinata no controle de Meloidogyne spp. nas culturas do tomate e soja
(Universidade Federal de Goiás, 2025-08-21) Faria, Denner Robert; Araújo, Leila Garcês de; http://lattes.cnpq.br/3488880262260757; Carneiro, Renê Gonçalves da Silva; http://lattes.cnpq.br/4088543783074333; Rocha, Mara Rúbia da; http://lattes.cnpq.br/4660306671671575; Rocha, Mara Rúbia da; http://lattes.cnpq.br/4660306671671575; Santiago, Débora Cristina; http://lattes.cnpq.br/6351034014282018; Pinheiro, Jadir Borges; http://lattes.cnpq.br/4664314218191352; Marques, Eder; http://lattes.cnpq.br/4325914129692944; Filippi, Marta Cristina Corsi de; http://lattes.cnpq.br/0029536556461484
Embargado
Macaúba (Acrocomia aculeata): análise cienciométrica, caracterização morfofisiológica e estratégias para produção de mudas
(Universidade Federal de Goiás, 2025-08-22) Neri, Luciene Machado da Silva; Souza, Eli Regina Barboza de; http://lattes.cnpq.br/7641431808466123; Souza, Eli Regina Barboza de; http://lattes.cnpq.br/7641431808466123; Vieira, Muza do Carmo; ttp://lattes.cnpq.br/3892400622755069; Souza, Jaqueline Lima da Conceição; http://lattes.cnpq.br/0969910887801284; Calil, Francine Neves; http://lattes.cnpq.br/2520537051838618; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937
Embargado
Diagnóstico dos fatores biofísicos e de manejo que influenciam a produtividade da soja no cerrado Goiano
(Universidade Federal de Goiás, 2025-06-06) Santos, Thaynara Garcia; Flores , Rilner Alves; http://lattes.cnpq.br/6161143914254137; Battisti , Rafael; http://lattes.cnpq.br/9350992609794419; Flores, Rilner Alves; http://lattes.cnpq.br/6161143914254137; Somavilla, André; http://lattes.cnpq.br/1931042200424802; antos, Elcio Ferreira dos; http://lattes.cnpq.br/5602211640158588; Marques, Letusa Momesso; http://lattes.cnpq.br/7154180150340351; Lopes, Arthur Gabriel Caldas; http://lattes.cnpq.br/5760902349480218
Embargada.
Desempenho de genótipos de soja tipo-alimento de tegumento colorido em cultivo orgânico e convencional e aplicação de grãos como conservas e drageados
(Universidade Federal de Goiás, 2016-03-31) Tassi, Adriana Luiza Wain; Caliari, Márcio; http://lattes.cnpq.br/3558164788327179; Vera, Rosângela; http://lattes.cnpq.br/1595946128237501; Soares Junior, Manoel Soares; http://lattes.cnpq.br/0920319108540253; Soares Junior, Manoel Soares; Souza , Eli Regina Barbosa de; Borges, Jácomo Divino; Bassinello, Pricila ZaczuK; Garcia, Marina Costa
The soybean [Glycine max (L.) Merrill] of colored tegument (yellow, brown and black) is indicated for human consumption and has been genetically improved, aiming at adding flavor, palatability and productivity. However, the food-type soybean market, as well as those of brown and black teguments are recent in Brazil. Consequently, soy-based food can be seen as an opportunity for the consumer market, as well as for the food industry. The objective of this work was to know more about these materials, regarding their productive performance in the organic and conventional systems in the Cerrado, and also to obtain information about their nutritional, functional, microbiological and sensory acceptance potential after canning and dragee processing. In the cultivation of organic soybean, twelve genetic materials were evaluated for the physiological, sanitary and chemical characteristics, being seven yellow tegument materials, two brown and three black. In conventional soybean cultivation, four materials were evaluated for their adaptation to the agronomic characteristics, physiological and sanitary qualities of the seeds. Food-type soybeans were evaluated with yellow, black and brown teguments, processed as preserves and as chocolate dragees. For all preserves, the objective was to verify the effect of maceration time and acid concentration. For the yellow soybean, the acetic acid