The changes in growth rate, daily production of above-ground phytomass and lawn density of turfgrass after application of fertilizer based on polysulfide (Sulka NKS+) were evaluated in Nitra (the ...Slovak Republic) climatic conditions. The polysulfide preparation was applied 2-times, 4-times and 6-times during the vegetation period in 2015–2017 and the effect was compared with a zero control. Stimulatory effect of Sulka NKS+ was shown in the average daily gain of grass height and average daily gain of aboveground phytomass weight with the most visible expression in the 2nd and 3rd year of cultivation. For the thickening lawn index was found out inhibitory effect of polysulfide fertilizer. The average values of the first two characteristics (average daily gains of grass height and weight of above-ground phytomass) have also increased with the increasing number of Sulka NKS+ applications.
The aim of this experiment was to compare growth and production parameters of the first Slovak cultivar of xFestulolium with Felina and Hykor. The experiment was conducted at the Demonstrating and ...research base of Department of Grassland Ecosystems and Forage Crops, Slovak Agricultural University in Nitra (Slovak Republic) with controlled moisture conditions (glass house) in 2017 (one year pot experiment). We compared new intergeneric hybrid Lenor with Felina and Hykor. In the experiment were evaluated average height (mm) and dry matter (DM) yields (g). New intergeneric hybrid Lenor was in every cut highest (P < 0.05) (59.57 mm) in compare with controlled varieties Felina (47.89 mm) and Hykor (47.07 mm). Lenor had higher dry matter yields than Felina and Hykor in the first and second cut. In the 3rd cut were not observed significant differences in dry matter yields. The highest DM yields were measured by Hykor (2.82 g). In sum of three cuts reached Lenor highest dry matter yield (4.99 g). This measured value was higher (P < 0.05) compared with Felina’s production.
The aim of this experiment was to compare selected qualitative parameters in above-ground phytomass of the first Slovak cultivar of Festulolium A et. Gr. cv. Lenor in compare earlier registered ...cultivars Felina and Hykor. The pot experiment was conducted at the Demonstrating and research base of the Department of Grassland Ecosystems and Forage Crops, Slovak Agricultural University in Nitra (Slovak Republic) with controlled moisture conditions (shelter) in 2017. Content of nitrogen, phosphorus, potassium, calcium, magnesium, crude fiber and water soluble carbohydrates were determined from dry above-ground phytomass of grasses. The significantly highest (P<0.05) nitrogen content in average of cuts was in above-ground phytomass of Felina (30.3 g.kg-1) than Hykor (25.4 g.kg-1) and new intergeneric hybrid Lenor (25.0 g.kg-1). At the least content of phosphorus was found out in hybrid Lenor (3.4 g.kg-1). In average of three cuts was the least concentration of potassium in new intergeneric hybrid Lenor (5.8 g.kg-1). At least content of calcium was found out in hybrid Lenor (7.0 g.kg-1). Magnesium concentration of was from 5.0 g.kg-1 (Hykor) to 6.1 g.kg-1 (Felina). Higher (P<0.05) fiber content in average of cuts was in above-ground phytomass of Lenor (27.0 %) and Hykor (26.5%) than Felina (24.0%). The highest concentration of water soluble carbohydrates has in Hykor and Lenor (3.5%).
The aim of the experiment was to find out the impact of different moisture regime on selected indicators of the growth and production process of Medicago sativa L. cv. Zuzana and Trifolium pratense ...L. cv. Poľana. The pot experiment was carried out at the Department of Grassland Ecosystems and Forage Crops, FAFR SUA in Nitra in 2015. There were evaluated two variants of irrigation: 1st – irrigation once a week and 2nd – irrigation twice a week with a single dose of 300 ml of water per pot. The results of the experiment showed a positive effect on the height of Medicago sativa L. and Trifolium pratense L. plants (p = 0.006 and p = 0.316), the number of stems (p = 0.001 and p = 0.002), dry phytomass production (p = 0.001 and p = 0.044) and the quantity of harvest residues of evaluated legume forages (p = 0.100 and p = 0.146) with a general more visible effect under irrigation twice a week. By comparison of both species, irrigation twice a week was more effective for Medicago sativa L. on plant height, number of stems and weight of above-ground phytomass, whereas for Trifolium pratense L. only on the weight of harvest residues compared to irrigation once a week.
