Larissa Oliveira Fontes, Francisco Cláudio Lopes de Freitas, Mauri Martins Teixeira, Ítalo Nunes Silva, Robson WIllian Nunes Lopes
This study aimed to evaluate the influence of air assistance on the coverage, droplet density, and deposition of the mixture volume applied to melon plants. The experiment was conducted in a completely randomized design set up in a 4 x 4 x 2 factorial arrangement referring to four spray nozzles (AVI 110-02, TT 110-02, AVI 110-03, and TT 110-03), four mixture volumes (140, 200, 300, and 400 L ha-1), and two application techniques (with and without air assistance), at a constant working pressure of 300 kPa. Deposition analysis was performed by using a bright blue dye, and the coverage pattern and droplet density were analyzed using water-sensitive paper tags attached to the adaxial and abaxial surfaces of the leaf blade of melon plants. Air assistance in the spray boom improved the deposition of the mixture sprayed on melon leaves only when using nozzle TT 110-02, whereas nozzles TT 110-03, AVI 110-02, and AVI 110-03 were not influenced by air assistance. Coverage and spray deposition on the adaxial leaf surface increased with the mixture volume applied for all nozzles. The technique using water-sensitive tags is not efficient to evaluate droplet density when working with high spray volumes.
本研究旨在评估空气辅助对喷洒在甜瓜植株上的混合物的覆盖率、液滴密度和沉积量的影响。实验采用 4 x 4 x 2 因式排列的完全随机设计，包括四个喷嘴（AVI 110-02、TT 110-02、AVI 110-03 和 TT 110-03）、四种混合物容量（140、200、300 和 400 升/公顷-1）以及两种施用技术（有空气辅助和无空气辅助），工作压力恒定为 300 千帕。使用亮蓝色染料进行沉积分析，并使用贴在甜瓜植株叶片正面和背面的水敏纸标签分析覆盖模式和液滴密度。只有在使用喷嘴 TT 110-02 时，喷雾臂中的空气辅助才会改善混合物在甜瓜叶片上的沉积，而喷嘴 TT 110-03、AVI 110-02 和 AVI 110-03 则不受空气辅助的影响。所有喷嘴在叶片正面的覆盖率和喷雾沉积量都随着混合物用量的增加而增加。使用水敏标签的技术无法有效评估大喷洒量时的液滴密度。
{"title":"Air assistance and spray volumes on the coverage, droplet density, and spray deposition in melon plants","authors":"Larissa Oliveira Fontes, Francisco Cláudio Lopes de Freitas, Mauri Martins Teixeira, Ítalo Nunes Silva, Robson WIllian Nunes Lopes","doi":"10.14295/cs.v15.4014","DOIUrl":"https://doi.org/10.14295/cs.v15.4014","url":null,"abstract":"This study aimed to evaluate the influence of air assistance on the coverage, droplet density, and deposition of the mixture volume applied to melon plants. The experiment was conducted in a completely randomized design set up in a 4 x 4 x 2 factorial arrangement referring to four spray nozzles (AVI 110-02, TT 110-02, AVI 110-03, and TT 110-03), four mixture volumes (140, 200, 300, and 400 L ha-1), and two application techniques (with and without air assistance), at a constant working pressure of 300 kPa. Deposition analysis was performed by using a bright blue dye, and the coverage pattern and droplet density were analyzed using water-sensitive paper tags attached to the adaxial and abaxial surfaces of the leaf blade of melon plants. Air assistance in the spray boom improved the deposition of the mixture sprayed on melon leaves only when using nozzle TT 110-02, whereas nozzles TT 110-03, AVI 110-02, and AVI 110-03 were not influenced by air assistance. Coverage and spray deposition on the adaxial leaf surface increased with the mixture volume applied for all nozzles. The technique using water-sensitive tags is not efficient to evaluate droplet density when working with high spray volumes.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"119 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140475560","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}
Zeina Thamer Abd ULHussein Al Rufaye, Warqaa Muhammed Shariff AL Sheikh, Intisar Kadhum Ghaleb
Abstract Gray leaf spot, Occurs due to Stemphylium spp., is a foliar disease in tomato. The Resistance against gray leaf spot disease is conferred by a single incompletely dominant gene Sm located on chromosome 11. This study aimed to identify cultivar resistant alleles or susceptible alleles by molecular marker tightly linked to the Sm gene and the use of marker-assisted selection inbreeding. In this study, we used eight tomato cultivars Farmed in Iraq. The analysis demonstrated that the co-dominant marker Sm-InDel, which produced 122-bp fragment for resistance in seven genotypes and a 140-bp fragment for susceptible alleles in one genotype, respectively could be utilized in Marker-assisted selection (MAS)for gray leaf spot resistance.
