SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Decline of phosphorus, copper, and zinc in anaerobic swine lagoon columns receiving pretreated influent

Bode, Antonio; Anadón, Ricardo; Anxelu G. Morán, Xosé; Nogueira, Enrique; Teira, Eva; Varela, Manuel.

Long-term variability of phytoplankton biomass (chlorophyll a) and primary production (carbon fixation) in relation to changes in climatic and oceanographic factors was analysed for oceanic and shelf waters of the north and northwest Iberian Peninsula. Changes related to stratification in the water column and upwelling intensity were specifically addressed. The time series include measurements of primary production and biomass over 19 yr. Seasonally, the main mode of temporal variability of the series is the occurrence of phytoplankton blooms during the winter-spring and summer- autumn transition periods. On the northwestern coast (Galicia), the blooms are more frequent and attain higher biomass and production values than on the northern coast (Mar...

Tipo: Text

Palavras-chave: Primary production; Upwelling; Climate change; Nutrients; Remineralisation; NE Atlantic.

Ano: 2011

URL: http://archimer.ifremer.fr/doc/00052/16356/13862.pdf

Scientia Agricola

Szögi,Ariel A.; Vanotti,Matias B..

ABSTRACT Land application of both anaerobic lagoon liquid and sludge can increase nutrient accumulation beyond the soil’s assimilative capacity and become a threat to water quality in regions with intensive, confined swine production. In a 15-month meso-scale column study, we evaluated the effect of manure pretreatment on the reduction of total suspended solids (TSS), total phosphorus (TP), soluble reactive P (SRP), and total copper (Cu) and zinc (Zn) in swine lagoons using (i) enhanced solid-liquid separation (SS) and (ii) solid-liquid separation plus biological nitrogen treatment with nitrification-denitrification (SS + NDN). A conventional anaerobic lagoon treatment was included as a control. A mass flow balance revealed that with both pretreatments the...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Pig; Manure; Nutrients; Solid-liquid separation.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500417

Deficiencias nutrimentales en huertos de guayabo y su relación con la incidencia de peca en fruto.

Deficiencias nutrimentales en huertos de guayabo y su relación con la incidencia de peca en fruto.

Cardoso del Río, Israel.

Con el objetivo de identificar las deficiencias nutrimentales relacionadas con la incidencia de la peca de la guayaba en región oriente del estado de Michoacán, se realizó un muestreo de suelo y foliar el 8 de mayo de 2007 para la obtención de un diagnóstico preliminar para la posterior aplicación de tratamientos foliares que contrarrestaran posibles deficiencias relacionadas con los daños de la peca en fruto, en tres huertos de los municipios Zitácuaro, Juárez y Jungapeo. La aplicación de los tratamientos fue vía foliar, éstos fueron: 1) fertilización mineral, empleando la formulación NV3, consistente en 1.0, 1.0, 2.0, 2.0, 2.0, 0.03, 0.05, 0.02, 0.05 y 0.02 g L-1 de Urea, MgSO4, KNO3, CaNO3, KH2PO4, H3BO3, MnSO4 4H2O, CuSO4 5H2O, ZnSO4 7H2O y FeEDTA,...

Palavras-chave: Psidium guajava; Guava; Guayaba; Michoacán; Deficiencias nutrimentales; Nutrimientos; Nutrients; Nutrimental dynamics; Maestría; Edafología.

Ano: 2010

URL: http://hdl.handle.net/10521/197

Delayed sample filtration and storage effects on dissolved nutrients measured in agricultural runoff

Cardoso del Río, Israel.

Palavras-chave: Psidium guajava; Guava; Guayaba; Michoacán; Deficiencias nutrimentales; Nutrimientos; Nutrients; Nutrimental dynamics; Maestría; Edafología.

Ano: 2010

URL: http://hdl.handle.net/10521/197

NWISRL

Lentz, R.D..

Standard water quality analysis methods recommend that sediment-laden runoff waters sampled to determine dissolved nutrient concentrations be filtered immediately after collection. Few research studies have examined the influence of delayed filtration on sample stability or nutrient loss assessments. Twenty eight runoff water volumes were collected from 3 irrigation furrows during a 12-h irrigation set. Four subsamples of each volume were obtained; 2 were filtered (45 µm) in the field and the other 2 were filtered 10 days later, with or without boric acid treatment (1 mL saturated H3BO3 solution per 100 mL sample). All samples were refrigerated at 4 deg. C. Dissolved reactive P (DRP), NO3-N, and NH4-N concentrations were measured in all filtered...

Tipo: Article

Palavras-chave: Nitrogen; Phosphorous; Nutrients.

