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| Registros recuperados: 1.187 | |
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| Pigozzo, Ana Tereza Jordão; UNESP; Lenzi, Ervim; UEM; Luca Júnior, Jorge de; UNESP; Scapim, Carlos Alberto; UEM; Vidigal Filho, Pedro Soares; UEM; Costa, Antônio Carlos Saraiva da; UEM. |
| A avaliação da disponibilidade de micronutrientes pela aplicação de lodo de esgoto foi realizada em campo, para uma safra de milho, em um Latossolo Vermelho distrófico, LVd, de textura média. O delineamento experimental foi de blocos casualizados, com os tratamentos em esquema de parcelas subdivididas, no tempo, sorteados, na parcela, seis doses de lodo de esgoto e, nas subparcelas, as cinco épocas de coleta de solo, com quatro repetições. O lodo de esgoto foi aplicado e incorporado na superfície (0-20 cm). Foram determinados os micronutrientes Fe, Mn, Cu e Zn, nas amostras de solo, e das plantas de milho. No solo, foram extraídas as amostras com solução de DTPA (ácido dietilenotriaminopentaacético) e nas plantas, mediante a digestão nitro-perclórica. A... |
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Palavras-chave: 5.01.00.00-9 Agronomia lodo de esgoto; Disponibilidade de micronutrientes; Milho; Solo tropical. sewage sludge; Micronutrient availability; Maize; Tropical soil. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5320 |
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| Detomini, Euro Roberto; USP; Massignan, Luiz Fernando Druzina; USP; Libardi, Paulo Leonel; USP; Dourado Neto, Durval; USP. |
| O objetivo deste trabalho é caracterizar o consumo hídrico do genótipo DKB 390 em condições adequadas de irrigação, tanto para situações de suprimento suficiente quanto para subótimo de nitrogênio. Valores de coeficiente de cultura são também apresentados para diferentes fases, para o primeiro caso, no intuito de prover subsídios teóricos para orçamento de água à cultura e para o manejo da irrigação durante o ciclo. Um experimento de campo foi conduzido durante a estação principal de cultivo, avaliando-se biomassa, área foliar, umidade do solo, dados climatológicos e transmitância de luz, permitindo derivar o balanço hídrico, o consumo hídrico e a eficiência de uso da água. O genótipo mencionado requer por volta de 600 mm para a obtenção de elevadas... |
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Palavras-chave: 5.01.00.00-9 Agronomia Zea mays; Evapotranspiração; Nitrogênio; Biomassa; KC; Milho Zea mays; Evapotranspiration; Nitrogen; Biomass; Kc; Maize. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/379 |
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| BAKO, TANKO; MAMAI, EZEKIEL AMBO; ISTIFANUS, AKILA BARDEY. |
| The aim of the study was to assess the effects of groundnut shells on soil properties, growth and yield of maize. The study was carried out in Jalingo, Taraba State, North-Eastern Nigeria in July, 2019. Treatments in the study were four doses of groundnut shells (0.0, 2.5, 5.0 and 7.5 t ha-1); arranged in a randomized complete block design, replicated four times. Each plot was 2.0 m × 2.0 m with 0.5 m gap between the plots and replicates. Crushed groundnut shells were applied on a dry matter basis at the rates of 0, 2.5, 5.0 and 7.5 t ha-1 28 days before planting maize. Seeds were planted on prepared land treated with crushed groundnut shells. Soil properties were determined at harvest, maize growth parameters were determined at 50% flowering and maize... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Groundnut shell; Incorporation Rates; Maize; Organic. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7211 |
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| Afzalinia, Sadegh; Dehghanian, Sayed Ibrahim. |
| Objective of this study was to evaluate the interaction effect of conservation tillage and irrigation methods on the soil properties, crop yield and water productivity in wheat-maize cropping system. A split plot experimental design with three replications was used to conduct this study in Fars province, Iran. Surface irrigation, drip tape irrigation, and sprinkler irrigation were considered as main plots, and no-tillage, reduced tillage, and conventional tillage were considered as sub plots. Results showed that surface irrigation had the maximum wheat yield on average and the maximum maize yield was obtained from drip tape irrigation on average; while, tillage methods had no significant effect on crops yield. Results also indicated that the maximum water... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop residue; Maize; Irrigation systems; Tillage methods; Water use; Wheat. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7017 |
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| Moretti de Souza, Jorge Luiz; de Oliveira, Cibelle Tamiris; Kreutz Rosa, Stefanie Lais; Yoiti Tsukahara, Rodrigo. |
| Crop growth models are abstract tools that represent a real system, being a simple and important technology to develop studies aiming to improve the yields of the most agricultural crops, like the maize in Brazil. The objective of this study was to analyze the sensitivity of the main AquaCrop model input parameters, as well as their responses in maize yield estimation, in Parana State, Southern Brazil. The analyses were performed with the genotype 30R50YH, 2014/15 harvest, planted on April 11, 2014. The parameters analyzed refer to crop, soil and soil management. The parameters were modified individually, maintaining the others fixed. With the results, the Sensitivity Index (SI) was calculated, which allowed the identification of the most sensitive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Modeling; Mathematical models; Sensitivity analysis; Maize; Zea mays. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7541 |
