The influence of sprinkler irrigation and four nitrogen fertilization doses on the height of true millet cv. ‘Gierczyckie’ was determined in a field experiment carried out in the years 2005–2006 on a very light soil at Kruszyn Krajeński near Bydgoszcz. The soil in horizon 0–50 cm was characterized by field water capacity 57 mm, useful retention 43 mm and effective useful retention 30 mm only. The experiments were run in a split-plot system with three replications. Two different factors were compared. The first row factor – irrigation, was used in the two following treatments: Wo – without irrigation (control), W1 – sprinkler irrigation according to tensiometer indications (-0,03 MPa). The second row factor – differentiated nitrogen fertilization, was used in the four following variants (doses): N0 = 0 kg N ha -1, N1 = 40 kg N ha -1, N2 = 80 kg N ha -1, N3 = 120 kg N ha -1. Water requirements of true millet were estimated as optimal rainfall amounts for this crop, according to Klatt and Press proposals. Mean - for two seasons - water needs of true millet (since May 1 to August 31) amounted 278 and 294 mm, for Klatt and Press proposals, ...
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 influence of drip irrigation and two nitrogen fertilization doses on the height and quality of grain yield of maize cultivars Cedro and Smok was deter-mined in a field experiment carried out in the years 2006-2008 on very light soil at Kruszyn Krajenski, near Bydgoszcz. Results of the experiment have proved that drip irrigation was the basic yield creating factor without which maize cultiva-tion would have been failed while only dependent on the rainfall in June and July. Low yielding of non-irrigated plants caused a high productive effects of the treatment. The average increment of irrigated corn yield was 4,77 t.ha-1(221%) and the efficiency of 1 mm of irrigated water had a mean of 34,9 kg.ha-1. Double dose of nitrogen fertilization used on irrigated plots caused an increase of grain yield of corn (in average of 11%), an increase of the DM grain of corn and pro-tein in grain and decreased the grain moisture content during harvesting. The re-sults of the study and of some previous works have shown, that drip irrigation used instead of sprinkler irrigation cause an increase of individual productive ef-fects and contribute to more efficient water use. ...
The purpose of the study conducted in the years 2005–2006 in Kruszyn Krajeński near Bydgoszcz was determining the influence of irrigation and nitrogen fertilization on morphological features of root systems as well as overground parts of millet cultivable varietes Gierczyckie and Jagna including the structure of grain yield. The plants were cultivated on a very light soil. The research shown that irri-gation significantly determined various values of morphological features of over- and undeground parts in each tested varitety of millet, where Jagna variety re-acted better on this experiment factor than Gierczyckie variety. In each variety the mass of overground parts of millet as well as the mass of grain increased more in-tensive in relation to the mass of roots and P2 (ratio of the overground-part mass and roots mass). Each variety used in the experiment reacted positive on nitrogen fertilisation, where, with no irrigation, Gierczyckie variety more effectively use higher nitrogen frtilisation doses (80-120 kg•ha-1), whereas Jagna variety lower doses (40-80 kg•ha-1). Irrigation increases the effectiveness of nitrogen fertilisa-tion for Gierczyckie variety, when nitrogen fertilisation dose reach 40-80 kg•ha-1 and for Jagna variety 40 kg•ha-1. ...
The influence of sprinkler irrigation and four nitrogen fertilization doses on the height of true millet cv. ‘Gierczyckie’ was determined in a field experiment carried out in the years 2005–2006 on a very light soil at Kruszyn Krajeński near Bydgoszcz. The experiments were run as a two-factorial trial in a split-plot system with three replications. The first row factor – irrigation, was used in the two fol-lowing treatments: without irrigation (control), sprinkler irrigation according to tensiometer indications (-0,03 MPa). The second row factor – differentiated nitro-gen fertilization, was used in the four following variants (doses): 0, 40, 80 and 120 kg N•ha-1. Investigations included estimation of infestation degree: roots with complex of pathogens, stem base with Fusarium spp., Oculimacula spp. and Rhizoctonia spp. On leaves was observed the occurrence of: powdery mildew, Phyllosticta leaf blight, and other necrotic spots. Irrigation caused the significant increase of Fusarium foot rot as well as the decrease of sharp eyespot. Health status of non-irrigated true millet was de-pendent mostly on rainfall. Lower intensity of Fusarium foot rot was noted in the year characterized by lower rainfall amounts during the vegetation period of true millet, but in case of sharp eyespot – in the year ...