Ano: 2013

URL: http://eprints.nwisrl.ars.usda.gov/1516/1/1480.pdf

Détection satellitaire et modélisation opérationnelle de la production végétale non-fixée dans la bande côtière bretonne

Determination of macro and micronutrients in plants using the Agilent 4200 MP AES.

Penard, Cédric.

The negative impact of the man on the environment unquestionably increases. The coastal environment as a whole is the maritime environment which is the most exposed to man-made eutrophication. For instance, nitrate loads to coastal waters off Brittany (France) have increased 10 times (from 3 to s 30mg L-1NO3) during the four last decades. Eutrophication of this coastal zone is now a recurrent problem, more and more worrying. This eutrophication exhibits two main forms : " green tides ", which are caused by local proliferations and stranding of green macro-algae (particularly the Ulva species) in nitrogen-enriched areas ; phytoplanktonic blooms, which are responsible for coloured water events, toxic species can be present (Pseudo-Nitzschia, Alexandrium,...

Tipo: Text

Palavras-chave: Bande côtière bretonne; Modèle couplé hydrodynamique-biogéochimie; Nutriments; Chlorophyllea; Production primaire; Eutrophisation; Modèle opérationnel; Pseudo-Nitzschia; French Brittany coastal shelf; Hydrodynamical biogeochemical coupled model; Nutrients; Chlorophyll-a; Primary production; Eutrophication; Operational model; Pseudo-Nitzschia.

Ano: 2009

URL: http://archimer.ifremer.fr/doc/00015/12603/9481.pdf

Developmental expansion of the hilum in chickpea seed coats

LIBERATO, C. G.; BARROS, J. A. V. de A.; VIRGILIO, A.; MACHADO, R. C.; NOGUEIRA, A. R. de A.; NOBREGA, J. de A.; SCHIAVO, D..

The determination of macro and micronutrients in plant tissues is an important measure used to analyze plant nutritional status and to evaluate the possible need for fertilizer supplementation.

Tipo: Artigo de divulgação na mídia (INFOTECA-E)

Palavras-chave: Fertilizer supplementation.; Nutrients; Technology..

Ano: 2017

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1079521

Open Agri

Kriseman,M.L.

Palavras-chave: Chickpeas; Seed treatment; Crossing over; Nutrients; Mass media; Biological development; Fruits; Area; Biological phenomena; Diseases.

Ano: 2007

URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3335

Diagnóstico da fertilidade do solo em áreas de sequeiro de agricultores familiares em municípios do Sertão dos Inhamuns, Ceará.

SOUZA, H. A. de; CAVALCANTE, A. C. R.; TONUCCI, R. G.; POMPEU, R. C. F. F.; SOUZA, M. C. M. R. de.

bitstream/item/126439/1/cnpc-2015-Cot-145.pdf

Tipo: Comunicado Técnico (INFOTECA-E)

Palavras-chave: Semiárido; Brasil; Região Nordeste; Análise do solo; Fertilidade do solo; Matéria orgânica; Nutriente; Agricultura familiar; Comunidade rural; Caatinga; Soil analysis; Soil fertility; Organic matter; Nutrients; Rural communities; Semiarid soils; Brazil.

Ano: 2015

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1019645

Diagnostics of Sorghum and Pearl Millet grains-based nutrition in India

Open Agri

Rao, P.P..

Palavras-chave: Millets; Sorghum; Nutrient intake; Zinc; Cereals; Grain legumes; Proteins; Iron; Nutrients; Vitamins.

Ano: 2006

URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3199

Dietary Assessment of Major Trends in U.S. Food Consumption, 1970-2005

AgEcon

Wells, Hodan Farah; Buzby, Jean C..

This report examines major trends in the amount of food available for consumption in the United States between 1970 and 2005 using data from the ERS Food Availability (Per Capita) Data System. The report also estimates whether Americans are meeting Federal dietary recommendations for each of the major food groups by comparing the data with dietary recommendations in the 2005 Dietary Guidelines for Americans and the MyPyramid Food Guidance System. Findings show that Americans do not meet the Federal dietary recommendations. In order to meet them, Americans would need to substantially lower their intake of added fats, refined grains, and added sugars and sweeteners and increase their consumption of fruits, vegetables, whole grains, and lowfat milk and milk...

Tipo: Report

Palavras-chave: Agriculture; Added fats and oils; Added sugars and sweeteners; Dairy; Dietary Guidelines for Americans; Dietary recommendations; Eggs; Food; Food consumption; Fruits; Meat; MyPyramid Food Guidance System; Nutrients; Grains; Nuts; Vegetables.; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety.

Ano: 2008

URL: http://purl.umn.edu/58641

Digestibility and Physicochemical Characteristics of Tambaqui Waste Biological Silage Meal Included in Commercial Layer Diets*

Rev. Bras. Ciênc. Avic.

