Impacts of passion fruit woodiness disease (Cowpea Aphid-Borne Mosaic Virus) on single-leaf gas exchange of Passiflora edulis.
Marco Antônio da Silva Vasconcellos, Wallace de Paula Bernado, Ellen Moura do Vale, Anne Reis Santos, Guilherme Augusto Rodrigues de Souza, Weverton Pereira Rodrigues, Eliemar Campostrini
Department of Plant Science, Institute of Agronomy, Federal Rural University Federal of Rio de Janeiro, BR 465, km 7, Seropédica, RJ 23890-000, Brazil
Plant Physiology Laboratory, LMGV, Agricultural Science and Technology Center, State University of North Fluminense, Av. Alberto Lamego, 2000, Campos dos Goytacazes, RJ 28013-602, Brazil
Center of Agricultural, Natural and Literary Sciences, State University of the Tocantina Region of Maranhão (UEMASUL), Estreito, MA, Brazil
Abstract
Passion fruit woodiness disease (PWD) is primarily caused by potyviruses (Cowpea Aphid-Borne Mosaic Virus) and is considered the most economically important and a limiting factor for passion fruit production in Brazil. Understanding the effects of the infectious process on the host is one of the goals of parasitism physiology. The experiment was conducted at the commercial panting in Rio de Janeiro state, Brazil, with 10 healthy plants of yellow passion fruit (Passiflora edulis) [control (CTL) leaf], cv. FB200 with 7 months of age (beginning of fruit production), and 10 plants with PWD were selected. Leaves of field-grown passion fruit plants infected with PWD were selected to determine its influence on single-leaf gas exchange. Leaf stomatal conductance, transpiration and net CO2 assimilation rate were reduced by PWD infection. Negative effects on single-leaf gas exchange in the yellow passion fruit supported our initial hypothesis that PWD cause impacts on stomatal conductance, transpiration, and net CO2 assimilation rate. These results suggest that reduced growth, yield, and fruit quality in PWD-infected passion fruit plants is caused, at least partially, by reduced single-leaf gas exchange.
Received: 07/09/2024 | Revised: 08/10/2024 | Accepted: 20/12/2024
Pages 220-224 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p146
……………………………………………………………………………………………………………………………………………………………………………
Evaluating fertilizer effects on growth, yield, and nutritional value of Tiger Nut (Cyperus esculentus L.) in Ghana
Samuel Novor*, Kwadwo Gyasi Santo, Khalid Aziz Abdul, James Owusu-Kwarteng, Kwabena Atakora, Felix Eyahanyo
Department of Horticulture and Crop Production, School of Agriculture and Technology, University of Energy and Natural Resources, Sunyani P.O. Box 214, Bono Region, Ghana
Abstract
This study assessed the effects of organic and inorganic fertilizers, both individually and in combination, on the mineral composition, yield, and soil chemical properties of Cyperus esculentus (tiger nut) tubers. The experiment was carried out over three growing seasons in the forest-savanna transition zone, where the soil is classified as Acrisol. A 2 x 4 factorial arrangement within a Randomized Complete Block Design (RCBD) was employed, comparing two varieties of tiger nut (brown and black) under four fertilization treatments: no fertilizer (control), 2,000 kg ha⁻¹ poultry manure, 300 kg ha⁻¹ NPK 15:15:15, and a combination of 1,000 kg ha⁻¹ poultry manure + 150 kg ha⁻¹ NPK 15:15:15. The findings indicated that the two tiger nut varieties responded similarly across all measured parameters. The application of poultry manure, both alone and in combination with NPK 15:15:15, significantly improved soil properties, particularly calcium, sodium, hydrogen, and aluminum levels, across all seasons. Additionally, the combined treatment of poultry manure and NPK 15:15:15 consistently enriched the tubers with essential nutrients such as phosphorus, potassium, iron, manganese, copper, and zinc throughout the study period. The sole use of poultry manure enhanced the levels of phosphorus and potassium in the nuts across all seasons. In conclusion, the combined application of poultry manure and NPK 15:15:15 significantly increased tiger nut yield, improved soil nutrient content, and enhanced the nutritional quality of the nuts compared to the control and other treatments. Therefore, this combined fertilization approach is recommended for farmers as it effectively boosts both the yield and quality of tiger nuts, providing a sustainable option for soil fertility management.
