Pub Date : 2023-12-31DOI: 10.32404/rean.v10i4.7683
F. G. Souza, José Vagner Silva, Taismara Inglesia Sampaio, Janaina Teixeira de Morais, Valdir Moura, Alan Ferreira Leite de Lima, W. Brito, Elyenayra Nogueira Pinheiro, Robson Vinício dos Santos, Milton César Costa Campos
Few studies have studied soil erodibility in areas that have undergone conversion processes from native forest to agricultural areas, especially in agricultural frontier regions. The present study aimed to evaluate soil erodibility in areas under citrus (Citrus sinensis L. Osbeck) and forest, using multivariate statistics and geostatistics in areas under different uses in Southern Rondônia, Brazil. A 42 × 30 m grid with regular spacing between sample points of 6 × 6 m was established for the studied native forest and citrus areas at depths of 0.00-0.20 m. At each sampling point, samples with preserved sod structure were collected at the evaluated depth for determination of soil texture and organic carbon, totaling 288 samples in the two studied areas. In the results it was observed that the area cultivated with citrus and under forest presented a greater predisposition of the soil to suffer erosion interril (Kiwepp), the citrus area also presented a greater susceptibility of the soil to suffer erosion in furrows (Krwepp), on the other hand, this area showed high values of critical shear stress, a fact that signals the resistance of the soil to the beginning of the erosive process. On the other hand, the forest area showed a greater predisposition to suffer erosion (K-factor), a fact possibly linked to the high values of silt and sand, which favored the present erodibility conditions.
{"title":"SOIL ERODIBILITY IN AREAS UNDER CITRUS (CITRUS SINENSIS L. OSBECK) AND FOREST IN RONDÔNIA, BRAZIL","authors":"F. G. Souza, José Vagner Silva, Taismara Inglesia Sampaio, Janaina Teixeira de Morais, Valdir Moura, Alan Ferreira Leite de Lima, W. Brito, Elyenayra Nogueira Pinheiro, Robson Vinício dos Santos, Milton César Costa Campos","doi":"10.32404/rean.v10i4.7683","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7683","url":null,"abstract":"Few studies have studied soil erodibility in areas that have undergone conversion processes from native forest to agricultural areas, especially in agricultural frontier regions. The present study aimed to evaluate soil erodibility in areas under citrus (Citrus sinensis L. Osbeck) and forest, using multivariate statistics and geostatistics in areas under different uses in Southern Rondônia, Brazil. A 42 × 30 m grid with regular spacing between sample points of 6 × 6 m was established for the studied native forest and citrus areas at depths of 0.00-0.20 m. At each sampling point, samples with preserved sod structure were collected at the evaluated depth for determination of soil texture and organic carbon, totaling 288 samples in the two studied areas. In the results it was observed that the area cultivated with citrus and under forest presented a greater predisposition of the soil to suffer erosion interril (Kiwepp), the citrus area also presented a greater susceptibility of the soil to suffer erosion in furrows (Krwepp), on the other hand, this area showed high values of critical shear stress, a fact that signals the resistance of the soil to the beginning of the erosive process. On the other hand, the forest area showed a greater predisposition to suffer erosion (K-factor), a fact possibly linked to the high values of silt and sand, which favored the present erodibility conditions.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"26 11","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130179","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}
Pub Date : 2023-12-20DOI: 10.32404/rean.v10i4.7345
A. Bondarenko
Currently, in modern world science, a large experimental material has been accumulated to search for new forms of nitrogen nutrition of plants and increase the use of nitrogen fertilizers to obtain sustainable crop yields, which is relevant in modern conditions. A science-based fertilizer system should ensure not only the production of planned crops at the lowest cost per unit of production, but also a systematic increase in soil fertility. The purpose of the study was to scientifically substantiate, develop and introduce into the production of agricultural techniques to increase the yield of grain and leguminous crops cultivated on irrigated lands of the North-Western Caspian Sea, which dropped out of active agricultural turnover. The field study was developed on the basis of existing zonal recommendations, complementing them with options for studied agro-receptions. Laying and conducting multifactorial field experiments in various edaphic conditions by the method of split divides was carried out in accordance with the method of B.A. Dospekhov, Fundamentals of Scientific Research in Agronomy. In order to increase the productivity of irrigated land removed from active agricultural turnover, an environmentally sound land use orientation should be envisaged, while maintaining high agricultural productivity.
