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| graham, william richard. |
| A study was carried out to determine the productivity of small holder irrigation in northwestern Nigeria. The objectives of this study were to evaluate the performance of small-scale irrigation systems in Nigeria using several performance indicators.On the average crop yields (mean; 3657.4 kg ha-1) for wheat fell within the lower range of expected yields reported for irrigated wheat. However, the farms studied produced fairly high yields (mean; 535.6 kg ha-1). This may be attributed to the resilience of the small-holder farmers and access to subsidized inputs.In terms of output per cropped area, the rice farms gave better results (mean; 2635.9 US$ ha-1) when compared to the wheat farms (mean; 1981.2 US$ ha-1). However, when considering output per unit... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop water productivity; Irrigation water management; Financial self sufficiency. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6385 |
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| Santos,Jaqueline Jesus Santana dos; Pêgo,Rogério Gomes; Couto,Beatriz Rodrigues Monteiro; Bueno,Mateus Marques; Carvalho,Daniel Fonseca de. |
| ABSTRACT Water management and meteorological conditions during the cropping phase play an essential role in maintaining the commercial quality of cut flowers. This study evaluates water requirement, sensitivity to water deficit, and commercial quality of gladiolus ‘Amsterdam’ produced with automated irrigation in different growing periods. The experimental design was in randomized blocks with five replicates and consisted of the growing period factors (winter/spring 2018 and autumn/winter 2019) and the irrigation level factors (45% - L1, 60% - L2, 80% - L3, and 100% - L4 of crop water requirement). An automatic irrigation controller was used for irrigation management. At the harvest point, we evaluated the stems for the diameter, number of flowers, spike... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gladiolus x grandiflorus Hort.; Irrigation water management; Degree-days; Protected cultivation.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100242 |
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| Oliveira,Marcelo S. de; Carvalho,Daniel F. de; Gomes,Daniela P.; Pereira,Fernandes A. C.; Medici,Leonardo O.. |
| ABSTRACT This study aimed to evaluate the production of cut sunflower in response to different water volumes and substrates, composed of soil and coconut fiber. Two simultaneous experiments were conducted in greenhouse, located in the Horticulture Sector of the Federal Rural University of Rio de Janeiro (UFRRJ), Seropédica - RJ, Brazil (22º 48’ S, 43º 41’ W and altitude of 33 m), between April and June 2016. Water was applied by an Simplified Irrigation Controller (SIC), allowing the application of different volumes (33, 67 and 133% of retention capacity of substrate) in comparison to the control treatment (100%). The substrates used were 1/3 of coconut fiber and 2/3 of soil (v/v) (Experiment 1), and 2/3 of coconut fiber and 1/3 of soil (Experiment 2). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helianthus annuus L.; Irrigation water management; Ornamental plant. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200859 |
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