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Absorption curves - mineral-extraction under an aeroponic system for white chrysanthemum (Dendranthema grandiflorum (Ramat.) Kitam. cv. Atlantis White) Acta Agron. (Palmira)
Chica Toro,Faber de Jesús; Garzón-González,Jorge M..
Abstract The aim of this study focused on the construction of the absorption and extraction curves under an aeroponic system for White chrysanthemum cv. Atlantis White, and therefore, propose the periods of maximum and minimum nutrient accumulation from aboveground, root and total biomass. Vegetative cycle of the plant, measured from the day after transplantation (dat) to aeroponic system, and the first day of court lasted 49 days. Evaluations were carried out each week on plants, in absolute competition. For the average aboveground biomass, three replicates were recorded. To obtain total root biomass only one sample, was measured. Therefore, total biomass in average, had achieved 130.9313 g.plant-1, where 72.26% (94.163 g) corresponded to the aboveground...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Macronutrients; Nutrient balance (plants); Nutritional status; Ornamental species; Plant development stage; Plant nutrition; Plant soil relations.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100086
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Análise de fatores aplicada na avaliação da influência de leguminosas arbóreas, nas características químicas de solo pastagem. Repositório Alice
DIAS, P. F.; SOUTO, S. M..
O objetivo do trabalho foi analisar, por meio do método multivariado análise de fatores, a influência de 30 tratamentos formados pela combinação de três leguminosas arbóreas (Dalbergia nigra, Jacarandá da Bahia; Enterolobium cantortisiliquum, Orelha de Negro; e Peltophorum dubium, Canafistula). cinca posições de amostragem do solo e duas profundidades de solo, no comportamento de oito variáveis relacionadas a análise química do solo. O fator rotacionado F1, por explicar aproximadamente a metade da variância do fator, mostrou que a influência da copa nos teores de Mg e K do solo foi maior na leguminosa fixadora de nitrogênio. a Orelha de Negro; enquanto fora da copa, a leguminosa não nodulante Canafistula apresentou os maiores teores para esses nutrientes....
Tipo: Separatas Palavras-chave: Fixação biológica de nitrogênio; FBN; Macronutriente; Análise multivariada; Biological nitrogen fixation; BNF; Macronutrients; Statistical methods.; Método Estatístico; Pastagem.; Multivariate analysis; Pastures..
Ano: 2006 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/597196
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Biomassa e conteúdo de elementos minerais nos compartimentos arbóreos de Ceiba pentandra (L.) GAERTN. Repositório Alice
NEVES, E. J. M.; REISSMANN, C. B.; DUNISCH, O..
A quantificacao da biomassa e o conteudo de macronutrientes e Al foram estudados em Ceiba pentandra. Para tanto, foram selecionadas oito arvores da especie. Qautro delas foram amostradas aos 43 e quatro aos 55 meses de idade, apos o plantio. As mesmas foram separadas nos seguintes compartimentos: tronco; casca; folhas; peciolo e galhos. A biomassa seca total produzida por Ceiba foi de 82,03 t.ha aos 43 meses e 166,65 t.ha aos 55 meses. Nas mencionadas idades, essa biomassa distribuiu-se entre os compartimentos estudados na seguinte ordem decrescente (t.ha): tronco (45,31; 98,52); casca (15.19; 30,52); galhos (14,61; 28,71); folhas + peciolo (6,92; 8,90). Nas diferentes partes da especie estudada, os maiores acumulos registrados foram para: K no tronco; Ca...
Tipo: Artigo de periódico Palavras-chave: Macronutrientes; Nutricao florestal; Macronutrients; Forest Nutrition; Amazon region.; Amazonia..
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/289804
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Boron and calcium sprayed on 'Fuyu' persimmon tree prevent skin cracks, groove and browning of fruit during cold storage Ciência Rural
Ferri,Valdecir Carlos; Rombaldi,Cesar Valmor; Silva,Jorge Adolfo; Pegoraro,Camila; Nora,Leonardo; Antunes,Pedro Luiz; Girardi,Cesar Luiz; Tibola,Casiane Salete.
