Pub Date : 2022-10-19DOI: 10.5965/223811712132022238
Faver Alvarez Carrillo, Armando Sterling, Paula Andrea Rios Parra
The humid tropics harbor great biological diversity, in addition to native species with forage potential as alternatives for animal feed. However, using trees and shrubs and having plantations are limited by the absence of information on their growth and seed germination. Therefore, the goal was to evaluate the germination capacity of native plant species with forage potential in tropical rainforest conditions, selecting eight species with important nutritional value: Bauhinia tarapotensis, Crescentia cujete, Zygia longifolia, Cecropia ficifolia, Piptocoma discolor, Piper bredemeyeri, Calathea lutea and Heliconia rostrata. Two treatments were evaluated: T1: Seeds (sexual and asexual) immersed for 12 hours in water, and T2: Seeds (sexual and asexual) without any pre-germination treatment (control). Significant differences were found in the germination percentage among species, treatments and the interaction of the two factors (p < 0.01). The species C. cujete, C. ficifolia and P. discolor presented better germination percentages with T1, in contrast to P. bredemeyeri, which adapted better to T2. In the same sense, H. rostrata (93%), C. cujete (91%) and Z. longifolia (89%) with T1, were the species with the highest germination capacity when compared to the other species, being desirable for use as fodder in agricultural production systems, due to their high germination power. In general, the pre-germinative treatment with water was very effective in increasing the permeability of the seed coat and, therefore, favored the breaking of endogenous physiological dormancy.
{"title":"Germinative capacity of native plant species with forage potential under tropical rainforest conditions at the mountain-foot","authors":"Faver Alvarez Carrillo, Armando Sterling, Paula Andrea Rios Parra","doi":"10.5965/223811712132022238","DOIUrl":"https://doi.org/10.5965/223811712132022238","url":null,"abstract":"The humid tropics harbor great biological diversity, in addition to native species with forage potential as alternatives for animal feed. However, using trees and shrubs and having plantations are limited by the absence of information on their growth and seed germination. Therefore, the goal was to evaluate the germination capacity of native plant species with forage potential in tropical rainforest conditions, selecting eight species with important nutritional value: Bauhinia tarapotensis, Crescentia cujete, Zygia longifolia, Cecropia ficifolia, Piptocoma discolor, Piper bredemeyeri, Calathea lutea and Heliconia rostrata. Two treatments were evaluated: T1: Seeds (sexual and asexual) immersed for 12 hours in water, and T2: Seeds (sexual and asexual) without any pre-germination treatment (control). Significant differences were found in the germination percentage among species, treatments and the interaction of the two factors (p < 0.01). The species C. cujete, C. ficifolia and P. discolor presented better germination percentages with T1, in contrast to P. bredemeyeri, which adapted better to T2. In the same sense, H. rostrata (93%), C. cujete (91%) and Z. longifolia (89%) with T1, were the species with the highest germination capacity when compared to the other species, being desirable for use as fodder in agricultural production systems, due to their high germination power. In general, the pre-germinative treatment with water was very effective in increasing the permeability of the seed coat and, therefore, favored the breaking of endogenous physiological dormancy.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48858972","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 : 2022-10-19DOI: 10.5965/223811712132022308
A. Holtz, Priscila Stinguel, J. Ataide, Ronilda Lana Aguiar, A. Piffer, Ariana Magnago
Although chemical insecticides are successfully used in agriculture, several problems may be related to their indiscriminate use. This has encouraged the development of alternative methods for pest insect control and societal pressure for pesticide-free products. The jatropha (J. curcas) and castor bean (Ricinus communis) are plants that have shown insecticidal potential. Thus, the objective of this work was to study the effects of leaves of R. communis and J. curcas of different ages on the cabbage aphid (Myzus persicae). Five solution concentrations and five leaf types were used. Each treatment consisted of ten individuals M. persicae, kept in Petri dishes (10.0 x 1.2 cm), about kale leaf discs. Each Petri dish was considered a repeat, totaling ten. An airbrush connected to a compressor calibrated at constant pressure and 5 mL of solution per repetition was used for direct application. The cabbage discs were immersed in the different treatments for five seconds and offered to aphids in the indirect application. For both tests, evaluations were performed 72 hours after application. Data were submitted to linear regression analysis and means test. There was an interaction between the application type, leaf type, and concentrations for both plants. We argue that at their different ages, jatropha and castor bean leaves have insecticidal potential in the management of M. persicae.
