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Search Results: 1 - 10 of 13676 matches for " Sartori Ivar Ant?nio "
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Reten??o de frutos de laranjeiras de umbigo ?Monte Parnaso? em fun??o da aplica??o de 2,4-d, ácido giberélico e da anelagem de ramos
Sch?fer, Gilmar;Koller, Otto Carlos;Sartori, Ivar Antnio;
Ciência Rural , 1999, DOI: 10.1590/S0103-84781999000400012
Abstract: the present trial was carried out aiming to increase fruit set of 'monte parnaso' (citrus sinensis osbeck) navel oranges budded on trifoliate orange (poncirus trifoliata raf.) rootstocks grown in rio grande do sul state, brazil. in june 1996, seven-year-old navel orange trees were sprayed with growth regulators combined or not with girdling and fertilization. in the main plot the following treatments was conducted: (t1) control (treatments in november); (t2) 10ppm of ga3 in august of 96 + 10ppm of ga3 in may of 97; (t3) 10ppm of ga3 in august of 96 + 10ppm of ga3 and 15ppm of 2,4-d in may of 97; (t4) t3 + 5ppm of ga3 in october of 96; (t5) t4 + [0,3% znso4 + 0,15% of mnso4 and 2% of fertilizer n-p-k (26-00-26), on october of 96]; (t6) t5 + branch girdling in october of 96. in the sub-plot, accomplished in november (20/11), they were the combinations of all treatments with: (a) 15ppm of 2,4-d; (b) branch girdling; c) 15ppm of 2,4-d + branch girdling. of december of 96 to august of 97, the number of fallen fruits was counted by tree, and in august of 97 the number and weight of harvested fruits were assessed. the results showed that t4, t5 and t6 significantly reduced the number of dropped fruits and increased the weight and number of fruits produced.
PRODU??O E DESENVOLVIMENTO DA TANGERINEIRA-'MONTENEGRINA' PROPAGADA POR ENXERTIA E ESTAQUIA, NO RIO GRANDE DO SUL
SCH?FER, GILMAR;PANZENHAGEN, NESTOR VALTIR;SARTORI, IVAR ANTNIO;SCHWARZ, SERGIO FRANCISCO;KOLLER, OTTO CARLOS;
Revista Brasileira de Fruticultura , 2001, DOI: 10.1590/S0100-29452001000300045
Abstract: the mandarin 'montenegrina' (citrus deliciosa ten.) yield from plants propagated either by grafting or cutting was evaluated at the 'universidade federal do rio grande do sul' experimental agronomic station, southern brazil, from 1993 to 1998. three rootstocks were used in the grafted plants. the rootstocks studied were: 'swingle' citrumelo [citrus paradisi macf. x poncirus trifoliata (l.) raf.] 'troyer' citrange (citrus sinensis x p. trifoliata) and trifoliate orange (p. trifoliata). the work was done using a randomized blocks design, with four replicates and five useful plants per plot. the yield and fruits number per plant were evaluated from 1993 to 1998. the 1995 yield was not significative due to alternation. 'swingle' citrumelo rootstock promoted higher productive efficiency in 'montenegrina' mandarins. trifoliate orange decreased the vegetative development but induce low productive efficiency in 'montenegrina' mandarins. cutting was a worse plant propagation strategy than grafting when 'swingle' citrumelo and 'troyer' citrange were used as rootstocks.
CIANAMIDA HIDROGENADA, THIDIAZURON E óLEO MINERAL NA QUEBRA DA DORMêNCIA E NA PRODU??O DO PESSEGUEIRO cv. CHIRIPá
NUNES, JOSé LUIS DA SILVA;MARODIN, GILMAR ARDUINO BETTIO;SARTORI, IVAR ANTNIO;
Revista Brasileira de Fruticultura , 2001, DOI: 10.1590/S0100-29452001000300008
Abstract: the present work was conducted in 1999, at the esta??o experimental agron?mica of the universidade federal do rio grande do sul, located in the county of eldorado do sul, rio grande do sul, latitude 30o05'52"s, longitude 51o39'08" w and altitude at 46 meters. were tested the effects of the hydrogen cyanamide (h.c.) and mineral oil (m.o.) in mixture, mineral oil (m.o.) and thidiazuron (tdz) with mineral oil (m.o.), on bud break, yield and anticipation of the crop. trees were spayde at bud stage a. the following treatments were tested: h.c. 0,5%, 1,0% and 1,5% + m.o. 1,0%, m.o. 1,0% and 2,0%, tdz 200 and 400 ppm + m.o. 2,0% and control (without any spray). the treatments did not result in anticipation of the bud burst. the treatment h.c. 1,5% and m.o. 1,0% provided enough yield to make possible the cultivation of "chiripá" in mild winters conditions, but there was not significant difference in fruit weight. tdz, at the tested concentrations, was not efficient to break the dormancy of this cultivar. no effect or crop anticipation was observed.
