Semiarida最新文献_第4页

CONTRASTING LEVELS OF FRUCTOSE AND UREA ADDED TO AN ANNUAL RYEGRASS BASED DIET: EFFECTS ON MICROBIAL PROTEIN SYNTHESIS, NU TRIENT DI GESTI B ILI TY AND FERMENTAT ION PARAMETER S IN CONTI NUO US CULTURE FERMENTERS 以黑麦草为基础的日粮中添加不同水平的果糖和尿素:对连续培养发酵罐中微生物蛋白质合成、营养成分含量和发酵参数的影响

Semiarida Pub Date : 2019-10-02 DOI: 10.19137/semiarida.2019(01).33-41

M. Alende, G. Lascano, T. Jenkins, J. Andrae

{"title":"CONTRASTING LEVELS OF FRUCTOSE AND UREA ADDED TO AN ANNUAL RYEGRASS BASED DIET: EFFECTS ON MICROBIAL PROTEIN SYNTHESIS, NU TRIENT DI GESTI B ILI TY AND FERMENTAT ION PARAMETER S IN CONTI NUO US CULTURE FERMENTERS","authors":"M. Alende, G. Lascano, T. Jenkins, J. Andrae","doi":"10.19137/semiarida.2019(01).33-41","DOIUrl":"https://doi.org/10.19137/semiarida.2019(01).33-41","url":null,"abstract":"El objetivo de este experimento fue evaluar los efectos de la adicion de fructosa cristalina y urea a una dieta basada en raigras anual sobre la sintesis de proteina microbiana, la fermentacion y la digestibilidad de los nutrientes, usando fermentadores de flujo continuo. Se usaron seis fermentadores de flujo continuo en un arreglo factorial 3x2, con tres niveles de hidratos de carbono solubles (WSC) obtenidos por la adicion de fructosa cristalina (21, 24 y 27 g.100 g MS1; LWSC, MWSC y HWSC, respectivamente) y dos niveles de proteina bruta (CP) obtenidos por la adicion de urea (14,6 y 18,6 g.100 g MS1, LCP y HCP, respectivamente). Se corrieron sucesivamente cuatro periodos de 10d (7d para adaptacion, 3d para muestreo). La sintesis de proteina microbiana se estimo por la relacion purinas: N. Hubo una interaccion significativa entre niveles de WSC y CP para sintesis de proteina microbiana (P<0,001). El nivel de WSC no afecto el pH, la concentracion de amonio ni la concentracion de acidos grasos volatiles (VFA). Niveles mas altos de CP aumentaron la proporcion de acido acetico y tendieron a aumentar la relacion acetico propionico, mientras que el nivel de WSC no afecto las proporciones de VFA. Los tratamientos no afectaron la digestibilidad de los nutrientes. Concluimos que la adicion de fructosa cristalina a dietas basadas en raigras anual aumento la sintesis de proteina microbiana a los niveles mas altos de CP en la dieta.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82716010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

BIOETHANOL PRODUCTION FROM GRAIN SORGHUM (Sorghum bicolor L. Moench) AT LABORATORY SCALE 实验室规模的高粱(SORGHUM bicolor L. Moench)生产生物乙醇

Semiarida Pub Date : 2019-10-01 DOI: 10.19137/semiarida.2019(01).11-17

Picca Aurora, Mirta Castaño, Julián Isasti, Maria Clementina Pereyra Cardozo, M. Fernández, Enzo Ferrari, R. Domínguez

引用次数: 0

NITROGEN FERTILIZATION STRATEGIES TO INCREASE YIELD AND PROTEIN OF WHEAT IN THE PAMPEAN SEMIARID REGION 潘潘半干旱区提高小麦产量和蛋白质的氮肥策略

