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The effect of differentiated pre-sow ploughing depth (30, 20 and 10 cm) and weed control method (mechanical, chemical, combined mechanical and chemical) on the overwintering, weed infestation, yield and quality of seeds of oilseed rape was tested. Shallower ploughing worsened the main traits of the autumn condition of rape plants. Rape plants treated chemically had better-formed rosettes than those treated mechanically. Ploughing made to the depth of 30 and 20 cm did not significantly differentiate the yield of rape plants. However, a significant decrease (9-13%) in the yield occurred when the ploughing depth went down to 10 cm. The highest yield was obtained from the rape controlled chemically against weeds. The yield-protective effect of the combined mechanical and chemical weed control was comparable to that of mechanical method.
The paper presents results of studies on energy efficiency of production of some Brassica oilseed crops: winter and spring oilseed rape (Brassica napus L.), white mustard (Sinabis alba L.), Indian mustard (Brassica juncea L.), spring false flax (Camelina sativa L.) and crambe (Crambe abyssinica Hochst.), which in the international commercial trade are referred to as oilseed rape. In the agronomic and ecological conditions of Poland, 1 ha of winter oilseed rape can generate over 166 GJ energy, including about 45 GJ of energy utilisable for production of methyl (ethyl) esters. Having subtracted the crop production input (about 21 GJˇha-1), the cumulated energy gain from 1 ha winter oilseed rape is energy equivalent to nearly 3.5 t of diesel oil or 8.5 t of firewood. The energy potential of spring oilseed crops seeds and straw is relatively lower: 31-39% less for spring oilseed rape and white mustard, 51-53% less for false flax and Indian.
The cost-effectiveness of four production systems of a short-straw form of winter triticale (cv. Alekto) with different levels of nitrogen fertilization and fungicide treatment was determined. Based on the current prices of means of production, the total cost of winter triticale production was estimated at PLN 2200-2600, and direct costs accounted for 60-65% of total costs. Regardless of the applied production technology, the predominant cost items were mineral fertilizers (30-39%), followed by the costs of tractor and machine operation (approximately 26-30%), crop protection agents (approximately 11-19%) and labor (approximately 3%). The highest productivity (grain yield per 1 ha) and cost-effectiveness (income per 1 ha, unit production cost, profitability ratio) were noted in a production system where short-straw winter triticale was fertilized with nitrogen at 120 kg·ha⁻¹ N in two equal splits (BBCH 27 and 32) and subjected to two fungicide treatments (BBCH 31 and 39).
The present paper covers economic analysis (concerning energy and cost aspects) of rye production technologies employing different cultivars, sowing dates, NPK fertilisation, microelements nourishment and weed control. Intensive production of rye using a hybrid cultivar, early sowing and NPK fertilisation at 176 kg·ha-1 produced 46% higher yields compared to extensive technologies involving open pollination cultivars and low fertiliser rates. The highest energy consumption in winter rye production was caused by NPK fertilisation. Intensive technologies were less energy-effective than extensive methods. The direct costs of growing 1 ha of rye in extensive technologies equalled 2.2 – 2.9 t grain. In intensive technologies direct costs were returned at yields as high as 3.9 – 4.6 t per ha. The yield value increment resulting from more intensive production methods did not cover completely the increase in direct costs.
The article presents the response of an open pollinated cultivar ‘Warko’ and a hybrid cultivar ‘Esprit’ of winter rye grown on good rye soil suitability complex to delayed sowing date, NPK fertilisation levels, fertilisation with microelements and weed control. The experiment was established in a half replication kn-1 type design. The hybrid cultivar ‘Esprit’ produced yields that were on average 18% higher than those obtained from the open pollinated cultivar ‘Warko’. Delaying the date of sowing by two weeks decreased the winter rye yields by about 10%. The response of both cultivars of rye to the sowing date was identical. The effectiveness of yield increase under the influence of the maximum fertilisation rate was higher for the open pollination cultivar ‘Warko’. Chemical weed control of rye saved 0.24 t grain per ha. The yield of winter rye was determined by the number of ears per 1 m2 and 1000 seed weight.