CIANAMIDA HIDROGENADA, THIDIAZURON E óLEO MINERAL NA QUEBRA DA DORMêNCIA E NA PRODU O DO PESSEGUEIRO cv. CHIRIPá
NUNES JOSé LUIS DA SILVA,MARODIN GILMAR ARDUINO BETTIO,SARTORI IVAR ANTNIO
Revista Brasileira de Fruticultura , 2001,
Abstract: Este trabalho foi realizado no ano de 1999, na Esta o Experimental Agron mica da Universidade Federal do Rio Grande do Sul, localizada no município de Eldorado do Sul, Estado do Rio Grande do Sul, latitude 30°05'52" S, longitude 51°39'08" W e altitude de 46 metros. Foram testados os efeitos da Cianamida Hidrogenada (C.H.) e óleo Mineral (O.M.) em mistura, óleo Mineral (O.M.) e Thidiazuron (TDZ) com óleo Mineral (O.M.), sobre brota o, frutifica o, produ o e antecipa o de colheita. Os tratamentos foram aplicados quando as plantas estavam no estádio fenológico A. Foram testados os seguintes tratamentos: C.H. 0,5%, 1,0% e 1,5% + O.M 1,0%, O.M. 1,0% e 2,0%, TDZ 200 e 400 ppm + O.M. 2,0% e testemunha (sem pulveriza o). Os tratamentos n o anteciparam a brota o das gemas vegetativas. O tratamento C.H. 1,5% com O.M. 1,0% proporcionou produ o suficiente para viabilizar o cultivo do "Chiripá" em condi es de inverno ameno, mas n o houve diferen as significativas no peso médio dos frutos. O TDZ, nas dosagens testadas, n o se mostrou eficiente na quebra de dormência desta cultivar. N o houve efeito na antecipa o da colheita.
PRODU O E DESENVOLVIMENTO DA TANGERINEIRA-'MONTENEGRINA' PROPAGADA POR ENXERTIA E ESTAQUIA, NO RIO GRANDE DO SUL
SCH?FER GILMAR,PANZENHAGEN NESTOR VALTIR,SARTORI IVAR ANTNIO,SCHWARZ SERGIO FRANCISCO
Revista Brasileira de Fruticultura , 2001,
Abstract: A tangerineira-'Montenegrina' (Citrus deliciosa Ten.), devido às boas características de sabor, conserva o e colheita tardia dos frutos, é muito apreciada e cultivada no Rio Grande do Sul. Os pomares comerciais s o praticamente formados por mudas enxertadas sobre Poncirus trifoliata (L.) Raf. Devido à escassez de informa es relativas à combina o desta cultivar com outros porta-enxertos, bem como sua propaga o por estaquia, esta pesquisa objetivou estudar o comportamento inicial de plantas enxertadas sobre citrange 'Troyer' (Citrus sinensis (L.) Osb. x P. trifoliata), citrumelo 'Swingle' (C. paradisi Macf. x P. trifoliata) e P. trifoliata e de plantas propagadas por estaquia. O experimento foi instalado na Esta o Experimental Agron mica da Universidade Federal do Rio Grande do Sul - UFRGS, em junho de 1989, delineado em blocos casualisados, com cinco plantas úteis por parcela e quatro repeti es. Os resultados compreenderam as primeiras safras ocorridas de 1993 a 1998. O citrumeleiro 'Swingle' foi o porta-enxerto que melhores resultados apresentou, aumentando a eficiência produtiva da tangerineira-'Montenegrina', cultivada na Depress o Central do Rio Grande do Sul, sendo que o Poncirus trifoliata diminuiu o desenvolvimento vegetativo das copas e induziu baixa eficiência produtiva. A propaga o por estaquia n o ofereceu vantagens em rela o à enxertia sobre citrumeleiro 'Swingle' e citrangeiro 'Troyer'.