Guimarães,CC; Silva,AJI; Cruz,FGG; Rufino,JPF; Silva,AF; Costa,VR.

ABSTRACT This study aimed at evaluating the effects of the physicochemical and nutritional characteristics of a biological silage meal made of tambaqui waste on dietary nutrient apparent digestibility and energy metabolism of commercial layer diets. Seventy-two 61-week-old Hisex White hens were assigned according to a completely randomized experimental design in two treatments: control diet and diet with 5% tambaqui waste biological silage meal (TWBSM), with six replicates of six birds each. The ensiled biomass presented grey brown color, acid aroma, viscous texture, 5.27±0.016pH, 96.28% dry matter (DM), 33.29% crude protein (CP), 33.65% ether extract (EE), 14.37% ashes, 13.63% non-nitrogen extract (NNE), 65.16 g.kg-1 calcium (Ca), 22.90 g.kg-1 phosphorus...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Alternative food; Fish waste; Metabolizable energy; Nutrients; Silage.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300321

Disponibilização de K de rochas silicáticas para plantas de soja inoculadas com fungos micorrízicos arbusculares (FMA).

ANDRADE, L. R. M. de; FALEIRO, A. S. G.; SANTOS SOBRINHO, D. A.; NASCIMENTO, M. T. DO; SOUZA, A. L. DE.

bitstream/item/75813/1/bolpd-303.pdf

Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)

Palavras-chave: Fungo micorrízico arbuscular; Nutrientes; Arbuscular mycorrhizal fungus.; Rizosfera; Soja.; Nutrients; Soybeans.; Rhizosphere.

Ano: 2011

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/931541

Dry matter and macronutrient extraction curves of potato varieties in the Alto Paranaíba region, Brazil

AGRIAMBI

Silva,Carlos D. da; Soares,Maria E. P.; Ferreira,Miller H.; Cavalcante,Alian C. P.; Andrade,Guilherme A. V. de; Aquino,Leonardo A. de.

ABSTRACT Information on plant nutrient extraction is of utmost importance for the management of fertilization in crops. The objective of the study was to determine the accumulation of dry matter mass in the tubers and aerial parts of the plants and to generate absorption curves of macronutrients N, P, K, Ca and Mg for the potato varieties Ágata, Asterix, Atlantic and Taurus. The shoot and tuber samples were collected at 6, 13, 54, 66, 70, 82 and 97 days after planting. The highest accumulation of dry matter was observed in the Asterix and Atlantic varieties. The varieties Asterix and Atlantic showed higher N and K extraction and, consequently, higher productivity, while Taurus and Ágata presented lower yields and nutrient extraction. The period of greatest...

Tipo: Info:eu-repo/semantics/article

Palavras-chave: Solanum tuberosum; Absorption; Nutrients.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300176

Dynamics of nitrogen concentration on intercropped ryegrass - 10.4025/actascianimsci.v34i1.12661

Animal Sciences

Skonieski, Fernando Reimann; Universidade Federal de Santa Maria (UFSM); Viégas, Julio; Universidade Federal de Santa Maria (UFSM); Cruz, Pablo; Institut National de la Recherche Agronomique (INRA); Nornberg, José Laerte; Universidade Federal de Santa Maria (UFSM); Bermudes, Rogério Fôlha; Universidade Federal de Santa Maria (UFSM); Gabbi, Alexandre Mossate; Universidade Federal do Rio Grande do Sul (UFRGS).

The dynamics of nitrogen (N) in ryegrass intercropped with different forage species with regard to dry matter (DM) accumulation within an agroecological transition system was evaluated. Annual ryegrass was intercropped with black oats (RY + BO), white clover (RY + WC) and forage peanut (RY + FP). The experimental design was completely randomized, with three replications. The study applied the N dilution model for plant tissue which comparatively uses modifiable factors of the environment at optimal levels. The model shows decline in N concentration due to the DM accumulation of temperate grass pastures. Data were compared to model by the root mean square deviation analysis. Dilution coefficient (β), used in all pasture samples, was lower than -0.60....

Palavras-chave: Dilution coefficient; Forage peanut; Legumes; Nutrients; Oat; White clover.

Ano: 2011

URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12661

Dynamique du carbone et des nutriments dans la zone côtière Baie de l’Aiguillon-Pertuis Breton et influence des apports terrestres du bassin versant du Marais poitevin

Dynamique hivernale des nutriments et du carbone dans les exutoires du Marais poitevin et flux terrestres associés en Baie de l’Aiguillon

Lannuzel, Reva.