{"title":"Detection Of Sm Gene Resistance To Gray Leaf Spot In (Stemphylium Spp.) Tomato Cultivars Iraq","authors":"Zeina Thamer Abd ULHussein Al Rufaye, Warqaa Muhammed Shariff AL Sheikh, Intisar Kadhum Ghaleb","doi":"10.14295/cs.v15.3564","DOIUrl":"https://doi.org/10.14295/cs.v15.3564","url":null,"abstract":"Abstract\u0000Gray leaf spot, Occurs due to Stemphylium spp., is a foliar disease in tomato. The Resistance against gray leaf spot disease is conferred by a single incompletely dominant gene Sm located on chromosome 11. This study aimed to identify cultivar resistant alleles or susceptible alleles by molecular marker tightly linked to the Sm gene and the use of marker-assisted selection inbreeding. In this study, we used eight tomato cultivars Farmed in Iraq. The analysis demonstrated that the co-dominant marker Sm-InDel, which produced 122-bp fragment for resistance in seven genotypes and a 140-bp fragment for susceptible alleles in one genotype, respectively could be utilized in Marker-assisted selection (MAS)for gray leaf spot resistance.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"689 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140474662","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}
Rubia Dos Santos Bonapaz, Allison John de Sousa, Suelen Cristina Pinto, Marcelo Roberto Kuczer, Emir Artaban Zórtéa, Cacilda Márcia Duarte Rios Faria, Renato Vasconcelos Botelho
This work aimed to evaluate the efficiency of biocontrol agents in controlling green mold (Penicillium digitatum) in 'pera' orange fruits. In vitro experiments were carried out with a fungus isolate grown on BDA medium and tested against different concentrations of commercial products based on biocontrol agents: Trichoderma harzianum (0, 5, 10, 15, 20 and 25 mL L -1 ), Bacillus subtilis (0, 2, 4, 6, 8 and 10 mL L -1 ) and B. licheniformis + B. subtilis + T. longibrachiatum (0, 5, 10, 15, 20 and 25 g L -1 ) and the fungicide imazalil as standard (2 mL L -1 ). The experiment analyzed mycelial growth and spore germination. Based on the results, in vivo tests were carried out, evaluating the curative and preventive effect of applying biocontrol agents as inoculating with 10 µL of conidial suspension (108 conidia mL-1). All biochemical agents displayed 100% control over mycelial growth and a linear effect to inhibit the germination of P. digitatum. The in vivo tests highlighted that all agents showed a linear effect, both in the curative and preventive effects, significantly reducing the development of green mold (AUDPC) in 'pera' orange fruits. The experiment concludes that the prophylactic application of 25 mL L -1 of T. harzianum, 10 mL L -1 of B. subtilis, and 25 g L -1 of B. licheniformis + B. subtilis + T. longibrachiatum in orange fruits 'pera' control P. digitatum.
