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| Registros recuperados: 413 | |
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| Fraga, I.; Flores, E. R.; Reyes, R.; Llanes, Y.. |
| Con el objetivo de evaluar el efecto sobres el crecimiento y la supervivencia, de diferentes densidades de siembra de tilapia roja en jaulas de diferentes volúmenes (4, 6 y 16 m3) se desarrollaron tres ciclos de engorde en la bahía de Casilda, provincia Sancti-Spíritus. La selección del sitio se realizó a partir de una red de cinco estaciones muestreadas en lluvia y seca para determinar los parámetros físico, químicos, batimétricos y turbidez. Los alevines se adaptaron al agua de mar en tanques de 12 m3, con flujo de agua marina (1.4 - 2.8 L/segundo) durante 24 horas con supervivencia de 96%. Al emplear densidades de 73 y 184 alevines/m3 en jaulas de 6 m3, no se observaron diferencias significativas (p> 0.05) en el crecimiento y supervivencias... |
| Tipo: Journal Contribution |
Palavras-chave: Food; Seawater; Stock density; Cages; Environmental impact; Yield. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4334 |
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| Gonçalves,Paulo de Souza; Scaloppi Júnior,Erivaldo José; Martins,Maria Alice; Moreno,Rogério Manoel Biagi; Branco,Roberto Botelho Ferraz; Gonçalves,Elaine Cristine Piffer. |
| The objective of this work was to evaluate the performance of 15 clones of the IAC 500 series of Hevea brasiliensis, developed at Instituto Agronômico (IAC), over a 12-year period, in the northwest region of São Paulo State, Brazil. The 15 new clones evaluated are primary clones obtained from selected ortets within half-sib progenies. The clone RRIM 600, of Malaysian origin, was used as the control. Dry rubber yield performance over a four-year period, mean girth at the tenth year, girth increment before and during tapping, thermal properties of the natural rubber produced and other characters of the laticiferous system were evaluated. Forty percent of the clones were superior in comparison to the control for yield. Clone IAC 500 recorded the highest yield... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Bark thickness; Brown bast; Vigor; Yield. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001200009 |
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| Ribas,Giovana Ghisleni; Streck,Nereu Augusto; Duarte Junior,Ary José; Ribeiro,Bruna San Martin Rolin; Pilecco,Isabela Bulegon; Rossato,Ioran Guedes; Richter,Gean Leonardo; Bexaira,Kelin Pribs; Pereira,Vladison Fogliato; Zanon,Alencar Junior. |
| Abstract: The objective of this work was to model, in the SimulArroz model, the three flood-irrigated rice (Oryza sativa) cultivars currently most grown in the state of Rio Grande do Sul, Brazil. The experiments to calibrate and validate the model were conducted in the municipalities of Cachoeirinha, Santa Maria, Uruguaiana, Santa Vitória do Palmar, and Cachoeira do Sul during four crop seasons. The number of leaves, phenology, aboveground dry matter biomass, and yield of each cultivar were evaluated. The results showed a slight overestimate of the R1, R4, and R9 stages; however, overall, the SimulArroz model had a good performance in simulating rice phenology for the three studied genotypes. Furthermore, the model had a reasonable accuracy in simulating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Mathematical model; Yield. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000101001 |
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| Gonzalez,Norma; Eyherabide,Juan Jose; Barcelonna,Maria Ignacia; Gaspari,Alfredo; Sanmartino,Silvina. |
| Two trials were performed in Balcarce, Argentina (37° 45' LS; 58° 18' LW) during 1993-94, to assess the effect of eight herbicides applied individually or in tank mixtures, on nodule number, nodule dry weight, seed yield and N percent in seed in soybean Asgrow 3205, inoculated with Bradyrhizobium japonicum CB 1809. Individual herbicides and doses in kg ha-1 of a.i. were metribuzin (0.48), acetochlor (0.90), metolachlor (1), flumioxazin (0.075), trifluralin (0.96), imazaquin (0.20), imazethapyr (0.10) and chlorimuron ethyl (0.0125). The mixtures were metribuzin+acetochlor (0.48+0.9), flumioxazin+acetochlor (0.075+0.9), imazaquin+acetochlor (0.2+0.9), metribuzin+metolachlor (0.48+1.92), and flumioxazin+ metolachlor (0.075+1.92). A control treatment without... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bradyrhizobium japonicum; Herbicides injury; Nitrogen fixation; Yield. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700008 |
