Cleverton Timóteo de Assunção, Daniel Haraguchi Santos, Greissi Tente Giraldi, A. D. Lopes, J. Francisco, J. C. Guerreiro
{"title":"POPULATION FLUCTUATION OF SUCKING INSECTS IN IRRIGATED AND NON-IRRIGATED COTTON CROPS","authors":"Cleverton Timóteo de Assunção, Daniel Haraguchi Santos, Greissi Tente Giraldi, A. D. Lopes, J. Francisco, J. C. Guerreiro","doi":"10.32404/rean.v10i2.7253","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7253","url":null,"abstract":"In the cotton crop (Gossypium hirsutum L.), there is a complexity of pests that appear systematically, thus significantly reducing crop yield; and their population fluctuation is strongly influenced by meteorological conditions that result in a greater or lesser density of these insects. Thus, this work aimed to evaluate the population fluctuation of insect pests with sucking feeding behavior in an area with and without irrigation in the cotton plant under second-harvest conditions. The experiment was developed at the State University of Maringá - Campus of Umuarama. In the experimental area, grid meshes of 10 × 10 m were demarcated, forming plots of 100 m², resulting in a total of 64 points in the irrigated area and 42 points in the non-irrigated area. The sampling points were demarcated in the center of each grid where three randomly selected plants were sampled. Samplings were carried out weekly, from 37 to 122 days after the emergence (DAE) of cotton, examining the aerial part of the plant, to observe the presence of aphids (Aphis gossypii), thrips (Frankliniella schultzei), and whitefly (Bemisia tabaci). The non-irrigated area provided the highest population peaks of whiteflies and thrips. On the other hand, the irrigated area had a higher incidence of aphids. However, with the increase in the population of ladybugs, the incidence of pests reduced significantly, showing the efficiency and importance of the control carried out by natural predators.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46879594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Carvalho, J. M. Alves, Thais Gonçalves Veloso, Ritiane Souza Alcântara, Matheus Vinícius Abadia Ventura, Hellen Regina Fernandes Batista Ventura
{"title":"DIFFERENT PHOSPHORUS DOSES IN GRAIN SORGHUM UNDER CERRADO CONDITIONS, GOIÁS, BRAZIL","authors":"F. Carvalho, J. M. Alves, Thais Gonçalves Veloso, Ritiane Souza Alcântara, Matheus Vinícius Abadia Ventura, Hellen Regina Fernandes Batista Ventura","doi":"10.32404/rean.v10i2.7039","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7039","url":null,"abstract":"Sorghum bicolor is an important grain species used for food and feed production, where P is a key element/nutrient in grain production. The effect of increasing phosphorus doses to grain sorghum in Cerrado soil with sandy texture and low fertility in Cerrado conditions was evaluated. The study was conducted at the Pântano Farm, Jataí, Goiás, Brazil. The sorghum cultivar used was AG 1085. The doses of 0 (control), 40, 80, 120, and 160 kg ha-1 of P2O5 were used, whose source was triple superphosphate 46% of P2O5, with five replications each, designed in random blocks. The evaluated variables were stem length, stem diameter, leaf area, shoot dry mass, leaf phosphorus content, nutrient accumulation, fertilization efficiency, chlorophyll a, and chlorophyll b. For the variables shoot dry mass in (g plant-1), leaf phosphorus content, dry mass expressed in (kg ha-1), and chlorophyll b (CFI), the effect for the application of P doses in cultivar had a linear effect. The analysis of variance of the regression showed a quadratic effect for the variables stem length, stem diameter, leaf area, and phosphorus use efficiency, and for chlorophyll a (CFI), showing a maximum point at the best dose and best values of the variables. The application of Phosphorus influenced the development of the grain sorghum cultivar. The 129 kg ha-1 of P2O5 had the highest efficiency of phosphorus fertilization corresponding to 82.02%.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47000230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Romário De Mesquita Pinheiro, Evandro José Linhares Ferreira, Gizele Ingrid Gadotti, Ruan Bernardy, Ednéia Araújo dos Santos, Rafael Rico Timm
