scholarly journals Desempenho agronômico de mandioca de mesa manejada com irrigação e uso de cobertura plástica do solo

2020 ◽  
Vol 16 (6) ◽  
pp. 47-55
Author(s):  
Jorge Cesar dos Anjos Antonini ◽  
Eduardo Alano Vieira ◽  
Josefino de Freitas Fialho ◽  
Fernando Antônio Macena ◽  
Krishna Naudin ◽  
...  
Keyword(s):  
Soil Cover ◽  
Agronomic Performance ◽  
Root Yield ◽  
Cassava Root ◽  
Crop Development ◽  
Effective Depth ◽  
Shoot Weight ◽  
Individual Use ◽  
The Individual ◽  
Sweet Cassava

Although cassava is recognized for its high tolerance to drought, irrigation is showing satisfactory results. However, few studies have been carried out to determine the effects of soil cover, irrigation and the combination of both on crop development. Theobjective of this study was to determine the influence of irrigation and plastic soil cover on the agronomic performance of sweet cassava. The planting was done in beds, in thedouble row system with the stem cutingsimplanted vertically, with 0.60m between rows and 0.80 m between plants. The following treatments were applied: naked non-irrigated bedding, bedding covered with non-irrigated black polyethylene plastic, naked bedding with irrigation and bedding covered with irrigated black polyethylene plastic. Irrigation wasperformedby conventional sprinkling, based on the daily soil water balance at the effective depth of the cassava root system in the different stages of crop development. The characters evaluated were: shoot weight, root yield, starch percentage in the roots and time for cooking. The expression of the characters shoot weight, root yield and starch percentage in the roots wassignificantly influenced by irrigation managementandsoil cover. The individual use of irrigation and plastic soilcover technologies led to increases in root yieldof 55% and 13%, respectively, and when used together, root yieldincreased by 89%.

scholarly journals Agronomic and biochemical evaluation of cassava clones with roots that have pink pulp

2020 ◽  
Vol 50 (1) ◽  
Author(s):  
Elisiane Fuhrmann ◽  
Eduardo Alano Vieira ◽  
Josefino de Freitas Fialho ◽  
Fábio Gelape Faleiro ◽  
Juaci Vitoria Malaquias ◽  
...  
Keyword(s):  
Block Design ◽  
Carotenoid Content ◽  
Root Yield ◽  
Breeding Programs ◽  
Central Brazil ◽  
Total Carotenoid Content ◽  
Randomized Block Design ◽  
Biochemical Evaluation ◽  
Shoot Weight ◽  
Sweet Cassava

ABSTRACT: Sweet cassava breeding programs are focused on the development of bio fortified cultivars that combine significant amounts of carotenoids in their reserve roots with desirable agronomic. The objective of this research was to evaluate agronomic and biochemical traits in sweet cassava clones with roots that have pink pulp. The nine genotypes were evaluated in two seasons in a randomized block design with three replications. Among the evaluated clones, the following stood out: i) for the height of the first branch (390/08, 345/08 and the control IAC 576-70); ii) for plant height (390/08, 345/08 e 378/08); iii) for shoot weight without original steam cutting (390/08, 406/08, 378/08 e 341/08); iv) for the percentage of starch in roots (378/08, 413/08, 390/08 and the control IAC 576-70); and v) for the root yield (the control IAC 576-70 and 341/08, 390/08, 406/08 e 387/08). In the 2011/2012 season, all clones cooked within 30 minutes, indicating that they all have good culinary qualities. Regarding the total carotenoid content in the roots, the clones that stood out were 406/08 and 341/08. All clones evaluated had HCN content below 100 mg kg-1. Clones 341/08 and 406/08 have agronomic and biochemical potential for direct cultivation by producers in the Cerrado region of Central Brazil and / or for use as stock in sweet cassava breeding programs.

scholarly journals Desempenho agronômico de cultivares de mandioca de mesa em ambiente do cerrado

2020 ◽  
Vol 16 (3) ◽  
pp. 37-47
Author(s):  
Rogério Borges de Oliveira Paz ◽  
Claudio Hideo Martins da Costa ◽  
Eduardo Alano Vieira ◽  
Mirelle Vaz Coelho ◽  
Simério Carlos da Silva Cruz ◽  
...  
Keyword(s):  
Experimental Design ◽  
Harvest Index ◽  
Growing Season ◽  
Cooking Time ◽  
Stem Diameter ◽  
Agronomic Performance ◽  
Root Yield ◽  
Number Of Stems ◽  
Sweet Cassava ◽  
Plant Length

