Pesquisa Agropecuaria Gaucha最新文献_第2页

Milk quality and characterization of different geographic regions of Brazil: a literature review 巴西不同地理区域的牛奶质量和特征:文献综述

Pesquisa Agropecuaria Gaucha Pub Date : 2022-10-14 DOI: 10.36812/pag.2022281193-205

Sueli Fiorini Sommer, M. Richter

引用次数: 0

Colonização por micorrizas arbusculares em tangerineiras ‘Montenegrina’: interação entre porta-enxertos e sazonalidade 丛枝菌根在黑山柑桔中的定殖:砧木与季节性的相互作用

Pesquisa Agropecuaria Gaucha Pub Date : 2022-09-08 DOI: 10.36812/pag.2022281174-192

Priscila de Sousa Rollo Pereira, P. V. D. Souza, S. L. Stürmer, Vinicius Ribeiro Jardim, L. Z. Guasso, M. Gonzatto, S. F. Schwarz

{"title":"Colonização por micorrizas arbusculares em tangerineiras ‘Montenegrina’: interação entre porta-enxertos e sazonalidade","authors":"Priscila de Sousa Rollo Pereira, P. V. D. Souza, S. L. Stürmer, Vinicius Ribeiro Jardim, L. Z. Guasso, M. Gonzatto, S. F. Schwarz","doi":"10.36812/pag.2022281174-192","DOIUrl":"https://doi.org/10.36812/pag.2022281174-192","url":null,"abstract":"O objetivo foi avaliar a influência da sazonalidade na colonização micorrízica nas raízes de seis porta-enxertos em pomar de tangerineiras ‘Montenegrina’ (Citrus deliciosa Tenore). Os porta-enxertos avaliados foram: ‘Flying Dragon’ [Poncirus trifoliata var. monstrosa (T. Ito) Swing.]; citrangeiro ‘Troyer’ [C. sinensis (L.) Osb. × P. trifoliata (L.) Raf.]; citrumeleiro ‘Swingle’ [C. paradisi Macf. × P. trifoliata]; limoeiro ‘Cravo’ (C. limonia Osb.); limoeiro ‘Volkameriano’ (C. volkameriana Ten. & Pasq.); laranjeira ‘Caipira’ (C. sinensis). Realizou-se a coleta de radicelas em quatro estações. Determinou-se a densidade de estruturas, colonização radicular (número de segmentos infectados/total analisado) e densidade de esporos. Os porta-enxertos apresentaram porcentagens elevadas de colonização na primavera (acima de 96,60%). No inverno, apenas ‘Swingle’ e ‘Cravo’ apresentaram altas taxas de colonização (96,60 e 95,00 %, respectivamente). Já, ‘Flying Dragon’, ‘Troyer’ e ‘Volkameriano’ apresentaram baixa colonização nessa estação (11,60 a 33,30 %). ‘Flying Dragon’ apresentou uma redução gradativa de colonização com o decorrer da época estudada: na primavera (100,00 %), verão (95,00 %), outono (63,30 %) e inverno (33,30 %). A colonização micorrízica ocorre naturalmente e de forma elevada nos porta-enxertos, variando entre os porta-enxertos e as épocas do ano. Há uma correlação negativa entre conteúdo nutricional foliar e presença de FMAs.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69752740","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}

引用次数: 0

Effect of irrigation, planting position, and application of calcium silicate on garlic development in ‘Serra Gaúcha’ region, South Brazil 巴西南部塞拉Gaúcha地区灌溉、种植位置和硅酸钙施用对大蒜生长发育的影响

Pesquisa Agropecuaria Gaucha Pub Date : 2022-06-30 DOI: 10.36812/pag.2022281139-155