{"title":"CHARACTERISTICS OF THE PHYSICAL PROPERTIES OF SEEDS AND REPRODUCTIVE ASPECTS OF Paullinia stellata Radlk","authors":"Romário De Mesquita Pinheiro, Evandro José Linhares Ferreira, Gizele Ingrid Gadotti, Ruan Bernardy, Ednéia Araújo dos Santos, Rafael Rico Timm","doi":"10.32404/rean.v10i2.7258","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7258","url":null,"abstract":"Paullinia stellata is found in anthropogenic places and lowland forests, yet little information about their reproductive characteristics is known. This study aimed to determine the physical properties of seeds and the characteristics of their reproductive aspects. Racemes, fruits, and seeds were measured and weighed. The physical properties of the seeds were determined using three-dimensional data. A descriptive statistic was applied for racemes and fruits, and a statistic of small samples was conducted for the physical properties. The results showed low magnitude variations for variables analyzed in both parameters. The physical properties of the seeds are relatively moderate variations from low oscillations. Fruit maturity is detected by the opening of the endocarp exposing the seed, but it presents early and late fruit with asynchronous maturation. This study was conducted only on a single plant and observed asynchronous fruits within the same raceme.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46848737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Augusto Henrique Pires Gaiotto, Sebastião Ferreira Lima, Eduarda Samara Santos, Lincoln Lara Ferreira, Eduardo Pedroso Ferreira, Guilherme Slaviero
{"title":"Nicotinamida, Azospirillum brasilense e mistura de fitohormônios como bioestimulantes em milho","authors":"Augusto Henrique Pires Gaiotto, Sebastião Ferreira Lima, Eduarda Samara Santos, Lincoln Lara Ferreira, Eduardo Pedroso Ferreira, Guilherme Slaviero","doi":"10.32404/rean.v10i2.7082","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7082","url":null,"abstract":"Os bioestimulantes são produtos capazes de melhorar o desempenho da cultura do milho, resultando em maiores produtividades de grãos. Nesse sentido, o objetivo do trabalho foi avaliar o efeito da aplicação foliar de nicotinamida, A. brasiliense e fitohormônios sintéticos aplicados como bioestimulantes na cultura do milho. Foi utilizado o delineamento experimental em blocos casualizados, com oito tratamentos e quatro repetições. Os tratamentos foram constituídos pela aplicação isolada ou combinada de nicotinamida na concentração de 800 mg L-1 água, Azospirillum brasilense na dose de 500 mL ha-1 e mistura de fitohormônios na dose de 500 mL ha-1. Foram avaliadas características de crescimento, componentes de produção e produtividade de grãos do milho. A utilização isolada da mistura de fitohormônios favoreceu a cultura do milho, promovendo aumento de 24,3, 29,2 e 21,2%, na massa de grãos por espiga, massa de mil grãos e produtividade de grãos, respectivamente. A produtividade de grãos atingida com esse tratamento foi de 8155 kg ha-1. O maior valor para índice de clorofila foliar foi obtido com o uso isolado de A. brasiliense. A nicotinamida isolada e a mistura dos bioestimulantes não foram favoráveis para as variáveis avaliadas, porque não superaram o controle. De toda forma, não prejudicaram o rendimento das variáveis.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48393792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, André Felipe Moreira Silva, Rafaela Alenbrant Migliavacca, Willian Felipe Larini, Rogério Kosinski, Marcelo Katakura
{"title":"Incremento na eficácia de herbicidas no controle de plantas daninhas devido a aplicação sequencial de glufosinate + saflufenacil","authors":"Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, André Felipe Moreira Silva, Rafaela Alenbrant Migliavacca, Willian Felipe Larini, Rogério Kosinski, Marcelo Katakura","doi":"10.32404/rean.v10i2.7125","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7125","url":null,"abstract":"É notória a eficácia de glufosinate + saflufenacil no controle de plantas daninhas, mas qual o incremento da eficácia de controle da primeira aplicação de herbicidas devido à aplicação sequencial, ou ainda quais seriam as melhores misturas de herbicidas na primeira aplicação com a aplicação sequencial de glufosinate + saflufenacil? Objetivou-se avaliar a eficácia de herbicidas, seguidos ou não da aplicação sequencial de glufosinate + saflufenacil, no controle de Conyza spp. (buva) e Commelina benghalensis (trapoeraba) no período de entressafra, anteriormente à semeadura da soja. O experimento foi conduzido em 2020, em Palotina, Paraná (PR), utilizado delineamento em blocos casualizados, com quatro repetições. Os tratamentos foram dispostos em arranjo fatorial (19 x 2), utilizados 19 níveis para a primeira aplicação, compostos pela aplicação isolada ou em misturas de glyphosate, glufosinate, carfentrazone, saflufenacil, dicamba e 2,4-D. O segundo fator foi representado pela aplicação, ou não, em sequencial de glufosinate + saflufenacil. A aplicação sequencial incrementou a eficácia de todos os tratamentos no controle de trapoeraba, independentemente dos herbicidas utilizados na primeira aplicação. A aplicação de glufosinate + saflufenacil foi eficaz no controle da buva, seja na primeira ou na aplicação sequencial. A aplicação única em manejo de entressafra, antecedendo a soja, não é a indicação mais viável. Destaca-se a importância das misturas de saflufenacil com carfentrazone no controle de trapoeraba, e com dicamba, no controle de buva.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47901257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Angelita Gude Butzke, Rychaellen Silva de Brito, Romeu De Carvalho Andrade Neto, Aureny Maria Pereira Lunz, Sergio Da Silva Fiuza