Flesh softening, skin browning and rotting are chief problems during cold storage (CS) of 'Fuyu' Persimmon. We studied the effects of boron (B) and calcium (Ca) sprayed on the trees during three consecutive years, on the development of skin cracks, grooves and browning in persimmon fruit under CS in Farroupilha, RS, Brazil (29°31' south, 51°21' west, about 750 m altitude). A homogeneous orchard area of 0.5 ha was delimitated and three sets of five plants for each treatment were randomly selected. The persimmon trees were sprayed at a 20 day interval, from 15th January until harvest, for three consecutive years, with: T1) water; T2) calcium nitrate at 0.5% (m/v); T3) calcium chloride at 0.5% (m/v); and T4) boron at 0.3% (m/v). The fruit were harvest with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diospyrus kaki; Postharvest injuries; Micronutrients; Macronutrients.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000800009
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Carotenoid production in sugarcane juice and synthetic media supplemented with nutrients by Rhodotorula rubra l02 BJM
Bonadio,Mariana de Paula; Freita,Lidyane Aline de; Mutton,Márcia Justino Rossini.
ABSTRACT In order for the use of biological carotenoids to become feasible, it is necessary to have adequate low cost sources and improved methods of cultivation. The aim of this study was to evaluate the effect of supplementation with nitrogen, phosphorus, zinc, and magnesium, on the biomass and carotenoid volumetric production by yeast Rhodotorula rubra L02 using a complex medium (sugarcane juice) and synthetic media (sucrose and maltose) as substrates. The experimental design used for each substrate was randomized in blocks with 16 treatments and 3 repetitions. The treatments were compound for 15 different combinations of nutrients (N; Mg; Zn; P, N + Mg; N + Zn; N + P; Mg + Zn; Mg + P; Zn + P; N + P + Zn; N + P + Mg; N + Zn + Mg; P + Zn + Mg; N + Zn +...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Yeasts; Pigments; Macronutrients; Micronutrients; Killer activity.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400872
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Chemical attributes of soil under cassava wastewater application in Marandugrass cultivation AGRIAMBI
Bezerra,Marcio G. da S.; Silva,Gualter G. C. da; Difante,Gelson dos S.; Emerenciano Neto,João V.; Oliveira,Ermelinda M. M.; Morais,Éric G..
ABSTRACT There is a worldwide concern regarding the management of agroindustrial residues, involving sustainable practices that contribute to taking advantage of the residues as inputs in productive processes, allowing greater efficiency in the integration of agricultural activities and mitigating their adverse effects on the soil. Therefore, the objective of this study was to assess the effects of application of cassava wastewater on the chemical attributes of the soil cultivated with Brachiaria brizantha cv. Marandu. The experimental design was in randomized blocks with five treatments (0, 15, 30, 60 and 120 m³ ha-1 of cassava wastewater) and four repetitions. To characterize soil chemical attributes soil samples were collected at depths 0 to 10 and 10...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biofertilizer; Macronutrients; ‘manipueira’; Soil fertility.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000800579
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Chemical characterization and mineral levels in the fruits of blackberry cultivars grown in a tropical climate at an elevation - doi: 10.4025/actasciagron.v35i2.16630 Agronomy
Guedes, Mayara Neves Santos; Universidade Federal de Lavras - UFLA; Abreu, Celeste Maria Patto de; Universidade Federal de Lavras; Maro, Luana Aparecida Castilho; Universidade Federal de Lavras; Pio, Rafael; Universidade Federal de Lavras; Abreu, José Renato de; Universidade Federal de Lavras; Oliveira, João Otávio de; Universidade Federal de Lavras.
Sensorial attributes such as color, texture, acidity and nutritional composition are essential quality components for blackberry (Rubus spp.). The mineral content and quality of fruits of different blackberry cultivars produced in Lavras, Southern Minas Gerais, in a tropical climate at an elevation (Cwb, according to Köppen) were analyzed. The analyzed minerals were phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), zinc (Zn), manganese (Mn), copper (Cu) and iron (Fe). Additionally, chemical characteristics, the total acidity (citric acid), pH, soluble solids (°Brix) and vitamin C (ascorbic acid) level, and sensory characteristics, color (L*a*b) and firmness (N) were also evaluated. According to the results, the Choctaw and Xavante blackberry...
Palavras-chave: 5.07.01.02-9 Rubus spp.; Micronutrients; Macronutrients; Vitamin C Química Física Físico-Química e Bioquímica dos Alim. e das Mat.-Primas Alimentares.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16630
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Chemical composition of Ilex paraguariensis St. Hil. under different management conditions in seven localities of Paraná State BABT
Reissmann,Carlos Bruno; Radomski,Maria Izabel; Quadros,Ruth Maria Bianchini de.
