The influence of drip irrigation and the three ways of seedling production on the yields of watermelon cv. ‘Bingo’ was determined in field experiments carried out in the years 2005–2006 on a very light soil at Kruszyn Krajeński near Bydgoszcz. The experiments were run in a split-plot system with four replications. Two different factors were compared. The first factor – drip irrigation, was used in the two following treatments: O – without irrigation (control), K – drip irriga-tion according to tensiometer indications (-0,03 MPa). The second factor was the light used during the seedling production: S – sunny light (greenhouse, control), N – artificial blue light, D – artificial daylight. It was found that the drip irriga-tion significantly increased marketable fruit yield by 27,5 t.ha-1 i.e. by 156%. Yields of plants from seedlings produced under conditions of sunny light in green-house (control) – treatment (S), were significantly higher than those obtained on other variants. Significant interaction was occurred between two investigated fac-tors in the marketable yield-creation. Plants from seedlings produced under con-ditions of the sunny light in greenhouse (control) – treatment (S) and grown under drip irrigation, were characterized by significantly higher yields which amounted - on the ...
The effect of drip fertigation and the two ways of seedling production on the yields of cv. ‘Bingo' was determined in the field experiment carried out in the year 2008 on a very light soil at Kruszyn Krajeński near Bydgoszcz. The experiments were run in a split-plot system with four replications. Two different factors were compared. The first row factor - drip fertigation, was used in the two following treatments: KP - drip irrigation + standard N-fertilization (control),KF - drip irrigation + N-fertigation 3 times during the vegetation season. Fertiga-tion was conducted with the use of proportional mixing dispenser. The second row factor was the light used during the seedling production: S - sunny light (greenhouse, control), F - artificial light - fitotron (lamps). It was found that the fertigation significantly increased marketable fruit yield from 40,1 to 51,0 t.ha-1 (by 10,9 t.ha-1 i.e. by 27 %). Yields of plants from seedlings produced under conditions of sunny light in greenhouse (control) - treatment (S)(48,1 t .ha-1), were signifi-cantly higher than those obtained from seedlings produced in fitotron under artifi-cial light (43,0 t .ha-1). The highest yields (56,0 t .ha-1) were obtained from plants from seedlings produced in greenhouse grown ...
The paper is based on the chosen results of two one-year field experiments which were conducted in the vicinity of Bydgoszcz (Poland) and in the vicinity of Cukurova (Turkey). The aim of the study is to present the comparison of yields of chosen watermelon cultivars grown in the different climatic-soil conditions under drip irrigation with N fertigation. The experiment in Turkey was carried out under better soil conditions than in Poland - watermelon plants were cultivated on the clay loam and fine sand, respectively. ‘Crimson Sweet' and ‘Sugar Baby' cultivars were tested in the experiment in Poland, and two other cultivars (‘Madera-F1', ‘Paladin-F1') were examined in the experiment in Turkey. Nitrogen of 120 kg N was applied in two different nitrogen forms (G - granule nitrogen; L - liquid nitrogen). In the second treatment (L), the liquid N fertilizer was given with irrigation water (fertigation). All plots were drip irrigated. Higher irrigation water rate was supplied in Turkey (251.7 mm) than that in Poland (157.5 mm). Average yields of watermelon ranged from 32.62 to 37.87 t.ha-1, and from 29.09 to 30.35 t.ha-1, in the experiment in Poland and in the experiment in Turkey, respec-tively. Yields were dependent on cultivar and ...