Received: 15/11/2024 | Revised: 15/01/2025 | Accepted: 17/01/2025
Pages 225-235 | Read Article| Full Text PDF| Supplementary Data PDF| https://doi.org/10.21475/ajcs.25.19.03.p202
……………………………………………………………………………………………………………………………………………………………………………
Assessment of fruit quality of sweet orange trees grafted on different rootstocks through Mixed Models (REML/BLUP)
Lusiane de Sousa Ferreira*, Moises Zucoloto, Vinicius de Souza Oliveira, Renan Garcia Malikouski, Leonardo Lopes Bhering, Dimmy Herllen Silveira Gomes Barbosa
Universidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatu, SP, Brazil, 18610-034
Universidade Federal do Espírito Santo, Alegre - ES, Brazil, 29.500-000
Universidade Federal do Espírito Santo, Alegre - ES, Brazil, 29.500-000
Universidade Federal de Viçosa, Viçosa, MG, Brazil, 36570-900
Universidade Federal de Viçosa, Viçosa, MG, Brazil, 36570-900
Embrapa Mandioca e Fruticultura, Cruz das Almas - BA, Brazil, 44380-000
Abstract
The objective was to relate, based on quality characteristics, the potential of fifty-nine (59) sweet orange cultivars grafted onto the 'Sunki Tropical' tangerine rootstock and the 'Trifoliata' citrandarin hybrids 'San Diego', 'Riverside', and 'Indio', using 236 combinations with mixed models. The orchard was established in 2015. The following parameters were evaluated at stage III (fruit maturation): fruit weight (g), juice yield (JY, %), total soluble solids content (TSS, °Brix), titratable acidity (TA, g of citric acid per L-1), and the Ratio (TSS/TA). The mixed model methodology (REML/BLUP) was used to estimate/predict the fruit maturation parameters for different scion and rootstock combinations. The scion and rootstock combinations differed statistically for total soluble solids, titratable acidity, ratio, and juice yield. The rootstocks 'San Diego', 'Riverside', and 'Indio', and the 'Sunki Tropical' mandarin induced juice yields (55.05% to 60.05%), soluble solids (10.70°Brix to 12.38°Brix), and titratable acidity (0.50% to 0.66% citric acid) in sweet orange trees that were within quality standards. In the ranking, the combinations, in order, of 'Pera CNPMF D-9'/'Riverside', 'Pera Selection CNPMF C-32'/'Riverside', 'Pera Selection CNPMF D-3'/'San Diego', 'Pera Selection Olímpia'/'Sunki Tropical', 'Valência Selection CNPMF'/'Sunki Tropical', 'Diva'/'Sunki Tropical', 'Melrosa'/'Índio', 'Pera CNPMF D-6'/'Sunki Tropical', and 'Pera C-21'/'Riverside', scion and rootstock, respectively, stood out. These are combinations with greater potential for commercial exploitation because they meet quality standards.
Received: 01/09/2024 | Revised: 16/10/2024 | Accepted: 28/01/2025
Pages 236-245 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p210
……………………………………………………………………………………………………………………………………………………………………………
No-tillage effects in bean cultivation and the application of fomesafen on soil dynamics
Heytor Lemos Martins*, Vanesca Korasaki, Pedro Gomes Peixoto, Eduardo da Silva Martins, Vitor Adriano Benedito, Arthur Nardi Campalle, Gabriela de Sousa Barbosa, Pedro Luís da Costa Aguiar Alves
School of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Jaboticabal, São Paulo, 14884-900, Brazil
University of the State of Minas Gerais (UEMG), Frutal, 38202-436, Brazil
Abstract
Soil quality is defined as the measure of its capacity to perform vital ecological functions for agricultural development. With the expansion of cultivated areas and even their exposure to long periods without plant presence, issues such as erosion and soil nutrient depletion can arise. Therefore, practices like crop rotation or the incorporation of green manures have gained traction in soil preparation for large-scale cultivation. The common bean plant, being a member of the legume family, possesses such capabilities, being a potential nitrogen fixer and contributing to soil maintenance. Thus, this study aimed to assess the effects of cultivating common beans in fallow areas with sugarcane straw and fomesafen application. The experiment was conducted in an area with Eutrophic-Dystrophic Red Latosol. The experimental design was a randomized block design in a 4x2 factorial system, with four replicates, considering leaves straw presence (0, 1, 5, and 10 t ha-1) and two types of herbicide application (with and without application), totaling 8 experimental treatments and 32 plots. Soil chemistry, soil enzymatic activity, leaf area, plant dry matter, and productivity were evaluated. Higher straw quantities in the system improved soil enzymatic activity dynamics and soil chemistry. Plant development was correlated with higher soil enzymatic activity. Thus, it is concluded that in fallow areas: 1) the straw enhances soil quality and common bean productivity; 2) The herbicide (fomesafen) application has no impact on soil dynamics; 3) chemical, physical, and biological soil variables show worse conditions in treatments without straw, regardless of herbicide application; 4) enzymatic activity (β-glucosidase) is higher in the interaction between straw and plants, responding better to soil dynamics compared to physical and chemical variables, resulting in higher common bean productivity. It is recommended to maintain or increase straw coverage to improve soil quality and common bean productivity, with the safe use of the herbicide fomesafen, as it does not negatively affect soil dynamics.