Foliar fertilizers are increasingly used in agricultural practice to maximize the yield potential of T. aestivum. Foliar fertilization can effectively reverse nutritional deficiencies (macronutrients), and it can be used as the main method for supplying plants with the required micronutrients. The objective of this study was to determine the effect of various systems of foliar micronutrient and macronutrient fertilization on the yield and quality of wheat grain. A field experiment was carried out in 2012-2015, in the Agricultural Experiment Station in Bałcyny, owned by the University of Warmia and Mazury in Olsztyn. The highest grain yield (10.16 Mg ha-1) of winter wheat was noted in the treatment where foliar fertilizers were supplied in 5 applications. It was higher by 230-430 to 660 kg ha-1 than in plots where foliar fertilizers were supplied in 2 applications. Intensified foliar fertilization increased nitrogen (54%) and potassium (12%) concentrations, but decreased the magnesium (10%) content of winter wheat straw. The concentrations of phosphorus (0.34 g kg-1 dry matter (DM)), potassium (0.23 g kg-1 DM), calcium (0.40 g kg-1 DM) and sulfur (0.05 g kg-1 DM) in winter wheat grain increased in response to intensified foliar fertilization. Foliar application of liquid macronutrient and micronutrient fertilizers increased micronutrient concentrations in winter wheat straw (copper, zinc, manganese, iron), but decreased the micronutrient content of grain (copper, zinc, iron). Intensified foliar fertilization significantly reduced total protein content (1.1 g kg-1 DM) and gluten content (0.9%) and deteriorated protein quality. The influence of different foliar fertilization systems on the falling number was determined by precipitation levels during the heading and ripening of winter wheat. The rheological properties of dough (development, stability and softness) improved each year in response to intensified foliar fertilization with macronutrients and micronutrients.
Brassica oilseed crops have very high sulfur requirements. The progressive decrease in the sulfur content of soil, the growing share of cruciferous vegetables in agricultural ecosystems and a significant drop in annual wet and dry deposition of sulfur have prompted a growing body of research into sulfur as a valuable fertilizer ingredient. The aim of this study was to determine the effect of sulfur fertilizers applied to soil on nitrogen, phosphorus, potassium, calcium, magnesium and sulfur concentrations in the root residues, straw and oil cake of winter and spring rapeseed. The experimental material was collected from a field experiment conducted in 2005-2008 at the Agricultural Experiment Station in Bałcyny (Poland). The highest concentrations of nitrogen, phosphorus, magnesium and sulfur were noted in the oil cake of both winter and spring rapeseed. Potassium levels were highest in the root residues of winter and spring rapeseed. Winter rapeseed accumulated the highest amounts of calcium in roots, and spring rapeseed – in straw. Sulfur fertilizers applied to soil decreased nitrogen concentrations and increased calcium and sulfur levels in the roots of both spring and winter rapeseed, whereas phosphorus concentrations increased only in the roots of winter rapeseed. Sulfur fertilization led to a drop in the potassium content of winter rapeseed roots (by 0.7 g kg-1 DM) and an increase in potassium levels in spring rapeseed roots (by 1.2 g kg-1 DM). The application of sulfur fertilizers significantly increased potassium and sulfur concentrations in the straw of both spring and winter rapeseed (by 1.3-1.7 and 0.5-0.6 g kg-1 DM, respectively). The application of sulfur fertilizers at optimal doses for winter rapeseed significantly increased the calcium content of straw (by 1.3 g kg-1 DM), but did not lead to differences in nitrogen levels. Sulfur fertilization significantly reduced nitrogen (by 0.7 g kg-1 DM) and calcium (by 0.6 g kg-1 DM) concentrations of spring rapeseed straw. The content of all the analyzed macronutrients increased significantly in spring rapeseed oil cake in response to sulfur fertilization. Sulfur also increased the concentrations of the evaluated macronutrients, excluding nitrogen and phosphorus, in winter rapeseed oil cake.
The objective of our paper was to present factors of the efficiency of farms cultivating rapeseed. The analysis included production and economic results for rapeseed cultivation. We used tabular, graphic, and descriptive methods to measure the research results. In addition, the authors used a regression model to measure the impact of selected factors on production and economic results of farms. The authors used correlation analysis and the classic method of least squares to measure homoscedasticity. Our research found that the value of production and income has increased in all farms. We observed from the survey that the production and income calculated per one ha. farmland increased. The income calculated per one employed person has increased as the result of hired labor on the farms.
The aim of this study was to determine the quality of flour, dough and bread made from the grain of winter wheat grown in a continuous cropping system or after oil plants (winter rapeseed, spring rapeseed, white mustard, brown mustard) in production systems of different intensity. The above products, obtained from wheat grain harvested in three growing seasons (2006/2007, 2007/2008, 2008/2009), were analyzed to determine the whiteness, ash content and water absorption capacity of flour, the development time, stability, softening, resistance, extensibility and energy of dough, and the baking volume and yield of bread. The grain of winter wheat grown in a continuous cropping system produced whiter flour with a lower ash content than the grain of winter wheat plants grown after oil plants. The intensification of wheat grain production contributed to flour darkening and a decrease in flour ash content. Monoculture had no adverse effects on the water absorption capacity of flour, the development time, stability or softening of dough. Intensification of production improved water absorption of flour, the development time, stability and softening of dough. The extensibility and energy of dough made from flour obtained from wheat grown in a continuous cropping system were substantially lower, compared with wheat grown after winter rapeseed. Intensification of production also improved dough extensibility and energy. The resistance of dough made from wheat grain produced under medium-input technology was significantly lower, compared with grain produced under low-input technology. Intensification of wheat grain production contributed to a greater increase in the yield of bread made from winter wheat grown after oil plants (primarily winter rapeseed and brown mustard), compared with monoculture.
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