Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional de Colombia
2014
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=180330697013 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Determination of an efficient irrigation schedule for the cultivation of rose cv. Freedom under greenhouse conditions in Colombia Jhon Jairo Arévalo Javier Enrique Vélez S. Diego Sebastiano Intrigliolo Agrociencias soil moisture ornamental plants Evapotranspiration leaf water potential An experiment on rose (Rosa sp.) cv. Freedom was performedin a greenhouse on the Bogota Plateau, Colombia, to identify anefficient irrigation regime for this crop. The tested treatmentswere based on three irrigation doses, applying different fractions of the estimated crop evapotranspiration (ETc), calculatedusing a class A evaporation tank: i) 100% ETc (ETc100), ii)80% ETc (ETc80) and iii) 70% ETc (ETc70). During the entireexperimental period, from mid-May to early September, thecrop had a constant production of floral stems. In all of theirrigation treatments, the soil and plant water status weremonitored using tensiometers and the midday stem waterpotential, respectively (Ψstem). In the fully irrigated roses, the actual water use was determined using a drainage lysimeter in order to obtain the local crop coefficients (Kc) by means of a water balance. From June to August, the obtained monthly Kc values varied between 1.10 and 1.26. Compared to the ETc100 treatment, 14.5 and 21.8% less water was applied in treatments ETc80 and ETc70, respectively. Despite this fact, no statistically significant differences were found among the treatments for rose production or quality. Finally, in the more irrigated roses, tight relationships between the stem water potential and vapor pressure deficit were obtained. The reported base-line equations can be used for predicting the optimum rose plant water status, depending on the environmental conditions. Overall, the reported results can be used for an efficient irritation schedule for rose crops under greenhouse conditions, using the local Kc and direct determinations of plant water status corrected for the evaporative demand. 2014 artículo científico 0120-9965 https://www.redalyc.org/articulo.oa?id=180330697013 en http://www.redalyc.org/revista.oa?id=1803 Agronomía Colombiana application/pdf Universidad Nacional de Colombia Agronomía Colombiana (Colombia) Num.1 Vol.32