这项工作的目的是评估生物控制剂在控制 "pera "橙果实中的绿霉菌（数字青霉）方面的效率。在 BDA 培养基上生长的真菌分离物进行了体外实验，并与不同浓度的生物控制剂商业产品进行了对比测试：毛霉（0、5、10、15、20 和 25 mL L -1 ）、枯草芽孢杆菌（0、2、4、6、8 和 10 mL L -1 ）、地衣芽孢杆菌 + 枯草芽孢杆菌 + 长链霉素（0、5、10、15、20 和 25 g L -1 ）以及标准杀菌剂咪鲜胺（2 mL L -1 ）。实验分析了菌丝生长和孢子萌发情况。根据结果，进行了体内试验，评估了使用生物控制剂的治疗和预防效果，即接种 10 µL 分生孢子悬浮液（108 个分生孢子 mL-1）。所有生化制剂对菌丝生长的控制率都达到了 100%，并且对抑制地衣芽孢杆菌的发芽有线性作用。体内试验结果表明，所有生化制剂在治疗和预防方面都显示出线性效应，能显著减少 "pera "橙子中绿色霉菌（AUDPC）的发展。实验得出的结论是，在 "pera "橙子中预防性施用 25 mL L -1 的哈茨酵母菌、10 mL L -1 的枯草芽孢杆菌和 25 g L -1 的地衣芽孢杆菌 + 枯草芽孢杆菌 + 长枝酵母菌可控制地衣芽孢杆菌。
{"title":"Biocontrol agents against Penicillium digitatum in 'pera' orange","authors":"Rubia Dos Santos Bonapaz, Allison John de Sousa, Suelen Cristina Pinto, Marcelo Roberto Kuczer, Emir Artaban Zórtéa, Cacilda Márcia Duarte Rios Faria, Renato Vasconcelos Botelho","doi":"10.14295/cs.v15.3767","DOIUrl":"https://doi.org/10.14295/cs.v15.3767","url":null,"abstract":"This work aimed to evaluate the efficiency of biocontrol agents in controlling green mold (Penicillium digitatum) in 'pera' orange fruits. In vitro experiments were carried out with a fungus isolate grown on BDA medium and tested against different concentrations of commercial products based on biocontrol agents: Trichoderma harzianum (0, 5, 10, 15, 20 and 25 mL L -1 ), Bacillus subtilis (0, 2, 4, 6, 8 and 10 mL L -1 ) and B. licheniformis + B. subtilis + T. longibrachiatum (0, 5, 10, 15, 20 and 25 g L -1 ) and the fungicide imazalil as standard (2 mL L -1 ). The experiment analyzed mycelial growth and spore germination. Based on the results, in vivo tests were carried out, evaluating the curative and preventive effect of applying biocontrol agents as inoculating with 10 µL of conidial suspension (108 conidia mL-1). All biochemical agents displayed 100% control over mycelial growth and a linear effect to inhibit the germination of P. digitatum. The in vivo tests highlighted that all agents showed a linear effect, both in the curative and preventive effects, significantly reducing the development of green mold (AUDPC) in 'pera' orange fruits. The experiment concludes that the prophylactic application of 25 mL L -1 of T. harzianum, 10 mL L -1 of B. subtilis, and 25 g L -1 of B. licheniformis + B. subtilis + T. longibrachiatum in orange fruits 'pera' control P. digitatum.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"391 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140473097","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}
Leonardo Pereira da Silva Brito, Ellison Rosario de Oliveira, Paulo Henrique Dionizio Luiz, José Darlan Ramos, Letícia Gabriela Ferreira de Almeida, Verônica Andrade Dos Santos
The analysis of productive architecture of plants involves macroscopic observation of spatial distributions of different vegetative and reproductive organs. However, few studies have evaluated these aspects in dragon fruit plants for production purposes. The objective of this study was to evaluate vegetative, reproductive, and quality parameters of dragon fruit plants (Hylocereus polyrhizus; variety Cebra) based on the position and size of cladodes, considering morphological, production, and quality characteristics of the fruits. The experiment was conducted from September 2016 to May 2018, using a completely randomized design in a 3×4 factorial arrangement, consisted of three positions of cladode insertion in the plant (primary, secondary, and tertiary) and four different cladode sizes (≤ 20 cm; 21-40 cm; 41-60 cm, and 61-80 cm), with five replications and six cladodes per plot, totaling 360 evaluated cladodes. According to the results, vegetative and reproductive characteristics of dragon fruit plants variety Cebra were affected by the cladode position and size. Fruits developed on primary cladodes with sizes of 21 to 40 cm presented, in general, better-quality characteristics. All evaluated physical and physicochemical characteristics were affected by the cladode position and size, except for titratable acidity and soluble solids to titratable acidity ratio. Fruits developed on cladodes smaller than 20 cm had lower quality. Therefore, maintaining and promoting the growth of primary cladodes with sizes of 21 to 40 cm and removing those smaller than 20 cm is recommended.