Rafaela Meneguzzo, W. Silvestre, Gabriel Fernandes Pauletti

{"title":"Effect of irrigation, planting position, and application of calcium silicate on garlic development in ‘Serra Gaúcha’ region, South Brazil","authors":"Rafaela Meneguzzo, W. Silvestre, Gabriel Fernandes Pauletti","doi":"10.36812/pag.2022281139-155","DOIUrl":"https://doi.org/10.36812/pag.2022281139-155","url":null,"abstract":"Garlic crop is widely distributed in the Serra Gaúcha region, South Brazil. However, there is little information relative to irrigation in garlic, and on the influence of bulbil planting position in the development of the crop. Silicon is being used in garlic as an auxiliary fertilizer, but it is necessary to study further its effects in the crop. This study aimed to verify the effect of different irrigation regimes based on the evapotranspiration and empirically, evaluate the development of the plants that germinated under different planting positions, and observe the physiology of the plants according to the different doses of calcium silicate applied to the soil. Experiments were carried out in the municipality of São Marcos, using a design of randomized blocks, with four repetitions in each treatment. Plant height, stalk height and diameter, germination percentage of the bulbils, and average bulb mass were evaluated. The observed results indicated that irrigation induced higher plant heights when it was carried out based on evapotranspiration; planting with the bulbils face up have had the smaller germination time and the highest average bulb mass; the application of silicon at the highest dose (800 kg·ha-1) increased the average bulb mass by approximately 18 %.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47029865","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}

引用次数: 0

Seasonal dynamics of magnesium in rangeland areas of Southeastern region of Rio Grande do Sul State/Brazil: 1. field research 巴西巴西南大德州东南部牧区镁元素的季节动态实地研究

Pesquisa Agropecuaria Gaucha Pub Date : 2022-06-17 DOI: 10.36812/pag.2022281111-124

A. C. Fluck, Michelle de Almeida Ollé, H. Alfaya, J. Reis, João P. da Silva

{"title":"Seasonal dynamics of magnesium in rangeland areas of Southeastern region of Rio Grande do Sul State/Brazil: 1. field research","authors":"A. C. Fluck, Michelle de Almeida Ollé, H. Alfaya, J. Reis, João P. da Silva","doi":"10.36812/pag.2022281111-124","DOIUrl":"https://doi.org/10.36812/pag.2022281111-124","url":null,"abstract":"We aimed to evaluate the seasonal dynamics of magnesium (Mg) in the system soil - plant - animal. It was conducted in two natural rangeland areas on two types of undisturbed soils (medium-clayey texture) in the Serra do Sudeste region (Rio Grande do Sul State, Brazil). In each area, 12 heifers were kept under continuous extensive grazing for twelve months without mineral supplementation. Samples of soil and vegetation were collected monthly from 16 fixed points and blood serum from each of the animals in each area monthly for the determination of Mg levels. The data were analyzed by analysis of variance, decomposition of the annual variation of the response variables and regression (harmonic analysis) for adjustment of function to express this variation. The Mg content in the soils of the two areas was high (1.86 ± 0.045 cmolc.dm-3). Mg levels in the vegetation (0.23 ± 0.0025 % DM) are sufficient to meet the needs of all categories of ruminants. The Mg contents in the blood serum (3.05 ± 0.0025) of grazing animals are considered medium to high and in normal levels. Mg supplementation is suggested in the cold season months for the most demanding animal categories (gestating and lactating females).","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42952878","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}

引用次数: 0

Dynamics of magnesium in rangeland areas of Southeastern region of the State Rio Grande do Sul/Brazil. 2. Correlations 巴西南巴西大州东南部牧场地区镁元素动态。2. 相关性

Pesquisa Agropecuaria Gaucha Pub Date : 2022-06-17 DOI: 10.36812/pag.2022281125-138

A. C. Fluck, H. Alfaya, Michelle de Almeida Ollé, João P. da Silva, J. Reis

{"title":"Dynamics of magnesium in rangeland areas of Southeastern region of the State Rio Grande do Sul/Brazil. 2. Correlations","authors":"A. C. Fluck, H. Alfaya, Michelle de Almeida Ollé, João P. da Silva, J. Reis","doi":"10.36812/pag.2022281125-138","DOIUrl":"https://doi.org/10.36812/pag.2022281125-138","url":null,"abstract":"We aimed to evaluate the dynamics of magnesium (Mg) in the soil - plant – animal chain. It was conducted in two natural rangeland areas on two types of undisturbed (virgin) soils (medium/clayey texture) in the Serra do Sudeste (Rio Grande do Sul State, Brazil). In each of these areas, 12 animals (heifers) were kept under continuous extensive grazing for twelve months without mineral supplementation. Every month, samples of soil and vegetation were collected at 16 fixed points (radius: 25 m) as well as blood serum from each of the animals in each area for the determination of Mg and other minerals levels. The data were analyzed using the analysis of variance, decomposition of the annual variation of the response variables and periodic regression (harmonic analysis) for adjustment of function to express this variation. The relationship of Mg with other variables within the links of the soil-plant-animal chain is influenced by some factors such as physicochemical and biological soil reactions, floristic composition and environmental conditions. In natural non perturbed rangeland areas the organic matter is the main colloid of the soil for the availability of magnesium to plants and, consequently, to the animals.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44858872","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}