was used in the brine (in relation to the grain mass) and for the brown and black soya beans, ascorbic acid. The effect was evaluated on the physical characteristics of the soybean preserves, through response surface methodology and composite central rotational design. In addition to evaluating the chemical, microbiological and sensorial characteristics of the selected preserve. For all reasons, the objective of this study was to evaluate the effect of the time of roasting in the microwave and the size of the grains of the food-type soybean for all the colors of tegument, yellow (BRSMG 790 A), black (line DF 06-81-1) and brown (BRM line 04-4382-4), yield, instrumental hardness, crispness and flavor of the toasted soybean core. In relation to the soybean cultivated in the organic system, nine of the evaluated genetic materials had good biological characteristics for soybean grain-type, with mass values of 1000 grains between 200 and 254 g. The genotypes presented satisfactory levels of protein between 37.4 and 43.1 g 100 g-1 (dry basis), and of isoflavones, between 101.8 and 190.8 mg 100 g-1 (defatted sample). The colored genotypes selected from organic cultivation and multiplied in the conventional system were yellow (BRSMG 790A), black (line DF 06-81-1) and brown (BRM 04-4382-4). These presented a cycle of 130 days and the height of the plant was considered adequate for mechanical harvesting. The BRM 04-4382-4 line showed the best results for height of insertion of the first pod (17.3 cm), number of pods with three grains (13.8 units), and stand on maturation of 14.9 plants per linear meter. The cultivar BRSMG 790A showed good adaptation to the region of Goiânia-GO, with a yield higher than those observed in Minas Gerais. As for processed grains, the presence of acetic acid in brine was detrimental to the quality of the yellow soybean preserves (BRSMG 790A). In contrast, the maceration time increased the moisture content and reduced the hardness of the grains. The preserve produced with maceration time of 100 min and zero concentration of acetic acid were selected, which presented lower hardness and loss of total solids in cooking water and higher content of total phenolic compounds and moisture in the grains. In this condition they 36 obtained values of 15.5 g 100 g-1 for protein and 7 g 100 g-1 for lipids. In both preserves the essential amino acid profile was not greatly affected by the processing, presenting amounts equivalent to that required as daily intake of children and adults. The selected yellow soybean preserved 36.8% of the antioxidant activity of the grains in natura. The preservation of black soybeans (line DF 06-81-1) and brown (BRM 04-4382-4) were favored by the ratio of maceration time and concentration of ascorbic acid in the brine, also presenting low loss of phenolic compounds in relation to the contents obtained in natura grain. The selected preserves of each color were obtained with maceration time of 50 min and ascorbic acid concentration of 0.15 g 100 g -1 , but for anthocyanin contents there were 100% losses, suggesting new studies for thermal treatments. As for the selection of the roasted core in microwaves, the best scores (flavor, crispness and hardness) were obtained for the large size grains (sieve 15) for all selected genetic materials. Resistant starch was not detected. But high levels of proteins and lipids were detected. All soybean preserves and dragees (yellow, brown and black) obtained were microbiologically stable products and had good sensory acceptance. Therefore, it can be concluded that the food-type soybean of tegument color can be grown in the cerrado, as well as its applicability, as soybean preserves and as chocolate soybeans dragees, because they have high potential of commercialization and are technologically viable.