{"title":"Production performance of Hylocereus polyrhizus based on cladode size and position","authors":"Leonardo Pereira da Silva Brito, Ellison Rosario de Oliveira, Paulo Henrique Dionizio Luiz, José Darlan Ramos, Letícia Gabriela Ferreira de Almeida, Verônica Andrade Dos Santos","doi":"10.14295/cs.v15.3547","DOIUrl":"https://doi.org/10.14295/cs.v15.3547","url":null,"abstract":"The analysis of productive architecture of plants involves macroscopic observation of spatial distributions of different vegetative and reproductive organs. However, few studies have evaluated these aspects in dragon fruit plants for production purposes. The objective of this study was to evaluate vegetative, reproductive, and quality parameters of dragon fruit plants (Hylocereus polyrhizus; variety Cebra) based on the position and size of cladodes, considering morphological, production, and quality characteristics of the fruits. The experiment was conducted from September 2016 to May 2018, using a completely randomized design in a 3×4 factorial arrangement, consisted of three positions of cladode insertion in the plant (primary, secondary, and tertiary) and four different cladode sizes (≤ 20 cm; 21-40 cm; 41-60 cm, and 61-80 cm), with five replications and six cladodes per plot, totaling 360 evaluated cladodes. According to the results, vegetative and reproductive characteristics of dragon fruit plants variety Cebra were affected by the cladode position and size. Fruits developed on primary cladodes with sizes of 21 to 40 cm presented, in general, better-quality characteristics. All evaluated physical and physicochemical characteristics were affected by the cladode position and size, except for titratable acidity and soluble solids to titratable acidity ratio. Fruits developed on cladodes smaller than 20 cm had lower quality. Therefore, maintaining and promoting the growth of primary cladodes with sizes of 21 to 40 cm and removing those smaller than 20 cm is recommended.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"850 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140479444","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}
Glauber Ferreira Barreto, José Maria Arcanjo Alves, Paulo Roberto Ribeiro Rocha, Thaís Santiago Castro, Deyse Cristina Oliveira da Silva, Sonicley Sonicley da Silva Maia, José de Anchieta A Alves de Albuquerque, Leandro Torres de Souza
The slow growth of the pineapple (Ananas comosus (L.) Merr.) during the vegetative phase prolongs the crop cycle, resulting in higher production costs. When used in low doses, some herbicides can stimulate plant growth, a phenomenon known as hormesis. The aim of this study was to determine the effects of sub-doses of glyphosate and 2,4-dichlorophenoxyacetic acid (2,4-D) on growth in the Pérola cultivar of the pineapple. The treatments under study consisted of glyphosate applications of 0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360 and 720 g a.e. ha-1, and 2,4-D applications of 0, 1.68, 3.35, 6.70, 16.75, 33.5, 67, 167.5, 335 and 670 g a.e. ha-1. The experiments were completely randomised with four replications. The plants were grown in the greenhouse in pots with a capacity of 8 dm3 substrate. Growth variables were evaluated in the plants, together with the total and partitioned accumulated biomass (leaf, stem and root). The data were submitted to analysis of variance and regression. The pineapple showed greater phytotoxicity from the glyphosate herbicide at applications ranging from 18 to 720 g a.e. ha-1 and from 2,4-D in the range of 167.5 to 670 g a.e. ha-1. The hormesis effect was evidenced by the 32.25% increase in root fresh weight at the dose of 1.8 g a.e. ha-1 glyphosate. However, the slow growth of the pineapple was not overcome by the hormesis effect of the herbicides.
{"title":"Do sub-doses of glyphosate and 2,4-D cause hormesis in the pineapple plants? Insights into the response of the pineapple plants to this phenomenon","authors":"Glauber Ferreira Barreto, José Maria Arcanjo Alves, Paulo Roberto Ribeiro Rocha, Thaís Santiago Castro, Deyse Cristina Oliveira da Silva, Sonicley Sonicley da Silva Maia, José de Anchieta A Alves de Albuquerque, Leandro Torres de Souza","doi":"10.14295/cs.v15.4161","DOIUrl":"https://doi.org/10.14295/cs.v15.4161","url":null,"abstract":"The slow growth of the pineapple (Ananas comosus (L.) Merr.) during the vegetative phase prolongs the crop cycle, resulting in higher production costs. When used in low doses, some herbicides can stimulate plant growth, a phenomenon known as hormesis. The aim of this study was to determine the effects of sub-doses of glyphosate and 2,4-dichlorophenoxyacetic acid (2,4-D) on growth in the Pérola cultivar of the pineapple. The treatments under study consisted of glyphosate applications of 0, 1.8, 3.6, 7.2, 18, 36, 72, 180, 360 and 720 g a.e. ha-1, and 2,4-D applications of 0, 1.68, 3.35, 6.70, 16.75, 33.5, 67, 167.5, 335 and 670 g a.e. ha-1. The experiments were completely randomised with four replications. The plants were grown in the greenhouse in pots with a capacity of 8 dm3 substrate. Growth variables were evaluated in the plants, together with the total and partitioned accumulated biomass (leaf, stem and root). The data were submitted to analysis of variance and regression. The pineapple showed greater phytotoxicity from the glyphosate herbicide at applications ranging from 18 to 720 g a.e. ha-1 and from 2,4-D in the range of 167.5 to 670 g a.e. ha-1. The hormesis effect was evidenced by the 32.25% increase in root fresh weight at the dose of 1.8 g a.e. ha-1 glyphosate. However, the slow growth of the pineapple was not overcome by the hormesis effect of the herbicides.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140470961","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}
