Ciencia E Agrotecnologia最新文献_第5页

Does soil cultivation practices and inoculation with Azospirillum brasilense affect the performance of maize genotypes? 土壤耕作方式和接种巴西偶氮螺旋菌是否影响玉米基因型的表现?

4区农林科学

Ciencia E Agrotecnologia Pub Date : 2023-01-01 DOI: 10.1590/1413-7054202347005523

Marcelo Henrique Santos, Wagner Emerson Aguiar, Eliane Cristina Gruszka Vendruscolo, Robson Fernando Missio

{"title":"Does soil cultivation practices and inoculation with Azospirillum brasilense affect the performance of maize genotypes?","authors":"Marcelo Henrique Santos, Wagner Emerson Aguiar, Eliane Cristina Gruszka Vendruscolo, Robson Fernando Missio","doi":"10.1590/1413-7054202347005523","DOIUrl":"https://doi.org/10.1590/1413-7054202347005523","url":null,"abstract":"ABSTRACT One of the bottlenecks for maize (Zea mays L.) production is the need for a large supply of nitrogen fertilizers, which burdens farmers. A solution to this problem is the use of proteobacteria Azospirillum brasilense as an inoculant. However, experimental results regarding this inoculant vary depending, for instance, on the soil cultivation practices used. The objective of this study was to evaluate the influence of inoculation with Azospirillum brasilense on morphophysiological characters and yield characteristics of three maize genotypes in two off-season cultivated in no-tillage system (NT). Fallow soil (FS) was used as control. The results showed that soil cultivation had a significant effect on morphophysiological and productivity parameters compared to inoculation with Azospirillum brasilense. There were no distinct morphophysiological differences among the treatments. FS (inoculated or not) was more closely related to productivity parameters (grain yield-YI, weight of 100 seeds-100SW, plant height-PH and number of leaves-NL) than NT in both off-seasons. Among the hybrids, Dekalb 255 PRO3 (DKB 255) showed the highest YI and 100SW. Thus, this hybrid was considered well-adapted to off-seasons in western Paraná, Brazil. The inoculation effect was practically null and did not influence the estimated productivity of the different chosen hybrids.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136203377","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

Extraction and accumulation of silicon in tomato grown under different water regimes and application forms 不同水分制度和施用方式下番茄硅的提取和积累

4区农林科学

Ciencia E Agrotecnologia Pub Date : 2023-01-01 DOI: 10.1590/1413-7054202347005323

Gustavo Soares Wenneck, Reni Saath, Roberto Rezende, Daniele de Souza Terassi, Vinicius Villa e Vila, Gustavo Lopes Pereira

{"title":"Extraction and accumulation of silicon in tomato grown under different water regimes and application forms","authors":"Gustavo Soares Wenneck, Reni Saath, Roberto Rezende, Daniele de Souza Terassi, Vinicius Villa e Vila, Gustavo Lopes Pereira","doi":"10.1590/1413-7054202347005323","DOIUrl":"https://doi.org/10.1590/1413-7054202347005323","url":null,"abstract":"ABSTRACT The application of silicon (Si) in plants benefits the performance of several species. However, the dynamics of the element, mainly in non-accumulating species such as tomatoes, are rarely analyzed. This study investigated the dynamics of Si in tomato plants cultivated under different forms of application and water conditions. The experiment was carried out in a completely randomized design with four replications, using a factorial scheme 2 x 4: two water conditions (60 and 100% of the evapotranspiration of the crop - ETc), and four forms of silicon application (without application, full dose applied at soil, split dose applied at soil, and foliar application). Si content in the soil and in the different plant organs were analyzed. Si content in the soil increased after the crop cycle depending on the application form (full or split doses). The dynamics of Si accumulation and extraction by tomato are influenced by the application form (higher in soil application) and water management, with fruits and leaves having the higher values. Si application, mainly in the soil, increased the rate of Si accumulation and extraction by tomatoes cultivated in different water conditions.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202239","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

The impact of transmission on maize seed deposition in pneumatic dispensers 传粉对玉米种子沉降的影响

4区农林科学

Ciencia E Agrotecnologia Pub Date : 2023-01-01 DOI: 10.1590/1413-7054202347007723

Gabriel Ganancini Zimmermann, William Santiago de Mendonça, Samir Paulo Jasper, Fernanda Gonçalves Moreno, Rafael Schuster Teixeira, Filipe Afonso Ingles