尽管化学杀虫剂在农业中得到了成功的使用，但有几个问题可能与它们的滥用有关。这鼓励了害虫防治替代方法的发展，也鼓励了无农药产品的社会压力。麻疯树（J.curcas）和蓖麻（Ricinus commons）是显示出杀虫潜力的植物。因此，本研究的目的是研究不同年龄的共产主义者和curcas叶片对甘蓝蚜（Myzus persicae）的影响。使用了五种溶液浓度和五种叶片类型。每种处理由10个个体的M.persicae组成，保存在培养皿（10.0 x 1.2厘米）中，约为羽衣甘蓝叶盘。每个培养皿被认为是一个重复，总共十个。将连接到在恒定压力和每次重复5mL溶液下校准的压缩机的喷枪用于直接应用。将卷心菜圆盘浸入不同的处理中5秒钟，并在间接施用中提供给蚜虫。对于这两种测试，在施用后72小时进行评估。将数据提交给线性回归分析和均值检验。两种植物的施用类型、叶片类型和浓度之间存在相互作用。我们认为，在不同的年龄，麻疯树和蓖麻叶在管理桃蚜方面具有杀虫潜力。
{"title":"Management of Myzus persicae with leaves of Jatropha curcas and Ricinus communis in different vegetative stages","authors":"A. Holtz, Priscila Stinguel, J. Ataide, Ronilda Lana Aguiar, A. Piffer, Ariana Magnago","doi":"10.5965/223811712132022308","DOIUrl":"https://doi.org/10.5965/223811712132022308","url":null,"abstract":"Although chemical insecticides are successfully used in agriculture, several problems may be related to their indiscriminate use. This has encouraged the development of alternative methods for pest insect control and societal pressure for pesticide-free products. The jatropha (J. curcas) and castor bean (Ricinus communis) are plants that have shown insecticidal potential. Thus, the objective of this work was to study the effects of leaves of R. communis and J. curcas of different ages on the cabbage aphid (Myzus persicae). Five solution concentrations and five leaf types were used. Each treatment consisted of ten individuals M. persicae, kept in Petri dishes (10.0 x 1.2 cm), about kale leaf discs. Each Petri dish was considered a repeat, totaling ten. An airbrush connected to a compressor calibrated at constant pressure and 5 mL of solution per repetition was used for direct application. The cabbage discs were immersed in the different treatments for five seconds and offered to aphids in the indirect application. For both tests, evaluations were performed 72 hours after application. Data were submitted to linear regression analysis and means test. There was an interaction between the application type, leaf type, and concentrations for both plants. We argue that at their different ages, jatropha and castor bean leaves have insecticidal potential in the management of M. persicae.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49340184","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 : 2022-10-19DOI: 10.5965/223811712132022324
D. Fedchyshyn, I. Ignatenko, Daria Danilik, Alyona Chyryk
This review article examines the legal support and proper state support of organic production in Ukraine, substantiation of the potential and obstacles to the development of organic production, as well as proposals for improving the current legislation. This review also analyzes the modern market of organic products, which, in terms of growing consumer demand for environmentally friendly and safe for human health, is very perspective for Ukraine. The increase in the area of agricultural land allocated for organic production, the number of domestic organic operators, and the ever-increasing volume of exports of organic products to other countries indicate a steady trend of growth and further development of this market. However, it is noted that the need to form the infrastructure of the organic products market still remains important. In addition, the problem of improving the system of standardization and certification of production, processing, storage and transportation of organic products, as well as the introduction of an effective control system over the sale of organic raw materials, are the main challenges to be solved.