Received: 03/09/2024 | Revised: 06/10/2024 | Accepted: 10/01/2025
Pages 246-257 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p231
……………………………………………………………………………………………………………………………………………………………………………
Comparative analysis of nutrient uptake in Solanum melongena L. grown in sandy clay loamy soil mixed with different doses of Polyvinylpyrrolidone
Nisha Tewatia, Shagufta Jabin*, Sona Gandhi, Jamal A. Khan
Department of Applied Sciences (Chemistry), School of Engineering and Technology, Manav Rachna International Institute of Research and Studies, Faridabad, Haryana, India
Department of Applied Science and Humanities, University Polytechnic Aligarh Muslim University, Aligarh, Uttar Pradesh, India
ORCID ID - https://orcid.org/0000-0002-8544-1774
ORCID ID (Nisha Tewatia)- https://orcid.org/0000-0003-4952-6081
Abstract
Polyvinylpyrrolidone (PVP), a water-soluble polymer, is known to amend the soil’s physicochemical properties and can also act as a potential soil conditioner while alanine, a non-polar and neutral amino acid, is a good source of nitrogen (N) for plants. The current study concluded that using PVP and alanine in balance improved essential nutrient uptake in eggplant (Solanum melongena L.) and fostered the plant growth. The experiment comprised 6 treatments in a randomized block design (RBD) in triplicate. The treatments were labeled as T0 (control; 0 mg PVP + 0 M alanine/kg soil), T1 (0 mg PVP + 0.1 M alanine/kg soil), T2 (250 mg PVP + 0.1 M alanine/kg soil), T3 (500 mg PVP + 0.1 M alanine/kg soil/Kg soil), T4 (750 mg PVP + 0.1 M alanine/kg soil) and T5 (1000 mg PVP + 0.1 M alanine/kg soil). The integrated use of PVP and alanine significantly increased the growth parameters, macronutrients, and micronutrient uptake in eggplant due to enhanced soil-amino acid interactions and the nutrients that are released as organic matter breaks down. Among different treatments, T5showed maximum growth of the plant which might be due to the highest uptake of nitrogen (N), magnesium (Mg), Iron (Fe), nickel (Ni), copper (Cu) and Zinc (Zn). Additionally, a change in sandy clay loamy soil’s chemical properties was also observed during the study. From T0 to T5, the soil pH was decreased while electrical conductivity was increased. Scanning electron microscopy (SEM) was used to analyze the morphological changes in the soil’s structure.
Received: 06/11/2024 | Revised: 07/01/2025 | Accepted: 06/02/2025
Pages 258-265 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p267
……………………………………………………………………………………………………………………………………………………………………………
Utilizing electromagnetic fields for enhancing root germination of cassava Kasetsart 50 varieties
Taweesab Chaiyarak*, Naris Sinsiri, Teerawong Laosuwan, Phirayot Khaengkhan
Department of Agricultural Technology, Faculty of Technology, Mahasarakham University, 44150, Thailand
Department of Physics, Faculty of Science, Mahasarakham University, 44150, Thailand
Abstract
This study aimed to investigate the optimal duration and intensity of electromagnetic field exposure for enhancing root development in cassava (Kasetsart 50). A 5 x 5 factorial experiment with four replications was conducted in a greenhouse over a 30-day period. Two factors were examined: stimulation duration (0, 15, 30, 45, and 60 minutes) and electromagnetic field intensity (10, 20, 30, 40, and 50 mT). Various root morphological parameters were measured, including total root length, total surface area, root length/volume ratio, root volume, number of root tips, mean root diameter, root width, and surface area. Results indicated that both stimulation duration and electromagnetic field intensity significantly influenced root development. Notably, the combination of 45 minutes and 40 mT, as well as 60 minutes and 10 mT, yielded the most favorable outcomes, including increased root tips, total surface area, root volume, and mean root diameter. Additionally, total root length exhibited a strong positive correlation with total surface area (r = 0.9847**), root length/volume ratio (r = 0.602**), and root volume (r = 0.4328*). Conversely, a negative correlation was observed between the number of root tips and root diameter (r = -0.2427), as well as between root diameter and root width (r = -0.0586).