Thamiris Ferreira Pinto Paiva, Marlos Alves Bezerra, Reivany Eduardo Morais Lima, Hernandes De Oliveira Feitosa, Gabrielen de Maria Gomes Dias
Salinity is one of the primary challenges faced by irrigated agriculture in semi-arid regions. This study aimed to investigate the effects of fertilization on the development of cashew seedlings irrigated with water of varying salinity levels. The research was conducted in a protected environment at Embrapa Agroindústria Tropical, Fortaleza, using grafted seedlings of the BRS 189 clone on CCP 06 rootstock. The treatments resulted from the combination of three levels of NPK fertilization (control - without fertilization, 50% less than conventional nutrition, and 100% of conventional nutrition used by the crop), which was incorporated into the substrate before sowing CCP 06, with four salinity levels (ECa of 0.8, 4.0, 7.0, and 10.0 dS m-1) of the irrigation water for the seedlings. Gas exchange, assimilate accumulation, growth, and nutrient content in the leaves, stems, and roots of the seedlings were evaluated 90 days after grafting. The data were subjected to analysis of variance, and when a significant effect was observed, the Tukey test was performed, while quantitative data were subjected to regression analysis. Overall, fertilization levels did not influence seedling growth. Fertilization did not interfere with photosynthate production, which performed better when the seedlings were subjected to a salinity of 7.0 dS m-1. The application of NPK to the substrate resulted in higher levels of nitrogen in the leaves, while phosphorus content decreased, and foliar potassium was not influenced by fertilization.
{"title":"Physiology and development of grafted dwarf cashew seedlings under different fertilization doses and irrigated with saline water","authors":"Thamiris Ferreira Pinto Paiva, Marlos Alves Bezerra, Reivany Eduardo Morais Lima, Hernandes De Oliveira Feitosa, Gabrielen de Maria Gomes Dias","doi":"10.14295/cs.v15.3676","DOIUrl":"https://doi.org/10.14295/cs.v15.3676","url":null,"abstract":"Salinity is one of the primary challenges faced by irrigated agriculture in semi-arid regions. This study aimed to investigate the effects of fertilization on the development of cashew seedlings irrigated with water of varying salinity levels. The research was conducted in a protected environment at Embrapa Agroindústria Tropical, Fortaleza, using grafted seedlings of the BRS 189 clone on CCP 06 rootstock. The treatments resulted from the combination of three levels of NPK fertilization (control - without fertilization, 50% less than conventional nutrition, and 100% of conventional nutrition used by the crop), which was incorporated into the substrate before sowing CCP 06, with four salinity levels (ECa of 0.8, 4.0, 7.0, and 10.0 dS m-1) of the irrigation water for the seedlings. Gas exchange, assimilate accumulation, growth, and nutrient content in the leaves, stems, and roots of the seedlings were evaluated 90 days after grafting. The data were subjected to analysis of variance, and when a significant effect was observed, the Tukey test was performed, while quantitative data were subjected to regression analysis. Overall, fertilization levels did not influence seedling growth. Fertilization did not interfere with photosynthate production, which performed better when the seedlings were subjected to a salinity of 7.0 dS m-1. The application of NPK to the substrate resulted in higher levels of nitrogen in the leaves, while phosphorus content decreased, and foliar potassium was not influenced by fertilization.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"321 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140472017","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}
Debora Sarana Ortolan Arantes, Willian Krause, Angélica Padilha de Freitas, Dayane Castro Silva, R. Dallacort, William Fenner
Natural flowering in pineapple crops can cause significant economic losses to growers, resulting in uneven fruiting, which hinders phytosanitary operations and the scaling of fruit harvest. The objective of this work was to evaluate the tolerance of eight pineapple cultivars to natural flowering induction in Tangara da Serra, Mato Grosso, Brazil. The cultivars BRS-Ajuba, BRS-Imperial, BRS-Vitoria, Gigante-de-Tarauaca, IAC-Fantastico, Jupi, Perola, and Smooth-Cayenne were evaluated. Planting was carried out in May of 2018, in a randomized block design, with five replications and 20 plants per plot. Plant height, D-leaf length, and percentage of induced plants were evaluated. The surveying period of plants naturally induced was between May and September 2019. In this period, the plants were between 12 and 16 months of age, with adequate D-leaf lengths and plant heights for the occurrence of flowering induction. There were days with night-time temperatures below 15 °C; the lowest photoperiod was in June. The cultivars Smooth-Cayenne, BRS-Imperial, and IAC-Fantastico were tolerant to the natural induction, which resulted in uneven fruiting, causing losses to growers.