{"title":"Development of the organic production in Ukraine: problems and perspectives","authors":"D. Fedchyshyn, I. Ignatenko, Daria Danilik, Alyona Chyryk","doi":"10.5965/223811712132022324","DOIUrl":"https://doi.org/10.5965/223811712132022324","url":null,"abstract":"This review article examines the legal support and proper state support of organic production in Ukraine, substantiation of the potential and obstacles to the development of organic production, as well as proposals for improving the current legislation. This review also analyzes the modern market of organic products, which, in terms of growing consumer demand for environmentally friendly and safe for human health, is very perspective for Ukraine. The increase in the area of agricultural land allocated for organic production, the number of domestic organic operators, and the ever-increasing volume of exports of organic products to other countries indicate a steady trend of growth and further development of this market. However, it is noted that the need to form the infrastructure of the organic products market still remains important. In addition, the problem of improving the system of standardization and certification of production, processing, storage and transportation of organic products, as well as the introduction of an effective control system over the sale of organic raw materials, are the main challenges to be solved.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71106656","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 : 2022-10-19DOI: 10.5965/223811712132022298
Mateus Alves de Sousa, I. M. S. Reis
Alta acidez do solo, baixa capacidade de troca catiônica e baixa fertilidade são os principais gargalos das atividades agrícolas na região amazônica, o que torna a calagem uma técnica essencial para a produção agrícola. Este estudo teve como objetivo avaliar a eficiência de dois métodos de calagem, a saber, a lanço e incorporado ao solo, para atender às exigências da saturação por bases (V%) em diferentes profundidades e intervalos de tempo em um Latossolo Amarelo na Amazônia oriental. O experimento foi realizado em delineamento de blocos casualizados em esquema fatorial 5 × 2, com cinco doses de calcário recomendadas para elevar o V a 0, 40, 80, 160 e 320% e dois métodos de aplicação (a lanço e incorporado). Após a aplicação do calcário, amostras de solo foram coletadas em três profundidades (0,00-0,05, 0,05-0,10 e 0,10-0,20 m) em três períodos (30, 60 e 90 dias após a aplicação, DAA) para determinação do V%. Os maiores valores de V% foram observados aos 30 DAA com incorporação. O valor de V% esperado foi obtido pela incorporação da dose de 40%, mas foi limitado às camadas de 0,00-0,05 e 0,05-0,10 m. A incorporação de cálcario é o método mais eficiente para atingir os níveis recomendados de V% aos 30 DAA. Aos 90 DAA, a maioria das doses não forneceu valores de V% iguais ou superiores aos valores calculados. Portanto, análises de regressão são recomendadas em experimentos de campo respeitando o limite de 80% V.
{"title":"Eficiência do método de saturação por bases para recomendação de calagem em um Latossolo Amarelo na Amazônia Oriental","authors":"Mateus Alves de Sousa, I. M. S. Reis","doi":"10.5965/223811712132022298","DOIUrl":"https://doi.org/10.5965/223811712132022298","url":null,"abstract":"Alta acidez do solo, baixa capacidade de troca catiônica e baixa fertilidade são os principais gargalos das atividades agrícolas na região amazônica, o que torna a calagem uma técnica essencial para a produção agrícola. Este estudo teve como objetivo avaliar a eficiência de dois métodos de calagem, a saber, a lanço e incorporado ao solo, para atender às exigências da saturação por bases (V%) em diferentes profundidades e intervalos de tempo em um Latossolo Amarelo na Amazônia oriental. O experimento foi realizado em delineamento de blocos casualizados em esquema fatorial 5 × 2, com cinco doses de calcário recomendadas para elevar o V a 0, 40, 80, 160 e 320% e dois métodos de aplicação (a lanço e incorporado). Após a aplicação do calcário, amostras de solo foram coletadas em três profundidades (0,00-0,05, 0,05-0,10 e 0,10-0,20 m) em três períodos (30, 60 e 90 dias após a aplicação, DAA) para determinação do V%. Os maiores valores de V% foram observados aos 30 DAA com incorporação. O valor de V% esperado foi obtido pela incorporação da dose de 40%, mas foi limitado às camadas de 0,00-0,05 e 0,05-0,10 m. A incorporação de cálcario é o método mais eficiente para atingir os níveis recomendados de V% aos 30 DAA. Aos 90 DAA, a maioria das doses não forneceu valores de V% iguais ou superiores aos valores calculados. Portanto, análises de regressão são recomendadas em experimentos de campo respeitando o limite de 80% V.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48519352","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 : 2022-10-19DOI: 10.5965/223811712132022229
Mariuccia Schlichting de Martin, T. A. Macedo, C. A. Steffens, Cristina Soethe, Angélica Schmitz Heinzen, L. Rufato
This study analyzed the effect of rootstocks G.213, M.9 and Marubakaido with M.9 interstem of 30 and 20 cm (MB/M.9-30cm and MB/M.9-20cm) on postharvest quality, mineral composition and functional properties of 'Maxi Gala' apples. The evaluations was performed using fruits from a commercial orchard located in Vacaria, RS, Brazil. Fruits were stored for 135 and 147 days in the 2014/2015 and 2015/2016 seasons, respectively, and analyzed one day after harvest and after cold storage (1.0±0.2 °C) followed by seven days in ambient condition. The mineral composition of fruits showed small and inconsistent differences between rootstocks. The MB/M.9-20cm provided higher total antioxidant activity and levels of total phenolic compounds in fruit peel than MB/M.9-30cm. For 2014/2015 season, soluble solids content at harvest was higher in fruits from trees with G.213 rootstock, not differing only from MB/M.9-30cm. In 2015/2016 season, G.213 and M.9 provided higher soluble solids content after storage compared to MB/M.9-30 cm and MB/M.9-20cm. G.213 rootstock anticipated fruit maturity compared to M.9 in 2014/2015 season. Other quality attributes of ‘Maxi Gala’ apples, at harvest and after cold storage, were similar between rootstocks G.213, M.9 and Maruba with M.9 interstem of 30 and 20cm.
