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| Registros recuperados: 15 | |
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| CEREZINI, P.; FAGOTTI, D. dos S. L.; KUWANO, B. H.; SOUZA, D. I.; PÍPOLO, V. C.; PIPOLO, A. E.; HUNGRIA, M.; NOGUEIRA, M. A.. |
| A fixação biológica de nitrogênio (FBN) é indispensável para a viabilidade da cultura da soja em termos econômicos e ambientais. Entretanto, a ocorrência de veranicos prejudica a cultura e a FBN. O objetivo desse trabalho foi avaliar aspectos nutricionais e fisiológicos em genótipos de soja com capacidade de manter a FBN em condições de restrição hídrica (30% CC), em comparação com a condição normal (70% CC). O experimento foi conduzido em delineamento inteiramente casualizado em esquema fatorial 5 × 2, com sete repetições, com as linhagens R01-581F, R01-416F, R02-1325, com capacidade de manter a FBN em condições de seca, e os padrões CD 215 e BRS 317, sob suprimento adequado de água (70% CC), ou sob restrição hídrica (30% CC) entre 45 e 55 dias.... |
| Tipo: Parte de livro |
Palavras-chave: Soja; Fixação de nitrogênio; Deficiência hídrica; Relação água-planta; Soybeans; Plant-water relations; Deficit irrigation; Nitrogen fixation. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/934623 |
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| Gava,Ricardo; Anselmo,Jefferson L.; Neale,Christopher M. U.; Frizzone,José A.; Leal,Aguinaldo J. F.. |
| ABSTRACT Planting density can influence the competitiveness among plants mainly by water, nutrients and solar radiation, directly affecting yield. The purpose of this study was to evaluate the productivity of different soybean cultivars at different planting populations under irrigated and rainfed conditions. The experiment was conducted during the 2014/15 growing season, under center pivot irrigation in Chapadão do Sul – MS, Brazil. The experimental design was randomized complete block design with split-plot, as follows: Irrigated and Rainfed (plots) x Six cultivars (subplots) x Three Plant Populations (sub-subplots) with 4 replications. The irrigation management was realized by Penman-Monteith-FAO method. The cultivars used were: NA 5909 RR, DM 5958... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant density; Irrigated Soybean; Deficit irrigation; Soybean Yield. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300441 |
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| MOREIRA, C. G.; SILVA, J. B. DA; MIRANDA, F. R. de; BEZERRA, M. A.; CABRAL, J. E. de O.; ROCHA, A. B. DA. S.; GUIMARÃES, V. B.. |
| O estudo objetivou determinar a produtividade, os custos, as receitas e a produtividade da água de irrigação (PAI) do coqueiro-anão irrigado por gotejamento e microaspersão, sob diferentes níveis de irrigação deficitária e secagem parcial do sistema radicular (PRD). |
| Tipo: Folhetos |
Palavras-chave: Irrigação deficitária; Produtividade da água de irrigação; Irrigation water productivity; Cocos Nucifera; Água de Irrigação; Produtividade; Deficit irrigation; Cocos (Arecaceae). |
| Ano: 2022 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1145483 |
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| Kahlaoui,B; Hachicha,M; Rejeb,S; Rejeb,M.N; Hanchi,B; Misle,E. |
| A field experiment on the effects of drip irrigation (DI) and subsurface drip irrigation (SDI) with saline water (6.57 dS m-1) on three tomato cultivars (Lycopersicon esculentum Mill., cvs. Rio Tinto, Rio Grande and Nemador) was carried out with the purpose to quantify physiological responses. The aim was to improve irrigation water management under saline conditions of Tunisia. The trial was established in a silt-clayey soil with three regimes of irrigation: 100 %, 85 % and 70 % of crop water requirement. Results evidenced a significant difference between the two irrigation systems for the three cultivars. Growth parameters such as leaf area, chlorophyll content and mineral composition of leaves, petioles, stems and roots were affected significantly by... |
| Tipo: Journal article |
Palavras-chave: Salt tolerance; Tomato; Localized irrigation; Deficit irrigation; Tunisia. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100007 |
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| Cruz,Eleandro Silva da; Medici,Leonardo Oliveira; Leles,Paulo Sérgio dos Santos; Ambrozim,Clodoaldo Spadeto; Souza,Wendell Luccas; Carvalho,Daniel Fonseca de. |