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 response of the three romaine lettuce cultivars to nitrogen fertigation by drip system was investigated in the field experiment carried out in 2009-2010 on the very light soil at Kruszyn Krajeński near Bydgoszcz. The trial was established as one-factorial trial with four replications. The studied factor was cultivar: ‘Barracuda', ‘Chiquina' i ‘Romora'. Fertigation was conducted with the use of proportional mixing dispenser. The use of drip irrigation connected with nitrogen fertigation enabled the proper growth and development as well as valuable yielding of plants on the very light soil, in the region of low rainfall amounts during the vegetation period. From among the three cultivars tested, ‘Barracuda' was cha-racterized by the highest: yield, head weight and dry matter content. The influence of drip irrigation
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At field experiment carried out in the years 2009-2010 at the very light soil in Kruszyn Krajeński near Bydgoszcz, the influence of drip irrigation on the chosen features of height of cup plant was studied. The cup plants were cultivated from the micropropagation seedlings. The experiment was done as a one factorial in 4 replications. The main factor of the experiment was irrigation done with following variants: O- without irrigation (control plots), K- with drip irrigation. Drip irrigation scheduling was done according to tensiometers indications. Experimental material were cup plants seedlings from micropropagation. Irrigation significantly influenced on the height increase of the leaves fresh mass and the number of the leaves. Irrigation also increased the transpiration leaf area and the dry matter content. ...
The aim of the study was to determine the effect of drip irrigation and ni-trogen fertilization on yields of ‘Kutnowska' onion grown on the very light soil in the region characterized by rainfall deficits during the vegetation period. Field experiments were carried out in 2003-2004 at Kruszyn Krajeński near Bydgoszcz on a soil belonging to the VI class (degraded black earth belonging to the very poor and poor rye complex). Field water capacity in the layer 0-50 cm amounted 57,5 mm, and the effective useful retention was 29,3 mm. Field trial was established and conducted in three replications as two-factorial experiment in split-plot design. Irrigation was the first order factor used in the two variants: without irrigation (control) and drip irrigation at - 30 kPa. The second order factor was nitrogen fertilization: N0 - 0 kg N ha-1(control), N1 -70 kg N ha-1, N2 - 140 kg N ha-1, N3 - 210 kg N ha-1. Drip irrigation was the basic yield-creating factor, securing the cultivation of onion on the loose sandy soil. Marketable yield obtained from ir-rigated plots - average for years and nitrogen doses - amounted 33,2 t•ha-1. Un-der conditions of optimum moisture secured by irrigation, the ...
The aim of the study was to determine the influence of drip irrigation on yields of winter squash cv.‘Rouge vif d'Etampes' grown on the very light soil in the region of decreased rainfall amounts in the vegetation period. The field experiment was conducted in 2007-2008 at Kruszyn Krajeński near Bydgoszcz on the soil of quality class V-VI (very weak and weak-rye-soil-complexes). Field water capacity in the soil layer 0-50 cm was 57,5 mm, while the effective useful retention amounted 29,3 mm. The experiment was designed and carried out as one-factorial trial in four replications. The single plot area was 11,2 m2. Irrigation was used in the two variants: W0 - without irrigation (control) and W1 -drip irrigation. Drip ir-rigation was conducted according to soil tensiometer indications (-0,04 MPa). Drip irrigation significantly increased marketable yields of winter squash ‘Rouge vif d'Etampes' from 34,2 t.ha-1 to 75 t.ha-1 (increase by 40,8 t ha-1, i.e. 119 %). This yield increase was obtained thanks to significant increases the weight of a fruit and its size (horizontal and vertical diameter) as well as the num-ber of fruits. ...
Field experiments were conducted in 2011 on the very light soil in Kruszyn Krajeński near Bydgoszcz. Responses of the three romaine lettuce cultivars grown in spring and autumn to nitrogen fertigation by drip system were compared. Experiments were established as two-factorial trials, four times replicated. The experimental factors were: nitrogen dose of fertigation (25 kg N•ha-1, 50 kg N•ha-1), cultivars (‘Barracuda', ‘Chiquina', ‘Romora'). Fertigation was conducted with the usage of proportional mixing dispenser. Higher marketable yield of romaine lettuce cultivars was noted in spring cultivation. Increased nitrogen dose (from 25 kg N•ha-1 to 50 kg N•ha-1) significantly increased marketable yield of lettuce. From among the tested cultivars, ‘Romora' was characterized by the higher yield in spring cultivation whereas ‘Barracuda' - in autumn. ‘Chiquina' was characterized by the lowest yield. The higher weight of a single lettuce head was noted in spring cultivation. The higher nitrogen dose significantly increased the single lettuce head. The highest single lettuce head was noted in case of ‘Barracuda'. On average for cultivars tested, the higher nitrogen dose caused the decrease of dry matter content in leaves of lettuce grown in spring time, and in case of autumn cultivation this tendency was opposite - the higher ...
A field experiment carried out in two vegetation seasons in the years 2010 and 2011 on a very light soil at Kruszyn Krajeński, in the vicinity of Bydgoszcz, Poland. Investigation of the influence of drip irrigation on some growth parameters of 2-year-old cup plant (Silphium perfoliatum L.) were done. The cup plants were cultivated from the micropropagation seedlings. The experiment was performed as one factorial in 4 replications. The main factor of the experiment was irrigation performed with following variants: O- without irrigation (control plots), D- with drip irrigation. Drip irrigation was scheduled according to tensiometers indications. Irrigation significantly increase the height of the plants, the length and number of internode, the thickness of the stalk,. Irrigation also increased the fresh weight of the shoots, and the number of the leaves. ...