{"title":"The impact of transmission on maize seed deposition in pneumatic dispensers","authors":"Gabriel Ganancini Zimmermann, William Santiago de Mendonça, Samir Paulo Jasper, Fernanda Gonçalves Moreno, Rafael Schuster Teixeira, Filipe Afonso Ingles","doi":"10.1590/1413-7054202347007723","DOIUrl":"https://doi.org/10.1590/1413-7054202347007723","url":null,"abstract":"ABSTRACT The proper distribution of maize seeds in pneumatic dispensers is essential for high-quality sowing operations. To enhance seed distribution accuracy, advanced pneumatic mechanisms utilizing new electrically driven dosing devices have been developed, as mechanical mechanisms often lead to distribution errors. Consequently, it becomes imperative to assess the impact of these mechanisms, particularly concerning operational speed. This study aims to evaluate the transmission performance of pneumatic dispensers when depositing maize seeds at varying operating speeds. The experiment was conducted on a static simulation bench, employing a completely randomized design and assessing two seed distribution mechanisms at speeds of 5.0, 7.0, 9.0, 11.0, and 13.0 km h-1. Parameters analyzed included acceptable spacing, double failure, coefficient of variation, and precision index, gathered from five repetitions of 250 consecutive seed depositions. The results suggest that the independent electrically driven dosing mechanism outperforms the pneumatic dosing mechanism with mechanical transmission in terms of acceptable spacing (1.27), missing spacing (0.85), and accuracy index (1.31). However, it is crucial to note that an increase in operating speed negatively impacts seed quality for both dispenser drive mechanisms.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135261021","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

Differential composition of reserves and oil of Moringa oleifera seeds cultivated in states of Northeast Brazil 巴西东北部各州种植的辣木种子储量和油的差异组成

4区农林科学

Ciencia E Agrotecnologia Pub Date : 2023-01-01 DOI: 10.1590/1413-7054202347007823

Josyelem Tiburtino Leite Chaves, Toshik Iarley da Silva, Elisa Monteze Bicalho, Ana Cardoso Clemente Filha Ferreira de Paula, Patrícia Carneiro Souto, Jacob Silva Souto

{"title":"Differential composition of reserves and oil of Moringa oleifera seeds cultivated in states of Northeast Brazil","authors":"Josyelem Tiburtino Leite Chaves, Toshik Iarley da Silva, Elisa Monteze Bicalho, Ana Cardoso Clemente Filha Ferreira de Paula, Patrícia Carneiro Souto, Jacob Silva Souto","doi":"10.1590/1413-7054202347007823","DOIUrl":"https://doi.org/10.1590/1413-7054202347007823","url":null,"abstract":"ABSTRACT Moringa oleifera (Lam.) is an oilseed rich in unsaturated fatty acids. The seed reserve composition can change according to environmental conditions of precipitation and temperature. Thus, this work aimed to characterize the M. oleifera seed and its vegetable oil from plants cultivated in different states of Northeast Brazil. Seeds and soil samples were collected in Bahia (BA), Ceará (CE), Paraíba (PB), and Rio Grande do Norte (RN). Regarding climate variables, RN and BA had the lowest (395 mm) and highest (880 mm) precipitation during the collection year, respectively. The size and mass of the seeds and almonds, and the characterization of the flour and the oil of the ‘moringa’ seeds were measured. The largest seeds and almonds were collected in BA and the smallest in RN. The highest protein and moisture contents were obtained in the seeds from CE. The seeds from RN had the highest oil content, unsaturated fatty acids, ashes, acidity, and saponification levels. Thus, RN presents the smallest seeds of M. oleifera with higher content of mineral salts (ashes), oil, and monounsaturated fatty acids.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202450","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

Cacao genotypes cultivated in agroforestry systems in Bahia have wide genetic variability in morpho-agronomic characters 巴伊亚州农林业系统栽培的可可基因型在形态农艺性状上具有广泛的遗传变异

4区农林科学

Ciencia E Agrotecnologia Pub Date : 2023-01-01 DOI: 10.1590/1413-7054202347004923

Marc Ernso Georges, Cláusio Antônio Ferreira Melo, Margarete Magalhães de Souza, Ronan Xavier Corrêa