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| Alwan, salih kadhim. |
| The effect of thresher machines on maize , Cadiz cultivar was studied based on some technical indicators. Two types of machines (Maize thresher local M.T.L and Maize thresher MGI.Ty60) were tested at three velocity cylinder threshing of 200,250 and 300rpm and three ranges of grain moistures of 15%, 17% and 19%. The experiments were carried out in a factorial experiment under complete randomized design with three replications. The results showed that the Maize thresher local M.T.L machine was significantly better than the Maize thresher MGI.Ty60 machine in all studied conditions. The results showed a production process of 1.196 and 1.147 t\h, power consumption of 11.361 and 12.234 kW, cracked grain percentage of 4.024% and 4.374%, broken maize... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize; Moisture content; Thresher velocity; Cadiz cultivar; Thresher .. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5029 |
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| El-Fouly, Mohamed Mostafa; Shaaban, Samir Hosni. |
| A field experiment was carried out in Kafer El Kadera village at El–Monofia Governorate, during 5 consecutive years, 2010–2014, to test the effects of NPK and balanced fertilization on the yield and its components, and distribution of nutrients in different parts of maize (var.30K8).There was a significant increase of the number of leaves/plant, the length of cob, the number of rows in the cob and the number of grains in the row as a result of treated plants with NPK according to soil testing plus foliar application of micronutrients by 34.18, 27.94, 32.182, and 33.43%, respectively.There was also a significant increase in the chilling % rate, weight of 100 grains and yield of grain / plant, yield /ton/ha by 16.52, 35.39, 68.40, and 72.92%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize; NPK fertilization; Nutrients distribution; Irrigated agriculture. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5463 |
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| Pereyda-Hernández,Juan; Hernández-Morales,Javier; Sandoval-Islas,J. Sergio; Aranda-Ocampo,Sergio; de León,Carlos; Gómez-Montiel,Noel. |
| La mancha de asfalto del maíz es importante en el trópico de México por su impacto en el rendimiento. Se detectaron los agentes causales Phyllachora maydis Maubl., Monographella maydis Müller & Samuels y Coniothyrium phyllachorae Maubl., en el Valle de Mochitlán y otros Municipios del Estado de Guerrero. La enfermedad causó pérdidas del 55.1 % de la producción. Ochenta y un híbridos y 25 variedades de polinización libre de maíz evaluadas en esta zona contra este complejo de fitopatógenos no escaparon a la infección; sin embargo, los híbridos H-513×CML47, HEIixH-H-513 y H-513×CM374 exhibieron 7.29, 7.35 y 7.95 % de severidad, y fueron los más tolerantes. H-513 fue consistente en sus atributos de tolerancia, y su progenie representó 77 % de los 22... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coniothyrium phyllachorae; Monographella maydis; Phyllachora maydis; Genetic and chemical control; Maize. |
| Ano: 2009 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000500006 |
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| MARTINS,KARLA V.; DOURADO-NETO,DURVAL; REICHARDT,KLAUS; FAVARIN,JOSÉ L.; SARTORI,FELIPE F.; FELISBERTO,GUILHERME; MELLO,SIMONE C.. |
| ABSTRACT Decision support for nutrient application remains an enigma if based on soil nutrient analysis. If the crop could be used as an auxiliary indicator, the plant nutrient status during different growth stages could complement the soil test, improving the fertilizer recommendation. Nutrient absorption and partitioning in the plant are here studied and described with mathematical models. The objective of this study considers the temporal variation of the nutrient uptake rate, which should define crop needs as compared to the critical content in soil solution. A uniform maize crop was grown to observe dry matter accumulation and nutrient content in the plant. The dry matter accumulation followed a sigmoidal model and the macronutrient content a power... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize; Fertilizer rate estimation; Nutrient content; Nutrient partition. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000200705 |
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| Jama,Bashir; Van Straaten,Peter. |
| Phosphorus deficiency affects around 80% of the acid soils of western Kenya, but fertilizer use is limited due to high prices. This paper explores the potential of local phosphate rocks (PR) as a remedy within the context on an integrated soil fertility management approach. A promising phosphate rock is Minjingu PR (MPR, Tanzania), a sedimentary/biogenic deposit which contains about 13% total P and 3% neutral ammonium citrate (NAC) soluble P. On-farm trials in P-deficient soils in western Kenya demonstrate MPR to be as effective as triple superphosphate (TSP, 20% P) at equal P rates. The benefits are most pronounced with the integration of agroforestry technologies that improve soil fertility. Besides Minjingu PR, Busumbu PR from Uganda (BPR) is... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizers; Maize; Improved fallows; Tithonia; East Africa. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000400012 |