Ilex paraguariensis St. Hil. (erva-mate), the mate tea, is a forest tree whose natural distribution in the Brazilian territory embraces the States of Mato Grosso do Sul, Paraná, Santa Catarina and Rio Grande do Sul. Its economical importance is moreover related to tea production. The purpose of this study is to characterize the leaf chemical composition in relation to different plantation and management conditions. Chemical analysis were performed on plants of different ages,in naturally occurring areas, planted stands, and seedbeds. The most remarkable elements observed in the study were P with average values ranging from 0,5 - 3,2 g kg-1 D.W., Mn values from 346 - 3.330 mg kg-1 D.W., and Al values from 167 - 1.235 mg kg-1 D.W.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Macronutrients; Micronutrients; Aluminium; Foliar analysis; Ilex paraguariensis; Erva-mate.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200009
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Composition, content of bioactive compounds, and antioxidant activity of fruit pulps from the Brazilian Amazon biome PAB
Virgolin,Lara Borghi; Seixas,Fernanda Rosan Fortunato; Janzantti,Natália Soares.
Abstract: The objective of this work was to evaluate the physicochemical composition, the bioactive compounds, and the total antioxidant activity of the fruit pulps of abiu (Pouteria caimito), achachairu (Garcinia humilis), araza (Eugenia stipitata), bilimbi (Averrhoa bilimbi), and yellow mangosteen (Garcinia xanthochymus) from the Brazilian Amazon biome. Total soluble solid content, total and reducing sugar contents, titratable acidity contents, pH, ascorbic acid content, moisture, protein, lipid, ash, and caloric value were determined. The contents of total anthocyanins, yellow flavonoids, and total carotenoids, besides total phenolic compounds and antioxidant activity, were also evaluated. The abiu pulp showed the highest contents of ash, total sugars,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon biome; Exotic fruit; Fruit physicochemical composition; Macronutrients; Micronutrients.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000933
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Content, extraction and export of nutrients in sugarcane under salinity and leaching fraction AGRIAMBI
Lira,Raquele M. de; Silva,Ênio F. de F. e; Silva,Gerônimo F. da; Souza,Diego H. S. de; Pedrosa,Elvira M. R.; Gordin,Leandro C..
ABSTRACT The objective of this study was to evaluate the contents of macronutrients and also chlorine and sodium in the diagnostic leaf, and the extraction and export of macronutrients in sugarcane irrigated with saline water and leaching fractions. The experiment was conducted in a complete randomized design in a 5 x 2 factorial scheme with four replications, corresponding to five levels of water salinity (0.5, 2.0, 3.5, 5.0 and 6.5 dS m-1) and two leaching fractions (L1 = 0 and L2 = 0.17). The treatments were applied 60 days after planting. At 280 days after planting, diagnostic leaves were collected and used to evaluate the nutritional status and the contents of Cl and Na. At 360 days after planting, the sugarcane was harvested and its stalks were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp.; Saline waters; Macronutrients.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000600432
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Decomposition and Nutrient Release of Cover Crops in Mango Cultivation in Brazilian Semi-Arid Region Rev. Bras. Ciênc. Solo
Freitas,Maria do Socorro Conceição de; Souto,Jacob Silva; Gonçalves,Mariana; Almeida,Larissa Emanuelle da Silva; Salviano,Alessandra Monteiro; Giongo,Vanderlise.
ABSTRACT Knowledge of the decomposition dynamics of aboveground phytomass and its release of nutrients in mixtures of cover crops as well as the impact on the soil tillage system is fundamental for the sustainable management of agroecosystems. This work aimed to evaluate whether soil tillage and the choice of cover crops cultivated in the interrows can be technological strategies to increase dry biomass production, increase the capacity to add carbon, and improve macronutrient cycling in a mango ( Mangifera indica L.) orchard in a semi-arid environment. The field experiment (sixth year) consisted of two soil tillage systems (NT-no tillage and CT-conventional tillage) combined with three plant mixtures (PM1-75 % leguminous + 25 % grasses and oilseed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Macronutrients; Plant mixtures; Decomposition rate; Mangifera indica L.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100514
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Deposição, decomposição e conteúdo de nutrientes de serapilheira em área de integração lavoura-pecuária-floresta na região do Cerrado. Repositório Alice
RIBEIRO, F. P.; PULROLNIK, K.; VILELA, L.; GATTO, A..
