Consulta: subjectFacets:"Available phosphorus"
Registros recuperados: 11
Data/hora: 12/06/2024 16:24:22

Yield and must composition of grapevines subjected to phosphate fertilization in Southern Brazil
Provedor de dados: 86
Autores: Schmitt,Djalma Eugênio; Borghezan,Marcelo; Ambrosini,Vítor Gabriel; Comin,Jucinei José; Trapp,Talita; Brunetto,Gustavo.
Abstract: The objective of this work was to evaluate the yield and must composition of 'Cabernet Sauvignon' and 'Chardonnay' grapevines subjected to phosphorus applications to a soil from a high-altitude region of Southern Brazil, during three crop seasons. Experiments 1 and 2 were carried out in 'Cabernet Sauvignon' and 'Chardonnay' commercial vineyards, respectively, in the municipality of Água Doce, located in the Midwestern region of the state of Santa Catarina. The soil from the two vineyards was classified as a Typic Humicryept. The used source of P was triple superphosphate (45% P2O5). From 2011 to 2013, at flowering, a total of 0, 10, 20, 40, and 80 kg ha-1 P2O5 were applied in the crown projection area, to the soil surface, without incorporation,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Available phosphorus; 'Cabernet Sauvignon'; 'Chardonnay'; High altitude.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000102803

Calcium and available phosphorus levels for laying hens in second production cycle
Provedor de dados: 89
Autores: Pelicia,K; Garcia,EA; Faitarone,ABG; Silva,AP; Berto,DA; Molino,AB; Vercese,F.
This experiment studied the effect of four calcium (3.0, 3.5, 4.0, and 4.5%) and four available phosphorus levels (0.25, 0.30, 0.35, and 0.40%) in the diet of semi-heavy commercial layers after molting. Hisex Brown® layers between 90 and 108 weeks of age were distributed in a completely randomized experimental design with a 4x4 factorial arrangement with 16 treatments of five replicates of eight birds each. mortality, egg production, feed intake, egg mass, average egg weight, calcium and phosphorus intake, feed conversion ratio (per dozen eggs and per kg eggs), eggshell percentage and thickness, eggshell strength, eggshell weight per surface area (ESWSA), yolk percentage and color, albumen percentage, albumen and yolk heights, and blood and excreta calcium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Egg quality; Nutritional requirements; Post-molting; Semi-heavy layers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100007

Brachiaria as a Cover Crop to Improve Phosphorus Use Efficiency in a No-till Oxisol
Provedor de dados: 90
Autores: Janegitz,Moniki Campos; Souza,Elialdo Alves de; Rosolem,Ciro Antonio.
ABSTRACT Oxidic soils are phosphorus drains in soil; hence, P availability is a limiting factor in tropical, weathered Oxidic soils. It has been shown that some brachiarias grown as cover crops may increase soil available P to subsequent crops. The objective of this study was to evaluate soil P cycling and availability, as well as the response of soybean to soluble and natural reactive phosphates as affected by ruzi grass (Urochloa ruziziensis, R. Germ. and C.M. Evrard, Crin) grown as a cover crop in a no-till system. Experimental treatments consisted of the presence or absence of ruzi grass in combination with a control (0.0 P) and soluble and reactive rock phosphate broadcast on the soil surface in the winter (80 kg ha-1 P2O5), plus three rates of P...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Phosphorus use efficiency; Cover crops.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100536

Forms of phosphorus in an oxisol under different soil tillage systems and cover plants in rotation with maize
Provedor de dados: 90
Autores: Carvalho,Arminda Moreira de; Bustamante,Mercedes Maria da Cunha; Almondes,Zayra Azeredo do Prado; Figueiredo,Cícero Célio de.
Phosphorus fractions play a key role in sustaining the productivity of acid-savanna Oxisols and are influenced by tillage practices. The aim of this study was to quantify different P forms in an Oxisol (Latossolo Vermelho-Amarelo) from the central savanna region of Brazil under management systems with cover crops in maize rotation. Three cover crops (Canavalia brasiliensis, Cajanus cajan (L.), and Raphanus sativus L.) were investigated in maize rotation systems. These cover crops were compared to spontaneous vegetation. The inorganic forms NaHCO3-iP and NaOH-iP represented more than half of the total P in the samples collected at the depth of 5-10 cm during the rainy season when the maize was grown. The concentration of inorganic P of greater availability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic matter; Available phosphorus; Phosphorus sequential fractionation; Organic phosphorus; Inorganic phosphorus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000300029