Semiarida Pub Date : 2019-10-01 DOI: 10.19137/semiarida.2019(01).53-62

Alexandra Dillchneider, Ileana Frasier, D. Funaro, R. Fernández, A. Quiroga

{"title":"NITROGEN FERTILIZATION STRATEGIES TO INCREASE YIELD AND PROTEIN OF WHEAT IN THE PAMPEAN SEMIARID REGION","authors":"Alexandra Dillchneider, Ileana Frasier, D. Funaro, R. Fernández, A. Quiroga","doi":"10.19137/semiarida.2019(01).53-62","DOIUrl":"https://doi.org/10.19137/semiarida.2019(01).53-62","url":null,"abstract":"The objective of this work was to evaluate the influence of nitrogen fertilization on the expression of yield and grain protein content in wheat in different environments of the semiarid Pampa region. The field experiments were carried out in Embajador Martini, Macachín and Anguil. The treatments were: control (0N), fertilization at seeding with 40 kg N.ha (40+0) and 80 kg N.ha (80+0), delayed fertilization with 40 kg N.ha (between Z3.9 and Z5.0) (0+40) and divided fertilization (40+40). The treatments were arranged in a completely randomized block design with four replicates. Five filed experiments were carried out in each site and yield, grain protein content, water use efficiency and nitrogen use efficiency were determined. The sites with IMO> 4,5% had more response to yields in comparation with control, than the sites with IMO>4,5%. The soils with >50% A+L had grater soil potential fertility, and there were significant differences between the control and 80 kg.ha at seeding o divided fertilization. Instead, the soils with <50% A+L did not show significant differences in the yields between treatments. The lowest yields in these soils were translated in higher protein grain content, reaching 11%. More soil nitrogen content increases the grain nitrogen content but decreases nutrient use efficiency. Although, rainfalls are the main restriction of this region, with a good water availability, the wheat productivity is limited by low nitrogen content.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91230412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

THE STABILITY OF GRAIN YIELD IN WINTER CEREALS IN THE DRYSUBHUMID PAMPAS REGION 干旱半湿润潘帕斯地区冬粮产量的稳定性

Semiarida Pub Date : 2019-10-01 DOI: 10.19137/semiarida.2019(01).19-32

M. Fernández, O. Zingaretti, D. Riestra

{"title":"THE STABILITY OF GRAIN YIELD IN WINTER CEREALS IN THE DRYSUBHUMID PAMPAS REGION","authors":"M. Fernández, O. Zingaretti, D. Riestra","doi":"10.19137/semiarida.2019(01).19-32","DOIUrl":"https://doi.org/10.19137/semiarida.2019(01).19-32","url":null,"abstract":"Winter cereals are important in agrosystems of the drysubhumid Pampas region. Environmental factors such as rainfall and temperature dominant in the definition of grain yield, there is usually a great interaction with the genotype. The triticale (X Triticosecale Wittmack) and durum wheat (Triticum durum Desf.) may be alternatives to bread wheat (Triticum aestivum L.) to stabilize the grain yields of winter cereals. The study was conducted in the Faculty of Agronomy of UNLPam Experimental Field, located at 36o 46 'S and 64o 17' W, 210 m above sea level. The tests were conducted for eight years, which compared the three species, (five varieties of bread wheat, four of durum wheat and two of triticale), with two fertility conditions. The two triticale`s genotypes and bread wheat “Buck guaraní” had greater grain yield, while durum wheats showed average to low yields. The grain yield stability was not exclusive of one species, since triticale “Eronga 83”, bread wheat “ACA 601” and durum wheat “Ciccio” were stable, and bread wheat “Abate” and durum wheat “Buck cristal” were unstable. The CVi of Francis and Kannemberg and VEP of AMMI methods showed a good description of the clasification stability`s including all methods. The grain yield stability was not associated with higher yield potential.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87673156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECT OF AMENDMENT WITH COMPOST OF PEAR POMACE ON FORAGE PRODUCTION OF Setaria italica (L.) P. Beauv. 梨渣堆肥改良剂对意大利狗尾草饲料生产的影响测定。

Semiarida Pub Date : 2019-06-01 DOI: 10.19137/SEMIARIDA.2018(02).45-50

J. Maldonado, M. S. Agüero, Facundo Iturmendi, M. Buglione

引用次数: 2

EFFECT OF GRAZING TIME ON GRASLAND SEEDBANK AND Piptochaetium napostaense's STRUCTURAL PARAMETERS 放牧时间对草地种子库及毛羊藿结构参数的影响

Semiarida Pub Date : 2019-06-01 DOI: 10.19137/SEMIARIDA.2018(02).9-15

M. Martin, E. Morici, H. Petruzzi

引用次数: 1

HARMFUL AND BENEFICIAL INSECTS FOR SAFFLOWER CROP IN THE SEMIARID PAMPEAN REGION 半干旱潘潘地区红花作物的有害和有益昆虫

