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The influence of competitive interactions between spring wheat and the undersown Persian clover, as well as the diversified density of plants, on the stomatal conductance and intensity of the processes of photosynthesis and transpiration in both species was evaluated during a pot experiment conducted between 2010 and 2012. The spring wheat and Persian clover cultivation methods – puresowing, cultivation...
The article evaluates the land use structure in municipalities of the Warmian-Masurian voivodeship (Poland) in 2002–2012. The dynamics of changes in land use and the correlations between the components of the agricultural environment and land use structure were determined.The trends in land use and agricultural land management were identified, and agricultural and forest ecosystems were evaluated...
The paper presents the results of a 3-year-long (2008–2010) study on the dynamics of weedinfestation of spring barley sown after different previous crops (potato, spring wheat and springbarley, in 1- and 2-year sequences of the same crop) in four-field crop rotation systems with 25, 50 and75% shares of spring barley. Weed infestation was evaluated at the barley tillering stage and beforeharvesting,...
The effects of phosphorus biofertilizers made from animal bones and sewage sludge ash and containing phosphate-solubilizing bacteria, Bacillus megaterium, were analyzed in a field experiment involving spring wheat. It was assumed that biofertilizers would be as effective as conventional phosphorus fertilizers such as superphosphate and phosphorite. The influence of biofertilizers on the growth rate...
Competitive interaction between spring barley and Italian ryegrass was investigated in the pot experiment. It was evaluated on the base of the dry mass accumulation in over-the-ground parts and roots. The factors of the experiment were: 1. method of sowing the plants – pure crop and mixed crop (with identical share of both components), 2. supply of plants with water – optimal dose (of 17000 cm³ during...
A pot experiment, set up in an additive design, was run in order to assess the effect of Italian ryegrass on morphological traits of spring barley at different phases of its development under optimal and 50% lower soil moisture content. The following traits were measured: plant height, number of developed leaves per plant, length of ears, number of grains in an ear and length of roots. The assessment...
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