Browsing by Author "Kucukyumuk, Cenk"

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Determination of Plant-Pan Coefficients for Field-Grown Eggplant (Solanum Melongena L.) Using Class a Pan Evaporation Values
(Elsevier, 2006) Ertek, Ahmet; Sensoy, Suat; Kucukyumuk, Cenk; Gedik, Ibrahim
This study was conducted to determine the most suitable plant-pan coefficient for eggplant, using pan evaporation values, in field conditions. Application of irrigation water was based on cumulative class A pan evaporation within the irrigation intervals. Irrigation treatments consisted of one irrigation interval (11: 7 day) and five plant-pan coefficients (K(cp)1: based on percent crop canopy closure; K(cp)2: 0.50; K(cp)3: 0.70; K(cp)4: 0.90; K(cp)5: 1.10). Average irrigation values for each treatment varied from 372 to 689 mm, average evapotranspiration values ranged from 420 to 689 mm and eggplant fruit yield ranged from 10.11 to 21.14 tonnes ha(-1). The highest total and early fruit yield was obtained from the K(cp)4 and K(cp)3 treatments, respectively. Seasonal yield response factor (Ky) was 0.60. E-t/E-pan ratios for each treatment varied from 0.18 to 1.32. In addition, irrigation levels substantially affected yield (P < 0.001) and fruit number (P < 0.01). A significant correlation between irrigation water volume and plant vegetative growth traits, and between plant water consumption and fruit yield, were found. Thus, in irrigation programming, the Kcp4 plant-pan coefficient is recommended for field-grown eggplant. (c) 2006 Elsevier B.V. All rights reserved.
Irrigation Frequency and Amount Affect Yield and Quality of Field-Grown Melon (Cucumis Melo L.)
(Elsevier, 2007) Sensoy, Suat; Ertek, Ahmet; Gedik, Ibrahim; Kucukyumuk, Cenk
This study was conducted to determine the most suitable irrigation frequency and quantity for field-grown melon. Irrigation quantities were determined based on pan evaporation (E-pan) from a screened Class-A pan. Four different irrigation treatments employing two different irrigation intervals (11: 6 days; 12: 12 days) and two different plant-pan coefficients (K(cp)1: 0.60; K(cp)2: 0.90) were tested. Total irrigation quantities (I-r), plant water consumption (E,), and melon yields varied from 405 to 549 mm, 481-637 mm and 18.0-32.4 Mg ha(-1), respectively. The highest yield was obtained from the treatment employing the greatest frequency and quantity of irrigation (I1K(cp)2). Most fruit traits were significantly affected by differences in irrigation treatment. (c) 2006 Elsevier B.V. All rights reserved.