{"title":"INTENSIVE TECHNOLOGIES FOR THE CULTIVATION OF WINTER CROPS IN VARIOUS EDAPHIC CONDITIONS","authors":"A. Bondarenko","doi":"10.32404/rean.v10i4.7345","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7345","url":null,"abstract":"Currently, in modern world science, a large experimental material has been accumulated to search for new forms of nitrogen nutrition of plants and increase the use of nitrogen fertilizers to obtain sustainable crop yields, which is relevant in modern conditions. A science-based fertilizer system should ensure not only the production of planned crops at the lowest cost per unit of production, but also a systematic increase in soil fertility. The purpose of the study was to scientifically substantiate, develop and introduce into the production of agricultural techniques to increase the yield of grain and leguminous crops cultivated on irrigated lands of the North-Western Caspian Sea, which dropped out of active agricultural turnover. The field study was developed on the basis of existing zonal recommendations, complementing them with options for studied agro-receptions. Laying and conducting multifactorial field experiments in various edaphic conditions by the method of split divides was carried out in accordance with the method of B.A. Dospekhov, Fundamentals of Scientific Research in Agronomy. In order to increase the productivity of irrigated land removed from active agricultural turnover, an environmentally sound land use orientation should be envisaged, while maintaining high agricultural productivity.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"61 5","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138994462","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}
Pub Date : 2023-12-18DOI: 10.32404/rean.v10i4.7149
Maria Janaina Lira Vital, A. Barbosa, D. Gomes, João Henrique Constantino Sales, Ariel Roxany da Silva Brasileiro
Management systems are crucial for soils functioning as a drain or source of greenhouse gas emissions. In this sense, among the alternatives for reducing the precursors of the greenhouse effect are integrated agricultural production systems, particularly Agroforestry Systems. These integrated systems maximize the use of biological cycles, soil, and animal waste, reducing agrochemicals and improving the condition of the rural populations involved. The present study aimed to evaluate the CO2 efflux in different land use types. The study was conducted in four agroecosystems: Forest (FO), Agroforestry Systems (AFS), Mandala (MD), and Degraded area (DA). To quantify the CO2 emanating from the soil, 10 mL of 0.5 N KOH aqueous solution is used and titrated using 0.1 N HCl, phenolphthalein, and 1% methyl orange as an indicator. The CO2 concentration from 5:00 am to 5:00 pm was lower. The lowest CO2 production occurred in FO (82.7 CO2 mg m-2 h-1), statistically differing from the other areas that obtained a CO2 rate higher than 140 mg m-2 h-1. As for kinetics, it was observed in all areas that the greatest release of CO2 during the day occurred at 7:00 am, and this release decreased as the soil temperature increased. The greatest release of CO2 and the highest temperatures occurred in DA, showing that these systems with anthropic modifications can be considered CO2 emitters however, systems closer to the natural ecosystem, such as the AFS, will store carbon in the soil, functioning as a carbon store. Therefore, to reduce CO2 emissions from agricultural activities, it is necessary to use systems that imitate natural ecosystems.
