Pesquisa Agropecuaria Tropical最新文献

Statistical downscaling in the TRMM satellite rainfall estimates for the Goiás state and the Federal District, Brazil 巴西Goiás州和联邦区TRMM卫星降雨估计的统计降尺度

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Pesquisa Agropecuaria Tropical Pub Date : 2023-08-04 DOI: 10.1590/1983-40632023v5375552

Carlos Cesar Silva Jardim, D. Casaroli, José Alves Júnior, A. W. P. Evangelista, R. Battisti

{"title":"Statistical downscaling in the TRMM satellite rainfall estimates for the Goiás state and the Federal District, Brazil","authors":"Carlos Cesar Silva Jardim, D. Casaroli, José Alves Júnior, A. W. P. Evangelista, R. Battisti","doi":"10.1590/1983-40632023v5375552","DOIUrl":"https://doi.org/10.1590/1983-40632023v5375552","url":null,"abstract":"ABSTRACT Rainfall is a fundamental component of agricultural production, and knowing its potential and variability can ensure the success of this activity. However, the number of meteorological stations is still small, even in states with agricultural aptitude, such as Goiás. Geoprocessing techniques can be used to overcome this problem. Thus, this study aimed to evaluate the products of the Tropical Rainfall Measuring Mission (TRMM) satellite to describe the annual and monthly rainfall variability in the Goiás state and the Federal District (Brazil). Interpolations were carried out to increase the spatial resolution by means of ordinary kriging and cluster analysis for spatial and temporal distribution. It was observed that the evaluated territory can be classified into three regions with differentiated water regimes up to 500 mm annually, with seasonality of accumulated precipitation from November to March. Even though the regression evaluation showed limitations for a monthly precipitation above 200 mm, the analysis of the TRMM satellite products demonstrated that this tool allows forecasts of provisional normals with a higher spatial resolution than the Brazilian National Institute of Meteorology (INMET) stations network, with known measurement errors for each evaluation period, allowing the data application in forecast models for agricultural planning involving water management.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67252252","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: 2

Biochemical characterization of individual and combined plant growth-promoting microorganisms 促进植物生长的微生物个体和组合的生化特性

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Pesquisa Agropecuaria Tropical Pub Date : 2023-08-04 DOI: 10.1590/1983-40632023v5375376

A. Nascente, Zainab Temitope Ishola, M. Filippi, M. A. Silva, D. R. C. Cruz, Gustavo de Andrade Bezerra

引用次数: 0

Influence of native field management on soil, water erosion and nutrient losses 乡土田间管理对水土流失和养分流失的影响

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Pesquisa Agropecuaria Tropical Pub Date : 2023-08-04 DOI: 10.1590/1983-40632023v5375488

Bárbara Bagio, I. Bertol, N. Wolschick, Loriane Bernardi, Marco Fruhauf de Oliveira

引用次数: 0

Genetic diversity and relationship of mango and its wild relatives (Mangifera spp.) based on morphological and molecular markers 基于形态和分子标记的芒果及其野生近缘种的遗传多样性和亲缘关系

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Pesquisa Agropecuaria Tropical Pub Date : 2023-08-04 DOI: 10.1590/1983-40632023v5375339