The aim of this experiment was to compare find out of the changes of assimilation pigments content of turf Festuca spp. leaves after application of different nutrition forms under non–irrigated ...conditions. In period April 2012 – May 2015 (without June 2014 and February 2015) experiment was carried out in warm and dry conditions in area of Nitra (Slovak Republic). Concentration of assimilation pigments (chlorophyll a, chlorophyll b and total carotenoids) was determined spectrophotometrically. The experiment was included 10 treatments: 1. Without fertilization, 2. Saltpetre with dolomite, superphosphate, potassium salt, 3. Turf fertilizer NPK 15-3-8 (+ 3MgO + 0.8 Fe + 18S), 4. Slow release fertilizer NPK 14-5-14 (+ 4CaO + 4MgO + 7S), 5. Controlled release fertilizer NPK (S) 13-9-18 (+ 6S), 6. Organic fertilizer NPK 5-1-1, 7. Organic fertilizer NPK 3-2-1 and 3 mycorrhizal preparations. The use of inorganic and organic fertilizers resulted in an increase chlorophyll a, b content and total chlorophyll in leaves Festuca spp. More pronounced increase in chlorophyll content was found by the application of the Turf fertilizer. Application of this fertilizer has a statistically significant effect on content of chlorophyll a + b than in the other evaluated treatments without turfs fertilized by Controlled release fertilizer and Organic fertilizer NPK 5-1-1. A statistically significant increase in the total carotenoids concentration was observed after the use of Saltpetre with dolomite, superphosphate, potassium salt and Turf fertilizer as compared to the non-fertilized control.
The aim this study was analyse factors effecting on the milk production in select herd of the Slovak spotted breed. Data were analysed using the Statistical Analysis System version 9.3.1 and linear ...model with fixed effects of herd-year-season of calving, breeding type, father, number of lactation. Average of traits of milk production was 3 539.82 kg of milk, 143.59 kg of fat, 115.94 kg of proteins and 168.13 kg of lactose, 4.05 % fat, 3.28 % proteins and 4.75 % lactose. The linear model to represent coefficient determination R2 = 0.3783 for milk production with all fixed effects. The analysis by the effect was the highest effect of herd-years-season of calving (0.2515) than effect of number of lactation (0.1133). In assessing of individual various sources of variability on production traits had statistically most significant effect on milk production herd - year - season, father and order of lactation sources of variability P≤ 0.001. Statistically not significant impact had order of breeding type source P> 0.05. Correlation coefficients between kgs of milk and fat, kgs milk and proteins and kgs milk and lactose (r=0.90032, r= 0.97531, r= 0.98905), were statistically high significant.
The aim of this experiment was to compare the influence of fertilizers with different speed of nutrients release on growth–production indicators of turf under non–irrigated conditions. The experiment ...was carried in warm and dry conditions in area Nitra (Slovak Republic). In the experiment were followed 5 treatments (1. without fertilization, 2. Nitre with dolomite, Superphosphate, Potassium salt, 3. Turf fertilizer Travcerit®, 4. Slow release fertilizer SRF NPK 14–5–14 (+ 4CaO + 4MgO + 7S), 5. Controlled release fertilizer Duslocote® NPK (S) 13–9–18 (+6S)). The highest gain of height reached variant fertilized by fertilizer SRF NPK 14–5–14 (+ 4CaO + 4MgO + 7S). Comparison of the individual treatments for the whole period showed significantly lower average daily gains of height on control treatment compared to fertilizing treatments Nitre with dolomite, Superphosphate, Potassium salt, SRF NPK 14–5–14 (+ 4CaO + 4MgO + 7S) and Duslocote® NPK (S) 13–9–18 (+6S). During the reported period the highest gain of weight reached treatment by application fertilizer Duslocote® NPK (S) 13– 9–18 (+ 6S). Comparison of the individual treatments for the whole period, were found significantly lower average daily production of phytomass on control treatment in comparison with fertilization turfs by Travcerit® and Duslocote® NPK (S) 13–9–18 (+6S).
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