{"title":"Produção de mudas de açaizeiro solteiro submetidas a doses de nitrogênio e potássio","authors":"Angelita Gude Butzke, Rychaellen Silva de Brito, Romeu De Carvalho Andrade Neto, Aureny Maria Pereira Lunz, Sergio Da Silva Fiuza","doi":"10.32404/rean.v10i2.7316","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7316","url":null,"abstract":"Mediante a importância que a espécie Euterpe precatoria exerce frente ao mercado, atrelado a poucos estudos referente a fase inicial da cultura, objetivou-se avaliar a produção de mudas de açaizeiro solteiro (Euterpe precatoria Mart.) submetidas a doses crescentes de nitrogênio e potássio. As mudas foram arranjadas em delineamento em blocos casualizados em esquema fatorial 5x5, sendo o primeiro fator as doses de nitrogênio (0, 15, 30, 45 e 60 mg dm-3 de N) e o segundo de potássio (0, 40, 80, 120 e 160 mg dm-3 de K), aplicados de forma parcelada, 20, 40 e 40%. Foram avaliados a altura da planta (PH), diâmetro do coleto (SD) e número de folhas ativas (NL) aos 90, 180, 240 e 300 dias após a repicagem bem como o parcelamento ideal mediante os dados obtidos. Também foram realizadas avaliações da massa seca do estipe (EDM), folha (LDM), parte aérea (SDM), raiz (RDM) e total (TDM) aos 300 dias após a repicagem e estabelecida a relação entre PH/SD e SDM/TDM. Os dados foram submetidos a análise univariada e análise de regressão. Foi observado que a interação entre N x K não foi significativa, apresentando, portanto, o efeito isolado de ambos. Conclui-se que as doses de K influenciam o diâmetro do coleto aos 180 e 240 dias assim como a relação PH/SD. O N apresenta respostas linear crescente em quase todas as variáveis, exceto PH/SD e recomenda-se o parcelamento de N nas proporções de 30%, 30% e 40% para a produção de mudas até 300 dias após repicagem.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48461163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Conceição Paula Bandeira Rufino, S. R. Nogueira, Cleyton Silva de Araújo, Anderson José Danielsson Rossi, Romeu De Carvalho Andrade Neto, Aureny Maria Pereira Lunz, Paulo Eduardo França de Macedo
{"title":"CHEMICAL CONTROL OF Colletotrichum gloeosporioides ON SEEDLINGS OF SINGLE ASSAI PALM","authors":"Conceição Paula Bandeira Rufino, S. R. Nogueira, Cleyton Silva de Araújo, Anderson José Danielsson Rossi, Romeu De Carvalho Andrade Neto, Aureny Maria Pereira Lunz, Paulo Eduardo França de Macedo","doi":"10.32404/rean.v9i4.7264","DOIUrl":"https://doi.org/10.32404/rean.v9i4.7264","url":null,"abstract":"Anthracnose (Colletotrichum gloeosporioides) is the main disease affecting single assai palm seedlings and, therefore, a limiting factor to the production of quality seedlings. So far, there are no fungicide recommendations for the control of C. gloeosporioides in Euterpe precatoria. Thus, this study aimed to investigate the action of fungicides, such as pyraclostrobin + fluxapyroxad, as a possible alternative for controlling anthracnose in single assai palm seedlings. The experiment was installed in the nursery at Embrapa Acre, in a randomized block design, with seven treatments (0 – 0.155 – 0.187 – 0.218 – 0.250 – 0.281 – 0.312 μl of fungicide), with four replications of five plants. Evaluations were conducted for ten months regarding seedling height, stem diameter, number of leaves, shoot dry mass, root dry mass, total dry mass, and Dickson Quality Index. A visual scale ranging from 1 to 9 was used to assess the severity of the disease. The data were submitted to analysis of variance and regression analysis. Under the study conditions, the application of the active ingredient pyraclostrobin + fluxapyroxad reduced anthracnose severity by an average of 36.94% in single assai palm, providing better quality seedlings in the nursery.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43408301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jessivaldo Rodrigues Galvão, Ismael De Jesus Matos Viégas, Marcos Antônio Souza dos Santos, Mauro Junior Borges Pacheco, Antônia Benedita da Silva Bronze, Hugo Manoel Santos Costa