{"title":"Postharvest quality of apples from ‘Maxi Gala’ trees grafted on different rootstocks","authors":"Mariuccia Schlichting de Martin, T. A. Macedo, C. A. Steffens, Cristina Soethe, Angélica Schmitz Heinzen, L. Rufato","doi":"10.5965/223811712132022229","DOIUrl":"https://doi.org/10.5965/223811712132022229","url":null,"abstract":"This study analyzed the effect of rootstocks G.213, M.9 and Marubakaido with M.9 interstem of 30 and 20 cm (MB/M.9-30cm and MB/M.9-20cm) on postharvest quality, mineral composition and functional properties of 'Maxi Gala' apples. The evaluations was performed using fruits from a commercial orchard located in Vacaria, RS, Brazil. Fruits were stored for 135 and 147 days in the 2014/2015 and 2015/2016 seasons, respectively, and analyzed one day after harvest and after cold storage (1.0±0.2 °C) followed by seven days in ambient condition. The mineral composition of fruits showed small and inconsistent differences between rootstocks. The MB/M.9-20cm provided higher total antioxidant activity and levels of total phenolic compounds in fruit peel than MB/M.9-30cm. For 2014/2015 season, soluble solids content at harvest was higher in fruits from trees with G.213 rootstock, not differing only from MB/M.9-30cm. In 2015/2016 season, G.213 and M.9 provided higher soluble solids content after storage compared to MB/M.9-30 cm and MB/M.9-20cm. G.213 rootstock anticipated fruit maturity compared to M.9 in 2014/2015 season. Other quality attributes of ‘Maxi Gala’ apples, at harvest and after cold storage, were similar between rootstocks G.213, M.9 and Maruba with M.9 interstem of 30 and 20cm.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44231995","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 : 2022-10-19DOI: 10.5965/223811712132022344
Higor Jonathan de Oliveira Silva, Maria Ingrid de Souza, Eduardo Pradi Vendruscolo, A. Rochetti, Gabriela Rodrigues Sant’Ana
The present study aimed to evaluate the effect of applying different concentrations of niacin, at different times in relation to nitrogen fertilization, on the characteristics of Urochloa brizantha. The treatments consisted of applying three concentrations of niacin (0, 100, and 200 mg L-1) and three different moments (two days before, together, and two days after nitrogen fertilization). It was found that there was variation in response, mainly concerning the moment of application of the vitamins, in which the joint and subsequent application of fertilization generally exceeded the application performed previously, and of both concentrations used (100 and 200 mg L-1), in relation to the control without vitamin application. In this way, the application of niacin at a concentration of 100 mg L-1, carried out jointly or after nitrogen fertilization, provides better conditions for developing and producing dry matter of Urochloa brizantha due to the presence of nitrogen.
