Pesquisa Agropecuaria Brasileira最新文献_第3页

Decreased spacing with different numbers of branches to enhance green fig production 减少不同枝数的间距，提高绿无花果产量

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-29 DOI: 10.1590/s1678-3921.pab2023.v58.03135

R. Pio, Oscar Misael Peralta Sanchez, Carlos Henrique Milagres Ribeiro, Lucídio Henrique Vote Fazenda, Alexandre Dias da Silva, P. M. Peche

{"title":"Decreased spacing with different numbers of branches to enhance green fig production","authors":"R. Pio, Oscar Misael Peralta Sanchez, Carlos Henrique Milagres Ribeiro, Lucídio Henrique Vote Fazenda, Alexandre Dias da Silva, P. M. Peche","doi":"10.1590/s1678-3921.pab2023.v58.03135","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03135","url":null,"abstract":"Abstract The objective of this work was to evaluate the effect of decreased spacing between 'Roxo de Valinhos' fig (Ficus carica) trees with different numbers of fruiting branches on green fig production. Fig trees, with two or four fruiting branches, were distributed in four blocks, at a standard spacing of 2.5 m between rows, three spacing between plants in a row (0.50, 0.75, and 1.00 m), and densities of 8,000, 5,333, and 4,000 plants per hectare. The experiment was conducted during two cycles (2020/2021 and 2021/2022). Green fruits were harvested twice a week, and the total number of fruits per harvest and the total harvest weight per plant were quantified. The average production per plant and the estimated yield were calculated for each evaluation cycle. Decreasing the spacing between fig trees increases their yield. The spacing of 0.50 m decreases production per plant, but increases yield in 73%. There is no difference in the production of green figs between trees with two or four fruiting branches.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical attributes of an Oxisol with the addition of conilon coffee straw biochar 添加康尼隆咖啡秸秆生物炭的氧化溶胶的化学性质

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-19 DOI: 10.1590/s1678-3921.pab2023.v58.03019

A. C. Alvarenga, R. R. Passos, F. V. Andrade, E. Mendonça, O. Rangel, Lázaro Longue Mosa

{"title":"Chemical attributes of an Oxisol with the addition of conilon coffee straw biochar","authors":"A. C. Alvarenga, R. R. Passos, F. V. Andrade, E. Mendonça, O. Rangel, Lázaro Longue Mosa","doi":"10.1590/s1678-3921.pab2023.v58.03019","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03019","url":null,"abstract":"Abstract The objective of this work was to evaluate the effects of increasing rates of biochar produced with coffee straw, at two pyrolysis temperatures, on the chemical attributes of an Oxisol cultivated with conilon coffee (Coffea canephora) and on the nutrient content of coffee tree leaves. Treatments consisted of pyrolysis at two temperatures (350 and 600 °C) and of five biochar rates (0, 5, 10, 15, and 20 Mg ha-1). The following soil chemical attributes were evaluated: pH in water; P, K, Ca, Mg, Al, H+Al, Zn, Cu, Fe, and Mn contents; effective and potential cation exchange capacity (CEC); sum of bases (SB); base (V) and aluminium (m) saturation; and N, P, K, Ca, Mg, Zn, Cu, Fe, and Mn contents in the leaves. The biochar produced at 600°C, at rates of 10 and 15 Mg ha-1, promoted a greater K release into the soil. Regardless of temperature, coffee straw biochar increased K and P availability, sum of bases, base saturation, and CEC in the soil, but did not influence macro- and micronutrient contents in the leaves. The addition of increasing rates of coffee straw biochar in the soil increases P, K, Mg, SB, CEC, and V, regardless of pyrolysis temperature.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphological and yield responses of 'BRS Vitória' grapevines subjected to bio-fertigation with aquaculture wastewater 水产养殖废水生物施肥对‘BRS Vitória’葡萄植株形态和产量的影响

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-19 DOI: 10.1590/s1678-3921.pab2023.v58.02986

