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Climate classification of the agricultural region of La Pampa province, Argentina 阿根廷拉潘帕省农业区气候分类

Semiarida Pub Date : 2021-08-01 DOI: 10.19137/semiarida.2021(02).09-20

M. Méndez, G. Vergara, Guillermo Casagrande, Sergio Bongianino, C. N. D. I. C. Y. T. Argentina

引用次数: 1

Human perceptions and attitudes in the production of alfalfa under irrigation in LaPampa, Argentina 阿根廷拉潘帕灌溉苜蓿生产过程中的人类认知和态度

Semiarida Pub Date : 2021-08-01 DOI: 10.19137/semiarida.2021(02).33-44

A. Iriarte, F. D. Cid, R. A. Sosa, J. Bernardos, C. N. D. I. C. Y. T. Argentina

引用次数: 0

Primera colección de Pinnasa volubilis (Loasaceae) en el Parque Nacional Lanín 兰宁国家公园的第一批松毛虫（Loasaceae）

Semiarida Pub Date : 2021-07-12 DOI: 10.19137/semiarida.2021(02).71-73

Andrea A. Medina, L. Torres

引用次数: 0

COVER CROPS AS PREDECESSOR OF PUMPKIN CROP IN THE SEMIARID PAMPA REGION 半干旱潘帕草原地区覆盖作物是南瓜作物的前身

Semiarida Pub Date : 2020-10-01 DOI: 10.19137/semiarida.2020(02).51-61

Juan Pablo Ponce, O. A. Siliquini, R. Fernández

{"title":"COVER CROPS AS PREDECESSOR OF PUMPKIN CROP IN THE SEMIARID PAMPA REGION","authors":"Juan Pablo Ponce, O. A. Siliquini, R. Fernández","doi":"10.19137/semiarida.2020(02).51-61","DOIUrl":"https://doi.org/10.19137/semiarida.2020(02).51-61","url":null,"abstract":"The objective was determine the effect of cover crops on the water use efficiency and total yield of the pumpkin crop. The study was carried out on a soil called petrocalcic Paleustoll, located in the south of the rugged plain of the semiarid Pampa region. In the same lot for three consecutive seasons, Rye (C) and rye + vetch (CV) were sown and fallow was established without cover cultivation. In this way, 6 management treatments for pumpkin cultivation were established: T1: without CC predecessor, with tillage prior to pumpkin planting, and without weed control during the pumpkin cycle. T 2: without predecessor CC with tillage prior to planting the pumpkin, with weed control (tillage and herbicide), during the pumpkin cycle. C H: Rye ancestor used as CC, with growth arrest by herbicide. C R: Rye ancestor used as CC, with growth arrest by rolling. CV H: Rye + Vetch ancestor used as CC, with growth arrest by herbicide. CV R: Rye + Vetch ancestor used as CC, with growth arrest by rolling. The results showed that on average in the 3 seasons C was higher than C V, in 22, 19 and 6% with respect to the total biomass, for the first, second and third seasons, respectively. Cover crops had higher fallow efficiency with respect to treatments without prior CC (T1 and T2). The highest pumpkin yields were over the CC, these being the ones with the lowest UC and the highest EUAt","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67747589","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

ZOOPLANKTON OF TWO SHALLOW LAKES IN THE SOUTH OF MEAUCO FORMATION (LA PAMPA PROVINCE, ARGENTINA) 米乌科组南部两个浅水湖的浮游动物（阿根廷拉普兰省）

Semiarida Pub Date : 2020-10-01 DOI: 10.19137/semiarida.2020(02).09-18

S. Echaniz, A. Vignatti, Javier Schlegel, N. Schiel

{"title":"ZOOPLANKTON OF TWO SHALLOW LAKES IN THE SOUTH OF MEAUCO FORMATION (LA PAMPA PROVINCE, ARGENTINA)","authors":"S. Echaniz, A. Vignatti, Javier Schlegel, N. Schiel","doi":"10.19137/semiarida.2020(02).09-18","DOIUrl":"https://doi.org/10.19137/semiarida.2020(02).09-18","url":null,"abstract":"The Meauco Formation, a dune region of the central Pampa province, has numerous shallow lakes. Although there is hydrological information about them, it is very scarce about their limnological characteristics. The objectives are to know the physical-chemical and zooplankton parameters of two nearby shallow lakes, with and without fishes: Santa Isabel I (SI I) and Santa Isabel II (I II) respectively, and determine the influence of zooplankton on phytoplankton biomass and transparency. It was sampled during 2018 and 2019. In both the mean salinity were less than 1g.L-1 and the Secchi disk depth was around 0.45m. The chlorophyll concentrations varied between 9.32 and 11.63 mg.m-3. Seven cladocerans, 4 copepods and 20 rotifers were recorded. Most of the taxa were shared by both lakes, however, 20 rotifers were recorded in SI I and 13 in SI II. The total zooplankton density did not differ, but SI I had greater abundance of rotifers (69% of total) and SI II of crustaceans (72%). The presence of fish influences the zooplankton composition but its small size, even in the absence of fish, makes it have little influence on the phytoplankton; therefore, no differences were found in the transparency and phytoplankton biomass of both lakes.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45378126","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

