ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)最新文献

{"title":"Phenotypic diversity of the tidal swamp rice (Oryza sativa L.) germplasm from South Kalimantan, Indonesia","authors":"D. H. Mursyidin, Purnomo, I. Sumardi, B. Daryono","doi":"10.21475/AJCS.19.13.03.P1268","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P1268","url":null,"abstract":"Tidal swamp rice is a valuable source for developing new rice cultivars in the future because they possess some important traits for, adapted to a wide range of abiotic and biotic stresses. In this study, twenty-seven cultivars of the tidal swamp rice, comprising 26 from the South Kalimantan and one of Sumatera Island, Indonesia (an outgroup), were characterized phenotypically. Following Biodiversity International procedure, 14 qualitative and 15 quantitative traits were observed. The results show that this germplasm has a unique diversity in phenotypic traits. The secondary branch of panicle was the highest diversity of qualitative traits with an index of 0.93. Similarly, the plant height was the highest for quantitative traits (0.70). The correlation analysis confirmed that plant height, strongly correlated to culm diameter, the number of tillers and grain ratio. The PCA indicated that several independent traits, such as coleoptile anthocyanin coloration, basal leaf sheath color, and grain length, have positively contributed to the diversity, accounting 62.99%. Based on PCA analysis, the tidal swamp rice were clustered into four groups. According to UPGMA, this germplasm separated into six main groups, where Sardani (an outgroup) was very closely related to Lakatan Pacar and most distantly to Siam Perak. This information would be useful for the future rice breeding program, particularly in developing new rice cultivars in the tidal swamp areas.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84182404","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}

{"title":"Physiological and agronomic behavior of commercial cultivars of oil palm (Elaeis guineensis) and OxG hybrids (Elaeis oleifera x Elaeis guineensis) at rainy and dry seasons","authors":"Cristihian Jarri Bayona-Rodríguez, H. Romero","doi":"10.21475/AJCS.19.13.03.P1354","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P1354","url":null,"abstract":"Oil palm is the most productive and efficient oilseed crop in the world. Oil palm is planted in various geographical areas, where the frequency of extreme weather events is expected to increase because of climate change. The characterization of the response of oil palm cultivars to climatic conditions will allow identifying sources of tolerance to different types of stress caused by climate change, leading to the determination of the best genotype x environment relationships. The physiological responses, oil quality and yield of 11, six-year-old commercial oil palm cultivars with different origins were evaluated in two periods of contrasting climate conditions (rainy and dry seasons between the years 2008 and 2010). We found that the first impact of a period with water deficit was the reduction on gas exchange of all cultivars. Photosynthesis fell between 25% to 40% and transpiration decreased between 10% and 50%. During the dry season, leaf sugar concentration increased respect to the rainy season between 14% to 114%, and certain cultivars showed up to 27% higher photosynthetic water use efficiency. This variation could be due to the genetics of different cultivars. No significant differences were observed between the seasons in terms of oil quality. In general, changes in oil palm physiology observed in response to water deficit were related to the ability of the palm to adapt and survive periods of drought stress. The cultivars evaluated showed a good response to dry periods, with the IRHO being the most outstanding at each evaluated season .","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82510414","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}

{"title":"Biochemical metabolism of two cultivars of cowpea treated with 24-Epibrassinolide and subjected to saline stress","authors":"Kerolém Prícila Sousa Cardoso, S. S. Conceição, A. E. A. Brito, J. T. Martins, Liliane Corrêa Machado, Thays Correa Costa, G. Nogueira, V. Nascimento, Rafael Silva, R. C. Paiva, A. V. C. Barbosa, R. Okumura, C. F. Neto","doi":"10.21475/AJCS.19.13.03.P1390","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P1390","url":null,"abstract":"We aimed to evaluate the changes in biochemical metabolism generated by salt stress and to investigate the effect of brassinosteroids in mitigating of this stress on two cultivars of Vigna unguiculata L. We used a completely randomized experimental design in a 2 x 3 x 3 factorial scheme, using two cultivars of cowpea (BRS Guariba and BR3 Tracuateua - moderately tolerant and sensitive to salinity, respectively), three concentrations of brassinosteroids (0, 0.2 and 0.4 μM Br) and three concentrations of NaCl (0 , 50 and 100 mM NaCl), with four replicates. The following evaluations were carried out: relative water content, electrolyte leakage, nitrate levels, nitrate reductase activity, free ammonium, total soluble amino acids, soluble proteins, glycine betaine and proline. The results showed that salinity at 100 mM affected the nitrate reductase enzyme activity, the relative water content, total soluble amino acids and soluble proteins for cultivars BR3 Tracuateua, and BRS Guariba, but the 24-epibrassinolid attenuated the effects of salinity for these variables. The concentration of 0.2 μM of Br increased 55% and 20% in proline and glycine betaine contents, respectively, in both of cultivars. The plants under stress saline and 0.2 mM of 24-epibrassinolid, presented 42% and 58% reductions in electrolyte leakage of BR3 Tracuateua and BRS Guariba cultivars, respectively. The concentrations of ammonium were slightly varied. Therefore, the application of 0.2 μM of 24-epibrassinolid caused a greater acclimatization of the cultivars, being the BR3 Tracuateua (sensitive to salt) cultivar more expressive in most treatments.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83703391","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}