D. H. Mursyidin

{"title":"Genetic diversity and relationship of mango and its wild relatives (Mangifera spp.) based on morphological and molecular markers","authors":"D. H. Mursyidin","doi":"10.1590/1983-40632023v5375339","DOIUrl":"https://doi.org/10.1590/1983-40632023v5375339","url":null,"abstract":"ABSTRACT Mango and its wild relatives (Mangifera spp.) are essential for future mango breeding, including preservation programs, because they provide many beneficial genes (agronomic traits), particularly those related to resistance to biotic and abiotic stressors. However, there is a limited understanding of the genetic diversity and relationships of this germplasm. This study aimed to determine the diversity and relationship between endemic mango and its wild relatives (Mangifera spp.) from Borneo Island, Indonesia, using leaf morphology and the internal transcribed spacer (ITS) region. Fifteen samples of Mangifera, covering 12 species, were used. Morphologically, the endemic Mangifera had a low diversity of only 0.22. Based on the ITS sequence, Mangifera endemic to Borneo had a high level of genetic diversity (0.069). In addition, this sequence had a total variable number of 215 bp, of which 110 bp were singleton sites, 89 informative parsimony and 41 indels. Phylogenetic analysis showed that Mangifera was grouped into three clusters for leaf morphological traits and four clades for the ITS region. In this case, the furthest relationship was pointed out by ‘Hampalam’ (M. laurina) and ‘Tambusui’ (M. macrocarpa), as well as by ‘Rawa-Rawa’ (M. similis) and ‘Samputar’ (M. torquenda). In contrast, the closest relationship was shown by ‘Hambawang Damar’ (M. foetida) and ‘Hambawang Puntara’ (M. foetida), including ‘Samputar’ (M. torquenda) and ‘Pauh’ (M. quadrifida). In particular, the common mango (M. indica) was closely related to ‘Asam Buluh’ and ‘Hampalam’ (M. laurina) and distantly related to ‘Pauh’ (M. quadrifida) and ‘Rawa-Rawa’ (M. similis).","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"11 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67252102","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

Nitrogen fertilization time affects the root reserves of tropical grasses 施氮时间对热带禾草根系储量有影响

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Pesquisa Agropecuaria Tropical Pub Date : 2023-08-04 DOI: 10.1590/1983-40632023v5375444

Lucas Gimenes Mota, Rodrigo Schaurich Mativi Righi, C. F. D. Duarte, C. E. A. Cabral, C. Cabral

{"title":"Nitrogen fertilization time affects the root reserves of tropical grasses","authors":"Lucas Gimenes Mota, Rodrigo Schaurich Mativi Righi, C. F. D. Duarte, C. E. A. Cabral, C. Cabral","doi":"10.1590/1983-40632023v5375444","DOIUrl":"https://doi.org/10.1590/1983-40632023v5375444","url":null,"abstract":"ABSTRACT Grass regrowth can reduce root mass, delaying reestablishment and grazing periods by reducing the nutrient absorption from the soil by plants. This study aimed to determine the optimal intervals for harvest and nitrogen fertilization in Urochloa brizantha cv. BRS Piatã and Megathyrsus maximus cv. BRS Quênia, as well as to investigate whether the flexibility of the fertilization time is related to the accumulation of water-soluble carbohydrates (WSC) and nitrogen in the roots. The experiment was conducted in a greenhouse, using a completely randomized design, with five treatments (nitrogen fertilization after harvest: 0, 2, 4, 6 and 8 days) and ten replicates. The nitrogen fertilization time linearly reduced the forage and root mass for the BRS Piatã, but had no effect on the BRS Quênia guinea grass. For the BRS Piatã, the WSC and starch concentrations in the roots showed a quadratic response, decreasing from harvest to day 2 and increasing until the day 8. However, the delayed fertilization led to a linear reduction in the root nitrogen content. The nitrogen fertilization time had a quadratic effect on the WSC concentration for the BRS Quênia roots. For the BRS Piatã, the nitrogen fertilization immediately after harvest improves the forage and root masses, WSC and nitrogen reserves. In contrast, the BRS Quênia exhibited a greater flexibility, concerning the nitrogen fertilization time. The interval between harvest and nitrogen fertilization is primarily depended on root mass, which influences the nitrogen accumulation in the roots.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67252183","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

Potassium fertilization and bioactivators on the soybean yield and soil microbiota 钾肥和生物激活剂对大豆产量和土壤微生物群的影响

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Pesquisa Agropecuaria Tropical Pub Date : 2023-07-07 DOI: 10.1590/1983-40632023v5374945

Layanara Oliveira Faria, A. Souza, Matheus Correa de Mello, Mariana Pina da Silva Berti