Received: 12/12/2024 | Revised: 10/01/2025 | Accepted: 11/01/2025
Pages 266-273 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p279
……………………………………………………………………………………………………………………………………………………………………………
Temporal changes in basic cations in soils under cocoa cultivation in the Brazilian Atlantic forest
Ádson dos Santos Oliveira, José Olímpio de Souza Júnior, Júlio César Lima Neves, Dário Ahnert
Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Ilhéus, Bahia, Brazil,
Universidade Federal de Viçosa, Campus Universitário, Viçosa, Minas Gerais, Brazil
Abstract
Low base saturation causes abiotic stress in crops. However, it can be a significant factor for increasing yields when adjusted to appropriate levels. This study aimed to assess the temporal alterations of basic cations in two soil layers under cocoa tree cultivation in the Brazilian Atlantic Forest biome. For this purpose, a seven-year field experiment was established, consisting of 19 experimental areas (EAs), each of which received superficial applications of lime and agricultural gypsum. The changes on basic cations levels were measured at doses of 0.36-1.09 and 0.29-2.69 t ha-1 limestone and gypsum, respectively, after 0, 40, 52, 72, and 87 months of application. In the first two years, the cocoa trees were fertilized with the N-P-K 16-16-16 formula in doses of 640 and 1,025 kg, respectively, divided into four applications. Nutrition was done with monoammonium phosphate, urea, triple superphosphate and potassium chloride as source. The results suggests that in most EAs, lime did not affect Ca2+ and Mg2+ levels, consequently, causing no difference on the base sum and base saturation in the 0–20 cm layer. However, gypsum led to increase of Ca2+ levels in both soil layers, as well as an increase of Mg2+ and K+ levels in the 20–40 cm layer. Variations in K+ levels were associated with potassium fertilization. Cocoa producers should apply gypsum to enhance the chemical properties of poor soils by increasing exchangeable base levels at greater depths. This improvement promotes deeper root growth, enabling cocoa trees to access a larger soil volume and better withstand water stress during drought periods.
Pages 274-283 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p281
……………………………………………………………………………………………………………………………………………………………………………
Table grape ‘BRS Vitória’ yield performance, vigor, and quality as influenced by rootstocks in a subtropical region
Daniel Callili, Marco Antonio Tecchio, Camilo André Pereira Contreras Sánchez, Francisco José Domingues Neto, Filipe Pereira Giardini Bonfim, Marcelo de Souza Silva, Sarita Leonel, Giuseppina Pace Pereira Lima, Olivia Pak Campos
São Paulo State University (UNESP), School of Agricultural Sciences, Botucatu, São Paulo, Brazil
São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo, Brazil
Abstract
Given the growth of vine orchards to new areas and the need for diversification of scion and rootstock combinations in subtropical sites, selecting the right rootstock can bring significant benefits to the scions. Thus, the current study sought to determine the impact of rootstocks 'IAC 572' Jales, 'IAC 766 Campinas' and '1103 Paulsen' on the productive performance, vigor, and quality of 'BRS Vitória' grapevines grown under subtropical circumstances. The experimental design was a randomized block design, with three treatments (rootstocks), seven blocks, and three plants per plot, for a total of 63 grapevines. Over three summer seasons (2020, 2021, and 2022), production and vigor components (number of clusters per vine, production per vine, productivity, and pruning mass), physical-chemical properties of clusters and berries (number of berries, fresh mass, length, and width of clusters and berries, soluble solids, pH, titratable acidity, and maturity index, as well as the quantities of bioactive chemicals in the berries (phenols, flavonoids, and anthocyanins), were all assessed. The rootstocks had a significant influence on the majority of the factors studied. The results showed that increasing vigor of rootstock increased vine yield while decreasing the quantity of soluble solids and bioactive chemicals in grapes. The 'IAC 572' rootstock increased vigor and productivity, whereas grapes from plants grafted onto '1103P' exhibited higher amounts of soluble solids, phenols, flavonoids, and anthocyanins. Overall, the 'BRS Vitória' cultivar demonstrated high yield and quality. As a result, extending cultivation in subtropical locations emerges as an effective solution to meet the growing demand for seedless grapes.