{"title":"Production of tomato seedlings Santa Cruz cv. Kadain using different substrates","authors":"V. J. Szareski, G. Meneghello, I. Carvalho, G. H. Demari, S. Dellagostin, T. Rosa, J. R. Pimentel, Í. Dubal, F. Koch, Cristian Troyjack, Mayara Torres Mendonça, L. Tunes","doi":"10.21475/AJCS.19.13.03.P916","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P916","url":null,"abstract":"The tomato crop is considered of great socio-economic importance in the world, feeding millions of people daily. This crop is considered strategic because its production is diverse in the world, being produced by large agro-industries, moving a rich productive chain. This work aimed to evaluate the production of tomato seedlings as function of different substrates, and to comprehend the interrelation of characteristics through linear associations. The experimental design was randomized blocks, using one tomato cultivar, Santa Cruz Kada, in 32 repetitions for each treatment. The treatments consisted of several substrates such as carbonized rice husk, grape husk (S10), coconut fiber, and commercial substrate (Bioplant®). The experiment was carried out in a greenhouse using pots. The characters measured 25 days after sowing were: stem diameter, number of leaves, shoot length, root length, green mass of root, green mass of shoot, dry mass of shoot, and dry mass of root. The analysis of variance was performed and the characters that presented significance were compared by the Duncan test at 5% of probability. Subsequently, Pearson’s linear correlation was individually performed for each substrate. The results showed that commercial (Bioplant®) and grape skin substrates were the most suitable for production of tomato seedlings cv. Santa Cruz Kada. The characters of stem diameter, number of leaves, shoot length, green mass of root and green mass of shoot revealed significant correlations; however they differently behaved in the substrates.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86180394","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}

{"title":"The morphological, physiological and biochemical responses of sweet corn to foliar application of amino acids biostimulants sprayed at three growth stages","authors":"M. Tadros, Hussam J Omari, M. Turk","doi":"10.21475/AJCS.19.13.03.P1335","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P1335","url":null,"abstract":"Corn (Zea mays L.) is one of the most important cereal crops in many countries due to its high nutritive value and a raw material for many industrial products. This research was conducted to determine the optimum concentration of the foliar application of amino acids biostimulants at appropriate growth stage for achieving more efficient use of the foliar application on sweet corn (Zea mays saccharata) var. merkur. The foliar application used in this study was the commercial product (PerfectoseTM, liquid) which is a well known product and commonly used for different crops in Jordan. The experiment was conducted at the greenhouse during the summer of 2015. Corn plants were sprayed with four different concentrations: 1, 2, 3 and 4ml/L at three different growth stages: 7th leaf, tasseling and milk stage, while the control plants were sprayed with distilled water only. The morphological characteristics (plant height, root length and ear length), physiological characteristics (leaf relative water content and leaf water potential), and biochemical characteristics (chlorophyll content, nitrogen, phosphorus, potassium and protein content) were recorded during the experiment. The results indicated that the corn plant height, leaf water potential, chlorophyll content, nitrogen, phosphorus, potassium and protein content were significantly affected by the foliar application treatments, while the rest of the parameters studied were not significant. The treatments 4ml/L at milk stage and 1ml/L and 2ml/L at 7th leaf stage were most effective in the majority of parameters studied. It can be concluded that using foliar application of amino acids biostimulants could positively enhance sweet corn morphological, physiological and biochemical characteristics.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90271437","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}