{"title":"Potassium fertilization and bioactivators on the soybean yield and soil microbiota","authors":"Layanara Oliveira Faria, A. Souza, Matheus Correa de Mello, Mariana Pina da Silva Berti","doi":"10.1590/1983-40632023v5374945","DOIUrl":"https://doi.org/10.1590/1983-40632023v5374945","url":null,"abstract":"ABSTRACT Soil microorganisms are of paramount importance for crop yield. This study aimed to evaluate the effect of potassium chloride doses associated with two bioactivation sources on soybean yield and soil microbial activity. The experimental design was randomized blocks, arranged in a 5 x 2 factorial scheme, with four replications, being the first factor potassium doses (0, 30, 60, 90 and 120 kg ha-1 of K2O), using potassium chloride as a source, and the second factor soil bioactivation products: Penergetic (250 g ha-1) and Efficient Microorganisms (EM) (1:250), with 250 L ha-1 of spray volume. The KCl doses affected the soil microbial activity, while the soil bioactivating sources with the potassium chloride doses did not show significance for the leaf potassium content and soybean yield. K2O doses higher than the maintenance dose for the soybean crop with EM negatively influenced the soil microbial biomass. The EM bioactivator associated with the maintenance dose of K for the soybean crop (60 kg ha-1) is the most appropriate treatment for soil microbial activity, as it is the condition that presents the most stable environment and the highest microbial efficiency.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251763","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

Cover plants in second crop: nutrients in straw and cotton yield in succession 在第二季覆盖植株:秸秆和棉花的养分连续产量

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Pesquisa Agropecuaria Tropical Pub Date : 2023-07-07 DOI: 10.1590/1983-40632023v5375032

A. C. D. B. Ferreira, A. L. D. C. Borin, F. M. Lamas, Valdinei Sofiatti

{"title":"Cover plants in second crop: nutrients in straw and cotton yield in succession","authors":"A. C. D. B. Ferreira, A. L. D. C. Borin, F. M. Lamas, Valdinei Sofiatti","doi":"10.1590/1983-40632023v5375032","DOIUrl":"https://doi.org/10.1590/1983-40632023v5375032","url":null,"abstract":"ABSTRACT The cultivation of cover plants is a strategy for improving the agricultural production environment and providing straw for soil cover in the no-tillage system, in addition to cycling and providing nutrients to succeeding crops. This study aimed to assess the dry matter yield and nutrients accumulation by cover plants grown alone or intercropped in the second crop after soybean and their effects on cotton grown in succession. The treatments were: Urochloa ruziziensis; Pennisetum glaucum (millet); Zea mays (corn); Crotalaria spectabilis; Crotalaria ochroleuca; Cajanus cajan (pigeon pea); corn + U. ruziziensis; C. spectabilis + U. ruziziensis; C. ochroleuca + U. ruziziensis; pigeon pea + U. ruziziensis; corn + C. spectabilis; corn + C. ochroleuca; and corn + pigeon pea. The experimental design consisted of randomized blocks, with four replications, and the experiment was carried out in two crop seasons. In the cotton pre-seeding, the maximum amount of corn straw dry matter was 2,699 kg ha-1, with low macronutrient contents. The pigeon pea intercropped with U. ruziziensis produced between 8,400 and 12,941 kg ha-1 of dry matter, with a maximum content of 223 and 323 kg ha-1 of nitrogen and potassium, respectively. The U. ruziziensis, grown alone or intercropped, provided between 140 and 323 kg ha-1 of potassium in the straw. A high yield is obtained by cotton grown in the no-tillage system in succession to C. spectabilis.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251810","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

Profile of volatile compounds released by Waitea circinata against Magnaporthe oryzae under different periods and temperatures 不同时期、不同温度下，白僵菌对稻瘟病菌挥发性物质的释放特征

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Pesquisa Agropecuaria Tropical Pub Date : 2023-07-07 DOI: 10.1590/1983-40632023v5375038

Luiza Vieira da Cruz, Marcos Henrique Faleiros Santos, Bryna Tamilla Alves Falcão Gama, L. G. Araújo, A. Terezan, J. R. O. Oliveira Neto, L. C. Cunha, Anselmo Elcana de Oliveira, Márcia Matos da Silva, Carla Thaís Pereira Coelho, V. G. Severino

引用次数: 0

Ethanolic extract of Copaifera, Croton and Lippia on the control of phytopathogenic fungi 茯苓乙醇提取物对植物病原真菌的防治作用

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Pesquisa Agropecuaria Tropical Pub Date : 2023-07-07 DOI: 10.1590/1983-40632023v5375126