C. Aquino, A. M. Souza, Edvânia Ramos Barbosa, Erick D. Santos, Adelson de Brito Souza, Michelle Soares da Silva

{"title":"Morphological and yield responses of 'BRS Vitória' grapevines subjected to bio-fertigation with aquaculture wastewater","authors":"C. Aquino, A. M. Souza, Edvânia Ramos Barbosa, Erick D. Santos, Adelson de Brito Souza, Michelle Soares da Silva","doi":"10.1590/s1678-3921.pab2023.v58.02986","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.02986","url":null,"abstract":"Abstract The objective of this work was to evaluate the agronomic responses of 'BRS Vitória' grapevines under bio-fertigation with and without conventional soil fertilizer. A completely randomized design was used, with three treatments and 18 replicates. The treatments were: CFI, conventional soil fertilizer and irrigation; BF+CF, bio-fertigation and conventional fertilizer; and BF, only bio-fertigation. The following variables were evaluated: graft and rootstock diameters; plant growth; number of lateral buds; root, leaf, petiole, and gem starch contents; bunch number per plant, length, circumference, and fresh weight; berry number per bunch, length, diameter, fresh weight, soluble solid contents, titratable acidity, and pH; yield; and leaf macro- and micronutrient contents. From 100 to 150 days after transplanting (DAT), rootstock and graft diameters were similar, increasing from 250 to 300 DAT in the CFI treatment. The highest root starch content was 7.19% in BF at 150 DAT and 37.35% in BF+CF at 300 DAT. The plants in BF+CF showed the best results for bunch number per plant and fresh weight, resulting in a fruit yield 22% higher than that obtained in the other treatments. 'BRS-Vitória' grapevines show a satisfactory agronomic performance when bio-fertigated.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meta-analysis of meat quality of cattle slaughtered with different subcutaneous fat thicknesses 不同皮下脂肪厚度屠宰牛肉质的meta分析

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-19 DOI: 10.1590/s1678-3921.pab2023.v58.03110

R. F. Pacheco, D. S. Machado, J. Restle, Dayana Bernardi Sarzi Sartori, P. T. Costa, R. Z. Vaz

{"title":"Meta-analysis of meat quality of cattle slaughtered with different subcutaneous fat thicknesses","authors":"R. F. Pacheco, D. S. Machado, J. Restle, Dayana Bernardi Sarzi Sartori, P. T. Costa, R. Z. Vaz","doi":"10.1590/s1678-3921.pab2023.v58.03110","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03110","url":null,"abstract":"Abstract The objective of this work was to evaluate, through meta-analysis, the impact of subcutaneous fat thickness on beef qualitative traits. Combined data from 13 studies were used, comprising 245 carcasses of male bovines slaughtered in Brazil. Effect size for all parameters was calculated as mean difference or standardized mean difference, at 95% probability. The meta-analysis of random and fixed effects was carried out when I2>50% and I2<50%, respectively, for each indicator separately, with means for fat thickness, classified in the “control” (3–6 mm), “low” (<3 mm), and “high” (>6 mm) groups. Carcasses in the “high” group showed greater intramuscular fat deposition, whereas those in the “low” group presented an intramuscular fat deposition similar to that of the control. When the fat thickness was below the recommended threshold of 3 mm, shear force increased. Subcutaneous fat thickness values greater than 6 mm induced a positive change in the perception of tenderness by the panel of evaluators. Beef carcasses with a subcutaneous fat thickness over 6 mm tend to accumulate more intramuscular fat content and are tenderer for consumers’ acceptance. Carcasses with a fat thickness less than 3 mm produce tougher meat.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Dietary effects of cottonseed and vitamin E on greenhouse gas emissions from cattle feces analyzed in biodigesters 饲料中添加棉籽和维生素E对牛粪温室气体排放的影响

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-19 DOI: 10.1590/s1678-3921.pab2023.v58.03037