{"title":"Cacao genotypes cultivated in agroforestry systems in Bahia have wide genetic variability in morpho-agronomic characters","authors":"Marc Ernso Georges, Cláusio Antônio Ferreira Melo, Margarete Magalhães de Souza, Ronan Xavier Corrêa","doi":"10.1590/1413-7054202347004923","DOIUrl":"https://doi.org/10.1590/1413-7054202347004923","url":null,"abstract":"ABSTRACT Cacao fruits are agronomically important and show wide variability for several morphological descriptors. The present study aimed to characterize the genetic distance of 51 genotypes of Theobroma cacao L. in the cocoa-producing region of Southern Bahia (Brazil) based on morpho-agronomic descriptors. The inference of genetic similarity was performed from the phenotypic data derived simultaneously from qualitative and quantitative variables, using the Ward-MLM procedure (Modified Location Model) with the SAS® software. The distance matrix was obtained using the Gower logarithmic function. For this, 28 descriptors were evaluated, five qualitative and 23 quantitative. Furthermore, using the likelihood function procedure, the optimal number of groups was five indicating wide variability. Of 23 quantitative descriptors evaluated by fruits and leaves, 95% showed significant differences. The exception was seed width. Groups 1 and 5 were the most distant, while groups 2, 3, and 4 were closest to each other. The greatest difference between increments was 35.32 for the fifth group. The analysis of the first two canonical axes revealed that both represented 81.88% of the variation, with CAN1 and CAN2 responsible for 53.66% and 28.22% of the variation. The most promising genotypes for breeding programs belong to group 5 due to their superior performance for almost all characteristics analyzed.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135261463","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

The Results of Cochlear Implantation in the Inner Ear Malformations. 内耳畸形人工耳蜗植入术的效果。

4区农林科学

Ciencia E Agrotecnologia Pub Date : 2022-05-01 DOI: 10.5152/iao.2022.20134

Elvan Onan, Ulku Tuncer, Ozgur Surmelioglu, Muhammed Dagkiran, Suleyman Ozdemir, Ozgur Tarkan, Mustafa Mete Kiroglu

{"title":"The Results of Cochlear Implantation in the Inner Ear Malformations.","authors":"Elvan Onan, Ulku Tuncer, Ozgur Surmelioglu, Muhammed Dagkiran, Suleyman Ozdemir, Ozgur Tarkan, Mustafa Mete Kiroglu","doi":"10.5152/iao.2022.20134","DOIUrl":"10.5152/iao.2022.20134","url":null,"abstract":"Background: Cochlear implants are arguably the most successful neural prosthesis today. Cochlear implantation has several difficulties in patients with internal ear anomalies. This study was performed to analyze intraoperative, postoperative findings, and auditory performance of 55 patients who had inner ear malformations and were treated with cochlear implants at Otorhinolaryngology Department of Çukurova University Hospital.Methods: Auditory performances were analyzed in 30 of 55 patients. Patients with cochlear anomalies were evaluated as group I, patients with vestibular malformation as group II, and patients with the normal bone labyrinth as group III. Listening progress profiles and meaningful auditory integration scale tests were used to determine performances.Results: Comparison between the listening progress profiles test performance of the groups at 12th and 18th month of group I was significantly lower than other groups (P < .05) and reached at the same level after the 24th month. Comparison between the meaningful auditory integration scale test performance of groups at 24th and 36th month of group I was significantly lower than other groups (P < .05). Perilymph gusher was observed in 3 patients who had incomplete partition I malformation. Oozing was observed in 50% of incomplete partition II patients. Facial nerve traced a variant course in 4 of 55 patients and 6 patients had postoperative meningitis.Conclusion: Initially patients with inner ear anomalies showed that the level of language development was worse than patients with normal bone anatomy. However, it was shown that they both reached the same point as a result. Facial nerve anomaly and meningitis risk is higher in patients with inner ear malformations.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"1 1","pages":"203-209"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10682797/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89314357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Polyamines mitigate the harmful effects of salt stress on the growth and gas exchange of nasturtium 多胺减轻了盐胁迫对旱金莲生长和气体交换的有害影响

IF 1.1 4区农林科学

Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI: 10.1590/1413-7054202246000722