管理系统对于土壤作为温室气体排放的排泄物或来源至关重要。从这个意义上说，减少温室效应前体物的替代办法之一是综合农业生产系统，特别是农林业系统。这些综合系统最大限度地利用了生物循环、土壤和动物粪便，减少了农用化学品的使用，改善了相关农村人口的生活条件。本研究旨在评估不同土地利用类型的二氧化碳排放量。研究在四个农业生态系统中进行：森林 (FO)、农林系统 (AFS)、曼陀罗 (MD) 和退化地区 (DA)。为了量化从土壤中排出的二氧化碳，使用了 10 mL 0.5 N KOH 水溶液，并用 0.1 N HCl、酚酞和 1% 甲基橙作为指示剂进行滴定。上午 5:00 至下午 5:00 的二氧化碳浓度较低。粮农组织的二氧化碳产生量最低（82.7 二氧化碳毫克/米-2 小时-1），与其他二氧化碳产生量高于 140 毫克/米-2 小时-1 的地区存在统计学差异。在动力学方面，所有地区都观察到，一天中二氧化碳释放量最大的时间是上午 7 点，随着土壤温度的升高，释放量减少。二氧化碳的最大释放量和最高温度都出现在旱地，这表明这些经过人为改造的系统可被视为二氧化碳排放者，但更接近自然生态系统的系统（如美国农业部）会将碳储存在土壤中，起到碳储存的作用。因此，为了减少农业活动的二氧化碳排放，有必要使用模仿自然生态系统的系统。
{"title":"COMPARISON OF CARBON DIOXIDE EFFLUX IN DIFFERENT LAND USE TYPOLOGIES","authors":"Maria Janaina Lira Vital, A. Barbosa, D. Gomes, João Henrique Constantino Sales, Ariel Roxany da Silva Brasileiro","doi":"10.32404/rean.v10i4.7149","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7149","url":null,"abstract":"Management systems are crucial for soils functioning as a drain or source of greenhouse gas emissions. In this sense, among the alternatives for reducing the precursors of the greenhouse effect are integrated agricultural production systems, particularly Agroforestry Systems. These integrated systems maximize the use of biological cycles, soil, and animal waste, reducing agrochemicals and improving the condition of the rural populations involved. The present study aimed to evaluate the CO2 efflux in different land use types. The study was conducted in four agroecosystems: Forest (FO), Agroforestry Systems (AFS), Mandala (MD), and Degraded area (DA). To quantify the CO2 emanating from the soil, 10 mL of 0.5 N KOH aqueous solution is used and titrated using 0.1 N HCl, phenolphthalein, and 1% methyl orange as an indicator. The CO2 concentration from 5:00 am to 5:00 pm was lower. The lowest CO2 production occurred in FO (82.7 CO2 mg m-2 h-1), statistically differing from the other areas that obtained a CO2 rate higher than 140 mg m-2 h-1. As for kinetics, it was observed in all areas that the greatest release of CO2 during the day occurred at 7:00 am, and this release decreased as the soil temperature increased. The greatest release of CO2 and the highest temperatures occurred in DA, showing that these systems with anthropic modifications can be considered CO2 emitters however, systems closer to the natural ecosystem, such as the AFS, will store carbon in the soil, functioning as a carbon store. Therefore, to reduce CO2 emissions from agricultural activities, it is necessary to use systems that imitate natural ecosystems.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":" 27","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138995123","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}
Pub Date : 2023-11-23DOI: 10.32404/rean.v10i4.7470
João Flávio Floriano Borges Gomides, M. B. Martins, F. P. A. P. Bortolheiro, C. D. C. Seron, J. S. Salles, Eduardo Pradi Vendruscolo
Implementing a crop such as a soybean requires favorable sowing conditions so that uniform and healthy seedlings emerge. This study aimed to evaluate the yield of soybeans crop concerning the type of soil cover and sowing depth. The experiment was conducted at the State University of Mato Grosso do Sul - University Unit of Cassilândia. A Completely randomized design with four replications in a 3x5 factorial scheme was used. Three cropping systems (without soil cover, millet straw, and brachiaria straw) and five sowing depths (2, 4, 6, 8, and 10 cm) were evaluated. The emergence speed index, plant height, stem diameter, first pod insertion height, number of branches, number of pods per plant, number of grains per pod, and grain yield per plant were assessed. The highest yield per plant was obtained with millet straw and a sowing depth of 6 cm. It can be concluded that the sowing depth and type of straw influence the soybean grain yield.
