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FLORESCIMENTO E FRUTIFICA O DE MANGUEIRA COM USO DE PACLOBUTRAZOL, ETHEPHON E NITRATO DE CáLCIO
MENDON?A VANDER,A. NETO SEBATI?O ELVIRO DE,HAFLE OSCAR MARIANO,MENEZES JOSIVAN BARBOSA
Revista Brasileira de Fruticultura , 2001,
Abstract: Este trabalho objetivou testar diferentes doses de Paclobutrazol (PBZ), ethephon e nitrato de cálcio na indu o do florescimento e na produ o da mangueira (Mangifera indica L.) cv. Tommy Atkins, localizada no pomar didático da ESAM em Mossoró-RN, no ano de 1999/2000. O delineamento experimental utilizado foi em blocos casualizados, no esquema fatorial 2x2x3, assim distribuídos: T1 1000 mg.L-1 de PBZ+ 2% de nitrato de cálcio; T2 1000 mg.L-1 de PBZ + 2% de nitrato de cálcio + 1,0 mL.L-1 de ethephon; T3 1000 mg.L-1 de PBZ + 2% de nitrato de cálcio + 3,0 mL.L-1 de ethephon; T4 1000 mg. L-1 de PBZ + 3% de nitrato de cálcio; T5 1000 mg.L-1 de PBZ + 3% de nitrato de cálcio + 1,0 mL.L-1 de ethephon; T6 1000 mg.L-1 de PBZ + 3% de nitrato de cálcio + 3,0 mL.L-1 de ethephon ; T7 1500 mg.L-1 de PBZ + 2% de nitrato de cálcio; T8 1500 mg.L-1 de PBZ + 2% de nitrato de cálcio + 1,0 mL.L-1 de ethephon; T9 1500 mg.L-1 de PBZ + 2% de nitrato de cálcio + 3,0 mL.L-1 de ethephon; T10 1500 mg.L-1 de PBZ+ 3% de nitrato de cálcio; T11 1500 mg.L-1 de PBZ + 3% de nitrato de cálcio + 1,0 mL.L-1 de ethephon.L; T12 1500 mg.L-1 de PBZ + 3% de nitrato de cálcio + 3,0 mL.L-1 de ethephon, com 4 repeti es. A mangueira teve um maior florescimento (81,75%) com 2% de nitrato de cálcio e 1500 mg. L-1 de PBZ, o número de frutos por planta teve seu maior valor (86 frutos) com 3% de nitrato de cálcio e 1500 mg L-1 de PBZ e o peso do fruto foi maior (425,5g) na dosagem de 3mL.L-1 de ethephon. Os produtos aplicados n o diferenciaram entre si em rela o à produ o.
FLORESCIMENTO E FRUTIFICA??O DE MANGUEIRA COM USO DE PACLOBUTRAZOL, ETHEPHON E NITRATO DE CáLCIO
MENDON?A, VANDER;A. NETO, SEBATI?O ELVIRO DE;HAFLE, OSCAR MARIANO;MENEZES, JOSIVAN BARBOSA;RAMOS, JOSE DARLAN;
Revista Brasileira de Fruticultura , 2001, DOI: 10.1590/S0100-29452001000200012
Abstract: this work had the objective of testing distinct concentrations of paclobutrazol, ethephon and calcium nitrate to induce flowering in the production of the mango cv. tommy atkins, located in the didactic orchard of the superior school of agriculture of mossoró. the experiment was developped in the year of 1999/2000. a randomized experimental block design, was used in the factorial scheme 2x2x3; distributed in: t1 1000 mg.l-1 of pbz+ 2% calcium nitrate; t2 1000 mg.l-1 of pbz + 2% calcium nitrate + 1,0 ml.l-1 of ethephon; t3 1000 mg.l-1 of pbz + 2% calcium nitrate + 3,0 ml.l-1 of ethephon; t4 1000 mg.l-1 of pbz + 3% calcium nitrate; t5 1000 mg.l-1 of pbz + 3% calcium nitrate + 1,0 ml.l-1 of ethephon; t6 1000 mg.l-1 of pbz + 3% calcium nitrate + 3,0 ml.l-1 of ethephon; t7 1500 mg.l-1 of pbz + 2% calcium nitrate; t8 1500 mg.l-1 of pbz + 2% calcium nitrate + 1,0 ml.l-1 of ethephon; t9 1500 mg.l-1 of pbz.l + 2% calcium nitrate + 3,0 ml.l-1 of ethephon; t10 1500 mg.l-1 of pbz + 3% calcium nitrate, t11 1500 mg.l-1 of pbz + 3% calcium nitrate + 1,0 ml.l-1 of ethephon; t12 1500 mg.l-1 of pbz + 3% calcium nitrate + 3,0 ml.l-1 of ethephon, with 4 replications. the mango had a larger flowering (81.75% of fruits ) with 2% calcium nitrate and 1500 mg. l-1 of pbz, the number of fruits per plant was the highest (86 fruits) with 3% calcium nitrate and 1500 mg l-1 of pbz and the weight of the fruit was the heaviest (425,5g/fruit ) in the dosage of 3,0 ml.l-1 of ethephon. the applied products were not different among themselves in relation to the production.