{"title":"Soil coverage, phytomass production and nutrient accumulation at intercropping maize and legumes system","authors":"A. Nolla, Ivo Jucksh, J. H. Castaldo, R. C. Alvarenga, L. M. D. Costa, Carla Raquel da Silva Damy, L. V. M. Neto","doi":"10.21475/AJCS.19.13.03.P633","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P633","url":null,"abstract":"Intercropping of maize and legume cover crop is currently usual at low technological areas, due to some high benefits and potential such as suppressing weeds, recycling nutrients and coverage of the soil. Suppression of weed is important due to its huge competitory impact on the commercial crops. The nutrient recycling is also important becuase it reduces usage of fertilizers on low technological agriculture. The soil coverage is important to prevent the erosion and reduce the nutrient leaching. All those positive effects can be influenced by type of cultivated species on the intercropping consortium. This study aimed to evaluate the soil coverage, phytomass production and accumulation of nutrients by plants in a maize and legume intercropping system. The experiment consisted of rustic maize “Caiano de Sobrália” variety, intercropped with Brazilian velvet bean, black mucuna, lablab-bean and pigeon pea, whereas a control treatment (sole maize culture) was also added. First, the maize was sown on the experiment. 64 days after emergence (DAE) the legumes were sown. The soil cover rates were evaluated at 0, 64, 84, 120, and 144 DAE. The corn grains were harvested at 120 DAE to obtain the corn grain yield. The remaining portion of maize and entire legume plants were sampled at 144 DAE, when the accumulation of dry mass and nutrient were measured. The intercropping system did not affect the corn grain yield and the soil cover rate provided by maize plants. The black mucuna had the greatest weeds suppression and nutrient accumulation among the legumes cover crops evaluated.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89805166","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}

{"title":"Sowing periods, agronomic performance and seed quality of soybean cultivars in the Planosol soil","authors":"G. Aisenberg, F. Koch, G. Zimmer, G. H. Demari, V. J. Szareski, I. Carvalho, M. Monteiro, J. R. Pimentel, V. Q. Souza, F. A. Villela, T. Pedó","doi":"10.21475/AJCS.19.13.03.P994","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P994","url":null,"abstract":"Understanding of sowing in an ideal season for each region and cultivar is essential for the crop to reach each of its stages in more favorable climatic conditions. The objective of this study was to evaluate the influence of different sowing times on agronomic attributes of two soybean cultivars and the physiological quality of soybean seeds in soil type Eutrophic Haplic Planosol. The experimental design was completely randomized, in a factorial scheme 4 x 2, with four sowing times and two soybean cultivars, with eight replications. The sowing was executed at the beginning and end of November (1st and 2nd epochs) and beginning and end of January (3rd and 4th epochs), using the cultivars: Fundacep 64 RR and BMX Potência RR. The experiment was carried out in polyethylene vessels with volumetric capacity of 10 liters. The morphological attributes of the plants were evaluated, such as: height, stem diameter, number of pods and seeds per plant, 1000 seed weight, as well as seed germination and vigor. Seeding after January 1st negatively affected the agronomic behavior of soybean plants, with reduction of plant height, stem diameter, number of pods and seeds per plant. The sowing on November 1st favored the obtaining of seeds with lower physical quality in terms of 1000 seed weight; however, seeds with superior physiological performance. Late sowing showed an alternative for the production of soybean seeds in the South region of Rio Grande do Sul, mainly due to the higher quality of the seeds produced in this period.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86072493","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}

{"title":"Quality of dried banana produced from three cultivars 'Prata-Anã', 'FHIA-18'and 'BRS Platina' under different irrigation levels","authors":"Maristella Martineli, Klenede Pereira, J. R. Santos, A. Castricini, P. D. Oliveira, C. A. Maranhão, V. Maia, Luciana Albuquerque Caldeira Rocha","doi":"10.21475/AJCS.19.13.03.P986","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P986","url":null,"abstract":"This study aimed to evaluate the influence of different levels of irrigation on the quality parameters involved in the dried-bananas production from 3 different cultivars. The experimental design was a completely randomized factorial 3 x 3, with three genotypes of bananas (Prata-Anã, FHIA-18 and BRS Platina) produced in the semi-arid region of Minas Gerais.) and three irrigation levels (50, 75 and 100% of crop evapotranspiration - ETC), with three replications. For the processing purpose, the fruits were selected at the maturity stage 6. Then they sanitized in hypochlorite of sodium solution at 100 mg L-1, peeled and dehydrated through the drying convective method with hot air, in dryer with forced air, in dryer with forced air circulation at 65ºC for 24 hours. The dried bananas were evaluated according to the following physical and chemical aspects: moisture, length, diameter, firmness, color (brightness, chroma and ºHue), soluble solids and titratable acidity, and sensory characteristics: purchase intention and acceptance. The humidity, length, diameter, firmness, color and acidity of dried bananas were influenced by the different studied irrigation levels. In the sensory evaluation, the best result regarding appearance, color, texture and flavor requirements was observed in banana processed from 'Prata-Anã' irrigated with the total level of water (100%). The dried banana processed from 'BRS Platina' was the least accepted in the sensory tests.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89740235","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}