Efeito de reguladores de crescimento, aplicados em diferentes épocas, e da incis o anelar dos ramos principais sobre a produ o da laranjeira de umbigo 'Monte Parnaso'
Sch?fer Gilmar,Koller Otto Carlos,Sartori Ivar Antnio,Casali Michel Elias
Ciência Rural , 2001,
Abstract: Com o propósito de reduzir a queda prematura de frutos e aumentar a produ o de laranjeiras de umbigo 'Monte Parnaso' (Citrus sinensis [L.] Osbeck), no ano agrícola de 1997/98, plantas com seis anos de idade, enxertadas sobre Poncirus trifoliata (L.) Raf., de um pomar comercial, da empresa Panorama Citros, situado no Município de Butiá, Estado do Rio Grande do Sul foram pulverizadas com os seguintes tratamentos: T1) Testemunha; T2) 5ppm de AG3 no final da queda das pétalas, em setembro de 1988; T3) Incis o anelar da casca dos ramos principais 10 dias após a flora o, em setembro de 1988; T4) Idem T2 + T3; T5) 15ppm de 2,4-D em novembro de 1988; T6) Idem T4 + T5; T7) Incis o anelar da casca dos ramos principais em novembro de 1988; T8) Idem 5 + 7; T9) Idem T6 + T7; T10) Idem T6 + 10ppm de AG3 com 15ppm de 2,4-D em maio de 98; T11) Idem T9 + 10ppm de AG3 e 15ppm de 2,4-D em maio de 1988. O delineamento experimental adotado foi em blocos ao acaso, com quatro repeti es usando-se três plantas úteis por parcela. Todos os tratamentos em rela o a testemunha promoveram um aumento na ordem de 45% na produ o de frutas em número e peso. O peso médio, sólidos solúveis totais, acidez total titulável e a percentagem de suco nos frutos n o foram afetados significativamente.
Efeito de reguladores de crescimento, aplicados em diferentes épocas, e da incis?o anelar dos ramos principais sobre a produ??o da laranjeira de umbigo 'Monte Parnaso'
Sch?fer, Gilmar;Koller, Otto Carlos;Sartori, Ivar Antnio;Casali, Michel Elias;Lima, Jurandir Gon?alves de;
Ciência Rural , 2001, DOI: 10.1590/S0103-84782001000400003
Abstract: the present trial was carried out aiming to increase fruit set of 'monte parnaso' (citrus sinensis [l.] osbeck) navel oranges budded on trifoliate orange (poncirus trifoliata [l.] raf.) rootstocks grown in the state of rio grande do sul, brazil. in 1996, six-year-old navel orange trees were sprayed with growth regulators combined or not with girdling. the following treatments (t) was conducted: t1) control; t2) spraying of five ppm of ga3 at the end of petal fall; t3) girdling 10 days after petal fall; t4) t2 plus t3; t5) spraying of 15ppm 2.4-d; t6) t4 plus t5; t7) girdling in november 15th; t8) t5 plus t7; t9) t6 plus t7; t10) t6 plus spraying of 10ppm of ga3 and 15ppm of 2.4-d in may of 1998; t11) t9 plus spraying of 10ppm of ga3 and 15ppm 2.4-d in may of 1998. the results showed increased the weight (45%) and number of fruits produced. the treatments did not affect the fruits average and total soluble solids, titratable total acidity and percentage of juice contents.