Sweet cassavais cultivatedthroughout Brazil, but needs to be better studied in the Cerrado region that has potential for its cultivation. The objective of this work was to evaluate the performanceof sweet cassava cultivars in Cerrado soil duringtwo growing season.The experiments were carried in 2016-2017 and 2017-2018with six cultivars, in Jataí-GO. The experimental design was factorial scheme 6 x 2,being 6cultivarsand two growing season, with three replications.The following evaluations were carried out: number of stems, stem diameter, height of the first branch, height of plants, number of roots per plant, length of roots, diameter of roots, weight of fresh roots, weight of fresh roots, weight of fresh shoots, harvest index and cooking time. The cultivar BRS 399 hadbetter root yield in the two crop years.The cultivars BRS 399, BRS 400, BRS 401 and IAC 576/70 increased the plant shoot weightfrom the first to the second growing season.The harvest index of cultivars BRS 400 and BRS 401 decreased from the first to the second growing season.It was concluded that the cultivars BRS 397, BRS 398, BRS 399 and IAC 576/70 presented the best agronomic performance in the 2016/2017 growing season, in turn, in the growing season2017/2018, the cultivars BRS 397, BRS 399 and BRS400 presented the best results. The cultivars BRS-397 and BRS-399 showed more stable agronomic behavior than the others.

scholarly journals Agronomic performance of sweet cassava cultivars

2020 ◽  
Vol 38 (4) ◽  
pp. 434-438
Author(s):  
Ricardo M de Mendonça ◽  
Eduardo A Vieira ◽  
Josefino de F Fialho ◽  
Marcos R Ribeiro ◽  
José Carlos da S Sene ◽  
...  
Keyword(s):  
Animal Feed ◽  
Block Design ◽  
Agronomic Performance ◽  
Root Yield ◽  
Randomized Block Design ◽  
Vegetable Products ◽  
Nutritional Characteristics ◽  
Short Time ◽  
Sanitary Conditions ◽  
Sweet Cassava

ABSTRACT Brazilian sweet cassava consumers are becoming more and more demanding in relation to sanitary conditions, organoleptic and nutritional characteristics of this vegetable products and their derivatives. Thus, more nutritious, early, productive, adapted to mechanized planting and good culinary quality sweet cassava cultivars were developed. This study aimed, therefore, to evaluate the performance of four sweet cassava cultivars in Uberaba, in Triângulo Mineiro region. The experiments were carried out in the experimental field of Faculdades Associadas de Uberaba (FAZU) during two harvest seasons. We adopted a randomized block design with three replicates, each plot consisting of four lines with ten plants. Trait averages were grouped by the Scott & Knott test. The results showed that cultivars BRS 399, BRS 397 and IAC 576-70 have potential to be grown in the region, since they showed root yield higher than 32 t ha-1 and up to 30-minute cooking time. BRS 399 stood out for its performance, showing root yield of 37 t ha-1 and 48 t ha-1 in 2015/2016 and 2016/2017 harvest seasons, respectively, with short-time cooking and presenting shoot productivities which allow its use even as animal feed.

scholarly journals Effect of Harvest Time and Nitrogen Doses on Cassava Root Yield and Quality

2017 ◽  
Vol 41 (0) ◽  
Author(s):  
Natália Trajano de Oliveira ◽  
Sandra Catia Pereira Uchôa ◽  
José Maria Arcanjo Alves ◽  
José de Anchieta Alves de Albuquerque ◽  
Guilherme Silva Rodrigues
Keyword(s):  
Harvest Time ◽  
Root Yield ◽  
Yield And Quality ◽  
Cassava Root

scholarly journals Rapid Production of a Novel Al(III) Dependent Bioflocculant Isolated From Raoultella ornithinolytica 160-1 and Its Application Combined With Inorganic Salts

2021 ◽  
Vol 11 ◽  
Author(s):  
Rui Ding ◽  
Laipeng Luo ◽  
Ruixiang Han ◽  
Meiling Zhang ◽  
Tingting Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Zeta Potentials ◽  
Ph Tolerance ◽  
Flocculation Activity ◽  
Great Performance ◽  
Wide Range ◽  
Rapid Production ◽  
Potential Applications ◽  
Individual Use ◽  
The Individual

An efficient bioflocculant-producing strain, Raoultella ornithinolytica 160-1, was identified by 16S rRNA and mass spectrometry analyses. Rapid production of bioflocculant EPS-160 was obtained with 10.01 g/(L⋅d) after optimized by response surface methodology. With the aid of Al(III), more than 90% flocculation activity of EPS-160 at 8 mg/L dosage was achieved in 5 min. Thus, this novel Al(III) dependent bioflocculant was used in combined with chemical coagulants AlCl3 to remove kaolin suspensions and wastewater treatment. The results indicated that the addition of EPS-160 in aggregation system not only largely improved the flocculation ability than the individual use of chemical flocculant (over 30 percent), but also overcome the decrease of flocculation activity due to the overdose of AlCl3 and maintained the optimum dosage of AlCl3 in a wide range (11–23 mg/L). The zeta potentials and EPS-160 structure indicated that both charge neutralization and bridging were the flocculation mechanism with kaolin. During the wastewater treatment, this composite flocculants consisted of EPS-160 and AlCl3 also had great performance for turbidity elimination. Moreover, with the properties of high flocculation activity, hyperthermal stability, pH tolerance and non-toxicity, EPS-160 shows great potential applications.