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| Silva,Ana Maria Dias da; Gomes,Levy de Carvalho; Roubach,Rodrigo. |
| The objective of this work was to evaluate the effect of pond management on fish feed, growth, yield, survival, and water and effluent quality, during tambaqui (Colossoma macropomum) juvenile production. Fish were distributed in nine 600 m² earthen ponds, at a density of 8 fish per m²; the rearing period was 60 days. Three different pond management were applied: limed and fertilized (LimFer), limed (Lim), and natural (Nat). Fish were fed with a commercial ration containing 34% crude protein three times daily. There were no significant differences in fish growth or yield. Three main items found in tambaqui stomach were insect, zooplankton and ration, without a significant difference among treatments in proportion. Alkalinity, hardness, and CO2 were greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colossoma macropomum; Growth; Yield; Diet; Environmental impact. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000500017 |
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| Mattos,Lorenna Alves; Amorim,Edson Perito; Amorim,Vanusia Batista de Oliveira; Cohen,Kelly de Oliveira; Ledo,Carlos Alberto da Silva; Silva,Sebastião de Oliveira e. |
| The objective of the present work was to characterize banana accessions from the Germplasm Bank at Embrapa Mandioca e Fruticultura Tropical (Brazil), using agronomical, physical and physicochemical characteristics of fruit and simple sequence repeats (SSR) markers. Twenty-six accessions were analyzed, in which high genetic variability was found, especially for the agronomical characters number of fruit and weight of bunch. Accessions with high contents of carotenoids (diploid 'Jaran'), polyphenols (triploid 'Caipira' and tetraploid 'Teparod') and vitamin C (diploid 'Tuugia' and an unknown triploid AAA) in the fruit were identified. Thirteen microsatellite primers revealed an average of 7.23 alleles, which showed high variability. A dendrogram was prepared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Musa; Functional properties; Fruit quality; Hybrids; Yield. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000200005 |
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| Oliveira,Paula Duarte de; Marodin,Gilmar Arduino Bettio; Almeida,Gustavo Klamer de; Gonzatto,Mateus Pereira; Darde,Daniel Chamorro. |
| Abstract: The objective of this work was to evaluate the effect of shoot heading and of hand thinning in different development stages of flowers and fruits on the fruit production and quality of 'BRS Kampai' peach (Prunus persica) trees. The experiment was performed during three crop years, under the conditions of the “Depressão Central” region in the state of Rio Grande do Sul, Brazil, and the treatments were: T1, heading of half of the mixed shoot; T2, heading of one third of the mixed shoot; T3, flower thinning in the pink bud stage; T4, thinning at full bloom; T5, thinning of fruit with 5 mm; T6, thinning of fruit with 20 mm; and T7, no thinning or heading (control). Fruit production and quality were evaluated. Plants with no thinning were more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Prunus persica; Fruit quality; Yield. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101006 |
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| Teodoro,Adenir Vieira; Carvalho,Hélio Wilson Lemos de; Barros,Inácio de; Carvalho,Luciana Marques de; Martins,Carlos Roberto; Soares Filho,Walter dos Santos; Girardi,Eduardo Augusto; Passos,Orlando Sampaio. |
| Abstract: The objective of this work was to evaluate the effect of nine rootstocks on 'Jaffa' sweet orange (Citrus sinensis) for its vegetative, productive, and qualitative traits, and for its susceptibility to three pest mites (Eutetranychus banksi, Tetranychus mexicanus and Phyllocoptruta oleivora). The following parameters were evaluated: vegetative growth, yield, physiochemical characteristics of fruit, and density of pest mites. 'Sunki Tropical' mandarin conferred high cumulative yields whereas 'Orlando' tangelo and 'Rugoso Vermelho' lemon imparted bigger fruit with low brix, and less acidity to 'Jaffa'. Indio and 'Riverside' citrandarins induced more acid fruit of smaller sizes, as well as low-cumulated yields and canopy volumes. Also, the 'Cravo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Juice content; Yield; Phytophagous mites. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000102800 |