引用次数: 0

Forage yield of tetraploid bahiagrass hybrids 四倍体巴哈马草杂交种的牧草产量

Pesquisa Agropecuaria Gaucha Pub Date : 2022-05-17 DOI: 10.36812/pag.202228194-110

Ilson Ghellar Junior, Júlio Antoniolli, K. Krycki, Mariana Lima, R. Weiler, A. Brunes, C. Simioni, M. Dall’Agnol

{"title":"Forage yield of tetraploid bahiagrass hybrids","authors":"Ilson Ghellar Junior, Júlio Antoniolli, K. Krycki, Mariana Lima, R. Weiler, A. Brunes, C. Simioni, M. Dall’Agnol","doi":"10.36812/pag.202228194-110","DOIUrl":"https://doi.org/10.36812/pag.202228194-110","url":null,"abstract":"In Southern Brazil, much of the livestock activity is developed in native grasslands. Studies about forage traits, frost tolerance and nutritional value of native forage species there has been increasing with better results of productive efficiency (animal gain). The objective of this work was to evaluate forage yield of forty-five intraspecific hybrids of segregating progenies of bahiagrass (Paspalum notatum Flügge) from agronomic analyses under greenhouse conditions and determine the reproduction mode of selected hybrids. The hybrids had great variability in all agronomic characteristics measured. The plants with the highest total dry mass production were 17PN10P3 and 17PN29P1 (sexual reproduction), 17PN10P5, 17PN16P3 and 17PN28P4 (apomictic reproduction). The high correlation of the total dry mass with tillers number and with the root dry mass demonstrate that the hybrids can be used as forage and also to reduce the effects of soil erosion in degraded areas. The evaluations of agronomic characteristics and the determination of the mode of reproduction of the selected hybrids allowed the identification of promising genetic materials for forage yield and to soil cover, selecting them for additional stages in the breeding program.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49447785","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}

引用次数: 0

Nutritional implications of exogenous proteases in fish feeding 外源蛋白酶在鱼类饲养中的营养意义

Pesquisa Agropecuaria Gaucha Pub Date : 2022-05-05 DOI: 10.36812/pag.202228170-93

Thamara Luísa Staudt Schneider, R. Lazzari

引用次数: 1

Bioprospecting of strawberry guava leaf essential oil in Caxias do Sul region, South Brazil 巴西南部南卡西亚斯地区草莓番石榴叶精油的生物勘探

Pesquisa Agropecuaria Gaucha Pub Date : 2022-05-02 DOI: 10.36812/pag.202228158-69

W. Silvestre, Luanna Mazzotti, Gabriel Fernandes Pauletti

{"title":"Bioprospecting of strawberry guava leaf essential oil in Caxias do Sul region, South Brazil","authors":"W. Silvestre, Luanna Mazzotti, Gabriel Fernandes Pauletti","doi":"10.36812/pag.202228158-69","DOIUrl":"https://doi.org/10.36812/pag.202228158-69","url":null,"abstract":"The strawberry guava (Psidium cattleianum Sabine) is a fruit species native from South-Southeast Brazil whose leaf essential oil has potential for commercial uses due to its bioactive properties. However, little is known about the influence of the geographical distribution in small scale on P. cattleianum essential oil chemical composition and yield. The present work aimed to evaluate the yield and chemical composition of the leaf essential oil of P. cattleianum populations in the region of Caxias do Sul, South Brazil. Samples of twelve populations were collected and the essential oil was extracted by hydrodistillation. The chemical composition of the essential oils was determined by GC/MS and GC-FID. The results showed a high variability of essential oil yield, which ranged between 0.08 and 0.75% v/w. Regarding the chemical profiles, nine populations presented the 1,8-cineole chemotype, the β-caryophyllene chemotype was observed in two of them, and in one population there were four major compounds. Both hierarchical cluster and principal component analyses showed differences in essential oil composition in populations geographically close, indicating the existence of an important genetic variability in populations of the same geographical area.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48603188","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}

引用次数: 1

Agronomic evaluation of ‘Riesling Itálico’, ‘Chardonnay’, ‘Merlot’ and ‘Cabernet Franc’ grapevine clones “Riesling Itálico”、“Chardonnay”、“Merlot”和“Cabernet Franc”葡萄无性系的农艺评价