Uso de esterco bovino em integração lavoura pecuária na recuperação de solos na agricultura familiar
(Universidade Federal de Goiás, 2025-02-20) Vieira, Renato Dusmon; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Leandro, Wilson Mozena; http://lattes.cnpq.br/9052207260053937; Oliveira Júnior, Juarez Patrício de; http://lattes.cnpq.br/3493497589009413; Matos Filho , Hélio Aparecido de; http://lattes.cnpq.br/8561847232571500; Souza , Eli Regina Barboza de; http://lattes.cnpq.br/7641431808466123; Calil , Francine Neves; http://lattes.cnpq.br/2520537051838618
Embargada,
Irrigação Autonôma Integrada Para Eficientização do Uso Da Água E Energia
(Universidade Federal de Goiás, 2025-02-27) Mendes, Andre Luiz Milhardes; Evangelista, Adão Wagner Pego; http://lattes.cnpq.br/5171893735359718; Alves Júnior, José; http://lattes.cnpq.br/3418524049655817; Alves Júnior , José; Souza, João Maurício Fernandes; Sandri , Delvio; Pena , Diogo da Silva; Casaroli, Derblai
The efficient use of water and energy are some of the main challenges of irrigated agriculture. On average in Brazil, irrigators spend around 10% of the total production cost on energy, and due to lack of correct management, they waste 20 to 30% of the water applied. There are many technologies available to increase the efficiency of both systems and management, one of which is irrigation automation. If, on the one hand, the automation of irrigation systems is still not widespread among small irrigators, it is quite widespread among those who produce in protected environments. However, correct irrigation management is still little adopted due to the lack of management integrated into the automation system. In large areas, especially irrigated by central pivot, irrigation management programs have been adopted more frequently. However, there is still an excessive expenditure of energy in pumping water, as pumping station engines are normally sized to meet the steepest point of the terrain, leaving the irrigation system constantly operating at maximum power, wasting energy. In this case, the technology that needs to be used is the frequency inverter in the electric motor. However, commercially available options are expensive, which limits access to this technology by irrigators. Thus, the objectives of this thesis were: 1) to develop a low-cost irrigation controller with integrated irrigation management based on information from soil and/or climate sensors, and its field validation in irrigation management for pepper crops in protected environment; 2) build a low-cost motor pump rotation control system, considering the variation in system pressure according to the variation in terrain unevenness, and validate the proposed system, in an area irrigated by a central pivot, evaluating the effects on the blade irrigation, uniformity of water application, and their consequences in millet cultivation. The studies were carried out in the laboratory and in the field at EA-UFG in Goiânia-GO, from 2022 to 2023. In study 1, pepper plants irrigated by the new controller produced 10.48% more flowers and 36.78% more peppers per plant, using 39.70% less water throughout the cultivation cycle, compared to the conventional controller. Thus, the new system is an important alternative for irrigation automation, with the advantage of integrated autonomous management and low cost. In study 2, there was an effective reduction of 8.11% in the engine's electrical energy consumption. The modernization cost was 36.87% lower compared to commercial automation. The fluctuation in the unevenness of the land altered the irrigation depth, but did not interfere with the uniformity of water applied, and consequently no difference was observed in the growth and productivity of millet plants. Therefore, this alternative modernization is a viable technical option for central pivot systems, and its viability increases as the terrain gradient increases.
Consórcios de rizobactérias multifuncionais: aplicações e eficiência na cultura do feijão-comum
(Universidade Federal de Goiás, 2024-12-11) Oliveira, Ana Paula Santos; Ferreira, Enderson Petrônio de Brito; http://lattes.cnpq.br/6292879655540619; Ferreira, Enderson Petrônio de Brito; Lacerda, Mabio Chrisley; Mirza, Cássia Cristina Rezende; Rabelo, Kassia Cristina de Caldas; Leandro, Wilson Mozena
Embargada.
Microrganismos multifuncionais como estratégia para suprir a demanda de fósforo na produção sustentável de grãos no cerrado
(Universidade Federal de Goiás, 2025-04-17) Cruz, Dennis Ricardo Cabral; Nascente, Adriano Stephan; http://lattes.cnpq.br/3194091518396388; Nascente, Adriano Stephan; Lacerda, Mabio Chrisley; Sousa, Cleiton Mateus; Lobo Junior, Murillo; Leandro, Wilson Mozena
Embargado
Eficiência agronômica de potencial remineralizador dkx na cultura de milho silagem
(Universidade Federal de Goiás, 2025-02-28) Teles, Thiago Augusto Sampaio; Brasil, Eliana Paula Fernandes; http://lattes.cnpq.br/7324619074753727; Cunha, Marcos Gomes da; http://lattes.cnpq.br/2006008625763742; Cunha, Marcos Gomes da; Cardoso, Aline Assis; Belo , Emiliane dos Santos; Santos, Tássia Tuane Moreira dos; Leandro, Wilson Mozena
Embargada
Baru: alporquia, potencial fisiológico e terapia fotodinâmica em sementes
(Universidade Federal de Goiás, 2025-01-20) Torres, Géssica Xavier; Souza, Eli Regina Barboza de; http://lattes.cnpq.br/7641431808466123; Souza, Eli Regina Barboza de; Vieira, Muza do Carmo; Souza, Jaqueline Lima da Conceição; Araújo, Ruth de Abreu; Calil, Francine Neves
Embargado.