{"title":"ECONOMIC ANALYSIS AND GENERATION OF CERTIFICATES OF REDUCED EMISSIONS IN CUPUASSU TREES IN BELÉM, STATE OF PARÁ","authors":"Jessivaldo Rodrigues Galvão, Ismael De Jesus Matos Viégas, Marcos Antônio Souza dos Santos, Mauro Junior Borges Pacheco, Antônia Benedita da Silva Bronze, Hugo Manoel Santos Costa","doi":"10.32404/rean.v10i2.7049","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7049","url":null,"abstract":"The objective of the work was to quantify the plant biomass and analyze its potential for generating Reduced Emission Certificates - CERs in the cupuassu tree crop. For the purpose of economic analysis, all costs and revenues involved in the activity and the estimated cash flow for a 25-year plan were raised. Based on the cash flow, the Net Present Value, the Internal Rate of Return, and the sensitivity analysis were calculated, varying the levels of the main economic variables. The carbon stock in the cupuassu plantation at 25 years old was 14,901 t C ha-1. The estimated carbon stock for planting cupuassu at 25 years was 54.68 t C ha-1, corresponding to 393 CERs/ha. It is concluded that cupuassu is a crop capable of storing carbon in its biomass for an extended period of time.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43523769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"GROWTH AND DEVELOPMENT OF COTTON CULTIVATED AFTER Urochloa spp.","authors":"G. Asmus, Fernando Mendes Lamas","doi":"10.32404/rean.v10i2.7298","DOIUrl":"https://doi.org/10.32404/rean.v10i2.7298","url":null,"abstract":"No-tillage systems (NTSs) are generally known for their beneficial effects, whether on soil attributes or the yield of the target crop. For instance, research has explored the benefits of growing target crops, such as soybean or cotton, on soil previously occupied by a cover crop. However, fewer studies have investigated the potential negative implications of NTSs. Since, certain cover crops can release exudates harmful to other plants, there is a need to fill this knowledge gap. To this end, this study used four experiments to investigate the effects of two species of Urochloa on cotton germination, plant emergence, and biomass production. In the first two experiments, cotton germination was evaluated by placing seeds on paper rolls moistened with different concentrations of root washings of Urochloa plants cultivated for 45 days in tubes kept in a greenhouse, and desiccated with or without glyphosate. In the other two experiments, the emergence and biomass production of cotton were evaluated, which was sown in pots where two species of Urochloa were previously grown and subsequently desiccated or not with glyphosate, and managed in three ways: a) the entire plant of Urochloa spp. was kept in the pot (shoots and roots in the soil), b) only the aerial parts of Urochloa spp. were kept on the soil surface, and c) only the roots of Urochloa spp. were kept in the soil. Cotton seed germination was negatively affected by Urochloa spp. root washings. Both the emergence percentage and emergence speed index of the cotton plants were negatively affected when only the leaves of Urochloa spp. were kept in the soil with and without glyphosate desiccation. No adverse effect of the treatments (pre-cultivation and management of Urochloa spp.) on the production of cotton shoot and root biomass was observed.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48545746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Caione, Luana Marques Campos, Willian Tsuyoshi Kume, Guilherme Ferreira Ferbonink, Daniele Fátima De Oliveira Caione
{"title":"TOLERANCE OF MARANDU GRASS TO EXCESS IRON AND MANGANESE","authors":"G. Caione, Luana Marques Campos, Willian Tsuyoshi Kume, Guilherme Ferreira Ferbonink, Daniele Fátima De Oliveira Caione","doi":"10.32404/rean.v10i1.7027","DOIUrl":"https://doi.org/10.32404/rean.v10i1.7027","url":null,"abstract":"In soaked soils there is an increase in the availability of iron and manganese. Thus, it becomes important to investigate the tolerance levels of plants to excess of these nutrients. The objective was to evaluate the tolerance of Urochloa brizantha cv. Marandu cultivated in nutrient solution with different levels of iron and manganese. The experimental design was completely randomized with seven treatments and four replications. The treatments consisted of a nutrient solution and consisted of: 1- adequate concentration of Fe (8.22 mM) and Mn (2.05 mM); 2– Fe, four times the adequate concentration; 3– Fe, eight times the adequate concentration; 4– Mn, four times the adequate concentration; 5– Mn, eight times the adequate concentration; 6– Fe and Mn, four times the appropriate concentration, and; 7– Fe and Mn, eight times the appropriate concentration. The variables evaluated were visual diagnosis (symptomatology), shoot height, root volume, Fe and Mn content in shoots and dry mass production. Grass plants were not tolerant to excess Fe and Mn. The excess of nutrients promoted less development of the root system, with a reduction in volume and dry mass, and the treatment with the highest dose of nutrients resulted in the lowest values. Grass plants were sensitive to the increase in nutrient concentrations, showing reductions in total dry mass production of 55% for treatment with the application of the highest concentration of nutrients in relation to the adequate dose of Fe and Mn.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42294780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}