COMPARISON OF THE EFFECT OF SURFACE AND SUBSURFACE DRIP IRRIGATION ON WATER USE, GROWTH AND PRODUCTION OF A GREENHOUSE TOMATO CROP

D. Bidondo, R. Andreau, S. Martinez, M. Garbi, W. Chale , G. Cremaschi
Surface drip irrigation is a common practice in greenhouse tomato production to achieve efficiency in the use of water and obtain better crops. However, in recent years some researches have developed to study the advantages of subsurface drip irrigation. The aim of this work was to compare water use, growth and yield of a greenhouse tomato crop, using surface and subsurface drip irrigation systems. The essay was carried out in La Plata, Buenos Aires, Argentina (34°55’ S, 57°57’ W). Plants of the Griffy tomato hybrid, of indeterminate growth habit (Enza Zaden®) were transplanted to a parabolic greenhouse on July 25th, 2007. Two irrigation treatments were performed: T) surface drip irrigation and T1) subsurface drip irrigation, placing the drip tape 15 cm under the soil surface. Daily average temperature, relative humidity and solar radiation were recorded into the greenhouse; volumes of water added by irrigation and obtained by drainage were measured in both treatments obtaining Crop Evapotranspiration (ETc); Reference Evapotranspiration (ETo) was estimated by Penmann and Monteith and Thornthwaite methods and crop coefficient (Kc) was calculated by ETc/ETo. During the crop cycle, phonological data were registered as well as stem length and diameter, and yield. The experiment was conducted under a complete randomized block design with three replications, and data were studied by variance analysis. There were no significant differences in phenological response, stem size or yield among irrigation treatments, but plants under subsurface irrigation showed a trend to present higher values in all the considered variables. These plants also showed a better use of water, with a significant increase in ETc and Kc. Subsurface drip irrigation is a proper practice to achieve a good production in greenhouse tomato crops, doing a better use of irrigation water.
Bidondo, D., Andreau, R., Martinez, S., Garbi, M., Chale , W. and Cremaschi, G. (2012). COMPARISON OF THE EFFECT OF SURFACE AND SUBSURFACE DRIP IRRIGATION ON WATER USE, GROWTH AND PRODUCTION OF A GREENHOUSE TOMATO CROP . Acta Hortic. 927, 309-313
DOI: 10.17660/ActaHortic.2012.927.36
https://doi.org/10.17660/ActaHortic.2012.927.36
crop evapotranspiration, reference evapotranspiration, drainage, crop coefficient, yield, plant development
English

Acta Horticulturae