RESUMO. Este trabalho teve por objetivo analisar a deposição, decomposição e os teores de nutrientes da serapilheira em área de integração lavoura-pecuária-floresta (ILPF), na Embrapa Cerrados, Planaltina, DF. Foram instalados coletores de serapilheira, e foram utilizados litterbags para avaliação da decomposição. Os coletores e os litterbags foram alocados entre árvores e entre renques. Em cada litterbag foram adicionados 20 g de serapilheira de eucalipto. As amostras de serapilheira de deposição e da decomposição foram secas e encaminhadas para laboratório, para análise de macronutrientes. A produção total de serapilheira foi de 9.394,2 kg ha -1 entre árvores e 3.726,4 kg ha -1 entre renques. A precipitação pluvial influenciou marcadamente a decomposição...
Tipo: Artigo de periódico Palavras-chave: Sistemas agroflorestais; Macronutrientes; Liteira; Agroforestry systems; Macronutrients; Litter.
Ano: 2022 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1142997
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DRIS Norms for grafted and non-grafted red bell pepper in semi arid climate conditions in a greenhouse Horticultura Brasileira
Sánchez,Esteban; Soto-Parra,Juan Manuel; Preciado-Rangel,Pablo; Llanderal,Alfonso; Lao,María Teresa.
ABSTRACT The objective of this study was to compute and compare DRIS norms for grafted and non-grafted red bell pepper crops grown in semi arid climate conditions. DRIS norms were computed with 84 samples of first young mature leaves collected during developed stage. The experiment had a completely randomized block design, and the values obtained for each plant and each variable were considered as independent replicates. Thirty-two DRIS norms nutrient ratios and coefficients of variation (CV) were computed from N, P, K, Ca, Mg, Fe, Cu, Zn and Mn analytical results. The ratios P/N and K/N in grafted and non-grafted pepper plants, showed low CV and therefore may play a fundamental role in crop production according with the DRIS norms calculated, since as...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capsicum annuum; Diagnostic and Recommendation Integrated System; Foliar diagnostic; Leaf analysis; Nutrient ratio; Macronutrients.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300371
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Efeito da aplicação do lodo de esgoto nos teores solúveis e totais de elementos do solo sob o sistema de produção de Bracatinga (Mimosa scabrella Benth.). Repositório Alice
LOURENÇO, R. S.; ANJOS, A. R. M. dos; MEDRADO, M. J. S.; LIBARDI, P. L..
Lodo de esgoto aeróbico, calado e com 87% de umidade, produzido pela ETEBelém em Curitiba, PR, foi utilizado no sistema de produção da bracatinga (Mimosa scabrella Benth.), num ensaio de campo conduzido em Cambissolo álico epidistrófico Tb A húmico, no município de Colombo, PR. Foram testadas dosagens de até 70 t/ha (base úmida), distribuídas na superfície e não incorporadas ao solo. Análises químicas dos teores de nutrientes do solo em quatro profundidades (15, 30, 45 e 60 cm), decorridos 6 meses da aplicação, quando se cultivou, simultaneamente, feijão, milho e bracatinga, indicaram que: não houve variação nos teores de matéria orgânica, P, K, Cu, Fe, Mn e Zn solúveis; houve aumento do pH e diminuição do Al e do H+AI; houve aumento nos teores solúveis de...
Tipo: Artigo de periódico Palavras-chave: Macronutriente; Micronutriente; Elemento toxico; Regiao Sul; Brasil; Macronutrients; Toxic elements; Southern Brazil.; Mimosa Scabrella.; Metal Pesado; Heavy metals; Trace elements..
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/282203
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Efeito de micorrizas arbusculares sobre o crescimento e nutrição mineral de Brachiaria brizantha cv. Marandu. Repositório Alice
COSTA, N. de L.; PAULINO, V. T.; COSTA, R. S. C. da; PEREIRA, R. G. de A.; TOWNSEND, C. R.; MAGALHAES, J. A..
O efeito da inoculação de micorrizas arbusculares (MA) sobre o crescimento e composição química de Brachiaria brizantha cv. Marandu foi testada, sob condições de casa-de-vegetação. Foram avaliadas oito espécies de MA: Glomus mossaea, G. fasciculatum, G. etunicatum, G. macrocarpum, Gigaspora margarita, Scutellospora heterogama, Acaulospora laevis e A. muricata. A inoculação de MA aumentou significativamente os rendimentos de massa seca (MS), teores e absorção de fósforo da gramínea...