Energy and protein levels in diets containing phytase for broilers from 22 to 42 days of age: performance and nutrient excretion
Provedor de dados: 96
Autores: Nagata,Adriano Kaneo; Rodrigues,Paulo Borges; Alvarenga,Renata Ribeiro; Zangeronimo,Márcio Gilberto; Rodrigues,Kênia Ferreira; Lima,Gustavo Freire Resende.
This study was conducted in order to evaluate the influence of different levels of metabolizable energy and crude protein in diets formulated according to the ideal protein concept with phytase supplementation on performance and nutrient excretion of broilers from 22 to 42 days age. It was used 1,500 Coob lineage broilers at 22 days of age and with initial weight of 833 ± 7g, distributed in completely randomized design in a 3 × 3 + 1 factorial scheme composed of three levels of correct apparent metabolizable energy (2,950; 3,100 and 3,250 kcal/kg), three levels of crude protein (14, 16 and 18%) and a control treatment, totaling ten treatments with six repetitions of 25 birds each. All diets, with the exception of the control, were supplemented with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Addictive; Available phosphorus; Enzyme; Ideal protein; Metabolizable energy; Pollutants.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000800014

Bioavailability and poultry fecal excretion of phosphorus from soybean-based diets supplemented with phytase
Provedor de dados: 96
Autores: Martins,Bianca Almeida Brandão; Borgatti,Laura Maria de Oliveira; Souza,Luiz Waldemar de Oliveira; Robassini,Simi Luiza Durante Aflalo; Albuquerque,Ricardo de.
Five hundred and four 1-day-old Cobb broiler chickens were randomly allotted to 18 treatments and fed a semi-purified basal diet (4 g/kg total phosphorus) supplemented with 2 levels of supplemental P (0.5 or 1 g/kg) during 21 days to evaluate performance and bone mineralization; to assess the relative bioavailability of P (RBP) in wheat meal (WM) and roasted (RS) or extruded soybean meal (ES), with or without phytase (0 or 750 ftu/kg diet), using dicalcium phosphate (DC) as standard; and to estimate phosphorus excretion. Weight gain (WG), feed intake (FI), feed to gain ratio (FG), and tibia ash weigh (AW) were assessed. For each source, the RBP was calculated by the slope ratio method, when tibia ash weight was regressed on P ingested. Ingested and fecal P...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Bone ash; Broiler; Phosphorus excretion; Phytate; Wheat meal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000300005

Phosphorus availability of rock phosphates as compared with feed-grade phosphates for swine
Provedor de dados: 96
Autores: Souza,Luiz Waldemar de Oliveira; Moretti,Anibal de Sant'Anna; Tucci,Fernanda Marcussi; Souza,Nedilse Helena de; Leal,Paulo Ademar Martins; Anzai,Nelson Haruo.
One hundred ninety two swine were used in a trial to assess the relative bioavailability of phosphorus (RBP) in six phosphate sources. Phosphates were three feed grade phosphates (FP), two made in Brasil, and one USA made, and three rock phosphate samples (RP) originated from two mines sites in Brasil, and one mine site in Israel. Levels of calcium, phosphorus and fluorine in RP were 29, 12 and 1.7% (RP source 1), 33, 14 and 1.4% (RP source 2), and 30, 14 and 3.6% (RP source 3), respectively. Pigs were fed a corn-soybean meal basal diet (18% CP, 0.95% Lys, 0.75% Ca, 0.37% P) or the basal diet with 0.15% P from a standard purified grade calcium phosphate (SP), or with 0.15% P from experimental FP or RP. Each diet was fed to six pen replicates of four pigs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Bone strength; Performance; Piglets.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000100012