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| Spehar,Carlos Roberto; Santos,Roberto Lorena de Barros. |
| Twenty six breeding lines, selected from individual plant progenies of hybrids among varieties Amarilla de Marangani, Blanca de Junín, Chewecca, Faro 4, Improved Baer, Kancolla, Real, and Salares-Roja, had their agronomic characters evaluated, in Planaltina, DF, Brazil (15º36'S and 47º12'W), 1,000 masl, in randomized complete blocks, on a Ferralsol, previously limed and fertilized. Grain yield was positively associated with plant height, inflorescence length and diameter, and plant cycle. Genetic gain can be attained by selection based in these characters for commercial production of quinoa in tropical regions. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chenopodium quinoa; Breeding line; Selection; Yield; Cerrado. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600012 |
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| Rodrigues,Maria Júlia da Silva; Andrade Neto,Romeu de Carvalho; Araújo Neto,Sebastião Elviro de; Soares Filho,Walter dos Santos; Girardi,Eduardo Augusto; Lessa,Lauro Saraiva; Almeida,Ueliton Oliveira de. |
| Abstract: The objective of this work was to select rootstocks, based on the agronomic characters and fruit quality of the 'Valência' orange tree. The evaluated rootstocks were: the 'Cleópatra' mandarin; the TSKFL x CTTR-013, LVK x LCR-038, TSKC x CTQT 1439-004, LVK x LVA-009, TSK x TRENG-256 ('Indio' citrandarin) hybrid genotypes; the 'Santa Cruz' Rangpur lime; and the TSKFL x CTC-25-002, and TSKC x CTSW-038 hybrids. The experiment was installed in 2010 and evaluated from 2013 to 2017. The parameters plant height, canopy volume, yield efficiency, scion:rootstock ratio, survival percentage, and drought tolerance were evaluated in 2017. The yield average of five harvests was estimated, as well as the annual production per plant and the accumulated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus; Poncirus trifoliata; Fruit quality; Rangpur lime; Western Amazon; Yield. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102704 |
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| Gonzatto,Mateus Pereira; Kovaleski,Alisson Pacheco; Brugnara,Eduardo Cesar; Weiler,Roberto Luis; Sartori,Ivar Antônio; Lima,Jurandir Gonçalves de; Bender,Renar João; Schwarz,Sergio Francisco. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus reticulata; Alternate bearing; Fruit quality; Yield. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400010 |
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| Feiden,Aldi; Signor,Altevir; Boscolo,Wilson Rogério; Reidel,Adilson; Coldebella,Anderson; Signor,Arcangelo Augusto; Klein,Sidnei. |
| The objective of this work was to evaluate the morphometric and allometric relations of Iguaçu surubim (Steindachneridion melanodermatum) cultivated in net cages. One hundred and twenty specimens were cultivated at a density of 50 fish per square meter in three 6 m³ net cages. Fish were fed three times a day with commercial feed. Thirty fish were evaluated at 60, 120, 180, and 360 days of cultivation as to the variables: total body, head, clean trunk, viscera, skin, and fin weight; total, standard, and head length; and head and body height. The Iguaçu surubim shows later development of the clean trunk and early development of the other body parts. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Steindachneridion melanodermatun; Body weight; Development; Processing; Weight class; Yield. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800055 |
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| Tecchio,Marco Antonio; Moura,Mara Fernandes; Teixeira,Luiz Antonio Junqueira; Pires,Erasmo José Paioli; Leonel,Sarita. |
| The objective of this work was to evaluate the influence of rootstocks and pruning times on yield and on nutrient content and extraction by pruned branches and harvested bunches of 'Niagara Rosada' grapevine in subtropical climate. The rootstocks 'IAC 766', 'IAC 572', 'IAC 313', 'IAC 571-6', and '106-8 Mgt' were evaluated. Treatments consisted of a combination between five rootstocks and three pruning times. At pruning, fresh and dry matter mass of branches were evaluated to estimate biomass accumulation. At harvest, yield was estimated by weighing of bunches per plant. Branches and bunches were sampled at pruning and at harvest, respectively, for nutrient content analysis. Nutrient content and dry matter mass of branches and bunches were used to estimate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca; Vitis vinifera; Biomass accumulation; Mineral nutrition; Yield. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500340 |