{"title":"Concentration and moment of niacin application on Urochloa brizantha in relation to nitrogen fertilization","authors":"Higor Jonathan de Oliveira Silva, Maria Ingrid de Souza, Eduardo Pradi Vendruscolo, A. Rochetti, Gabriela Rodrigues Sant’Ana","doi":"10.5965/223811712132022344","DOIUrl":"https://doi.org/10.5965/223811712132022344","url":null,"abstract":"The present study aimed to evaluate the effect of applying different concentrations of niacin, at different times in relation to nitrogen fertilization, on the characteristics of Urochloa brizantha. The treatments consisted of applying three concentrations of niacin (0, 100, and 200 mg L-1) and three different moments (two days before, together, and two days after nitrogen fertilization). It was found that there was variation in response, mainly concerning the moment of application of the vitamins, in which the joint and subsequent application of fertilization generally exceeded the application performed previously, and of both concentrations used (100 and 200 mg L-1), in relation to the control without vitamin application. In this way, the application of niacin at a concentration of 100 mg L-1, carried out jointly or after nitrogen fertilization, provides better conditions for developing and producing dry matter of Urochloa brizantha due to the presence of nitrogen.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43819277","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 : 2022-10-19DOI: 10.5965/223811712132022206
Y. Yuliani
This study investigates the biopesticidal effects of Elephantopus scaber Linn. extract on mortality of Spodoptera litura, Plutella xylostella, and non-target organisms and investigate the impact on S. litura protein levels and soil microbial community structure. The experiment was performed using a completely randomized design. Methanol extracts from E. scaber leaves, at concentrations of 2%, 4%, 6%, 8%, 10%, and 12%, were tested for bioactivity against the 2nd-instar larva of S. litura, P. xylostella, and earthworms. Mortality rates of the larvae and worms were observed. The collected data were analyzed using analysis of variance (ANOVA), followed by probit and descriptive analysis. The results showed that methanol extracts of E. scaber (12%) influenced the highest mortality rates for both S. litura (93.35%) and P. xylostella (96.65%) with LC50 and LC80 of S. litura was 1.867 and 4.763; for P. xylostella were 4.488 and 7.92, respectively. However, the application of E. scaber biopesticide also influences earthworms’ mortality rate. The 6% E. scaber extract resulted in 60% death of earthworms during a 20-days period. In addition, higher concentrations of E. scaber extracts resulted in lower molecular weights and levels of S. litura proteins. The diversity and density of the soil microbial community also decreased by 6% concentration.
{"title":"Bioactivity effect of Elephantopus scaber Linn. extracts against Spodoptera litura and the soil microbial community","authors":"Y. Yuliani","doi":"10.5965/223811712132022206","DOIUrl":"https://doi.org/10.5965/223811712132022206","url":null,"abstract":"This study investigates the biopesticidal effects of Elephantopus scaber Linn. extract on mortality of Spodoptera litura, Plutella xylostella, and non-target organisms and investigate the impact on S. litura protein levels and soil microbial community structure. The experiment was performed using a completely randomized design. Methanol extracts from E. scaber leaves, at concentrations of 2%, 4%, 6%, 8%, 10%, and 12%, were tested for bioactivity against the 2nd-instar larva of S. litura, P. xylostella, and earthworms. Mortality rates of the larvae and worms were observed. The collected data were analyzed using analysis of variance (ANOVA), followed by probit and descriptive analysis. The results showed that methanol extracts of E. scaber (12%) influenced the highest mortality rates for both S. litura (93.35%) and P. xylostella (96.65%) with LC50 and LC80 of S. litura was 1.867 and 4.763; for P. xylostella were 4.488 and 7.92, respectively. However, the application of E. scaber biopesticide also influences earthworms’ mortality rate. The 6% E. scaber extract resulted in 60% death of earthworms during a 20-days period. In addition, higher concentrations of E. scaber extracts resulted in lower molecular weights and levels of S. litura proteins. The diversity and density of the soil microbial community also decreased by 6% concentration.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47274744","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 : 2022-10-19DOI: 10.5965/223811712132022247
A. C. D. C. L. Fioreze, Cirio Parizotto, N. Orsi, Ana Caroline Basniak Konkol
The genetic variability in plant populations can be estimated through multivariate analysis, which allows to analyze the genotypes based on a set of traits to identify the traits with the greatest influence for the divergence and the correlation between them. In this sense, the objective of the present work was to estimate the genetic divergence between golden flax lines using multivariate analysis for initial plant selections. For this purpose, 73 lines, in addition to the control, were tested in a randomized complete block design, with three replications, and traits of cycle, stature, and yield were measured. Twelve groups were obtained based on the Mahalanobis distance estimate and Tocher cluster, and the technical length was the most important trait for the dissimilarity. The line of group XI was promising, with early maturation and satisfactory seed productivity. The graphic of dispersion of the canonical variables showed the most divergent lines, and the greatest divergence was observed between groups III and IV. Multivariate analysis was an important tool for the initial choice of superior golden flax.