Tipo: Separatas Palavras-chave: Colonização radicular; Macronutrientes; Produção de massa seca; Dry matter yield; Macronutrients; Root colonization.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/949827
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Effect of polymers associated with N and K fertilizer sources on Dendrathema grandiflorum growth and K, Ca and Mg relations BABT
Regiane Cristina Marcato,Sita; Reissmann,Carlos Bruno; Marques,Renato; Oliveira,Edilson de; Taffarel,Angela Daniela.
This study was conducted to evaluate the effect of polymer used with different nitrogen and potassium sources on the growth and nutrition of chrysanthemum (Dendranthema grandiforum, var. "Virginal") and on chemical characteristics of substrate. Two substrates were evaluated: 1) composite with 50 % organic soil, 45 % sand, and 5 % composted tobacco; 2) plow layer soil (0-20 cm depth; red oxisol typical dystrophic). The experimental design was a factorial (4x2x2) and included four polymer rates (0, 1, 2, and 4 g kg-1of substrate), two nitrogen ((NH4)2SO4 and (H2N)2CO), and two potassium (KCl and K2SO4) sources. Dry biomass, flower number, and concentration of K, Ca, and Mg were evaluated. Inverse relationships between polymer rates and plant biomass,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrogel; Polyacrylamide; Chrysanthemum; Fertilizer; Macronutrients.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300002
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Effects of macro and micronutrients on buffalo semen quality. Repositório Alice
SANTOS, A. X; GARCIA, A. R.; NAHUM, B. de S.; FATURI, C.; LOURENÇO JÚNIOR, J. B.; KAHWAGE, P. R.; OLIVEIRA, K. C. C. de.
Anim. Reprod., v.9, n.4, p.1031, Oct./Dec. 2012
Tipo: Separatas Palavras-chave: Buffalo; Semen quality; Micronutrientes; Macronutrients.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/937873
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Evolution of Forest Systems: the Role of Biogeochemical Cycles in Determining Sustainable Forestry Practices Ecology and Society
Flueck, Werner T.; National Council for Scientific and Technical Research (CONICET), Argentina; Institute of Natural Resources Analysis, Universidad Atlantida Argentina; Swiss Tropical Institute, University of Basel; wtf@deerlab.org.
The exploitation of natural resources such as forests leads to sustainable forest management (SFM). The key question is how to define and parametrize “sustainable use.” Promoting forest use that conserves spatial characteristics of forest landscapes and the structure and composition of forest stands was proposed as a way of maintaining elements of biodiversity such as species richness and genetic variation. However, to establish the parameter space for sustainable forest use, it is essential to consider the nutrient requirements of forest systems, that is, plants and animals, the need for fertilizer application, and the effects on biogeochemical cycles, a cornerstone of biological evolution and, thus, biodiversity. The use of forest...
Tipo: Peer-Reviewed Response Palavras-chave: Biogeochemical cycle; Fertilizer; Macronutrients; Micronutrients; Phosphorus; Selenium; Sustainable forest management.
Ano: 2009
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Food Demand Analysis: A New Approach AgEcon
Di Giuseppe, Stefania.
In this paper a method to examine how households make their food choice considering micronutrients through utility theory is applied. The findings support the argument that nutrients play an important roles in the demand for food. The method is illustrated using the raw data EIH 2000/2001 (Enquesta Integrata de Hogares) for a set of different food groups.
Tipo: Conference Paper or Presentation Palavras-chave: Utility Theory; Demand Analysis; Food; Macronutrients; Micronutrients; Malnutrition.; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis.
Ano: 2011 URL: http://purl.umn.edu/103815
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Gas exchange, phisiological indexes and ionic accumulation in Annona emarginata (Schltdl.) H. Rainer seedlings in nutrients solution Rev. Bras. Frutic.
Baron,Daniel; Ferreira,Gisela; Rodrigues,João Domingos; Boaro,Carmen Sílvia Fernandes; Macedo,Ana Cláudia.
"Araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) has been consider a good alternative in rootstock production for the main commercial Annonaceae species. Although this species develops in different soil and climate conditions, there is no understanding by the physiological responses of this species at different nutritional levels. Thus, the objective of this study was to evaluate the influence of different ionic strengths on development of vegetative species known as "Araticum-de-terra-fria". It was evaluated in seedlings grown in different ionic strengths (25% I, 50% I, 75% I and 100% I) of the complete nutrient solution Hoagland and Arnon (1950) nº 2, for 140 days, the following characteristics: Gas Exchange (CO2 assimilation rate,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Annonaceae; Araticum-de-terra-fria; Seedlings; Rootstock; Macronutrients.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200005
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