{"title":"Tolerance of pineapple cultivars to natural flowering induction in the state of Mato Grosso","authors":"Debora Sarana Ortolan Arantes, Willian Krause, Angélica Padilha de Freitas, Dayane Castro Silva, R. Dallacort, William Fenner","doi":"10.14295/cs.v15.4108","DOIUrl":"https://doi.org/10.14295/cs.v15.4108","url":null,"abstract":"Natural flowering in pineapple crops can cause significant economic losses to growers, resulting in uneven fruiting, which hinders phytosanitary operations and the scaling of fruit harvest. The objective of this work was to evaluate the tolerance of eight pineapple cultivars to natural flowering induction in Tangara da Serra, Mato Grosso, Brazil. The cultivars BRS-Ajuba, BRS-Imperial, BRS-Vitoria, Gigante-de-Tarauaca, IAC-Fantastico, Jupi, Perola, and Smooth-Cayenne were evaluated. Planting was carried out in May of 2018, in a randomized block design, with five replications and 20 plants per plot. Plant height, D-leaf length, and percentage of induced plants were evaluated. The surveying period of plants naturally induced was between May and September 2019. In this period, the plants were between 12 and 16 months of age, with adequate D-leaf lengths and plant heights for the occurrence of flowering induction. There were days with night-time temperatures below 15 °C; the lowest photoperiod was in June. The cultivars Smooth-Cayenne, BRS-Imperial, and IAC-Fantastico were tolerant to the natural induction, which resulted in uneven fruiting, causing losses to growers.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"271 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140477621","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}
R. C. Oliveira, Hugo Franco de Novaes Rosa, S. Silva, Angélica Araújo Queiroz, José Magno Queiroz Luz
Onions has high nutritional and nutraceutical value. In the last decade the bulbs have gained increasingrelevance due their compounds linked to anti-cancer effects. The fertilization managment is relevant to thiscrop because the mineral’s influence beyond productivity, interfering in several aspects of quality. Organicsources despite available, adoption is still cautious and seen as an expense, rather than investment in soilquality. Therefore, the objective was to evaluate the use of organomineral fertilizer on the development andproductivity of Akamaru hybrid. The experiment was carried out in Cristalina-GO, in a randomized block design,with 4 replications and 5 treatments: organomineral fertilizer (NPK) with the formula 02-20-05. The rates wereadjusted to approximately the same amounts, where 3,680 kg ha-1 was considered the 100% rate, 2,944 kg ha-1as 80%, 2,208 kg ha-1 as 60% and 1,472 kg ha-1 as 40% of the rate established. The rate of 2,300 kg ha-1 of theformulated 03-35-06 referred to 100% of the mineral source. The total yield of onion was not affected when theorganomineral source was used, therefore, it is a viable source for use in onion culture. A rate reduction of upto 20% of the recommended mineral rate allows good performance (85.5 t ha-1), with 7.5 t ha-1 higher than the60% reduction of the recommended rate.