Pesquisa Agropecuaria Gaucha Pub Date : 2022-04-20 DOI: 10.36812/pag.202228148-57

R. Anzanello, Tainan Graeff Tasso, Cláudia Martellet Fogaça, A. Cargnin, Leo Duc Haa Carson Schwartzhaupt da Conceição, Gabriele Becker Delwing Sartori, A. Heemann Junges

{"title":"Agronomic evaluation of ‘Riesling Itálico’, ‘Chardonnay’, ‘Merlot’ and ‘Cabernet Franc’ grapevine clones","authors":"R. Anzanello, Tainan Graeff Tasso, Cláudia Martellet Fogaça, A. Cargnin, Leo Duc Haa Carson Schwartzhaupt da Conceição, Gabriele Becker Delwing Sartori, A. Heemann Junges","doi":"10.36812/pag.202228148-57","DOIUrl":"https://doi.org/10.36812/pag.202228148-57","url":null,"abstract":"This study aimed to evaluate clones of ‘Riesling Itálico’, ‘Chardonnay’, ‘Merlot’ and ‘Cabernet Franc’ grapevines that best adapt to the edaphoclimatic conditions in Veranópolis, RS. The experiment was carried out at the State Center for Diagnosis and Research in Fruticulture - DDPA/SEAPDR. Three 'Riesling Itálico' clones (ISV-1, RI12V23, VCR-365), four 'Chardonnay' clones (INRA-95, INRA-132, INRA-548, VCR-6), four 'Merlot' clones (INRA-181, INRA-347, VCR-13, VCR-494) and seven 'Cabernet Franc' clones (INRA-212, INRA-214, ISV-8, ISV-101, VCR-2, VCR- 4, VCR-10) were evaluated. The experimental design was randomized blocks, with 4 replications and 10 plants per plot. The clones were evaluated in the 2020/2021 cycle for phenology (budburst and maturation dates), production (kg/plant, ton/ha weight/bunch) and fruit quality (soluble solids-SS, titratable acidity-AT, pH). The results showed the potentiality of the clone RI12V23 for 'Riesling Itálico', INRA-132 for 'Chardonnay', VCR-13 for 'Merlot' and VCR-10 for 'Cabernet Franc'. The 'Riesling Itálico' and 'Chardonnay' clones showed greater production precocity than the 'Merlot' and 'Cabernet Franc' clones.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46173593","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}

引用次数: 0

Productivity and quality of sweet potato roots cultivation with and without chicken manure 加与不加鸡粪地瓜根栽培的产量和质量

Pesquisa Agropecuaria Gaucha Pub Date : 2022-01-21 DOI: 10.36812/pag.202228136-47

Andersson Daniel Steffler, Eduardo Canepelle, Rodrigo Rotili Junior, Marciel Redin

{"title":"Productivity and quality of sweet potato roots cultivation with and without chicken manure","authors":"Andersson Daniel Steffler, Eduardo Canepelle, Rodrigo Rotili Junior, Marciel Redin","doi":"10.36812/pag.202228136-47","DOIUrl":"https://doi.org/10.36812/pag.202228136-47","url":null,"abstract":"Sweet potato (Ipomoea batatas) has cultural, social and economic importance due to its rusticity and wide climate adaptation, being cultivated in Brazil for human and animal food. However, cultivation is carried out mainly without fertilization and with Creole cultivars. The objective was to evaluate the yield and quality of roots of sweet potato cultivars with and without fertilization of chicken manure in an Oxisol. The experiment was carried out under field conditions in the 2015/16 and 2016/17 seasons in a randomized block design with three replications in 6 m2 plots. Four sweet potato cultivars, BRS Rubissol, BRS Amélia, BRS Cuia and Crioula, were used. Root productivity, number, length and diameter of roots, and cracked roots were evaluated. In both cultivation conditions, the virus-free cultivars Rubissol, Amélia and Cuia showed higher average root yields, 43,941, 45,498 and 52,095 kg ha-1, respectively, compared to the Crioula cultivar with 3,389 kg ha-1. Fertilization with chicken manure does not increase the productivity, number, length and diameter of roots, but it does increase the number of cracked roots. The cultivation of virus-free sweet potato without fertilizer reduces cracked roots by an average of 51.4%.","PeriodicalId":33658,"journal":{"name":"Pesquisa Agropecuaria Gaucha","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45779725","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}

引用次数: 1