{"title":"SOYBEAN GRAIN YIELD IS IMPACTED BY THE SOWING DEPTH AND THE TYPE OF SOIL COVER","authors":"João Flávio Floriano Borges Gomides, M. B. Martins, F. P. A. P. Bortolheiro, C. D. C. Seron, J. S. Salles, Eduardo Pradi Vendruscolo","doi":"10.32404/rean.v10i4.7470","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7470","url":null,"abstract":"Implementing a crop such as a soybean requires favorable sowing conditions so that uniform and healthy seedlings emerge. This study aimed to evaluate the yield of soybeans crop concerning the type of soil cover and sowing depth. The experiment was conducted at the State University of Mato Grosso do Sul - University Unit of Cassilândia. A Completely randomized design with four replications in a 3x5 factorial scheme was used. Three cropping systems (without soil cover, millet straw, and brachiaria straw) and five sowing depths (2, 4, 6, 8, and 10 cm) were evaluated. The emergence speed index, plant height, stem diameter, first pod insertion height, number of branches, number of pods per plant, number of grains per pod, and grain yield per plant were assessed. The highest yield per plant was obtained with millet straw and a sowing depth of 6 cm. It can be concluded that the sowing depth and type of straw influence the soybean grain yield.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"22 4","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139244123","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}
Pub Date : 2023-11-22DOI: 10.32404/rean.v10i4.7319
Wytalo Oliveira Lopes, Wilian Henrique Diniz Buso
O milho é uma cultura de grande importância socioeconômica, devido seu alto valor energético e utilização na alimentação humana e animal. Objetivou-se neste trabalho avaliar as características agronômicas da cultura do milho cultivada com fontes e doses de B. O delineamento experimental foi em blocos ao acaso, esquema fatorial 3x4 com três fontes de B (ácido bórico, bórax e ulexita) e quatro doses (0; 1,5; 3,0 e 4,5 kg ha-1), com quatro repetições por tratamento. O experimento foi realizado em 2 safras consecutivas. As variáveis analisadas foram: altura de planta, altura de inserção da primeira espiga, comprimento da espiga, número de fileiras de grãos por espiga, número de grãos por fileira, massa de mil grãos e produtividade. Os dados foram submetidos à análise de variância e as médias comparadas pelo Teste de Tukey a 5% de significância. Para comprimento da espiga houve interação entre os fatores no primeiro ano, na dose de 1,5 kg ha-1 o Ácido Bórico foi superior ao Boráx e Ulexita. Para produtividade houve diferença entre as fontes e doses nas duas safras e a Ulexita foi superior às demais fontes, pela análise de regressão a dose de 1,6 kg ha-1 apresentou maior produtividade na primeira safra, e a dose de 2,03 kg ha-1 na segunda safra. Para altura de planta, altura de inserção da primeira espiga, número de fileiras de grãos, número de grãos por fileira e massa de 1000 grãos não houve diferença entre as fontes e doses de B.
玉米是一种具有重要社会经济意义的作物，因为它具有高能量价值，可用于人类和动物营养。本研究旨在评估使用硼源和硼剂量种植玉米的农艺特性。实验设计为随机区组 3x4 因式方案，硼的来源有三种（硼酸、硼砂和lexite），剂量有四种（0；1.5；3.0 和 4.5 kg ha-1），每个处理有四次重复。试验连续进行了两次。分析的变量包括：株高、第一穗插入高度、穗长、每穗谷粒行数、每行谷粒数、千粒重和产量。对数据进行了方差分析，并在 5%的显著性水平上使用 Tukey 检验比较了平均值。在穗长方面，第一年各因素之间存在交互作用，硼酸在 1.5 千克/公顷的剂量下优于硼砂和 Ulexita。在产量方面，两次收获中不同来源和剂量之间存在差异，Ulexita优于其他来源。 根据回归分析，1.6 kg ha-1剂量在第一次收获中产量最高，2.03 kg ha-1剂量在第二次收获中产量最高。在株高、第一穗插入高度、谷粒行数、每行谷粒数和千粒重方面，硼源和剂量之间没有差异。
{"title":"DESEMPENHO AGRONÔMICO DE MILHO CULTIVADO COM FONTES E DOSES DE BORO","authors":"Wytalo Oliveira Lopes, Wilian Henrique Diniz Buso","doi":"10.32404/rean.v10i4.7319","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7319","url":null,"abstract":"O milho é uma cultura de grande importância socioeconômica, devido seu alto valor energético e utilização na alimentação humana e animal. Objetivou-se neste trabalho avaliar as características agronômicas da cultura do milho cultivada com fontes e doses de B. O delineamento experimental foi em blocos ao acaso, esquema fatorial 3x4 com três fontes de B (ácido bórico, bórax e ulexita) e quatro doses (0; 1,5; 3,0 e 4,5 kg ha-1), com quatro repetições por tratamento. O experimento foi realizado em 2 safras consecutivas. As variáveis analisadas foram: altura de planta, altura de inserção da primeira espiga, comprimento da espiga, número de fileiras de grãos por espiga, número de grãos por fileira, massa de mil grãos e produtividade. Os dados foram submetidos à análise de variância e as médias comparadas pelo Teste de Tukey a 5% de significância. Para comprimento da espiga houve interação entre os fatores no primeiro ano, na dose de 1,5 kg ha-1 o Ácido Bórico foi superior ao Boráx e Ulexita. Para produtividade houve diferença entre as fontes e doses nas duas safras e a Ulexita foi superior às demais fontes, pela análise de regressão a dose de 1,6 kg ha-1 apresentou maior produtividade na primeira safra, e a dose de 2,03 kg ha-1 na segunda safra. Para altura de planta, altura de inserção da primeira espiga, número de fileiras de grãos, número de grãos por fileira e massa de 1000 grãos não houve diferença entre as fontes e doses de B.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"145 ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250308","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}