Coastal zones represent key systems in biogeochemical cycle couplings between continents, oceans and the atmosphere transporting considerable amounts of matter, energy and nutrients (C, N, P et Si) from land to sea. Despite its relatively modest surface area (7 % of the global ocean surface), this zone accounts for 14–30 % of all oceanic primary production. The present study deals with nutrients and carbon dynamics during a full hydrologic cycle in 2017 over the terrestrial-aquatic continuum formed by the Poitevin Marsh-Aiguillon Bay- Breton Sound to better understand terrestrial export influence on the coastal zone. Carbon and nutrient concentrations were sampled twice a month over heterogeneous sites (estuaries, channels and coastal sites) to integrate...

Tipo: Text

Palavras-chave: Zone côtière; Biogéochimie; Carbone; Nutriments; Chlorophylle a; Limitation potentielle et réelle; Dynamique.; Coastal zone; Biogeochemistry; Carbon; Nutrients; Chlorophyll a; Real and potential limitation; Spatio-temporal dynamic..

Ano: 2018

URL: http://archimer.ifremer.fr/doc/00445/55647/57299.pdf

Efecto de la aplicación de compost de cachaza y fertilizante químico en suelos calcáreos en la corrección de clorosis férrica y rendimiento de sorgo.

Le Marchand, Marie.

Coastal environments represent key systems in biogeochemical cycle couplings between continents, oceans and the atmosphere. Despite its relatively modest surface area (7 % of global ocean), this zone accounts for 14-30 % of all oceanic primary production. The amount of nutrients (N, P, C, Si) carried by terrestrial aquatic systems directly influences the primary production, the food web structure and the overall quality of these coastal environments. The present study deals with autumn-winter carbon and nutrients dynamics over terrestrial waters of the Marais poitevin watershed flowing to the Aiguillon bay (west of France). Five heterogeneous watercourses were sampled twice a month since January 2017 to measure nutrients and carbon concentrations and...

Tipo: Text

Palavras-chave: Zones côtières; Cycles biogéochimiques; Carbone; Nutriments; PCO2; Marais poitevin; Coastal areas; Biogeochemical cycles; Carbon; Nutrients; PCO2; Marais poitevin.

Ano: 2017

URL: http://archimer.ifremer.fr/doc/00393/50487/51223.pdf

Cortez Hernández, Graciano.

En la Mixteca Poblana, predominan suelos calcáreos que por su pH alcalino impiden que las plantas puedan absorber los nutrimentos como hierro y zinc, ocasionando la clorosis férrica, afectando los cultivos de esta región, tales como: caña de azúcar, sorgo, maíz, frijol e incluso los árboles frutales, repercutiendo en el desarrollo, rendimiento y en casos severos la muerte de la planta. En esta región está ubicado el ingenio azucarero de Atencingo que genera anualmente 45 mil toneladas de desechos orgánicos (cachaza). El objetivo de esta investigación fue evaluar el efecto de la incorporación de compost de cachaza al suelo en la corrección de clorosis férrica y rendimiento de sorgo. Se incorporó compost de cachaza a razón de cero, cinco y diez t ha-1 en...

Palavras-chave: Dosis de fertilización; Compost de cachaza; Deficiencia; Nutrimentos; Fertilización orgánica; Dose of fertilization; Compost; Filter cake; Deficiency; Nutrients; Organic fertilizer; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional.

Ano: 2010

URL: http://hdl.handle.net/10521/335

Efecto de la condición ambiental y la fertilización en el preacondicionamiento de Pinus engelmannii CARR. en el vivero y su desempeño en campo.

Efeito de procedências de Eucalyptus camaldulensis sobre os teores de nutrientes e de carbono orgânico do solo no cerrado.

García Pérez, José Luis.

El preacondicionamiento de la planta se realiza durante la etapa final de vivero y tiene como propósito favorecer su lignificación para que sea capaz de tolerar el estrés hídrico, nutricional y mecánico en los sitios de plantación. Esto se logra mediante un manejo adecuado de prácticas culturales como la fertilización y los riegos, mientras se elimina el efecto invernadero las plantas se exponen a condiciones ambientales de temperatura, humedad relativa e intensidad de luz, semejantes a las presentes en el campo. Se evaluó el efecto de: a) cuatro condiciones ambientales (invernadero, intemperie, malla sombra y malla sombra más intemperie) y b) tres niveles de fertilización (sin fertilización, dosis baja y dosis alta) y la interacción de éstos durante el...

Palavras-chave: Pinus engelmannii; Calidad de planta; Fisiología; Morfología; Nutrimentos; Seedling quality; Physiology; Morphology; Nutrients; Forestal; Maestría; Condición ambiental.

Ano: 2014

URL: http://hdl.handle.net/10521/2334