{"title":"Emergence and vegetative development of melon in function of the soil salinity","authors":"D. T. Pinheiro, F. T. Delazari, C. Nick, E. M. Mattiello, D. Dias","doi":"10.21475/AJCS.19.13.03.P1551","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P1551","url":null,"abstract":"Soil salinity is one of the main factors limiting the development and global agricultural productivity. Melon (Cucumis melo L.) is mainly produced in arid and semi-arid regions around the world, favoring the accumulation of soluble salts in the soil. Therefore, this study aimed to evaluate the emergence and vegetative development of melon genotype under different levels of soil salinity. The assessments were performed based on the exchangeable sodium percentage (ESP) at 0, 20, 25, 30 and 35%. The emergence was affected around 30 percentage points, by comparing the control and the highest dose (35%). The emergence speed and the emergence speed index parameters were also affected in a similar way, as well as the length and dry matter of the shoot. The growth of the plants was also affected by the saline stress, being superior in the control (0%) in relation to the treatments with NaCl. The leaf area increased between weeks 4 and 7 after the planting and was slightly superior in the control in relation to the plants submitted to saline stress (20, 25, 30 and 35% of exchangeable sodium). The melon is more sensible to the saline stress in the seedling emergence than in the vegetative development over time. The development of melon seedlings is mainly affected in exchangeable sodium values superior to 20%. The analyzed hybrid is sensible to the saline stress even in 20% of exchangeable sodium.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85681043","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}

{"title":"Agro-biological and economic efficiency in a beetroot (Beta vulgaris L.) production system fertilized with hairy woodrose (Merremia aegyptia (L.) Urb.) as green manure","authors":"I. N. Silva, F. B. Neto, A. P. B. Júnior, J. D. Lima, A. P. Chaves, R. L. C. Nunes, H. Lins, J. R. T. D. Albuquerque","doi":"10.21475/AJCS.19.13.03.P1297","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.03.P1297","url":null,"abstract":"Beetroot (Beta vulgaris L.) is a tuberous vegetable that is under experimentation in the vegetable production system in Rio Grande do Norte state (Brazil). It is quite demanding, in nutritional terms. One of the alternatives to meet this need is green manuring using spontaneous species of the Caatinga biome. The aim of the present work was to optimize the agro-biological performance and economic profitability of the beetroot 'Early Wonder', fertilized with different doses of hairy woodrose (Merremia aegyptia (L.) Urb.) in this semi-arid environment. Hairy woodrose is a spontaneous species of the Caatinga biome that is widely distributed, being found in forests, fences, forest clearings and fields, growing in soils of different textures, producing biomass with a high content of macronutrients. This material was collected from spontaneous vegetation, native to the region, and used as green manure.The experimental design was a randomized complete block, with four treatments and five replicates. The treatments consisted of four amounts of hairy woodrose biomass incorporated into the soil (10, 25, 40 and 55 t ha-1 of dry matter). The following agronomic characteristics were evaluated in each beetroot treatment: plant height, fresh mass of shoots, number of leaves per plant, dry mass of shoots and dry mass of roots, total and commercial root productivity, and root productivity classified into scrap and extra roots, extra A roots, extra AA and great roots. Apart from these characteristics, the following economic indicators were also determined for each treatment: gross income, net income, rate of return and profit margin. The maximum agro-biological efficiency of beet root productivity (22.68 t ha-1) was obtained from 44.92 t ha-1 of hairy woodrose biomass added to the soil. The maximum economic efficiency of the yield of beet roots was achieved as a net income of AU$2,491.00 (R$6,406.36) ha-1, provided by the production of 22.04 t ha-1 of commercial roots, using 37.03 t ha-1 of hairy woodrose biomass incorporated into the soil. The use of hairy woodrose as green manure presents agro-economic feasibility in beet cultivation in this semi-arid environment.","PeriodicalId":93772,"journal":{"name":"ISOEN 2019 : 18th International Symposium on Olfaction and Electronic Nose : 2019 symposium proceedings : ACROS Fukuoka, May 26-29, 2019. International Symposium on Olfaction and the Electronic Nose (18th : 2019 : Fukuoka-shi, Japan)","volume":"171 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74847356","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}