Pub Date : 2023-11-01DOI: 10.32404/rean.v10i4.7742
Freddy Augustin Sabando-Ávila, Abimael Gomes da Silva, Wellington Jean Pincay Ronquillo, Felipe Rafael Garcés-Fiallos
Pineapple fruit production (Ananas comosus L. Merr.) is negatively affected by inhomogeneous natural flowering, but flowering can be exogenously induced by growth regulators such as Ethephon (2-chloroethylphosphonic acid), resulting in greater production and yield in this crop. Thus, this study aimed to evaluate the application of Ethephon and ethylene + activated carbon to increase flowering and the qualitative and yield components of pineapple. The experiment was set up in a randomized block design with three treatments and five replications (blocks). After checking that the variance of the data sets was homogeneous, they were subjected to analysis of variance. Subsequently, the difference between the means of the treatments was determined using the Tukey test (P ≤ 0.05). There was a significant difference in costs and gains between using and not using flowering inducers, representing a significant difference in the benefit-cost ratio (BCR). Therefore, the use of activated carbon + ethylene proved to be economically viable. We conclude that activated carbon associated with ethylene provided a higher percentage of flowering in pineapple fruit. However, this inducer and Ethephon were similarly effective in increasing yield in this crop.
{"title":"FLOWERING AND FRUIT PRODUCTION OF PINEAPPLE IMPROVE WITH ACTIVATED CARBON AND ETHYLENE","authors":"Freddy Augustin Sabando-Ávila, Abimael Gomes da Silva, Wellington Jean Pincay Ronquillo, Felipe Rafael Garcés-Fiallos","doi":"10.32404/rean.v10i4.7742","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7742","url":null,"abstract":"Pineapple fruit production (Ananas comosus L. Merr.) is negatively affected by inhomogeneous natural flowering, but flowering can be exogenously induced by growth regulators such as Ethephon (2-chloroethylphosphonic acid), resulting in greater production and yield in this crop. Thus, this study aimed to evaluate the application of Ethephon and ethylene + activated carbon to increase flowering and the qualitative and yield components of pineapple. The experiment was set up in a randomized block design with three treatments and five replications (blocks). After checking that the variance of the data sets was homogeneous, they were subjected to analysis of variance. Subsequently, the difference between the means of the treatments was determined using the Tukey test (P ≤ 0.05). There was a significant difference in costs and gains between using and not using flowering inducers, representing a significant difference in the benefit-cost ratio (BCR). Therefore, the use of activated carbon + ethylene proved to be economically viable. We conclude that activated carbon associated with ethylene provided a higher percentage of flowering in pineapple fruit. However, this inducer and Ethephon were similarly effective in increasing yield in this crop.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"30 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135373280","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}
Pub Date : 2023-10-31DOI: 10.32404/rean.v10i4.7421
Marina Gabriela Marques, Amanda Tavares da Silva, Anne Silva Martins, Natália Arruda, Katiane Santiago Silva Benett, Cleiton Gredson Sabin Benett
Objetivou-se neste trabalho avaliar a qualidade fisiológica de sementes de girassol, em função da adubação boratada e tempos de armazenamento. O trabalho foi desenvolvido no Laboratório de Sementes da Universidade Estadual de Goiás, Unidade Universitária de Ipameri. O delineamento experimental utilizado foi inteiramente casualizado, arranjado em esquema fatorial 6 x 6, com quatro repetições. O primeiro fator refere-se às doses de boro, as quais foram utilizadas seis doses (0, 1, 2, 3, 4 e 5 kg ha-1), aplicadas via solo manualmente utilizando como fonte de boro o ácido bórico (17%). O segundo fator refere-se aos tempos de armazenamento (pós-colheita, 2; 4; 6; 8 e 10 meses de armazenamento). As sementes utilizadas foram oriundas de plantas cultivadas na safrinha de 2017 e adubadas conforme os tratamentos com as doses de boro. Após a colheita foram realizadas as seguintes avaliações em cada tempo de armazenamento: teste de germinação, primeira contagem de germinação, envelhecimento acelerado, índice de velocidade de germinação, condutividade elétrica, peso de 1000 sementes e teste de tetrazólio. As doses de boro e tempo de armazenamento apresentaram influência positiva para a maiorias das variáveis analisadas, sendo que a dose mais adequada neste estudo foi entre 2 e 3 kg ha-1 de boro não afetando o tempo de armazenamento sobre a qualidade fisiológica de sementes.