Combina o do paclobutrazol, sulfato de potássio e etefon na indu o floral da mangueira cv. Tommy Atkins  [PDF]
José Algaci Lopes da Silva,Josynaria Araújo Neves
Comunicata Scientiae , 2011,
Abstract: Amongst the techniques used for the regulation of the vegetative growth of mango trees withthe purpose in floral induction, is common the arranged use of the substances Paclobutrazol,Potassium Sulfate and Ethephon. Under conditions of semi-arid tropic the precipitated techniquehas persuaded an abundant flower induction, however has produced inconsistent effects in theconditions of warm and rainy climate. With the purpose to study that combination in the growth eflowering of mango trees, variety Tommy Atkins, it was experimented in the mesorgion of TeresinaCity, State of Piauí, under conditions of humid tropic, using an experimental design of randomizedcomplete blocks, with an factorial arrangement 4 x 3: four Paclobutrazol doses (zero; 0.7; 1.0 and 1.3g of a.i. m-1 of diameter tree canopy) and three practices that combined applications of PotassiumSulfate (2%), Ethephon (240 ppm) on three periods of floral induction, 90, 105 and 120 days, to thestart of application of dormancy-breaking, which was counted from the Paclobutrazol application.Plants untreated produced only vegetative branches and the various products and periods ofapplications combinations tested showed low rates flowering and high rates of dormant buds.
Influence of Paclobutrazol and Ethephon on Vegetative Growth of Guava (Psidium guajava L.) Plants at Different Spacing  [cached]
Jaswinder Singh BRAR
Notulae Scientia Biologicae , 2010,
Abstract: To ascertain the growth retarding potential of Paclobutrazol (PBZ) and Ethephon on guava plants at different spacing viz 6×2 m, 6×3 m, 6×4 m and 6×5 m; both were applied at 500 ppm, 1000 ppm as a foliar spray. Investigation revealed that all treatments influence the vegetative growth of plants compared to untreated plants at all spacing levels. However, paclobutrazol considerably restrict the overall vegetative growth of trees. Stock and scion girth was found to be increased with ethephon treatments. The tree height and E-W tree spread was found to increased with increasing plant density. Similarly, trunk girth in terms of stock and scion girth was also increased with increase in plant spacing. Although, the PBZ 500 ppm markedly restrict the plant growth but it may be further investigated for managing the guava tree canopies under high density planting systems, taking the fruit quality and economic aspects into consideration.
Paclobutrazol no florescimento e na produ??o da mangueira 'Tommy Atkins'
Fonseca, Nelson;Castro Neto, Manoel Teixeira de;Ledo, Carlos Alberto da Silva;
Ciência e Agrotecnologia , 2004, DOI: 10.1590/S1413-70542004000400012
Abstract: efficient techniques for controlling the production time are important for the economical success in the mango cultivation. in this study, it was evaluated the flowering and production of mango fruit, variety tommy atkins, in response to the paclobutrazol application (pbz), either in the soil (2 ml of the active ingredient per plant), or on foliage at different doses (0.5, 1, 1.5 and 2 ml of a.i. per plant in single or two applications), under conditions of irrigated cultivation, in the semi-arid area of northeastern of brazil. the studied variables were percentile flowering, number of fruits, and production per plant, being appraised in three times after the application of the growth regulator (68 to 110, 131 to 179 and 190 to 216 days after, for the flowering of the plant; and 162 to 203, 256 to 287 and 327 to 337 days after, for the number and production of fruits for plant). the application of pbz in the soil determined percentile of flowering, number of fruits and production for plant superiors to the control (water to foliage) and to the treatments with pbz to foliage, besides anticipating the flowering of the plants. pbz to foliage, independent of the application number and used doses, didn't overcome the control significantly. applied pbz in the soil anticipated the flowering in 23 days, in relation to the control and to the treatments with pbz to foliage, in the second evaluation time.