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| Azuara Hern ández,L; Silos Espino,H; Perales Segovia,C; Gómez Leyva,JF; Alpuche Solís,AG; Macias Valdez,LM. |
| The objective of this study was to compare the yield and genetic relationships between two Perla garlic selections, obtained by individual selection of cloves, and commercial varieties and cultivars adapted to diverse regions of Mexico (which did not have a selection process). Varieties with fewer cloves showed higher yields. Coreano and California produced 20 ton/ha (fresh weight) and Perla selections between 17-19 ton/ha (fresh weight). Six primers of the series OPB were tested for genetic characteriza-tion and OPB-17 was selected. With the amplified DNA fragments, a binary matrix was generated; afterwards, a dissimilarity matrix and dendrogram were developed. High genetic diversity was found among all varieties, which were separated into two groups... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RAPDs; Allium sativum; Selection; Yield. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100007 |
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| Hernández-Cruz,AE; Sánchez,E; Preciado-Rangel,P; García-Bañuelos,M L; Palomo-Gil,A; Espinoza-Banda,A. |
| In the production of cotton (Gossypium hirsutum L.), nitrogen fertilization is one of the most costly crop practices, but important to reach high yields. However, high nitrogen (N) content in plants does not always translate into a high fibre production. One way of assessing the efciency of the N fertilizer is through the enzymatic activity of the nitrate reductase (NR). This is a key enzyme in N assimilation, whose activity is regulated by a number of endogenous and exogenous factors that determine yield. The aim of this study was to assess the efect of N fertilization on yield, fibre quality, biomass, and NR enzymatic activity in vivo in the cotton variety Fiber Max 989. The evaluated application rates were 0, 50, 100, and 150 kg/ha of N, using urea as a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum L; Nitrogen assimilation; Yield. |
| Ano: 2015 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000200026 |
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| REIS,M.R.; MELO,C.A.D.; RAPOSO,T.P.; AQUINO,R.F.B.A.; AQUINO,L.A.. |
| ABSTRACT The presence of weeds in commercial fields of cabbage may interfere directly and indirectly on yield and on the quality of the commercial product. Therefore, the satisfactory production depends on a successful control of weeds. Because of the limited availability of herbicides registered in Brazil for cabbage crop in addition to the lack of information in the literature, the objective of this work was to evaluate the selectivity of herbicides to cabbage. The herbicides S-metolachlor (1,740 and 768 g ha-1), oxyfluorfen (240 and 96 g ha-1), flumioxazin (40 and 40 g ha-1) clomazone (720 and 360 g ha-1) and oxyfluorfen + flumioxazin (240 + 20 and 96 + 20 g ha-1) were applied before and after transplant of seedlings, besides the S-metolachlor +... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicides tolerance; Weed management; Yield. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100226 |
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| SHAH,R.H.; BALOCH,M.S.; ZUBAIR,M.; KHAN,E.A.. |
| ABSTRACT: The present research work was undertaken to find out the phytotoxic effects of different concentrations of aqueous extracts of leaves, stems and root of milkweed (Calotropis procera) in the Agronomic Research Area of Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa (KPK), Pakistan during 2013-14 and 2014-15. The treatments consisted of different concentrations of aqueous leaf, stem and root extracts (10, 20, 30 and 40%) of milkweed, which were compared with tap water (control). The results showed that the reduction of all studied parameters, including weeds, growth and yield of wheat was proportional to the concentration of aqueous extracts of milkweed in use. The level of inhibition was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytotoxicity; Calotropis procera; Aqueous extracts; Weed density; Growth; Yield; Wheat. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100279 |
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| Registros recuperados: 413 | |
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