Rizobactérias e silício no manejo da cultura do arroz de terras altas ao déficit hídrico e à brusone
(Universidade Federal de Goiás, 2025-03-10) Oliveira, Rodrigo Silva de; Lanna, Anna Cristina; http://lattes.cnpq.br/0661616367659826; Filippi, Marta Cristina Corsi de; http://lattes.cnpq.br/0029536556461484; Filippi, Marta Cristina Corsi de; Araujo, Leila Garces de; Siebeneichler, Susana Cristine; Schurt, Daniel Augusto; Marques, Eder
Rice (Oryza sativa L.) is one of the cereals with the highest potential for providing and maintaining human nutritional needs. Biotic factors (Magnaporthe oryzae) and abiotic factors (water deficiency) can compromise rice crops, such as diseases that reduce productivity and affect grain quality, as well as conditions of water stress. Additionally, the limited availability of Phosphorus (P) in the Cerrado soil stimulates the search for technologies such as phosphorus-solubilizing rhizobacteria and plant growth promoters to improve the acquisition of scarce minerals by plants and mitigate these stresses. The present study aimed to evaluate the combination of plant growth-promoting rhizobacteria (Serratia marcescens and Bacillus toyonensis) and silicon (Si) in managing upland rice crops under water deficit and blast stress. In the first study, S. marcescens showed potential to solubilize non-labile phosphorus and promote plant growth. Inoculation with S. marcescens increased root area by 61.5%, volume by 31.5%, and length by 101%. The presence of phosphorus solubilization halos around root segments confirmed its solubilizing action. Scanning electron microscopy (SEM) detected biofilms and microcolonies of the bacteria. Genome analysis revealed genes related to indole-3-acetic acid biosynthesis, phosphate solubilization, and biofilm production. In the second study, the combination of S. marcescens and B. toyonensis with silicon and non-labile phosphorus was tested under different osmotic pressures to evaluate resistance to water stress. The combination increased surface area: 27.5% (0 MPa), 20% (-2 MPa), and 18.5% (-4 MPa); root volume: 150% (0 MPa), 58% (-2 MPa), and 55% (-4 MPa); total length: 67.5% (0 MPa) and 116.5% (-2 MPa); thick roots: 158.5% (-2 MPa) and 25.5% (-4 MPa); very fine roots: 18.5% (-2 MPa) and 30% (-4 MPa). The presence of halos around microbiolized plant segments confirmed phosphorus solubilization. SEM revealed biofilms, microcolonies, and glycocalyx under different osmotic conditions. In the third study, rhizobacteria combined with Si suppressed blast and mitigated the effects of drought in rice grown in a greenhouse. Key results include: rice productivity increased by 72% under water deficit and 35% under irrigation; reduction of panicle blast (PBS) by 60% under water deficit and 77% under irrigation; reduction of blast on the auricle and ligule by 44% under water deficit and 70% under irrigation; positive modulation of antioxidant enzymes and defense-related proteins. In the fourth study, the impact of bioagents and silicon on suppressing blast and promoting rice growth under low phosphorus availability was analyzed in two field crops. Bioagents and silicon reduced leaf blast (LBS) by 77.93% and panicle blast (PBS) by 62.37%. Additionally: the Area Under the Disease Progress Curve (AUDPC) was reduced by 77.3% (LBS) and 60.6% (PBS); grain yield in the first crop (E1) was 25% higher than in the second crop (E2). In E2, productivity increased by 71.95% (2435.72 kg/ha) compared to the control. The combination of bioagents and silicon improved biochemical and enzymatic indicators, reducing the impact of blast and optimizing rice productivity in low soil fertility conditions. In the fifth study, the interaction between rhizobacteria and silicon promoted growth, nutrient absorption, and rice productivity under low phosphorus availability. The results were: suppression of blast, reduction by 77.93% (LBS) and 62.37% (PBS); reduction of AUDPC: 77.3% (LBS) and 60.6% (PBS); increased nutrient absorption: phosphorus (45%); potassium (21%); iron (94%); manganese (50%); zinc (10%). Improvement in plant growth: height increased by 10%; number of tillers by 19%; number of panicles by 43%; aerial biomass increased by 49%; reduction of panicle sterility by 49%; productivity increased by 72% in E2 (2435.72 kg/ha) compared to the control. Therefore, based on the results of the studies, we can conclude that rhizobacteria and silicon can be integrated into the management of blast and upland rice productivity.