本研究的目的是评价葵花籽的生理品质与硼酸盐施肥和贮藏时间的关系。这项工作是在goias州立大学的种子实验室进行的，Ipameri大学单位。试验设计为完全随机化，6 × 6析因，4个重复。第一个因素是硼的剂量，使用6个剂量(0、1、2、3、4和5 kg hm - 2)，以硼酸(17%)为硼源，通过土壤人工施用。第二个因素是贮藏时间(采后，2;4);6;储存8至10个月)。使用的种子来自2017年冬季种植的植物，并根据硼的剂量进行施肥。采收后，在每个贮藏时间进行发芽试验、第一次发芽计数、加速老化、发芽速度指数、电导率、1000粒重和四唑试验。硼的用量和贮藏时间对大多数变量都有积极的影响，本研究最适宜的硼用量为2 ~ 3 kg hm - 2，不影响贮藏时间对种子生理品质的影响。
{"title":"Influência da adubação boratada sobre o potencial fisiológico de sementes de girassol armazenadas","authors":"Marina Gabriela Marques, Amanda Tavares da Silva, Anne Silva Martins, Natália Arruda, Katiane Santiago Silva Benett, Cleiton Gredson Sabin Benett","doi":"10.32404/rean.v10i4.7421","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7421","url":null,"abstract":"Objetivou-se neste trabalho avaliar a qualidade fisiológica de sementes de girassol, em função da adubação boratada e tempos de armazenamento. O trabalho foi desenvolvido no Laboratório de Sementes da Universidade Estadual de Goiás, Unidade Universitária de Ipameri. O delineamento experimental utilizado foi inteiramente casualizado, arranjado em esquema fatorial 6 x 6, com quatro repetições. O primeiro fator refere-se às doses de boro, as quais foram utilizadas seis doses (0, 1, 2, 3, 4 e 5 kg ha-1), aplicadas via solo manualmente utilizando como fonte de boro o ácido bórico (17%). O segundo fator refere-se aos tempos de armazenamento (pós-colheita, 2; 4; 6; 8 e 10 meses de armazenamento). As sementes utilizadas foram oriundas de plantas cultivadas na safrinha de 2017 e adubadas conforme os tratamentos com as doses de boro. Após a colheita foram realizadas as seguintes avaliações em cada tempo de armazenamento: teste de germinação, primeira contagem de germinação, envelhecimento acelerado, índice de velocidade de germinação, condutividade elétrica, peso de 1000 sementes e teste de tetrazólio. As doses de boro e tempo de armazenamento apresentaram influência positiva para a maiorias das variáveis analisadas, sendo que a dose mais adequada neste estudo foi entre 2 e 3 kg ha-1 de boro não afetando o tempo de armazenamento sobre a qualidade fisiológica de sementes.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"79 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135927838","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}
A trapoeraba (Commelina spp.) é considerada um gênero tolerante ao glyphosate, apresentando controle reduzido a esse herbicida em estádios avançados. Assim, o objetivo do trabalho foi avaliar a eficácia de controle das associações de glyphosate com herbicidas de diferentes mecanismos de ação em Commelina benghalensis. O experimento foi conduzido, após a colheita do milho safrinha em 2018, em Palotina-PR. O delineamento experimental foi de blocos casualizados com 12 tratamentos (Testemunha, glyphosate + 2,4-D, glyphosate + 2,4-D (aminol 806), glyphosate + dicamba, saflufenacil + glyphosate, glyphosate + dicamba + saflufenacil, diclosulam + glyphosate + saflufenacil, glyphosate + dicamba + chlorimuron, glyphosate + dicamba + glufosinato, glyphosate + dicamba + diclosula, glyphosate + dicamba + (sulfentrazona + diuron) e glyphosate + dicamba + (imazetapir + flumioxazina) e 4 repetições. O controle de C. benghalensis foi avaliado por notas visuais aos 7, 14, 21 e 28 dias após a aplicação (DAA) e por meio da massa seca aos 28 DAA. Independente do tratamento, aos 7 DAA não houve controle eficaz. As notas foram crescentes ao longo do tempo, sendo que aos 28 DAA, os tratamentos glyphosate + 2,4-D para ambas as doses (1025+975 e 1080+1005); diclosulam + glyphosate + saflufenacil; glyphosate + dicamba + diclosulam e glyphosate + dicamba + (imazetapir + flumioxazina) foram os mais eficazes no controle e redução de massa seca, indicando ser potenciais associações no controle da trapoeraba.
