EFFECTS OF SALINITY ON TOMATO IN A CLOSED SYSTEM
Makaleler > Tam Makale · 2009
Yazarlar: Tunali Ulaş, İSMAİL HAKKI TÜZEL, Yüksel TÜZEL, Gölgen Bahar ÖZTEKİN
Acta Horticulturae, AHCI İndekslerine Giren Dergi, Uluslararası, Emerging Sources Citation Index (ESCI), 2009, cilt 807, ss 457-462
DOI: 10.17660/actahortic.2009.807.65
Özet
<p><span style="font-family: arial, verdana, sans-serif; font-size: medium;">This research was carried out in an unheated PE tunnel during autumn and spring seasons of 2006 and 2007 to determine the response of tomato to different EC levels of nutrient solution in closed system. Tomato (cv. Durinta) plants were grown in cocopeat with a plant density of 3.5 plants m</span><sup style="font-family: arial, verdana, sans-serif;">-2</sup><span style="font-family: arial, verdana, sans-serif; font-size: medium;">. Plant root volume was 6 liters per plant. Plants were fed with a complete nutrient solution at the electrical conductivity levels of (1) 2.0 (control), (2) 4.0 and (3) 6.0 dS m-1. Salinity level of the nutrient solution was increased three weeks after planting by NaCl. Irrigation was based on indoor solar radiation level of 2 MJ m</span><sup style="font-family: arial, verdana, sans-serif;">-2</sup><span style="font-family: arial, verdana, sans-serif; font-size: medium;">. Irrigation water volume was determined by leaching ratio which was kept around 25% in control treatment (LF</span><sub style="font-family: arial, verdana, sans-serif;">1</sub><span style="font-family: arial, verdana, sans-serif; font-size: medium;">) and the same amount of solution was applied to the other treatments. In LF</span><sub style="font-family: arial, verdana, sans-serif;">2</sub><span style="font-family: arial, verdana, sans-serif; font-size: medium;"> treatments nutrient solution was increased by 30% of LF</span><sub style="font-family: arial, verdana, sans-serif;">1</sub><span style="font-family: arial, verdana, sans-serif; font-size: medium;">. Recirculating solution was replaced if the EC level was found to exceed the initially set level by two units for each treatment. Total yield, harvested fruit number, average fruit weight, fruit size and water consumption were determined. Additionally, crop coefficients were developed on a daily basis for growing season. The results showed that fruit yield and water consumption of tomato plants decreased dramatically with the increase of salinity. The highest yield was obtained from the control treatment in both seasons (10.6 kg m</span><sup style="font-family: arial, verdana, sans-serif;">-2</sup><span style="font-family: arial, verdana, sans-serif; font-size: medium;"> in autumn, 9.1 kg m</span><sup style="font-family: arial, verdana, sans-serif;">-2</sup><span style="font-family: arial, verdana, sans-serif; font-size: medium;"> in spring); however higher yield and water consumption were obtained in LF</span><sub style="font-family: arial, verdana, sans-serif;">2</sub><span style="font-family: arial, verdana, sans-serif; font-size: medium;"> treatments in both growing seasons.</span><br></p>