Consulta: creatorFacets:"Kölln,Oriel Tiago"
Registros recuperados: 6
Data/hora: 02/06/2024 07:35:57

Danos do complexo broca-podridão à produtividade e à qualidade da cana-de-açúcar fertirrigada com doses de nitrogênio
Provedor de dados: 86
Autores: Pannuti,Luiz Eduardo da Rocha; Baldin,Edson Luiz Lopes; Gava,Glauber José de Castro; Kölln,Oriel Tiago; Cruz,Juliana Cristina Sodário.
O objetivo deste trabalho foi avaliar o efeito da fertirrigação nitrogenada sobre os danos causados pelo complexo broca-podridão à produtividade e à qualidade da cana-de-açúcar. O experimento foi realizado em campo, em delineamento de blocos ao acaso, com quatro repetições e cinco doses de N (0, 50, 100, 150 e 200 kg ha-1), aplicadas por irrigação por gotejamento. Quantificaram-se as seguintes variáveis: número de orifícios causados por Diatraea saccharalis (Lepidoptera: Crambidae); número de internódios infectados com a podridão-vermelha; percentagem de incidência de podridão-vermelha; produtividade de colmos; e teor de açúcar. Em laboratório, foram avaliados a atratividade e o consumo de fragmentos de colmos por lagartas de quarto instar, em testes com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colletotrichum falcatum; Diatraea saccharalis; Saccharum; Atratividade; Broca-da-cana-de-açúcar; Podridão-vermelha.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000400005

Decision-making on the optimum timing for nitrogen fertilization on sugarcane ratoon
Provedor de dados: 63
Autores: Castro,Sérgio Gustavo Quassi de; Rossi Neto,João; Kölln,Oriel Tiago; Borges,Bernardo Melo Montes Nogueira; Franco,Henrique Coutinho Junqueira.
ABSTRACT: Low efficiency of nitrogen from fertilizers is a major concern worldwide, threatening the sustainability of sugarcane production. The N use efficiency (NUE) by sugarcane can be improved by adopting better fertilizing management practices, reducing environmental impacts. This work evaluated the effects of varying N rates and time of application on stalks and sugar yield in ratoon harvested early in the crop season. The experimental design was a randomized block in a 2 × 4 factorial design and a control (no N) with five replications, including two application times (45 or 90 DAH – days after harvest) and four N rates (50, 100, 150, or 200 kg N ha−1). The time of N fertilizer application promoted differences in stalk yield, as the cumulative yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: N fertilization; Green cane; Sugarcane yield; Economical rate.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001300237

Root extracts of Bracchiaria humidicola andSaccharum spontaneum to increase N use by sugarcane
Provedor de dados: 63
Autores: Kölln,Oriel Tiago; Franco,Henrique Coutinho Junqueira; Ferreira,Danilo Alves; Vargas,Vitor Paulo; Castro,Saulo Augusto de Quassi; Cantarella,Heitor; Caldana,Camila; Trivelin,Paulo Cesar Ocheuze.
ABSTRACT Retaining the mineral N in the form of NH4+ in the soil for a lengthy period is desirable for reducing losses. Furthermore, there is evidence that sugarcane prefers NH4+-N in place of NO3−-N. This study aimed firstly, to evaluate the potential of root extracts of Bracchiaria humidicola andSaccharum spontaneum, in contrast with the DCD (Dicyandiamide) inhibitor, to increase absorption of N by plants fertilized with ammonium sulfate, and secondly, to quantify the emission of N2O fluxes with the use of this inhibitor. The experiment was developed in a glasshouse in an entirely randomized design where four treatments were applied: AS) ammonium sulfate (control); AS+DCD) ammonium sulfate associated with dicyandiamide; AS+BCH) ammonium sulfate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonium; Nitrate; Dicyandiamide; Nitrification; Nitrous oxide.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000100034

Residual recovery and yield performance of nitrogen fertilizer applied at sugarcane planting
Provedor de dados: 63
Autores: Franco,Henrique Coutinho Junqueira; Otto,Rafael; Vitti,André Cesar; Faroni,Carlos Eduardo; Oliveira,Emídio Cantídio de Almeida; Fortes,Caio; Ferreira,Danilo Alves; Kölln,Oriel Tiago; Garside,Alan Leslie; Trivelin,Paulo Cesar Ocheuze.
ABSTRACTThe low effectiveness of nitrogen fertilizer (N) is a substantial concern that threatens global sugarcane production. The aim of the research reported in this paper was to assess the residual effect of N-fertilizer applied at sugarcane planting over four crop seasons in relation to sugarcane crop yield. Toward this end three field experiments were established in the state of São Paulo, Brazil, during February of 2005 and July of 2009, in a randomized block design with four treatments: 0, 40, 80 and 120 kg ha−1 of N applied as urea during sugarcane planting. Within each plot, a microplot was established to which 15N-labeled urea was applied. The application of N at planting increased plant cane yield in two of the three sites and sucrose content at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum; Urea; Nitrogen fertilization; Isotopic technique.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000600528

Assessment of sugarcane trash for agronomic and energy purposes in Brazil
Provedor de dados: 63
Autores: Franco,Henrique Coutinho Junqueira; Pimenta,Maria Teresa Borges; Carvalho,João Luís Nunes; Magalhães,Paulo Sérgio Graziano; Rossell,Carlos Eduardo Vaz; Braunbeck,Oscar Antonio; Vitti,André Cesar; Kölln,Oriel Tiago; Rossi Neto,João.
Due to new possibilities for using sugarcane (Saccharum spp.) trash for electricity generation, and the production of 2nd generation ethanol and others chemicals, the interest for its recovery has increased. However, the question of how much trash can be removed from sugarcane field still needs to be clarified. This study evaluated the amount of dry matter, nutrients content, structural compounds and efficiency of the enzymatic hydrolysis of the hydrothermal pretreated materials for tops and dry leaves in samples from sugarcane varieties. Tops and dry leaves present differences in nutrients content and moisture. Therefore, the amount of trash to be collected should not be simply based on percentages, but also should take into account the different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Enzymatic hydrolysis; Sugarcane crop residues.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000500004

Interaction between N-fertilizer and water availability on borer-rot complex in sugarcane
Provedor de dados: 53
Autores: Pannuti,Luiz Eduardo da Rocha; Baldin,Edson Luiz Lopes; Gava,Glauber José de Castro; Silva,José Paulo Gonçalves Franco da; Souza,Efrain de Santana; Kölln,Oriel Tiago.
This study aimed to evaluate the effects of nitrogen availability in fertigation and rainfed management, as well as their interactions with the incidence of and damage caused by D. saccharalis and red rot in sugarcane. The experiment consisted of four treatments (0 and 150 kg ha–1 of N-fertilizer with irrigation; 0 and 150 kg ha–1 of N-fertilizer in rainfed management) in a randomized complete block design with four replications. The evaluated parameters were the number of holes and internodes with red rot per meter of cultivation, stalk yield and sugar content. In the laboratory (T = 25 ± 2 °C; R.H. = 70 ± 10%: 12:12-L:D), we evaluated the attractiveness and consumption of fragments of stalks from the different treatments for fourth instar larvae through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diatraea saccharalis; Irrigation; Red rot; Saccharum sp.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000100075