Pages 284-291 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p288
……………………………………………………………………………………………………………………………………………………………………………
Enhancing efficiency in lowland rice farming: The role of gender, human capital, and agricultural practices
Karlina Muhsin Tondi, Alam Anshary, Effendy*
Department of Agriculture Economics, Agriculture Faculty of Tadulako University, Palu 94118, Indonesia
Department of Agrotechnology, Agriculture Faculty of Tadulako University, Palu 94118, Indonesia
ORCID: 0000-0002-0490-3122
Abstract
Rice has historically been very important for humans, especially in Asia, because human life has depended on the quantity and stability of rice production. Most of the rice was produced on a small scale, but small-scale agriculture was a source of inefficiency. Increased efficiency could help lowland rice farmers subsequently, increasing household income. This study was conducted as a survey, collecting data using a questionnaire. Data collected include farmer education, age, gender, farming experience, number of family members, farming scale, use of production inputs, prices of production inputs, participation of female farmers, use of semi-organic fertilizers, rice cultivation systems, and other data related to the objectives of the study. Using the DEA method (Data Envelopment Analysis), this study analyzed the efficiency of lowland rice farming in Indonesia. The results showed that there are inefficiencies in lowland rice farming in Indonesia. This implies that lowland rice farmers in Indonesia have the potential to increase their farming efficiency. Increased efficiency of lowland rice farming could be accomplished by the use of more superior seeds, access to extension services, and cultivation systems (semi-organic and inorganic). In addition, farmers with small-scale farming can join to become large-scale, and managers with less than elementary school education. They could access more counseling so that their experience and knowledge of rice farming increase. Male and female farmers were advised to further increase their available resources so that the efficiency of lowland rice farming could be improved. To increase farming efficiency and farmers' household incomes, the government could more often offer extensions to farmers in rural communities.
Received: 18/09/2024 | Revised: 11/01/2025 | Accepted: 20/01/2025
Pages 292-300 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p294
……………………………………………………………………………………………………………………………………………………………………………
Effectiveness of plant growth regulator fertilizers on the recovery of pepper plants under water stress conditions
Nguyen Viet Long, Dokmai Phommalueza, Phan Thi Hong Nhung, Chu Duc Ha, Nguyen Van Loc*
Faculty of Agronomy, Vietnam National University of Agriculture, Trau Quy Ward, Gia Lam District, Hanoi City, 131000, Vietnam
Student at Faculty of Agronomy, Vietnam National University of Agriculture, Trau Quy Ward, Gia Lam District, Hanoi City, 131000, Vietnam
Faculty of Agricultural Technology, University of Engineering and Technology, Vietnam National University Hanoi, Xuan Thuy Stress, Cau Giay District, Hanoi City, 131000, Vietnam
Abstract
This study examined the effects of three plant growth regulator fertilizers (Atonick, N3M, and Profarm) on the performance of black pepper (Piper nigrum) under various water stress conditions (drought, waterlogging, and control). Conducted in a greenhouse over a two-month period from June to July 2024 using sandy clay-loam soil, the study employed a Randomized Complete Block Design with ten replicates (each plant was used as a replicate) to measure growth parameters, such as plant height, number of leaves, branches, stem diameter, leaf area, fresh weight, and dry weight. Results showed that N3M significantly enhanced growth under drought stress, with plant height reaching 32.99 cm, leaf count 11.78, and dry weight 6.02 g after two weeks, compared to the control's 29.78 cm, 10.33 leaves, and 4.56 g, respectively. These findings confirm N3M's superior efficacy in improving black pepper growth under water stress. Compared to Atonick and Profarm, N3M’s balanced macronutrient and micronutrient content, including nitrogen, phosphorus, potassium, and trace elements of plants, played a crucial role in maintaining physiological functions and mitigating the adverse effects of environmental stress. The results suggest that targeted nutrient supplementation, particularly with N3M, can optimize black pepper's resilience under water stress conditions, contributing to better agricultural management practices in the face of climate change. Further research is recommended to explore the long-term impacts of these fertilizers across varying environmental conditions to enhance crop resilience more broadly.