| ABSTRACT Optimization of the use of water and the possibility of using residues as substrate in the black pepper production chain can yield economic and environmental benefits. The objective of this study was to evaluate the biometric and physiological traits of black pepper plantlets (Piper nigrum L.), cv. Bragantina, at different irrigation levels and soilless substrates. Plantlets were grown for 120 days on three substrates [biosolid + crushed coconut fiber (3:1, by volume); biosolid + granitic rock powder (3:1, by volume); and biosolid + crushed coconut fiber + granitic rock powder (2:1:1, by volume)] and at five irrigation levels [36 % (very low); 55 % (low); 85 % (moderate); 100 % (well-irrigated); and 126 % of the reference irrigation level... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Piper nigrum L; Deficit irrigation; Potting mix; Biosolid; Granitic rock powder. |
| Ano: 2022 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162022000100601 |
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| Severini, Simone; Cortignani, Raffaele. |
| There is a growing policy pressure to reduce water use in agriculture when this generates sufficiently large environmental benefits and increases the well-being of other water users. Several analysis investigate farmers’ response to water policy by means of mathematical programming models including Positive Mathematical Programming (PMP). The originals PMP methods refer only to activities observed in the reference period. However, under the pressure of new water policies, farmers can adjust not only their cropping patterns but also the irrigation techniques they use. In particular, they could introduce water deficit irrigation crop techniques that were not profitable in past conditions. This paper proposes an extension of the Röhm and Dabbert approach... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Positive mathematical programming; Water policies; Deficit irrigation; Crop Production/Industries. |
| Ano: 2008 |
URL: http://purl.umn.edu/44010 |
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| Souza,Claudia Rita de; Bassoi,Luís Henrique; Lima Filho,José Moacir Pinheiro; Silva,Fabrício Francisco Santos da; Viana,Leandro Hespanhol; Dantas,Barbara França; Pereira,Maiane Santos; Ribeiro,Paula Rose de Almeida. |
| There is an increased demand for high quality winegrapes in the São Francisco Valley, a new wine producing area in Brazil. As the grape quality is closely linked to the soil water status, understanding the effects of rootstock and irrigation management on grapevine water relations is essential to optimize yield and quality. This study was carried out to investigate the effects of irrigation strategies and rootstocks on water relations and scion vigour of field-grown grapevines in Petrolina, Pernambuco state, Brazil. The cultivars used as scions are Moscato Canelli and Syrah, both grafted onto IAC 572 and 1103 Paulsen rootstocks. The following water treatments were used: deficit irrigation, with holding water after veraison; and partial root-zone drying,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L.; Partial rootzone drying; Deficit irrigation; Stomatal conductance. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000400002 |
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| Cui,Jintao; Shao,Guangcheng; Lu,Jia; Keabetswe,Larona; Hoogenboom,Gerrit. |
| ABSTRACT In areas where the supply of water for irrigation is limited, tomato production is often subject to drought stress. In order to investigate the drought sensitivity of tomato (Lycopersicon esculentum Mill.) yield and quality during different growth stages, field and pot experiments were conducted in a high tunnel in southern China during the 2013 and 2016 growing seasons. The experiments consisted of four treatments. Crops were drip-irrigated to 100 % of field capacity at all growth stages divided into treatment T1 (control) and the treatment group T2, T3 and T4 receiving half the amount of irrigation as T1 when the soil water content reached 70 % of field capacity, the vegetative phase (stage I) T2, the flowering and fruit development phase (stage... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Deficit irrigation; Sensitivity index; Irrigation management; High tunnel. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000200601 |
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| Registros recuperados: 15 | |
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