F. B. S. Santos Filho, T. I. Silva, M. G. Dias, J. Grossi

{"title":"Polyamines mitigate the harmful effects of salt stress on the growth and gas exchange of nasturtium","authors":"F. B. S. Santos Filho, T. I. Silva, M. G. Dias, J. Grossi","doi":"10.1590/1413-7054202246000722","DOIUrl":"https://doi.org/10.1590/1413-7054202246000722","url":null,"abstract":"ABSTRACT Abiotic stresses are one of the major reasons for low crop productivity owing to the disturbances caused by them. Polyamines can be applied to mitigate the harmful effects of stress in plants. Nasturtium (Tropaeolum majus L.) is an ornamental, medicinal, and edible plant that is found in many countries. The objective of this work was to evaluate the effect of polyamines application and salt stress on the growth and leaf gas exchange of T. majus. The treatments to induce salt stress were as follows: 0 mM NaCl (no stress), 40 mM NaCl (moderate stress), 80 mM NaCl (severe stress), 40 mM NaCl + spermine (Spm), 40 mM NaCl + spermidine (Spd), 40 mM NaCl + putrescine (Put), 80 mM NaCl + Spm, 80 mM NaCl + Spd, and 80 mM NaCl + Put. Polyamines were applied every week for four weeks. The applications of Spd and Spm attenuated the harmful effects of moderate salt stress on plant height and leaf fresh mass. The application of Spm attenuated the harmful effects of moderate salt stress on stem diameter. The application of Spd attenuated the harmful effects of moderate salt stress on the number of buds, the stem fresh mass, and total fresh mass. The application of Spm attenuated the harmful effects of severe salt stress on stomatal conductance and transpiration rate and attenuated the harmful effects of moderate salt stress on stomatal conductance, net photosynthesis, and transpiration. The application of Spd attenuated the harmful effects of moderate salt stress on instantaneous water use efficiency and intrinsic water use efficiency. The applications of Spm and Spd application can attenuated the harmful effects of moderate salt stress on the growth and leaf gas exchange of nasturtium.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67202804","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

Corn crop responds positively to fertigation with black water from sewage treated by decentralized anaerobic system 玉米作物对分散厌氧系统处理的污水黑水的施肥反应积极

IF 1.1 4区农林科学

Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI: 10.1590/1413-7054202246001222

P. S. D. Abreu, B. R. Costa, H. Oldoni, Wilson Tadeu Lopes da Silva, L. Bassoi

{"title":"Corn crop responds positively to fertigation with black water from sewage treated by decentralized anaerobic system","authors":"P. S. D. Abreu, B. R. Costa, H. Oldoni, Wilson Tadeu Lopes da Silva, L. Bassoi","doi":"10.1590/1413-7054202246001222","DOIUrl":"https://doi.org/10.1590/1413-7054202246001222","url":null,"abstract":"ABSTRACT The basic sanitation systems are not enough to meet the sanitary requirements in the rural areas of Brazil. Hence, a decentralized anaerobic system was developed by Embrapa to enable the treatment of domestic sewage. The treated sewage effluent (TSE) should be applied to completely replace the N from mineral fertilizer required by corn plants, a typical crop cultivated by Brazilian smallholder farmings for animal feed. Hence, the purpose of this study was to investigate the corn crop responses to the use of TSE as fertilizer. A field experiment was carried out in a sandy clay loam soil at São Carlos, state of São Paulo, Brazil, over 2018-2019 summer growing season of a hybrid corn cultivar with dual aptitude (grain and silage production). Four treatments about application of different nutrient sources were evaluated in a randomized block design with three replications: 1- NPK: urea, simple superphosphate and potassium chloride as nutrient sources; 2- EfPK: TSE as N source + PK from mineral fertilizers; 3- Ef: TSE only; 4- PK: mineral fertilizers only. TSE was applied to crop by short and closed-end furrow irrigation. TSE can be used as a source of nitrogen mainly and other nutrients for corn crop nutrition based on the knowledge of effluent nutrient concentrations. TSE split application through fertirrigation can lead to corn yield parameters close to those from NPK application using only mineral fertilizers as nutrient sources. The reuse of this wastewater is feasible for small-scale corn production which is typical of Brazilian smallholder farming.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67203043","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

Actinobacteria hydrolase producer in solid-state fermentation using licuri 利用licuri进行固体发酵的放线菌水解酶产生菌

IF 1.1 4区农林科学

Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI: 10.1590/1413-7054202246020721