R. Nogueira, Flávio Perna Junior, R. Tseu, P. H. Rodrigues

{"title":"Dietary effects of cottonseed and vitamin E on greenhouse gas emissions from cattle feces analyzed in biodigesters","authors":"R. Nogueira, Flávio Perna Junior, R. Tseu, P. H. Rodrigues","doi":"10.1590/s1678-3921.pab2023.v58.03037","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03037","url":null,"abstract":"Abstract The objective of this work was to evaluate the effect of diets with cottonseed and vitamin E on the greenhouse gas (GHG) emissions of cattle feces analyzed in biodigesters. Animal feces were evaluated in 18 laboratory-scale anaerobic digesters through the following treatments: control, feces from cows fed with a control diet; CS, feces from cows fed with a cottonseed diet; and CSVitE, feces from cows fed with a cottonseed and vitamin E diet. The production of biogas and GHG was measured, and no differences were observed for the emissions of biogas, methane (CH4), and nitrous oxide (N2O). The partition of the gross energy of the anaerobic digestion process was similar among treatments. On average, 28% of gross energy fed was released as CH4, 47% during digestion, and 25% as other gases and heat. The addition of cottonseeds to the cattle diet increases the concentration of CH4 and reduces that of CO2, but it does not affect the total production of CH4, CO2, and N2O in the biodigesters. The inclusion of vitamin E in the diet has no effect on GHG production in the biodigesters.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67609702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reproductive performance of hair sheep under different body conditions and feeding levels 不同体况和饲喂水平下毛羊繁殖性能的研究

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-19 DOI: 10.1590/s1678-3921.pab2023.v58.03092

J. González-Maldonado, Olga Tejeda-Sartorius, Anayansi Ivette Ramírez-Ramírez, J. Gallegos-Sánchez

引用次数: 0

Na+ exclusion and proline accumulation in Urochloa spp. cultivars 褐藻品种Na+排斥与脯氨酸积累

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-05-19 DOI: 10.1590/s1678-3921.pab2023.v58.03131

Cicero Lucas da Silva, Rita de Cássia Alves de Britto Ferreira, J. Alvarez-Pizarro

{"title":"Na+ exclusion and proline accumulation in Urochloa spp. cultivars","authors":"Cicero Lucas da Silva, Rita de Cássia Alves de Britto Ferreira, J. Alvarez-Pizarro","doi":"10.1590/s1678-3921.pab2023.v58.03131","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03131","url":null,"abstract":"Abstract The objective of this work was to evaluate the effect of salinity on Na+ and K+ distribution and on proline content in Urochloa brizantha and Urochloa decumbens grass cultivars. Plants were grown in nutrient solution and subjected to salt stress for nine days. Shoot and root lengths and proline, total chlorophyll, K+, and Na+ contents were determined. Salt stress reduced the shoot length of cultivar Marandu but not of Xaraés and Basilisk. Total chlorophyll content was not affected by salinity in U. brizantha cultivars, but increased in cultivar Basilisk of U. decumbens. Salt-induced proline accumulation was observed in all cultivars, with a higher increase in Marandu. The K+ content in leaf blades increased in the Marandu and Basilisk cultivars under salinity conditions. 'Basilisk' showed Na+ exclusion in shoot tissues, whereas 'Marandu' and 'Piatã', followed by 'Xaraés', exhibited a higher Na+ in leaf blades. The pattern of ion distribution among cultivars was attributed mainly to differences in the ability to control the ion transport from root to shoot, since the rates of ion uptake were similarly affected by salinity. Tolerance to salt stress in grasses of the Urochloa genus is associated to Na+ exclusion and not to proline accumulation in shoot tissues.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of variance in augmented block design and Scott-Knott’s test in hybrid corn selection studies 杂交玉米选择研究中增强块设计和Scott-Knott试验的方差分析

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-03-13 DOI: 10.1590/s1678-3921.pab2022.v57.03023