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| Vigliocco,A.; Bonamico,B.; Alemano,S.; Miersch,O.; Abdala,G.. |
| In the present paper we study the possible biological relevance of endogenous jasmonic acid (JA) and exogenous salicylic acid (SA) in a plant-microbial system maize-virus. The virus disease "Mal de Río Cuarto" is caused by the maize rough dwarf virus - Río Cuarto. The characteristic symptoms are the appearance of galls or "enations" in leaves, shortening of the stem internodes, poor radical system and general stunting. Changes in JA and protein pattern in maize control and infected plants of a virus-tolerant cultivar were investi-gated. Healthy and infected-leaf discs were collected for JA measurement at different post-infection times (20, 40, 60 and 68 days). JA was also measured in roots on day 60 after infection. For SDS-PAGE protein analysis, leaf... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Maize; Virus disease; Jasmonic and salicylic acids. |
| Ano: 2002 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452002000300007 |
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| LEITAO,LOUIS; MAORET,JEAN-JOSÉ; BIOLLEY,JEAN-PHILIPPE. |
| We quantified the ozone impact on levels of Zea mays L. cv. Chambord mRNAs encoding C4-phosphoenolpyruvate carboxylase (C4-PEPc), ribulose-l,5-bisphosphate carboxylase/oxygenase small and large subunits (Rubisco-SSU and Rubisco-LSU, respectively) and Rubisco activase (RCA) using real-time RT-PCR. Foliar pigment content, PEPc and Rubisco protein amounts were simultaneously determined. Two experiments were performed to study the ozone response of the 5th and the 10th leaf. For each experiment, three ozone concentrations were tested in open-top chambers: non-filtered air (NF, control) and non-filtered air containing 40 (+40) and 80 nL L-1 (+80) ozone. Regarding the 5th leaf, +40 atmosphere induced a loss in pigmentation, PEPc and Rubisco activase mRNAs.... |
| Tipo: Journal article |
Palavras-chave: Carboxylase; Maize; MRNA; Ozone; Rubisco activase. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200005 |
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| Souza,José Roberto Pinto de; Guimarães,Maria Fátima de; Muller,Marcelo Marques Lopes; Santos,Carlos Henrique dos. |
| The objective of the experiment was to identify the morphological alterations in corn genotypes in response to aluminum toxicity in the soil. A complete randomized block design with five replications was used. The a factorial scheme was composed of two corn genotypes (C525M - tolerant, and HS701B - sensitive) and two neutralization levels (0% and 100% of aluminum saturation). The evaluations were performed at six leaf and 10-11 leaf growth stages, emergence of the "stigma-style", and the physiological maturity. The presence of toxic aluminum didnt significantly reduce diameter and height of stem, leaf area, dry matter of aerial parts, total dry matter and yield. Stem diameter, leaf area, dry matter of root, dry matter of aerial parts, total dry matter and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant physiology; Maize; Soil acidity; Plant growth. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400010 |
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| Xu,Hongwen; Lu,Yan; Zhu,Xiancan. |
| ABSTRACT To investigate the effect of arbuscular mycorrhiza fungi on maize growth, osmoregulation substances and photosynthetic physiology, a popular maize variety ZD 958 was measured under potted condition. Arbuscular mycorrhiza (AM) symbiosis promoted plant growth, and enhanced plant height, leaf length, mean leaf width and dry weight. Higher soluble sugar and protein, but lower proline concentrations were detected in AM seedlings than corresponding non-AM seedlings. Quantum yield of PSII photochemistry and potential photochemical efficiency increased by arbuscular mycorrhiza fungi, meanwhile, AM plants had lower primary fluorescence but higher maximal fluorescence and variable fluorescence than non-AM plants. AM enhanced apparent quantum efficiency,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arbuscular mycorrhiza; Maize; Osmotic adjustment; Light response curve. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100435 |
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| Rezende,G.L.; Logullo,C.; Meyer,L.; Machado,L.B.; Oliveira-Carvalho,A.L.; Zingali,R.B.; Cifuentes,D.; Galina,A.. |
| In mammals, hexokinase (HK) is strategically located at the outer membrane of mitochondria bound to the porin protein. The mitochondrial HK is a crucial modulator of apoptosis and reactive oxygen species generation. In plants, these properties related to HK are unknown. In order to better understand the physiological role of non-cytosolic hexokinase (NC-HK) in plants, we developed a purification strategy here described. Crude extract of 400 g of maize roots (230 mg protein) contained a specific activity of 0.042 µmol G6P min-1 mg PTN-1. After solubilization with detergent two fractions were obtained by DEAE column chromatography, NC-HK 1 (specific activity = 3.6 µmol G6P min-1 mg PTN-1 and protein recovered = 0.7 mg) and NC-HK 2. A major purification... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydrophobic interaction chromatography; Maize; Mitochondrial hexokinase; Non-cytosolic hexokinase; Purification. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000900003 |
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| Registros recuperados: 1.187 | |
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