Produ??o de frutos e incidência de cancro cítrico em laranjeiras "Monte Parnaso" enxertadas sobre sete porta-enxertos
Reis, Bernadete;Koller, Otto Carlos;Schwarz, Sergio Francisco;Theisen, Sergiomar;Sartori, Ivar Antnio;Nichele, Fernanda Severo;Lorscheiter, Rafael;Petry, Henrique Belmonte;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000300012
Abstract: citrus rootstocks can exert some influences on fruit production and susceptibility of the plants to citrus canker (cc). this research was performed aiming to select rootstocks which induce higher productivity index and lower susceptibility of 'monte parnaso' navel orange (citrus sinensis) trees to the bacteria xanthomonas axonopodis pv. citri. the research was carried out in an experimental orchard, with ten-years-old trees, planted at spacement of 2.5m between trees and 6.0m between rows, located in butiá city, in the central depression of rio grande do sul state. it was used an randomized blocks experimental design, with 7 treatments and 4 replications. the treatments consisted of the following rootstoks: rangpur lime (c. limonia.), 'volkameriana' lemon (c. volkameriana.), 'flying dragon' trifoliata orange (poncirus trifoliata), 'caipira' orange (c. sinensis), 'troyer' citrange (c. sinensis x p. trifoliata), 'sunki' tangerine (c. sunki.) and 'swingle' citrumelo (c. paradisi x p. trifoliata). the parameters evaluated were: number of fruits and leaves with citrus canker lesions per plant and at two previously selected and marked branches per plant, at different times . the results revealed that the 'swingle' citrumelo and 'flying dragon' rootstocks induced the highest productivity index and, the lowest incidence of citrus canker disease on leaves and fruits. 'rangpur' lime and 'volkameriana' lime rootstocks, promoted a heavy crop load, however, showed higher susceptibility to citrus canker disease.
Controle químico do cancro cítrico em plantas jovens sob manejo convencional e organico
Koller, Otto Carlos;Oliveira, Regina Beatriz Loss de;Nunes, Diego Soares;Dal Soglio, Fábio;Panzenhagen, Nestor Valtir;Sartori, Ivar Antnio;Manteze, Francisco;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000400001
Abstract: the objective of the present work was to evaluate the development of the citrus rootstock poncirus trifoliata, severity of citrus canker, caused by xanthomonas citri pv. citri and the control of this disease with copper sprays, in conventional and organic management systems, at the centro de forma??o da emater, located in montenegro, rio grande do sul. plants were artificially inoculated with the bacteria. to control citrus canker, different sources of copper as well as concentrations and number of sprays were tested. in the organic system the bordeaux mixture was applied while in the conventional system copper oxichloride was sprayed. plants trunk diameter, dry matter of the rootstocks and number of canker lesions on leaves and branches were evaluated in both systems. citrus canker incidence on the rootstocks was equally intense, and the seedlings development was similar in both systems, but the budded plants grew better at the conventional system. copper treatments were not effective in controlling citrus canker at the rootstocks due the high inoculum concentration. on the budded plants, with low inoculum concentration, both the bordeaux mixture and the copper oxichloride controlled the disease, and the better treatments were when 0.3% metallic copper was applied with interval of 14 days. to improve citrus canker control by bordeaux mixture on organic systems, there is a need of efficient control strategies of the citrus leaf miner.
Performance of 'Oneco' mandarin on six rootstocks in South Brazil
Gonzatto, Mateus Pereira;Kovaleski, Alisson Pacheco;Brugnara, Eduardo Cesar;Weiler, Roberto Luis;Sartori, Ivar Antnio;Lima, Jurandir Gon?alves de;Bender, Renar Jo?o;Schwarz, Sergio Francisco;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000400010
Abstract: the objective of this work was to assess the effect of six rootstocks on yield, fruit quality, and growth of 'oneco' mandarin during the first seven harvesting seasons, in butiá, rio grande do sul state, brazil. the rootstocks evaluated were: 'swingle' citrumelo (citrus paradisi × poncirus trifoliata), 'caipira' orange (c. sinensis), 'troyer' citrange (c. sinensis × p. trifoliata), 'rangpur' lime (c. limonia), 'volkamer' lemon (c. volkameriana), and 'flying dragon' trifoliata orange (p. trifoliata var. monstrosa). plants budded onto 'flying dragon' had the lowest vegetative development, which indicates the dwarfing characteristics of this rootstock, and had the highest mean production efficiency, despite low yield. plants grafted on 'volkamer' lemon and 'rangpur' lime had the highest alternate bearing. under the experimental conditions evaluated, the most adequate rootstocks for mandarin 'oneco' are 'swingle' citrumelo and 'troyer' citrange, regarding fruit yield and quality.
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