EXOMORPHOLOGY AND ANATOMY OF Geoffroea decorticans (FABACEAE) LEAF GALL INDUCED BY ERYOPHIDE MITES 红螨诱导的剥皮Geoffroea decorticans (FABACEAE)叶瘿的形态与解剖

Semiarida Pub Date : 2020-08-01 DOI: 10.19137/semiarida.2020(01).19-28

Bárbara Mariana Corró Molas, J. Martínez, A. Porta, I. Agudelo

引用次数: 0

INFLUENCE OF THE GENOTYPE ON THE GRAIN YIELD OF BREAD WHEAT AND ITS QUALITY IN THE DRYSUBHUMID PAMPAS REGION 干湿半湿润潘帕斯地区基因型对面包小麦产量及品质的影响

Semiarida Pub Date : 2020-08-01 DOI: 10.19137/semiarida.2020(01).29-40

M. Fernández, O. Zingaretti, D. Riestra

引用次数: 0

FIRE EFFECTS ON THE JUAN WILLIAMSON BOTANICAL GARDEN 火灾对胡安·威廉姆森植物园的影响

Semiarida Pub Date : 2019-12-01 DOI: 10.19137/semiarida.2019(02).73-78

Viviana J. Cenizo, M. Mazzola

引用次数: 0

THE EFFECT OF THE SOWING DATE, GENOTYPE AND THE FERTILITY ON GRAIN YIELD OF DURUM WHEAT IN THE DRYSUBHUMID PAMPAS REGION 干旱半湿润潘帕斯地区播种期、基因型和肥力对硬粒小麦产量的影响

Semiarida Pub Date : 2019-12-01 DOI: 10.19137/semiarida.2019(02).51-60

M. Fernández, Carolina Gaggioli, Rodolfo Repollo

引用次数: 0

REPELLENT ACTIVITY OF ESSENTIAL OILS FROM NATIVE PLANTS AND THEIR BLEND FOR Tribolium castaneum CONTROL IN STORE GRAINS 本地植物精油及其混合精油对储藏谷物中粟螨的驱避活性研究

Semiarida Pub Date : 2019-10-02 DOI: 10.19137/semiarida.2019(01).43-51

A. Saran, Lucía Fernández, Marisol Minig, M. B. Reinhard, L. Merini

{"title":"REPELLENT ACTIVITY OF ESSENTIAL OILS FROM NATIVE PLANTS AND THEIR BLEND FOR Tribolium castaneum CONTROL IN STORE GRAINS","authors":"A. Saran, Lucía Fernández, Marisol Minig, M. B. Reinhard, L. Merini","doi":"10.19137/semiarida.2019(01).43-51","DOIUrl":"https://doi.org/10.19137/semiarida.2019(01).43-51","url":null,"abstract":"Los aceites esenciales (EO) de 5 plantas aromaticas nativas de La Pampa, Argentina, se obtuvieron mediante hidrodestilacion y se analizaron para determinar su repelencia en adultos de Tribolium casteneum Herbst. Todos los EO probados mostraron una alta actividad de repelencia a la concentracion mas alta establecida (0.3 mg.cm 2 ). Los EO de Baccharis spartioides y Helianthus petiolaris fueron los mas eficientes, mostrando una mayor repelencia en comparacion con el control positivo estandar (DEET). A 3x101 mg.cm 2 , B. spartioides y H. petiolaris mostraron un 95% y un 92,2% de repelencia, respectivamente. La composicion quimica de los EO se analizo luego por cromatografia de gases espectrometria de masas (GCMS), se presenta la primera determinacion de la composicion quimica del EO de H. petiolaris . Finalmente, para evaluar la actividad de repelencia en “condiciones de campo” simuladas, se evaluo el comportamiento de la plaga en harina tratada. En presencia de EO H. petiolaris , el 90% de los insectos abandonaron el grano, mientras que B. spartioides indujo un 81% de emigracion. Para maximizar los rendimientos en la produccion de repelentes, se propuso una mezcla que utiliza EO limon comercial. Los resultados obtenidos muestran una diferencia significativa despues de 24 h de tratamiento, donde la repelencia de la mezcla persistio en contraste con los EO puros. Estos hallazgos presentan las mezclas de EOs de B. spartioides y H. petiolaris como alternativas prometedoras para controlar T. castaneum en granos almacenados.","PeriodicalId":34010,"journal":{"name":"Semiarida","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81928963","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: 5