{"title":"Eficácia de herbicidas aplicados em trapoeraba (Commelina benghalensis) na região oeste do Estado do Paraná","authors":"Matheus Moreira Perissato, Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, Willian Bosquette Rosa, Samara Moreira Perissato, Willian Felipe Larini","doi":"10.32404/rean.v10i4.7243","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7243","url":null,"abstract":"A trapoeraba (Commelina spp.) é considerada um gênero tolerante ao glyphosate, apresentando controle reduzido a esse herbicida em estádios avançados. Assim, o objetivo do trabalho foi avaliar a eficácia de controle das associações de glyphosate com herbicidas de diferentes mecanismos de ação em Commelina benghalensis. O experimento foi conduzido, após a colheita do milho safrinha em 2018, em Palotina-PR. O delineamento experimental foi de blocos casualizados com 12 tratamentos (Testemunha, glyphosate + 2,4-D, glyphosate + 2,4-D (aminol 806), glyphosate + dicamba, saflufenacil + glyphosate, glyphosate + dicamba + saflufenacil, diclosulam + glyphosate + saflufenacil, glyphosate + dicamba + chlorimuron, glyphosate + dicamba + glufosinato, glyphosate + dicamba + diclosula, glyphosate + dicamba + (sulfentrazona + diuron) e glyphosate + dicamba + (imazetapir + flumioxazina) e 4 repetições. O controle de C. benghalensis foi avaliado por notas visuais aos 7, 14, 21 e 28 dias após a aplicação (DAA) e por meio da massa seca aos 28 DAA. Independente do tratamento, aos 7 DAA não houve controle eficaz. As notas foram crescentes ao longo do tempo, sendo que aos 28 DAA, os tratamentos glyphosate + 2,4-D para ambas as doses (1025+975 e 1080+1005); diclosulam + glyphosate + saflufenacil; glyphosate + dicamba + diclosulam e glyphosate + dicamba + (imazetapir + flumioxazina) foram os mais eficazes no controle e redução de massa seca, indicando ser potenciais associações no controle da trapoeraba.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135780569","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}
Pub Date : 2023-10-06DOI: 10.32404/rean.v10i4.7544
Juliana De Oliveira, Jhonatah Albuquerque Gomes, Lorena Abdalla de Oliveira Prata Guimarães, Lorenza Bandeira de Paula, Joab Luhan Ferreira Pedrosa, Fábio Luiz De Oliveira
This study was carried out with the aim of evaluating the performance of vegetable production in different agrobiodiverse cropping systems, comparing two successive agroforestry systems (SAFS) with a non-tree vegetables polyculture. The experiment was conducted in an experimental design in randomized blocks, with three treatments and four replications. The treatments consisted of two SAFS with biological diversity: one SAFS with fruit trees (SAFS-F) and another with conilon coffee (SAFS-C), in addition to the non-tree vegetables polyculture (SC-H). The results showed that, on average, the agroforestry systems had a lower performance than the non-tree vegetables polyculture. However, the vegetables submitted to the non-tree polyculture and to the agroforestry system with fruit trees had a better vegetative growth, while the vegetables cultivated in agroforestry system with coffee did not show satisfactory results in the evaluated parameters. This study contributes to the development of sustainable agricultural production technologies, seeking solutions to mitigate the effects of climate change on agriculture.