Heb C.S.R. Rodrigues, A. L. Carvalho, Leonaiara Mariano Santos, Andreza Borba da Silva, M. A. Umsza-Guez

{"title":"Actinobacteria hydrolase producer in solid-state fermentation using licuri","authors":"Heb C.S.R. Rodrigues, A. L. Carvalho, Leonaiara Mariano Santos, Andreza Borba da Silva, M. A. Umsza-Guez","doi":"10.1590/1413-7054202246020721","DOIUrl":"https://doi.org/10.1590/1413-7054202246020721","url":null,"abstract":"ABSTRACT In recent times, green technologies have gained space and interest in many industrial sectors. Examples of this are enzymes, which can be obtained by solid-state fermentation using microorganisms and agro-industrial residues as substrates. In this context, this study aimed to verify the production of hydrolases leading to Arthrobacter polychromogenes and Streptomyces violaceoruber strains as producers and the influence of moisture and residues of licuri [Syagrus coronata (Martius) Beccari] and wheat as substrates. The solid-state fermentation was performed at 28 °C/12 days, with different ratios of wheat bran/degreased almond licuri cake: 0/70%, 10/60%, 35/35%, 60/10% and 70/0%; and licuri peel, set at 30%. The medium moisture ranged from 29 to 67%. Licuri peel was added to facilitate aeration of the medium; wheat bran is commonly used to produce lipases and pectinases; and degreased almond licuri cake is the substrate of interest in this work, since it was inspired by the extractive production of licuri in the semiarid region of Brazil. The wheat bran/degreased almond licuri cake ratio did not affect enzyme production by A. polychromogenes; however, with S. violaceoruber, the ratio value was significant for lipase production but not for pectinases. The medium prepared with 67% moisture and equal ratios of wheat bran and degreased almond licuri cake (35/35%) presented the highest enzymatic activities for both enzymes, 840.46 U/gds for lipases and 15.53 U/gds for pectinases, during Composite Central Design assays. With validation experiments, it was verified that licuri residues can be used as substrates for the production of hydrolases by solid-state fermentation and that actinobacteria evaluated are suitable microorganisms.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67204044","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

Quality of African mahogany seedlings in substrates with soils from the Cerrado biome 非洲红木幼苗在塞拉多生物群系土壤基质中的质量

IF 1.1 4区农林科学

Ciencia E Agrotecnologia Pub Date : 2022-01-01 DOI: 10.1590/1413-7054202246000221

Aldemir Lucena Junior, A. Silva, L. F. S. Dionísio, G. R. Silva, G. O. Sousa, C. B. Moraes

{"title":"Quality of African mahogany seedlings in substrates with soils from the Cerrado biome","authors":"Aldemir Lucena Junior, A. Silva, L. F. S. Dionísio, G. R. Silva, G. O. Sousa, C. B. Moraes","doi":"10.1590/1413-7054202246000221","DOIUrl":"https://doi.org/10.1590/1413-7054202246000221","url":null,"abstract":"ABSTRACT The organic residues can be used in the composition of substrates, but there is a need to demonstrate the technical efficiency of organic residues. The objective was to evaluate substrates composed of varying proportions of soil of different texture and organic residues, in order to obtain good quality African mahogany seedlings. The experiment was carried out in two stages, one in a forest nursery and the other in the field, both located in the Cerrado biome, Western Maranhão, Northeast region of Brazil. The design was in randomized blocks, with eleven treatments and seven replications. The morphological variables of growth and quality were evaluated for 105 days in the nursery and 270 days in the field. The results showed that all substrates produced seedlings with adequate robustness and Dickson quality index. The seedlings produced in substrates with proportions ranging from 70 to 30% of soil, 15 to 30% of tanned cattle manure and 15 to 20% of carbonized rice husks presented a better quality standard, considering the higher values of nutrient content, morphological characteristics and Dickson quality index. However, when planted in the field, only seedlings that were produced in substrates with clayey textured soil, with up to 20% of carbonized rice husk, showed greater growth in height, as the substrate remained adhered to the root when removed from the container. Therefore, the adherence of the substrate to the root system of the seedlings was the main factor for the greater growth of the seedlings under field conditions.","PeriodicalId":10188,"journal":{"name":"Ciencia E Agrotecnologia","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67203085","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