{"title":"Agronomic efficiency of organomineral fertilizer in onion cultivation","authors":"R. C. Oliveira, Hugo Franco de Novaes Rosa, S. Silva, Angélica Araújo Queiroz, José Magno Queiroz Luz","doi":"10.14295/cs.v15.4132","DOIUrl":"https://doi.org/10.14295/cs.v15.4132","url":null,"abstract":"Onions has high nutritional and nutraceutical value. In the last decade the bulbs have gained increasingrelevance due their compounds linked to anti-cancer effects. The fertilization managment is relevant to thiscrop because the mineral’s influence beyond productivity, interfering in several aspects of quality. Organicsources despite available, adoption is still cautious and seen as an expense, rather than investment in soilquality. Therefore, the objective was to evaluate the use of organomineral fertilizer on the development andproductivity of Akamaru hybrid. The experiment was carried out in Cristalina-GO, in a randomized block design,with 4 replications and 5 treatments: organomineral fertilizer (NPK) with the formula 02-20-05. The rates wereadjusted to approximately the same amounts, where 3,680 kg ha-1 was considered the 100% rate, 2,944 kg ha-1as 80%, 2,208 kg ha-1 as 60% and 1,472 kg ha-1 as 40% of the rate established. The rate of 2,300 kg ha-1 of theformulated 03-35-06 referred to 100% of the mineral source. The total yield of onion was not affected when theorganomineral source was used, therefore, it is a viable source for use in onion culture. A rate reduction of upto 20% of the recommended mineral rate allows good performance (85.5 t ha-1), with 7.5 t ha-1 higher than the60% reduction of the recommended rate.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"38 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139203395","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}
Thatiane Nepomuceno Alves, A. I. I. Cardoso, Nicholas Taborda Nordi, Joseantonio Ribeiro de Carvalho, Marcelo Munhoz Venâncio de Oliveira, Débora Cristina Mastroleo Luís, Renan Lima de Sousa
Due to the lack of specific fertilization recommendations for jambu cultivation, producers commonly usefertilizers recommended for other vegetables. This study aimed to evaluate the effect of different doses oforganic fertilizers, namely hoof and horn powder and castor bean cake, on jambu plant production under anorganic system. The experiments were conducted at the Experimental Farm of São Manuel, SP, belonging to theSchool of Agriculture (FCA) – UNESP, and at the “Estância Três Nascentes” site, located in Botucatu, SP, Brazil.Twelve treatments were evaluated, in a 2 x 6 factorial design, consisting of two organic fertilizers (castor beancake (CBC) and hoof and horn powder (HHP)) x 6 top dressing N doses (50, 75, 100, 125, 150, and 0 (controlwithout these fertilizers)). The experimental design was a randomized block with four replications. Plant height(PH), number of inflorescences (NI), the fresh weight of inflorescence (FWI), the fresh weight of vegetative parts(FWVP), and the total fresh weight (TFW) were evaluated at each location. Linear increases were observed in allcharacteristics in both locations as the fertilizer doses increased. Comparing the highest dose (150 kg ha-1 of N)with the control, increases of 109%, 251%, 218%, 283%, and 227% were obtained at the farm in São Manuel, and69%, 79%, 111%, 276%, and 118% in Botucatu, for PH, NI, FWVP, FWI, and TFW, respectively. When comparing thetwo fertilizers, HHP presented better results than CBC for most characteristics in both areas.
{"title":"Organic fertilizer doses for top-dressing fertilization in jambu (Acmella oleracea [(L.) R. K. Jansen]) production","authors":"Thatiane Nepomuceno Alves, A. I. I. Cardoso, Nicholas Taborda Nordi, Joseantonio Ribeiro de Carvalho, Marcelo Munhoz Venâncio de Oliveira, Débora Cristina Mastroleo Luís, Renan Lima de Sousa","doi":"10.14295/cs.v15.4070","DOIUrl":"https://doi.org/10.14295/cs.v15.4070","url":null,"abstract":"Due to the lack of specific fertilization recommendations for jambu cultivation, producers commonly usefertilizers recommended for other vegetables. This study aimed to evaluate the effect of different doses oforganic fertilizers, namely hoof and horn powder and castor bean cake, on jambu plant production under anorganic system. The experiments were conducted at the Experimental Farm of São Manuel, SP, belonging to theSchool of Agriculture (FCA) – UNESP, and at the “Estância Três Nascentes” site, located in Botucatu, SP, Brazil.Twelve treatments were evaluated, in a 2 x 6 factorial design, consisting of two organic fertilizers (castor beancake (CBC) and hoof and horn powder (HHP)) x 6 top dressing N doses (50, 75, 100, 125, 150, and 0 (controlwithout these fertilizers)). The