Efeito do paclobutrazol em duas épocas de produ??o da mangueira
Mouco, Maria Aparecida do Carmo;Albuquerque, Jo?o Ant?nio Silva;
Bragantia , 2005, DOI: 10.1590/S0006-87052005000200008
Abstract: the growth regulators have been used as a practice to alter the mango phenologic cycle in order to forecast the harvest. with the aim to define doses and paclobutrazol (pbz) application forms, an experiment was carried out in itaberaba, state of bahia, brazil. two ways of application were tested, via soil and foliar, and two different paclobutrazol doses. it was found that pbz via soil, promotes flowering in mango trees in any season of the year, under tropical semi-arid conditions, but its efficiency are related to the maximum and minimum air temperatures at the time of bud break. the results showed that pbz is inefficient when applied via foliar.
Paclobutrazol e estresse hídrico no florescimento e produ??o da mangueira (Mangifera indica) 'Tommy Atkins'
Fonseca, Nelson;Castro Neto, Manoel Teixeira de;Ledo, Carlos Alberto da Silva;
Revista Brasileira de Fruticultura , 2005, DOI: 10.1590/S0100-29452005000100008
Abstract: the use of growth regulators and water stress are important practices for the induction of flowering and production of mango in tropical areas. flowering and fruit production of mango trees cv. tommy atkins were evaluated in semi-arid area of northeast brazil, in response to paclobutrazol applications (pbz) to the soil (2 ml of a.i./plant), under irrigation, and to the leaves in different doses (0.5 and 1 ml of a.i. in one applicaqtion and split into two fractions), without irrigation, besides the control (one foliar application of water followed by water stress). the variables were evaluated in three different times after the application of pbz (68 to 91, 131 to 179 and 190 to 216 days to the percentage of flowering per plant; and 180 to 203, 267 to 287 and 299 to 337 days to the number of fruits and production per plant. results indicated that the water stress imposed to the plants without pbz applications was as efficient in flowering induction and fruit production of mango trees as were the applications of pbz to the soil, using irrigation, and to leaves, without irrigation. the second evaluation time was superior to the first and third times in flowering and production per plant. the pbz application in soil advanced in 23 days the flowering of plant in the second time in relation to the application of water stress. the work proposes that the water stress has potential to flowering induction and may replace the stress caused by pbz application in mango trees under tropical semi-arid conditions.
INDU??O DO AMADURECIMENTO DE FRUTOS CíTRICOS EM PóS-COLHEITA COM A APLICA??O DE ETHEPHON
DOMINGUES, MARCIO CHRISTIAN SERPA;ONO, ELIZABETH ORIKA;RODRIGUES, JO?O DOMINGOS;
Revista Brasileira de Fruticultura , 2001, DOI: 10.1590/S0100-29452001000300021
Abstract: the present work was carried out on ib/unesp, botucatu-sp, with the objective to study the effect of postharvest application of ethephon on change peel color of sweet orange cv. 'hamlin' and 'baianinha'. the fruits was soaked in water solution of ethephon(2-chloroethyl fosfonic acid) plus 0,05% of extravon ( 25% alquil phenol poliglycoleter) the applied treatments were: t1- control (water); t2 ? ethephon ? 1000 mg.l-1 / 5 minutes soaked; t3 - ethephon ? 2000 mg.l-1 / 5 minutes soaked; t4 ? ethephon ? 3000 mg.l-1 / 5 minutes soaked; t5 ? ethephon ? 4000 mg.l-1 / 5 minutes soaked; t6 ? ethephon ? 1000 mg.l-1 / 10 minutes soaked; t7 - ethephon ? 2000 mg.l-1 / 10 minutes soaked; t8 ? ethephon ? 3000 mg.l-1 / 10 minutes soaked; t9 ? ethephon ? 4000 mg.l-1 / 10 minutes soaked. the experiment was set up in a split plot design, utilizing 4 replications and 9 treatments. after 72 hours, the experiment was evaluated by folowing variables: amount of chlorophyll skin, total soluble solids, texture and visual analysis with pictures. the results showed that ethephon reduced peel chlorophyll content on fruits in all treatments of ethephon, but hight rates like 4000 mg.l-1 started points of necrosis on skin. fruit quality was not adversely affected by all treatments. so it was concluded that the best rate was 1000 mg.l-1 to induce the decrease of peel chlorophyll content of 'hamlim' and 'baianinha' sweet orange.