การปรับปรุงดินก่อนปลูกอ้อยโดยใช้ประโยชน์จากวัชพืชในธรรมชาติ และวัสดุหรือพืชบำรุงดินชนิดต่างๆ
Provedor de dados: 106
Autores: Santimaitree Gonkhamdee; Prasit Jaisil; Wanwipa Kaewpradit Polpinit; Tassanee Wongphet.
Tipo: PhysicalObject
Palavras-chave: Sugarcane; Sugarcane production; Soil improvement; Weed; Green manure; Upland rice; Crotalaria juncea; Filter cake; Soil amendment; Fallow; Soil management; Organic matter; Total nitrogen; Available phosphorus; อ้อย; การปลูกอ้อย; การปรับปรุงดิน; วัชพืช; พืชบำรุงดิน; ข้าวไร่; ปอเทือง; วัสดุปรับปรุงดิน; กากตะกอนหม้อกรอง; การจัดการดิน; อินทรียวัตถุ; ปริมาณไนโตรเจนทั้งหมด; ปริมาณฟอสฟอรัสที่เป็นประโยชน์; การเพิ่มความอุดมสมบูรณ์ดิน; วิธีการที่เหมาะสม; การลดต้นทุนการผลิต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5823

Organic acids production by rhizosphere microorganisms isolated from a Typic Melanudands and its effects on the inorganic phosphates solubilization
Provedor de dados: 109
Autores: Serna-Posso *,Eduardo José; Sánchez-de Prager,Marina; Cisneros-Rojas,Carlos Adolfo.
Abstract: It has been established that organic acid secretion by rhizosphere microorganisms is one of the mechanisms to solubilize the phosphorus (P) attached to insoluble mineral compounds in soil. This action is an important biotechnological alternative, especially in those soils where high fixation of this nutrient occurs, a very common situation in the tropics. This research evaluated the ability performed by five bacterial and five fungal isolates from Typic Melanudands soil to produce organic acids and generate available phosphorus from insoluble P sources. Given these concerns, the selected microorganisms were replicated for 7 days in liquid medium Pikovskaya (PVK) modified sources tricalcium phosphate (P-Ca), aluminum phosphate (P-Al) and iron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Insoluble P sources; Phosphorus dynamics; Penicillium ochrochloron.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000200241

Carcass characteristics of broilers at 42 days receiving diets with phytase in different energy and crude protein levels
Provedor de dados: 64
Autores: Nagata,Adriano Kaneo; Rodrigues,Paulo Borges; Alvarenga,Renata Ribeiro; Zangeronimo,Márcio Gilberto; Donato,Daniella Carolina Zanardo; Silva,José Humberto Vilar da.
The aim of this study was to evaluate carcass characteristics and quality of breast meat after the inclusion of phytase in broiler diets with different levels of apparent metabolizable energy (AMEn) corrected for nitrogen and reduced crude protein (CP) supplemented with essential amino acids following the concept of ideal protein. A total of 1,500 Cobb broilers from 22 to 42 days (initial weight of 833 ± 7 g and final weight of 2741 ± 48 g) were distributed in completely randomized design in a factorial 3x3+1 experiment (three levels of AMEn - 2,950; 3,100 and 3,250 kcal/kg - and three levels of CP - 14, 16 and 18% - and an additional treatment - control without phytase, with 3,100 kcal/kg EMAn, 19.2% PB and 0.4% available phosphorus), in six replications...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Dietary addictive; Enzyme; Ideal protein.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000300020

PHOSPHORUS FRACTIONS AND AVAILABILITY IN A HAPLIC PLINTHOSOL UNDER NO-TILLAGE SYSTEM IN THE BRAZILIAN CERRADO
Provedor de dados: 64
Autores: Rotta,Leonardo Ricardo; Paulino,Helder Barbosa; Anghinoni,Ibanor; Souza,Edicarlos Damacena de; Lopes,Guilherme; Carneiro,Marco Aurélio Carbone.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phosphorus adsorption; Available phosphorus; Tillage system.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000300216