Semiarida Pub Date : 2019-06-01 DOI: 10.19137/SEMIARIDA.2018(02).35-44

F. Fritz, Fernando Ramonda, E. Baudino

{"title":"HARMFUL AND BENEFICIAL INSECTS FOR SAFFLOWER CROP IN THE SEMIARID PAMPEAN REGION","authors":"F. Fritz, Fernando Ramonda, E. Baudino","doi":"10.19137/SEMIARIDA.2018(02).35-44","DOIUrl":"https://doi.org/10.19137/SEMIARIDA.2018(02).35-44","url":null,"abstract":"The work`s aims were to identify both harmful and helpful insect species for safflower crop and to study their distribution along time in relation to plant phenological state. The insect species iden tified as harmful were: Uroleucon jaceae L., Capitophorus elaeagni, Frankliniella occidentalis P., Di chelops furcatus (F.), Athaumasthus haematicus (Stål), Nezara viridula (L.), Nysius simulans Stål, Edessa meditabunda (F.), Piezodorus guildinii (W.), Helicoverpa zea B., Epicauta adspersa K., Spo doptera frugiperda (J. E. Smith), Chauliognathus scriptus (Germ.), Pantomorus auripes H. and Ra chiplusia nu (G.). Regarding aphids, their highest density was observed at the beginning of November, when crop was in the state of branching, with invasion mainly of the upper third of plants: leaves, young shoots and flower heads. Among all harmful true bugs found in the crop, red bug Athaumastus haematicus (Stål) comprised the highest proportion and was detected before aphids attacks, when stem elongation of plants was just beginning. As for beneficial species, the six insects detected in sufflower crop were Hippodamia convergens G., Eriopis connexa G., Harmonia axyridis (P.), Nabis sp., Ophion sp. and Apis melifera L., besides various spider species. The coccinellids Hippodamia convergens; Eriopis connexa and Harmonia axydiris performed as the main natural control agents at crop.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"118 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79335047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

USE OF WHITE SWEET CLOVER (Melilotus albus Medik.) AS A GREEN FERTILIZER, EFFECT ON SOIL CONDITIONS AND PRODUCTIVITY OF SUBSEQUENT CULTIVATION 使用白甜三叶草(Melilotus albus Medik.)作为绿色肥料，对土壤条件和后续栽培的生产力有影响

Semiarida Pub Date : 2019-06-01 DOI: 10.19137/SEMIARIDA.2018(02).25-33

N. Juan, L. Fontana, M. A. Ruiz, F. Babinec

引用次数: 0

ACCUMULATION AND FORAGE QUALITY OF WHEATGRASS SPECIES DURING IMPLANTATION STAGE UNDER DIFFERENT SEEDING DENSITY 不同播种密度下灌浆期小麦草品种积累及饲料品质

Semiarida Pub Date : 2019-06-01 DOI: 10.19137/SEMIARIDA.2018(02).17-24

M. A. Ruiz, G. Blain, R. Ernst, José Stemphelet, N. Juan, L. Fontana

引用次数: 0

FLUORIDE IN SUPERFICIAL WATERS OF LA PAMPA PROVINCE 拉潘帕省浅水中的氟化物

Semiarida Pub Date : 2018-06-01 DOI: 10.19137/semiarida.2018(02).51-58

S. Echaniz, A. Vignatti

{"title":"FLUORIDE IN SUPERFICIAL WATERS OF LA PAMPA PROVINCE","authors":"S. Echaniz, A. Vignatti","doi":"10.19137/semiarida.2018(02).51-58","DOIUrl":"https://doi.org/10.19137/semiarida.2018(02).51-58","url":null,"abstract":"The main source of fluoride in superficial or groundwater is the solubilization of fluorinated mineral com pounds. Although it is an oligonutrient, its excess can be toxic to organisms. In La Pampa there is informa tion about its concentrations in groundwater, the main source of many cities and towns. The information referred to superficial waters is scarce, which makes it difficult to estimate their possible effects on aquatic organisms. The objective was to know the fluoride concentrations in pampean aquatic ecosystems and analyze if they are superior to the guide levels for biota protection. Samples were taken between 2002 and 2017 in 27 aquatic ecosystems. Flouride determinations were made with the SPANDS colorimetric method. Concentrations varied between 0.2 and 13.89 mg.L and exceeded the national guideline for aquatic biota protection (1.4 mg.L) in 22 ecosystems. There was a correlation with salinity, since higher concentrations were registered in saline shallow lakes. No regional distribution pattern was detected but the highest con centrations (>9 mg.L) were recorded in northern lakes. The values of La Pampa, slightly higher than those of most of the water bodies in the province of Buenos Aires, were similar to those of Chasicó Lake, in the southwest of that province.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72763556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0