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The aim of this research has been to assess and compare the economic efficiency of production technologies used to grow a semi-dwarf winter triticale cultivar Gniewko. The method based on the standard gross margin (SGM) was used for the economic evaluation of the two production technology differentiated costs level. The analyzed material consisted of results achieved during a three-year field experiment located at the Experimental Station in Bałcyny near Ostróda. Technologies with the highest and lowest average yields were selected for comparisons. The compared technologies differed from each other in the rate of nitrogen fertilization and fungicides. The more intensive winter triticale technology in field trial, the greater the financial values of winter triticale yield as well as direct costs and direct surplus. The direct costs analysis references to the positive verification of the research hypothesis. The increase of the direct surplus value, which accounted 25.2%, was recorded when the intensity of cultivation increased. Increasing inputs for winter triticale production up to the level of intensive technology in trial conditions was economically justifiable.
We hypothesise that inhalant exposure to mycotoxins causes developmental outcomes and certain hormone-related cancers that are associated with grain farming in an epidemiological study. The aim of the present study was to identify and validate determinants of measured trichothecene mycotoxins in grain dust as work environmental trichothecene exposure indicators. Settled grain dust was collected in 92 Norwegian farms during seasons of 1999 and 2000. Production characteristics and climatic data were studied as determinants of trichothecenes in settled dust samples obtained during the production of barley (N = 59), oats (N = 32), and spring wheat (N = 13). Median concentrations of trichothecenes in grain dust were <20, 54, and <50 mg/kg (ranges <20-340, <30-2400, and <50-1200) for deoxynivalenol (DON), HT-2 toxin (HT-2) and T-2 toxin (T-2) respectively. Late blight potato rot (fungal) forecasts have been broadcast in Norway to help prevent this potato disease. Fungal forecasts representing wet, temperate, and humid meteorological conditions were identified as strong determinants of trichothecene mycotoxins in settled grain dust in this study. Differences in cereal species, production properties and districts contributed less to explain mycotoxin concentrations. Fungal forecasts are validated as indicators of mycotoxin exposure of grain farmers and their use in epidemiological studies may be warranted.
There are presented results of comparison between grain production technologies that are different in respect of approach to the tillage stage. The scope of investigations covers the factors that shape economic effectiveness of grain production, with the use of conventional technology (including ploughing) and reduced technology (with application of direct drilling). Basing on the determined direct surplus and other economic indices there are presented differences in the application effects of compared tillage systems. There are presented results of evaluation of various tractor combinations with the selected tillage outfits.
Ochratoxin A (OTA) is a nephrotoxin frequently contaminating grains. OTA inhalation during grain handling may therefore represent a health risk to farmers, and was the subject of this study. Airborne and settled grain dust was collected during grain work on 84 Norwegian farms. Climate and agricultural practices on each farm were registered. Penicillium spp., Aspergillus spp. and OTA in settled dust were measured. Settled dust contained median 4 µg OTA/kg dust (range 2-128), correlating with Penicillium spp. (median 40 cfu/mg; range 0-32000, rs=0.33; p<0.01). Similar levels were found across grain species, districts and agricultural practices. Penicillium levels, but not OTA levels, were higher in storage than in threshing dust (p=0.003), and increased with storage time (rs=0.51, p<0.001). Farmers were exposed to median 1 mg/m3 (range 0.2-15) dust during threshing and median 7 mg/m3 (range 1-110) dust during storage work, equalling median 3.7 pg/m3 (range 0.6-200) and median 40 pg/m3 (range 2-14000) OTA, respectively (p<0.001). Agricultural practices could not predict OTA, Penicillium or Aspergillus contamination. Compared to oral intake of OTA, the inhalant exposure during grain work was low, although varying by more than 1,000-fold. However, the farmers may occasionally be highly exposed, particularly during handling of stored grain.
The report is an attempt at a presentation of the production costs of maize to be used for CCM silage and corn, the costs of drying included. In 1992 production costs of dried corn per unit (941 zl/kg) were twice as high as production costs of CCM (446 zl/kg). Production costs of oat feed unit reached similar levels, i.e. 729 zl/oat unit for CCM and 619 zl/oat unit for corn.
W latach 2005 i 2007, na polach Zakładu Doświadczalno-Dydaktycznego w Gorzyniu filia Swadzim (52°29’ N; 16°46’ E), należącego do Uniwersytetu Przyrodniczego w Poznaniu, przeprowadzono 2 dwuczynnikowe doświadczenia, które miały na celu określenie wielkości spadku plonu ziarna oraz surowca do zakiszania pokolenia F2 mieszańców kukurydzy w porównaniu z pokoleniem F1. Spadek plonu ziarna po wysianiu pokolenia F2 zależał od warunków wegetacji i odmiany. W roku niekorzystnym dla plonowania kukurydzy wyniósł on średnio dla odmian 3,16 t·ha⁻¹, co stanowiło 31,8%, z kolei w roku sprzyjającym uprawie kukurydzy – 2,81 t·ha⁻¹ (23,5%). Po wysiewie pokolenia F2 badanych mieszańców kukurydzy straty z tytułu spadku plonu ziarna znacznie przekraczały koszt zakupu materiału siewnego. W 2005 roku wyniosły one średnio 781,4 zł·ha⁻¹, zaś w 2007 – 1525,3 zł·ha⁻¹. Plony świeżej masy surowca do zakiszania były także niższe po wysiewie pokolenia F2 mieszańców, a spadek plonu wyniósł średnio 6,71 t·ha⁻¹ (21,2%) w 2005 roku oraz 5,68 t·ha⁻¹ (8,8%) w 2007. Surowiec do zakiszania zebrany z pokolenia F2 mieszańców charakteryzował się niższym udziałem kolb w porównaniu z uzyskanym z pokolenia F1.
The aim of this study was to assess sludge application, and its after a year or two years, on healt of maize grown for grain and silage. In these years, sludge application in maize grown for grain caused the increase of number of plants infected by Ustilago zeae by about 5.2%. In the remaining years of the sludge application in maize grown both for grain and silage, showed only tendency to increase the number of infected maize plants by this fungus. The introduction of sludge did not influence plant damage by Ostrinia nubilalis, only in maize grown for grain in 2006–2007 there was a tendency to reduce % of the number of damaged plants after the application of sludge.
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