{"title":"POLYCULTIVATION AND AGROFORESTRY SYSTEMS IMPACT THE VEGETATIVE GROWTH OF VEGETABLES","authors":"Juliana De Oliveira, Jhonatah Albuquerque Gomes, Lorena Abdalla de Oliveira Prata Guimarães, Lorenza Bandeira de Paula, Joab Luhan Ferreira Pedrosa, Fábio Luiz De Oliveira","doi":"10.32404/rean.v10i4.7544","DOIUrl":"https://doi.org/10.32404/rean.v10i4.7544","url":null,"abstract":"This study was carried out with the aim of evaluating the performance of vegetable production in different agrobiodiverse cropping systems, comparing two successive agroforestry systems (SAFS) with a non-tree vegetables polyculture. The experiment was conducted in an experimental design in randomized blocks, with three treatments and four replications. The treatments consisted of two SAFS with biological diversity: one SAFS with fruit trees (SAFS-F) and another with conilon coffee (SAFS-C), in addition to the non-tree vegetables polyculture (SC-H). The results showed that, on average, the agroforestry systems had a lower performance than the non-tree vegetables polyculture. However, the vegetables submitted to the non-tree polyculture and to the agroforestry system with fruit trees had a better vegetative growth, while the vegetables cultivated in agroforestry system with coffee did not show satisfactory results in the evaluated parameters. This study contributes to the development of sustainable agricultural production technologies, seeking solutions to mitigate the effects of climate change on agriculture.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134943927","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}
Pub Date : 2023-09-14DOI: 10.32404/rean.v10i3.7553
Shailesh Rao Agari, Manoj Vishal, Anjana Krishnan
The current study evaluated the prediction of the yield of wheat crops in the Bagalkot district of Karnataka State, India. The study aimed to provide crop yield predictions to help farmers optimize their cultivation and marketing strategies. The model used various independent variables, such as temperature, humidity of air, and water resources, to predict growth in the yield of wheat crops. The correlation analysis helps determine the strength and direction of the relationship between the variables based on the results. The statistical analysis identifies the variables that have a significant impact on crop yield growth. The work developed and tested two different models (the Artificial Neural Network (ANN) model and the Adaptive Neuro-fuzzy Interference System (ANFIS) to predict crop yield growth based on the selected independent variables. The ANFIS model was particularly interesting as it can predict a mapping between the input and output parameters, which can be useful for understanding the relationships between different variables. ANFIS was considered a better predictor than ANN as the error percentage ranged from 0-3%. Overall, the work highlighted the importance of crop yield predictions and the potential benefits that simulations can generate for farmers and the agriculture sector in general.
{"title":"ARTIFICIAL NEURAL NETWORKS AND ADAPTIVE NEURO FUZZY INFERENCE SYSTEM FOR WHEAT YIELD ANALYSIS AND PREDICTION","authors":"Shailesh Rao Agari, Manoj Vishal, Anjana Krishnan","doi":"10.32404/rean.v10i3.7553","DOIUrl":"https://doi.org/10.32404/rean.v10i3.7553","url":null,"abstract":"The current study evaluated the prediction of the yield of wheat crops in the Bagalkot district of Karnataka State, India. The study aimed to provide crop yield predictions to help farmers optimize their cultivation and marketing strategies. The model used various independent variables, such as temperature, humidity of air, and water resources, to predict growth in the yield of wheat crops. The correlation analysis helps determine the strength and direction of the relationship between the variables based on the results. The statistical analysis identifies the variables that have a significant impact on crop yield growth. The work developed and tested two different models (the Artificial Neural Network (ANN) model and the Adaptive Neuro-fuzzy Interference System (ANFIS) to predict crop yield growth based on the selected independent variables. The ANFIS model was particularly interesting as it can predict a mapping between the input and output parameters, which can be useful for understanding the relationships between different variables. ANFIS was considered a better predictor than ANN as the error percentage ranged from 0-3%. Overall, the work highlighted the importance of crop yield predictions and the potential benefits that simulations can generate for farmers and the agriculture sector in general.","PeriodicalId":55957,"journal":{"name":"Revista de Agricultura Neotropical","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134909789","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}
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