scholarly journals Compost and Biochar to Promote Soil Biological Activities under Sweet Potatoes Cultivation in a Subtropical Semiarid Region

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Josabeth Navarro ◽  
Jahdiel Salazar ◽  
James Jihoon Kang ◽  
Jason Parsons ◽  
Chu-Lin Cheng ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Sweet Potato ◽  
Soil Ph ◽  
Aboveground Biomass ◽  
Biological Activities ◽  
Agronomic Performance ◽  
Storage Root ◽  
Root Yield ◽  
Sweet Potatoes ◽  
Bare Fallow

South Texas is located in a subtropical semiarid climate, and due to high temperature and irregular precipitation, farmers opt to leave their fields fallow during the summer months jeopardizing overall soil health. We evaluated whether sweet potato (Ipomoea batatas) cultivation coupled with drip irrigation could restore soil biological activities compared with bare fallow. Additionally, because sweet potatoes have high demand of soil nutrients, especially potassium (K), we evaluated the nutrient supply of locally sourced soil amendments. Sweet potato was cultivated during summer 2018 in McAllen, Texas, under control (no fertilizer), NPK (synthetic fertilizer), RC (yard-waste compost), and AC (compost produced under an enhanced composting process), and biochar (gasified walnut shell at 900°C), each with three replicates. Soil amendments were applied at different amounts to result in a rate of 80 kg K ha−1. Soil biological indicators were microbial biomass phosphorous, phosphatase activity, and the rate of fluorescein diacetate hydrolysis (FDA). Available nitrogen, phosphorus, potassium, and sodium were also quantified. Aboveground biomass and storage root yield estimated sweet potato’s agronomic performance. Cultivation and irrigation stimulated soil enzyme activities and microbial biomass-phosphorous. Sweet potato yields were the highest in NPK treatment but still 2.8 times lower than variety’s potential yield. Storage root yield was inversely related to aboveground biomass, suggesting that growing conditions benefited the production of shoot versus roots. Both biochar and AC treatments stimulated FDA rates and K availability. Soil pH and sodium concentration increased in all treatments over the growing season, possibly due to river-sourced irrigation water. Together, these findings show that crop cultivation promoted soil biological activities and the maintenance of nutrient cycling, compared to bare-fallow conditions. For a better agronomic performance of sweet potato, it would be necessary to identify management practices that minimize increase in soil pH and salinity.

scholarly journals Estimation of Wastewater Discharges by Means of OpenStreetMap Data

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 628 ◽  
Author(s):  
Jannik Schilling ◽  
Jens Tränckner
Keyword(s):  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Sewage Treatment ◽  
Urban Water ◽  
Pumping Stations ◽  
Support Tools ◽  
Individual Use ◽  
The Individual ◽  
Building Level ◽  
Sewer Networks

For the optimization of sewer networks and integration of water management in urban planning, estimations of wastewater discharges at a high spatial resolution are a key boundary condition. In many cases, these data are not available or, for reasons of data protection and company secrecy, the data are not accessible for research purposes. Therefore, procedures are needed to determine the volume of wastewater with high spatial resolution, based on freely accessible data. The approach presented here uses mainly OpenStreetMap (OSM) data, combined with a dataset of the German official topographic–cartographic Information System (ATKIS), to estimate the volume of wastewater on a building level. By comparison with daily values of the dry weather inflow at pumping stations and sewage treatment plants, it is shown that the method can generate realistic results, if target inflows exceed 50 m³/d. Difficulties due to the effect of commuting and the individual use of the buildings have to be considered, as well as data-quality issues in the OSM dataset. As an application example, the generated wastewater discharges are spatially joined with land-use plans. The resulting wastewater yield factors serve as input data for decision-support tools in urban water planning or modeling tasks.

scholarly journals From self-tracking to smart urban infrastructures: towards an interdisciplinary research agenda on Big Data

2014 ◽  
Vol 12 (2) ◽  
pp. 273-286 ◽  
Author(s):  
Francisco R Klauser ◽  
Anders Albrechtslund
Keyword(s):  
Big Data ◽  
Information Technologies ◽  
Data Gathering ◽  
Future Research ◽  
Exploratory Research ◽  
Four Levels ◽  
Individual Use ◽  
The Many ◽  
The Individual ◽  
Automated Software