experimental design was a randomized block with four replications. Plant height(PH), number of inflorescences (NI), the fresh weight of inflorescence (FWI), the fresh weight of vegetative parts(FWVP), and the total fresh weight (TFW) were evaluated at each location. Linear increases were observed in allcharacteristics in both locations as the fertilizer doses increased. Comparing the highest dose (150 kg ha-1 of N)with the control, increases of 109%, 251%, 218%, 283%, and 227% were obtained at the farm in São Manuel, and69%, 79%, 111%, 276%, and 118% in Botucatu, for PH, NI, FWVP, FWI, and TFW, respectively. When comparing thetwo fertilizers, HHP presented better results than CBC for most characteristics in both areas.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201243","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}
A. B. D. S. Bronze, Sinara de Nazaré Santana Brito, Harleson Sidney Almeida Monteiro, Ewerton Delgado Sena, Nayara Ferreira Barros Da Silva, Valdeci Junior Fonseca Pinheiro, Layse Barreto de Almeida Abreu, Rhuan Carlos Nascimento Dias
Amazon is the largest tropical forest on the planet, it has a variety of plant species with emphasis on manyfruit trees, such as the camu-camuzeiro (Myrciaria dubia (H. B. K.) McVaugh), which occurs naturally on thebanks of rivers, lakes, lowlands and flooded forest of the Amazon. The objective of this study is to evaluate thedevelopment of camu-camuzeiro seedlings in different organic substrates. The experiment was conductedin the seedling production nursery of the Federal Rural University of Amazon. The experimental design wasentirely randomized, with ten treatments and five repetitions, each portion was represented by ten plants,totaling 500 seedlings. The substrates evaluated were: T1 - Humus; T2 - Humus + Bird manure; T3 - Humus + Bovinemanure; T4 - Humus + Açaí kernel; T5 - Humus + Chestnut shell; T6 - Humus + Chestnut shell + Poultry manure;T7 - Humus + Bovine manure + Chestnut shell; T8 - Humus + Açaí kernel + Poultry manure; T9 - Humus + Açaíkernel + Bovine manure; T10 - Commercial. The different substrates used influenced the development of camucamuzeiroseedlings evaluated at 180 days. The treatments with a substrate based on Humus (T1), Humus + Açaíkernel (T4), Humus + Chestnut shell (T5), Humus + Chestnut shell + Poultry manure (T6), Humus + Bovine manure +Chestnut shell (T7), Humus + Açaí Kernel + Bovine manure (T9) and the commercial substrate (T10) are the bestfor a satisfactory development of this crop in the production field.
{"title":"Organic substrates in the development of camu-camuzeiro (Myrciaria dubia (H. B. K.) McVaugh) in the amazon region","authors":"A. B. D. S. Bronze, Sinara de Nazaré Santana Brito, Harleson Sidney Almeida Monteiro, Ewerton Delgado Sena, Nayara Ferreira Barros Da Silva, Valdeci Junior Fonseca Pinheiro, Layse Barreto de Almeida Abreu, Rhuan Carlos Nascimento Dias","doi":"10.14295/cs.v15.4213","DOIUrl":"https://doi.org/10.14295/cs.v15.4213","url":null,"abstract":"Amazon is the largest tropical forest on the planet, it has a variety of plant species with emphasis on manyfruit trees, such as the camu-camuzeiro (Myrciaria dubia (H. B. K.) McVaugh), which occurs naturally on thebanks of rivers, lakes, lowlands and flooded forest of the Amazon. The objective of this study is to evaluate thedevelopment of camu-camuzeiro seedlings in different organic substrates. The experiment was conductedin the seedling production nursery of the Federal Rural University of Amazon. The experimental design wasentirely randomized, with ten treatments and five repetitions, each portion was represented by ten plants,totaling 500 seedlings. The substrates evaluated were: T1 - Humus; T2 - Humus + Bird manure; T3 - Humus + Bovinemanure; T4 - Humus + Açaí kernel; T5 - Humus + Chestnut shell; T6 - Humus + Chestnut shell + Poultry manure;T7 - Humus + Bovine manure + Chestnut shell; T8 - Humus + Açaí kernel + Poultry manure; T9 - Humus + Açaíkernel + Bovine manure; T10 - Commercial. The different substrates used influenced the development of camucamuzeiroseedlings evaluated at 180 days. The treatments with a substrate based on Humus (T1), Humus + Açaíkernel (T4), Humus + Chestnut shell (T5), Humus + Chestnut shell + Poultry manure (T6), Humus + Bovine manure +Chestnut shell (T7), Humus + Açaí Kernel + Bovine manure (T9) and the commercial substrate (T10) are the bestfor a satisfactory development of this crop in the production field.","PeriodicalId":38570,"journal":{"name":"Comunicata Scientiae","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201254","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}
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