L. L. Pires, Bruno Arcanjo Silva, E. S. Sousa, Enedina Rodrigues da Silva Neta, Sidney G. Lima, J. E. A. Beserra Júnior

{"title":"Ethanolic extract of Copaifera, Croton and Lippia on the control of phytopathogenic fungi","authors":"L. L. Pires, Bruno Arcanjo Silva, E. S. Sousa, Enedina Rodrigues da Silva Neta, Sidney G. Lima, J. E. A. Beserra Júnior","doi":"10.1590/1983-40632023v5375126","DOIUrl":"https://doi.org/10.1590/1983-40632023v5375126","url":null,"abstract":"ABSTRACT The search for vegetable extracts for phytosanitary control has been expanded to find new active ingredients to control plant diseases. This study aimed to evaluate the in vitro effect of the fixed constituents of Copaifera luetzelburgii, Croton zehntneri and Lippia lasiocalycina, at the concentrations of 2, 20, 200 and 2,000 μg mL-1, on the percentage of mycelial growth inhibition of Colletotrichum siamense, C. truncatum, Fusarium sacchari, F. udum, Lasiodiplodia theobromae and Thielaviopsis ethacetica, as well as the conidium concentration of C. siamense, F. sacchari and F. udum produced in culture medium with all the extracts. The tested ethanolic extract, especially at the highest concentration, inhibited the percentage of mycelial growth and/or conidium concentration of the evaluated fungi. The other concentrations showed low inhibitory effects or no activity against the fungi. The average values for percentage of mycelial growth inhibition of the ethanolic extract from L. lasiocalycina, C. zehntneri and C. luetzelburgii against the six fungi were 62.5, 53.4 and 51.0 %, respectively. The ethanolic extract of L. lasiocalycina showed the most significant effect on the percentage of mycelial growth inhibition and conidia concentration. The fixed constituents of C. luetzelburgii, C. zehntneri and L. lasiocalycina at 2,000 μg mL-1 showed to be efficient in inhibiting the mycelial growth of C. siamense, C. truncatum, F. sacchari, F. udum, L. theobromae and T. ethacetica, and inhibit the conidia production of C. siamense, F. sacchari and F. udum.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251883","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

Soil chemical attributes under combinations of organic fertilizing and water salinity 有机肥与含盐量组合下土壤化学特性研究

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Pesquisa Agropecuaria Tropical Pub Date : 2023-07-07 DOI: 10.1590/1983-40632023v5375156

M. Freire, G. G. Sousa, T. V. D. A. Viana, C. Lessa, F. H. R. Costa

{"title":"Soil chemical attributes under combinations of organic fertilizing and water salinity","authors":"M. Freire, G. G. Sousa, T. V. D. A. Viana, C. Lessa, F. H. R. Costa","doi":"10.1590/1983-40632023v5375156","DOIUrl":"https://doi.org/10.1590/1983-40632023v5375156","url":null,"abstract":"ABSTRACT The use of brackish water causes chemical changes in cultivated soils. It is therefore necessary to apply strategies that can minimize its negative impacts, such as the use of organic fertilizers. This study aimed to evaluate in the field the chemical attributes of a Red Yellow Argisol under irrigation with saline water and organic fertilizing in an area cultivated with corn. The design was randomized blocks, in a split-plot scheme, with the plots comprising salinity levels for the irrigation water (0.8 and 3.0 dS m-1) and the subplots combinations of organic fertilizers (cattle manure + poultry biofertilizer + goat biofertilizer; cattle manure + goat biofertilizer; cattle manure + poultry biofertilizer; control), with four replications. The 3.0 dS m-1 irrigation has a negative effect on the soil chemical attributes, particularly reducing the pH and increasing the sodium, exchangeable sodium percentage and electrical conductivity of the soil saturation extract. The combination of cattle manure + poultry biofertilizer + goat biofertilizer mitigates the salt stress by favouring the accumulation of nitrogen and organic matter, while the cattle manure + poultry biofertilizer favours the potassium accumulation in the soil. The combination of cattle manure + poultry biofertilizer + goat biofertilizer increases the contents of phosphorus and potassium when using the 0.8 dS m-1 irrigation.","PeriodicalId":46867,"journal":{"name":"Pesquisa Agropecuaria Tropical","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67251946","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