{"title":"Multivariate analysis as a tool in the initial selections of golden flax (Linum usitatissimum L.)","authors":"A. C. D. C. L. Fioreze, Cirio Parizotto, N. Orsi, Ana Caroline Basniak Konkol","doi":"10.5965/223811712132022247","DOIUrl":"https://doi.org/10.5965/223811712132022247","url":null,"abstract":"The genetic variability in plant populations can be estimated through multivariate analysis, which allows to analyze the genotypes based on a set of traits to identify the traits with the greatest influence for the divergence and the correlation between them. In this sense, the objective of the present work was to estimate the genetic divergence between golden flax lines using multivariate analysis for initial plant selections. For this purpose, 73 lines, in addition to the control, were tested in a randomized complete block design, with three replications, and traits of cycle, stature, and yield were measured. Twelve groups were obtained based on the Mahalanobis distance estimate and Tocher cluster, and the technical length was the most important trait for the dissimilarity. The line of group XI was promising, with early maturation and satisfactory seed productivity. The graphic of dispersion of the canonical variables showed the most divergent lines, and the greatest divergence was observed between groups III and IV. Multivariate analysis was an important tool for the initial choice of superior golden flax.","PeriodicalId":37575,"journal":{"name":"Revista de Ciencias Agroveterinarias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42558851","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 : 2022-10-19DOI: 10.5965/223811712132022315
L. Vianna
A Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri) é uma das principais referências em pesquisa agropecuária no estado. O objetivo desse trabalho foi fazer uma análise bibliométrica das publicações científicas geradas pela Epagri, cujos metadados estão cadastradas no Sistema Epagri de Produção Técnico-Científica (Seprotec). Foram utilizados os seguintes metadados: ano de publicação, título, palavras-chave e tipo de publicação. Os metadados foram analisados no pacote estatístico R, utilizando a biblioteca UDPIPE. De 1972 até outubro de 2021 havia 15.841 publicações no Seprotec, das quais 67% são publicações científicas. Durante as décadas de 1970 e 1980 a pesquisa focou nos aspectos agronômicos, buscando o aumento de produtividade das culturas. A partir da década de 1990 a componente ambiental ganhou relevância, abordando aspectos de conservação de solos e da água. Hoje a pesquisa agropecuária em Santa Catarina está diante de um novo desafio, que é tornar a atividade agropecuária do estado viável econômica, social e ambientalmente. Dentre as novas frentes de pesquisa destacam-se a agroecologia e a agricultura regenerativa.
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Pub Date : 2022-10-19DOI: 10.5965/223811712132022354
C. A. D. P. Sampaio, Rodrigo Figueiredo Terezo, Gilberto Massashi Ide, Carolina Antoniazzi Spanholi, Felipe Martins Matos, Tiago Burgardt
Água da chuva pode ser captada de diferentes telhados de construções rurais e esta pode ser armazenada para múltiplos propósitos dependendo de sua qualidade. Esta nota técnica relata a avaliação da água da chuva coletada diretamente da atmosfera e após passar por quatro tipos de telhados que são: de cerâmica francesa (telhado1/prédio da escola de Agronomia), de fibrocimento (telhado2/galpão de máquinas agrícolas), de cerâmica francesa (telhado3/instalação para ovinos) e de cerâmica francesa (telhado4/instalação para suínos), localizados no Centro de Ciências Agroveterinárias, Lages/SC. Os parâmetros analisados foram pH, cor, turbidez, oxigênio dissolvido, coliformes totais e termotolerantes. Os resultados mostraram que o pH da água da chuva “in natura” foi variável e abaixo de 7,0 com pH (médio) de 6,02, que após passar pelos telhados houve aumento do pH (médio) para 6,34 (telhado1), 6,90 (telhado2), 7,14 (telhado3) e 6,50 (telhado4) e com variações também nos parâmetros turbidez, oxigênio dissolvido e de coliformes. Desta forma, a água de chuva apresenta potencial em ser utilizada para fins não potáveis, sendo então aconselhado seu uso sem tratamento para limpeza dos ambientes próximos destas construções rurais, bem como a irrigação de árvores e plantas ornamentais, entre outros.
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