Caracterização morfoagronômica de acessos do gênero Capsicum da coleção de pimentas da Escola de Agronomia da UFG
(Universidade Federal de Goiás, 2024-12-09) Dias, Fernanda Martins; Melo, Patrícia Guimarães Santos; Reis Nascimento, Abadia dos; http://lattes.cnpq.br/6270103344297514; Reis Nascimento, Abadia dos; Sousa, Cleiton Mateus; Faria, Raquel Cintra de; Silva, Flavio Alves da; Campos, Luiz Fernandes Cardoso
Embargado.
Sensor multiespectral embarcado em sistema de aeronave remotamente pilotada para manejo de nitrogênio em milho e feijão-comum
(Universidade Federal de Goiás, 2024-03-21) Silva, Diogo Castilho; Ferreira , Manuel Eduardo; http://lattes.cnpq.br/4498594723433539; Carvalho , Maria da Conceição Santana; http://lattes.cnpq.br/0717306636933723; Madari, Beata Emoke; http://lattes.cnpq.br/0302689027695014; Madari, Beata Emoke; Ferreira , Manuel Eduardo; Carvalho, Maria da Conceição Santana; Moreira , Alisson Neves Harmyans; Ruiz, Luis Fernando Chimelo
This comprehensive study aims to advance the field of rapid phenotyping by leveraging unmanned aerial vehicles (UAVs) and multispectral imagery to enhance the assessment of critical plant traits, with a particular focus on nitrogen content and yield optimization. Building upon a systematic review of 41 peer-reviewed papers from 13 countries, on the first chapter, we synthesized existing knowledge on the association between vegetation indices (VIs) and plant traits across different growth stages of 11 major crop species. Drawing insights from experiments conducted over two consecutive years, we investigated the correlation between VIs, leaf nitrogen content (LNC), and yield at key growth stages of corn and common bean. The second chapter examined the efficacy of VIs such as Green Normalized Difference Vegetation Index (GNDVI), Green to Near–Infrared Band Ratio (GN) and Transformed Chlorophyll Absorption in Reflectance Index (TCARI) in predicting nitrogen rates and grain yield in corn at V6, V11, and R1 stages. The third chapter focused on common bean growth, integrating selected VIs with texture data derived from UAV-based multispectral images to accurately estimate LNC across critical growth stages (V4, R5, and R7). Notably, the Green Normalized Difference Vegetation Index (GNDVI) and Modified Chlorophyll Absorption in Reflectance Index (MCARI) emerged as robust predictors of LNC, with the addition of texture metrics enhancing accuracy, especially when combined with machine learning models like random forest (RF) and support vector machine (SVM). Our findings underscore the potential of UAV-based multispectral imagery coupled with advanced analytical techniques to revolutionize phenotyping efforts, facilitating more precise monitoring of key plant traits and optimizing crop management strategies for better use of inputs and maintenance of yield over time.

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