|
|
|
|
|
| Yosoff,Siti Fairuz; Mohamed,Mahmud Tengku Muda; Parvez,Anwar; Ahmad,Siti Hajar; Ghazali,Farinazleen Mohd; Hassan,Hamizah. |
| Leafy vegetables such as lettuce grown under different production systems may accumulate different concentrations of nitrate which may reach to the levels potentially toxic to humans. Moreover, nitrate accumulation varies in various plant parts and physiological age of the plant. Therefore, to determine the effect of production system and harvesting stage on nitrate accumulation and quality of butterhead lettuce, a study was conducted considering two lettuce production systems namely hydroponic and organic, and four different harvesting stages such as 35, 38, 41 and 44 days after transplanting (DAT). The experimental design was complete randomized design (CRD) with four replications. Hydroponic and organic systems performed similar in terms of yield,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydroponic; Organic; Harvesting time; Nitrate content; Butterhead lettuce. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300322 |
| |
|
|
| Tapia,Maria Luisa; Caro,José Marcelo. |
| The quality of lettuce (Lactuca sativa) seedlings is closely dependent on the substrate and the management practice during the transplant to the hydroponic system. This seed bed process may affect the normal development of the seedlings by affecting the post-transplanting period, potentially causing root stress, influencing establishment and even leading to seedling loss. An important criterion when choosing either a single or mixed substrate is the ability to provide for both growth and establishment of the seedlings in the hydroponic system. The main objective of this study was to evalúate the effect of granulated rockwool substrate (Agrolan, Compañía IndustrialEl Volcán S.A., Santiago, Chile), expanded perlite A6 (Harbolite Chile Ltda., Santiago,... |
| Tipo: Journal article |
Palavras-chave: Hydroponic; Lactuca sativa; NFT-modified hydroponic; Seedling bed; Substrate; Transplant stress. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300007 |
| |
|
|
| Rojas Velázquez, Angel Natanael. |
| La información y tecnologías para el cultivo hidropónico de perrito (Antirrhinum majus L.) en invernadero es limitada y requiere mayor conocimiento e investigación para el adecuado manejo del cultivo. En el presente estudio se utilizó un material de verano (Grupo IV) serie Potomac cv. Rose, para determinar los efectos del potencial osmótico (PO) en la solución nutritiva (-0.036, -0.054, -0.072, -0.090 y -0.108 MPa) en el contenido de biomasa y calidad comercial, análisis de crecimiento, absorción y extracción nutrimental, durante en cultivos de invierno y verano. En general las diferentes variables evaluadas, biomasa aérea, vida de florero y días a cosecha se vieron afectados por los tratamientos de PO y por las estaciones de crecimiento. La... |
|
Palavras-chave: Análisis de crecimiento; Absorción; Extracción; Hidroponía; Invernaderos; Growth analysis; Absorption; Extraction; Hydroponic; Greenhouse; Doctorado; Fruticultura. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/237 |
| |
|
|
| Rojas Velázquez, Angel Natanael. |
| La información y tecnologías para el cultivo hidropónico de perrito (Antirrhinum majus L.) en invernadero es limitada y requiere mayor conocimiento e investigación para el adecuado manejo del cultivo. En el presente estudio se utilizó un material de verano (Grupo IV) serie Potomac cv. Rose, para determinar los efectos del potencial osmótico (PO) en la solución nutritiva (-0.036, -0.054, -0.072, -0.090 y -0.108 MPa) en el contenido de biomasa y calidad comercial, análisis de crecimiento, absorción y extracción nutrimental, durante en cultivos de invierno y verano. En general las diferentes variables evaluadas, biomasa aérea, vida de florero y días a cosecha se vieron afectados por los tratamientos de PO y por las estaciones de crecimiento. La... |
|
Palavras-chave: Análisis de crecimiento; Absorción; Extracción; Hidroponía; Invernaderos; Growth analysis; Absorption; Extraction; Hydroponic; Greenhouse; Doctorado; Fruticultura. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/237 |
| |
|
| |
|
|
| Stertz,Sônia Cachoeira; Espírito Santo,Ana Paula do; Bona,Cleusa; Freitas,Renato João Sossela de. |
| Attempts to meet produces market demand are not always followed by research reports showing the impact of novel, intensive cropping systems on the environment, human and animal health, and eventual chemical and structural changes of plants. This work carries a comparative evaluation of the morphology and anatomy of cherry tomato fruits obtained from organic, conventional and hydroponic cropping systems. Fruits were collected at the free market in the greater Curitiba, Paraná, Brazil. For each culture method, 50 fruits their weight, diameter and volume measured. For the anatomical analysis, samples of the pericarp of ten fruits were excised and embedded in glycol methacrylate; 6-mm cuts were then obtained, stained with toluidine blue, and mounted on... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Morphology; Organic; Hydroponic; Conventional. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300015 |
| |
|
|
|