Juaci Vitória Malaquias, R. Amabile, Felipe Zorzo, João Victor Pinheiro Melo, M. Fagioli

引用次数: 0

Wheat grain biofortification for essential amino acids 小麦谷物必需氨基酸的生物强化

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-03-13 DOI: 10.1590/s1678-3921.pab2023.v58.02860

Murilo Vieira Loro, I. Carvalho, A. Cargnelutti Filho, J. Hoffmann, K. Kehl

{"title":"Wheat grain biofortification for essential amino acids","authors":"Murilo Vieira Loro, I. Carvalho, A. Cargnelutti Filho, J. Hoffmann, K. Kehl","doi":"10.1590/s1678-3921.pab2023.v58.02860","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.02860","url":null,"abstract":"Abstract The objective of this work was to select wheat genotypes aiming to increase the essential amino acids in their grains. The study was carried out in the 2019 crop year, in a randomized complete block design, organized in a 5x5 factorial arrangement – five environments in the state of Rio Grande do Sul, Brazil (Cachoeira do Sul, Cruz Alta, Santo Augusto, São Gabriel, and Vacaria), and five wheat genotypes ('BRS Parrudo', 'Marfim', 'Quartzo', 'TBIO Mestre', and 'TBIO Sinuelo') –, with two replicates. Polar metabolites were extracted from the flour of the ground wheat grains, derivatized, and evaluated by gas chromatography-mass spectrometry. Both variance components and genetic parameters were estimated for the metabolites. To select the genotypes for the traits of interest, the multi-trait index based on factor analysis and ideotype design, the multi-trait genotype-ideotype distance index, and the multi-trait stability index were applied. The wheat genotypes express a high genetic variability and selection possibility for gentiobiose, butyric acid, galactopyranosyl, phenylalanine, tryptophan, leucine, and isoleucine. The 'Marfim' genotype remains stable for essential amino acid levels in the studied environments. The 'Quartzo' genotype stands out in the expression of leucine, isoleucine, phenylalanine, and tryptophan in its grains.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67609951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Maturation and detachment force for mechanized harvesting of irrigated Conilon coffee in the Brazilian Cerrado 巴西塞拉多灌溉Conilon咖啡机械化收获的成熟和分离力

IF 0.8 4区农林科学

Pesquisa Agropecuaria Brasileira Pub Date : 2023-02-17 DOI: 10.1590/s1678-3921.pab2023.v58.02967

Mateus Rollemberg Santin, R. Amabile, Juaci Vitória Malaquias, A. Veiga, F. A. A. Brige, P. I. A. Sala

{"title":"Maturation and detachment force for mechanized harvesting of irrigated Conilon coffee in the Brazilian Cerrado","authors":"Mateus Rollemberg Santin, R. Amabile, Juaci Vitória Malaquias, A. Veiga, F. A. A. Brige, P. I. A. Sala","doi":"10.1590/s1678-3921.pab2023.v58.02967","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2023.v58.02967","url":null,"abstract":"Abstract The objective of this work was to determine the force required to detach fruits of Conilon coffee (Coffea canephora) genotypes in five maturation stages, to determinate the best stage for mechanized harvest, and to verify the possibility of future selections of genotypes adapted to mechanized harvesting. Harvests were carried out in the 2013/2014 crop season, and the detachment force was determined based for six fruits from each side of the crop row, collected randomly from the middle third of the plants. The detachment force curve was obtained for each cycle through logistic regression, using the R software. According to the duration of their cycle, the genotypes were divided into super early, early, medium, and semilate; the values of the coefficients of the detachment force curve equation were also obtained. There is genetic variability regarding fruit detachment force throughout the maturation cycle, which indicates the possibility of selecting genotypes adapted to mechanized harvesting. Fruit detachment force shows a considerable drop in the final stages of maturation. The raisin stage is the best for the mechanized harvest of irrigated Conilon coffee in the Cerrado.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0