Received: 08/12/2024 | Revised: 10/01/2025 | Accepted: 10/01/2025
Pages 306-309 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p306
……………………………………………………………………………………………………………………………………………………………………………
Yield efficiency analysis in a cocoa clonal orchard derived from reciprocal grafting
Esther Anokye*, Stephen Y. Opoku, Francis K. Padi
Cocoa Research Institute of Ghana, New Tafo, Akim, Ghana
ORCID: https://orcid.org/0000-0002-9196-1987
Abstract
Analysis of trunk cross-sectional area (TCSA) and yield components were conducted among six full-sib families, and among thirty-six clones established from reciprocal grafting using scions from ortet selection in the six families. The objective was to analyze how full-sib family traits impact rootstock and scion characteristics to attain high yield efficiency in grafted cacao orchards. The study included two experiments: experiment 1 had six cocoa genotypes tested as hybrids whereas experiment 2 involved evaluation of 36 rootstock/scion combinations derived from the six genotypes in the first experiment. Both experiments were laid out in RCBD with four replications. Stem diameter and yield data were measured over a 4-year period. Diallel analysis was effective in summarizing the relationship between the six genotypes, distinguishing among them either as effective rootstock and/or scion types. Significant general compatibility (GC) was observed for all traits studied, but specific compatibility was not significant for any trait. This suggests lack of interaction between rootstock and scion genotypes in the expression of the traits. Patterns of GC revealed the distinctive performance of CRG 0314, as being suitable both as a rootstock type and productive scion, reflecting the attributes of its full-sib counterpart. Two-way ANOVA similarly showed significant rootstock and scion main effects, but no significant interaction for any trait, emphasizing that a good rootstock would be suitable for any productive scion type. Clonal performance reflected full-sib family attributes. Full-sib family performance was evident in rootstock types particularly for TCSA, whereas the impact on scion was mostly for yield related traits. High yield efficiency was achieved by two pathways: scions of high yield potential on invigorating full-sib rootstock, or scions of high yield potential on low vigour rootstocks.
Received: 15/10/2024 | Revised: 22/01/2025 | Accepted: 18/02/2025
Pages 310-321 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p308
……………………………………………………………………………………………………………………………………………………………………………
Use of growth-promoting bacteria to maximize soybean yield
Larissa Alves de Castro Jocarelli Rossini, Leonardo Cesar Pradebon, Ivan Ricardo Carvalho, Jaqueline Piesanti Sangiovo, Murilo Vieira Loro, Amanda Maria Nascimento, Douglas de Castilho Gitti, Leandro Alves Freitas, Wilson Story Venancio, Luis Fernando Maranho Watanabe, Lays Garcia Meireles
Biotrop - Soluções Biológicas, Vinhedo, São Paulo, Brazil
Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijuí, RS, Brazil
Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
Abstract
The objective of this work was to evaluate the agronomic efficiency and viability of inoculants based on Paenibacillus azotofixans [CCTB10], Bacillus subtilis [CCTB04], Bacillus licheniformis [CCTB07] and Bacillus circulans [CCTB15], as growth promoters in soybean crops and their effects on the nutritional aspects of the crop when applied via sowing furrow. The experiment was conducted in five environments, Chapadão do Céu-GO, Chapadão do Sul-MS, Lavras-MG, Palmeira-PR, Maracaju-MS. The experimental design used was randomized blocks organized in a factorial scheme, with thirteen treatments referring to inoculants, and two modes of application (seed treatment and via sowing furrow), arranged in six replications. At 60 days after sowing, the shoot fresh weight (SFW, g) was measured in five plants per experimental unit. Nutritional analyzes on the leaves were carried out with the culture at R1 stage, with 15 leaves being sampled per experimental unit. Furthermore, the thousand grain weigh (TGW, g) was measured. The use of Paenibacillus azotofixans+ Bacillus circulans+ Bacillus licheniformis+ Bacillus subtilis, promotes increases in the shoot dry weight, thousand grain weight, grain yield, as well as in the potassium content in the grain. It can be used in seed treatment and in-furrow application.
Received: 24/10/2024 | Revised: 24/12/2024 | Accepted: 26/12/2024
Pages 322-331 | Read Article| Full Text PDF| https://doi.org/10.21475/ajcs.25.19.03.p219