Recent debates on surveillance have emphasised the now myriad possibilities of automated, software-based data gathering, management and analysis. One of the many terms used to describe this phenomenon is ‘Big Data’. The field of Big Data covers a large and complex range of practices and technologies from smart borders to CCTV video analysis, and from consumer profiling to self-tracking applications. The paper’s aim is to explore the surveillance dynamics inherent in contemporary Big Data trends. To this end, the paper adopts two main perspectives concerned with two complementary expressions of Big Data: (1) the individual use of various techniques of self-surveillance and tracking and (2) the simultaneous trend to optimise urban infrastructures through smart information technologies. Drawing upon exploratory research conducted by the authors, the paper shows that both expressions of Big Data present a range of common surveillance dynamics on at least four levels: agency, temporality, spatiality and normativity. On these grounds, the paper highlights a series of important issues to explore in future research.

scholarly journals Association between antibiotic pressure and the risk of colonization/infection by multidrug-resistant Acinetobacter baumannii complex: a time series analysis

2021 ◽  
Author(s):  
María Huertas Vaquero ◽  
◽  
María Ángeles Asencio Egea ◽  
Rafael Carranza González ◽  
Antonio Padilla Serrano ◽  
...  
Keyword(s):  
Time Series ◽  
Acinetobacter Baumannii ◽  
Multidrug Resistant ◽  
Acinetobacter Baumannii Complex ◽  
Amoxicillin Clavulanate ◽  
Resistant Strains ◽  
Individual Use ◽  
The Individual ◽  
The Relationship ◽  
Control Study

Introduction. To analyze the association between antibiotic pressure and the risk of colonization/infection by Acinetobacter baumannii complex (AB), evaluating both the individual and general prescriptions of antibiotics. Methods. This is an analytical, observational, case-control study on patients admitted to an Intensive Care Unit (ICU) during an AB outbreak (14 months). A five-year time series was constructed with the monthly incidence of cases of infection/colonization with strains of AB resistant to each antibiotic administered and with the monthly consumption of these antibiotics in the ICU. Results. We identified 40 patients either infected (23) or colonized (17) by AB and 73 controls. We found an epidemic multidrug-resistant clone of AB in 75% of cases. Risk factors associated with the development of AB infection/colonization were: greater use of medical instruments, the presence of a tracheostomy, cutaneous ulcers, surgical lesions and prior antibiotic therapies. The regression analysis of individual use of antibiotics showed that prior treatment with ceftazidime, ceftriaxone, amoxicillin/clavulanate, imipenem, levofloxacin, linezolid, and vancomycin was a risk factor for acquiring AB. ARIMA models showed that the relationship were greatest and statistically significant when the treatment occurred between 6 months (ceftazidime) and 9 months (imipenem and levofloxacin) prior. Conclusions. The dynamic and aggregate relationship between the incidence of infection/colonization by multidrug-resistant strains of AB and prior antibiotic treatment was statistically significant for intervals of 6 to 9 months.

scholarly journals Authorial compatibility of words in I.A. Goncharov’s novels: comparative stylometry

2020 ◽  
Vol 26 (4) ◽  
pp. 95-100
Author(s):  
M. Yu. Mukhin ◽  
M. Yu. Mukhin
Keyword(s):  
Statistical Analysis ◽  
Russian Language ◽  
Initial Material ◽  
Context Analysis ◽  
Full List ◽  
Comparative Statistical Analysis ◽  
Individual Use ◽  
The Individual ◽  
Xix Century ◽  
Classical Prose

The following article deals with peculiarities of unique lexical compatibility in classical prose of the XIX century and contains preliminary results of the cross-disciplinary corpus research performed by group of scientists of the Ural Federal University. This project suggests creation of individual syntagmatic profiles for the famous Russian writers. With works of I.A. Goncharov as an example and compared to the texts of other authors special context surrounding for words zhizn (life) and zhit (live) is systematized. Initial material is extracted through comparative statistical analysis of bigrams lexical pairs, when used in the same phrase context. Lexems zhizn (life) and zhit (live) are one of the most frequent words in Russian language, however, each author tends to use them in his own, special context surrounding. Novels by I.A. Goncharov (A Common Story, Oblomov, The Precipice, Frigate Pallada) provide relatively more issues of authors individual lexical compatibility for these words, than texts created by others; in addition a full list of syntagmatically active words for Goncharovs texts is represented in this article. Context analysis is conducted to show, how semantic connections between words in contexts reflect conceptual characteristics of Goncharovs idiostyle. Comments on the individual use of words zhizn (life) and zhit (live) by other writers A.P. Chekhov, L.N. Tolstoy, I.S. Turgenev and F.M. Dostoevsky are given. Conclusions are drawn about perspectives of performing comparative statistical analysis of lexical syntagmatics in modern philology

Sign in / Sign up

Export Citation Format

Share Document