Florescimento e frutifica??o de mangueira (Mangifera indica L.) Cv. Rosa promovidos por diferentes doses de paclobutrazol
Cardoso, Maria Gerolina Silva;S?o José, Abel Rebou?as;Viana, Anselmo Eloy Silveira;Matsumoto, Sylvana Naomi;Rebou?as, Tiyoko Nair Hojo;
Revista Brasileira de Fruticultura , 2007, DOI: 10.1590/S0100-29452007000200004
Abstract: efficient techniques as the floral induction allow the establishment of commercialization strategies for favorable periods of market and economical success in the cultivation of mango fruits. an experiment, was conducted in order to study the effect of different paclobutrazol doses (pbz) on the flowering and production of mango fruits cv. rosa. the experiment design used was formed by randomized blocks with four treatments with five replications. the treatments were composed of: t1-control (only water); t2- pbz- 0,40g a.i./m canopy; t3- pbz- 0,80g a.i./m canopy; and t4. pbz- 1,20g a.i./m canopy. the evaluation consisted of the following characteristics: flowering anticipation, number and fruits production per plant. the obtained results were submitted to regression analysis and dunnet test. it was observed a higher percentage of flowering and fruit production for t2 (0,40g) t3 (0,80g) and t4 (1,2g) in comparison to the control. the pbz treatment also anticipated flower initiation and fruit harvest, what means production out of season higher prices and more profitability.
INDU O DO AMADURECIMENTO DE FRUTOS CíTRICOS EM PóS-COLHEITA COM A APLICA O DE ETHEPHON
DOMINGUES MARCIO CHRISTIAN SERPA,ONO ELIZABETH ORIKA,RODRIGUES JO?O DOMINGOS
Revista Brasileira de Fruticultura , 2001,
Abstract: O presente experimento foi conduzido no Departamento de Botanica -- IB/Unesp, Botucatu-SP, com o objetivo de estudar o efeito da aplica o pós-colheita de Ethephon no desverdecimento de laranjas-doces (Citrus sinensis (L.) Osbeck) cultivar 'Hamlin' e 'Baianinha', consideradas cultivares precoces. Os frutos foram imersos por diferentes tempos em solu o aquosa de Ethephon mais 0,05% do adjuvante Extravon (25% de Alquilfenol - poliglicoléter). Os frutos foram colocados em caixas de madeira, sobre bancada, em temperatura ambiente, onde permaneceram por 72 horas. Os tratamentos utilizados foram os seguintes: T1- testemunha (água); T2 -- Ethephon -- 1000 mg.L-1 / 5 minutos de imers o; T3 - Ethephon -- 2000 mg.L-1 / 5 minutos de imers o; T4 -- Ethephon -- 3000 mg.L-1 / 5 minutos de imers o; T5 -- Ethephon -- 4000 mg.L-1 / 5 minutos de imers o; T6 -- Ethephon -- 1000 mg.L-1 / 10 minutos de imers o; T7 - Ethephon -- 2000 mg.L-1 / 10 minutos de imers o; T8 -- Ethephon -- 3000 mg.L-1 / 10 minutos de imers o; T9 -- Ethephon -- 4000 mg.L-1 / 10 minutos de imers o. O delineamento experimental adotado foi o de blocos ao acaso, com 9 tratamentos e 4 repeti es. Após 72 horas, o experimento foi avaliado através das seguintes variáveis: teor de clorofila da casca, teor de sólidos solúveis (0Brix) e textura dos frutos, além da análise visual com a utiliza o de fotografias. Com isso, verificou-se que houve influência do Ethephon no processo de mudan a da cor da casca de frutos cítricos em todos os tratamentos, diferenciado-se estatisticamente da testemunha, porém, na concentra o de 4000 mg.L-1, houve início de necrose em alguns pontos da casca dos frutos. Assim, pode-se concluir que a melhor concentra o foi a de 1000 mg.L-1 de Ethephon, para acelerar o processo de desverdecimento ou mudan a da colora o da casca de frutos de laranjas precoces cultivares 'Hamlin' e 'Baianinha'.
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