Influence of rainfall, irrigation and mineral fertilization on yielding of peach cv. ‘Inka’

Field experiment was done in the years 2003 and 2008 in the Agriculturae Experiment Station Lipnik near Stargard Szczeciński on the sandy soil, belongs to the good-rye-complex. The experiment was set up by split-plot method in 5 rep-lications. In this experiment the effects of mineral fertilizing and different soil moisture conditions on the yield of peach cv. ‘Inka’ was studied. The first factor of the study was supplemental irrigation (O – control, not irrigated: W – under crown irrigation). As second factor was different level of mineral fertilizing: 0NPK – (contro- no fertilizing), 1 NPK – 150 kg.ha-1 (40+50+60), 2 NPK-300 kg.ha-1 (80+100+120). Supplemental irrigation was used when the tensiometer have shown that water potential dropped to 0,01 MPa. Sward was between trees and in the rows the herbicidal farrows were kept. It was found that crop in-creased on both objects it means irrigated plots and fertilized. Average under in-fluence of irrigation gathered by 9,11 kg more fruits from 1 tree (42%) than from not irrigated plants. Yields of peach fruits dependent mostly on the supplemental irrigation applied from the April to August it means during critical stages for this plants. Crops of peach fruits increased under influence of 130 ...

Changeability of the selected springs’ regime in the area of Gorce and Beskid Wyspowy Mountains

The paper considers the regime of springs which flow out in the area of the top parts of two catchments of Mszanka and Kamienica springs located in the we-stern part of The Beskid Wyspowy Mountains and in the north-eastern part of The Gorce Mountains. The analyzed regime consists of the measurements of the spring water efficiency and temperature (quantitative) and the results of the chemical analyses of the water samples (qualitative). The quantitative regime of springs was measured once, frequently and systematically (stationary), whereas the qualitative regime was measured frequently two to six times. The carried out research indica-tes that in the tested area of Mszanka catchment 192 springs occur and in the Ka-mienica catchment - 33 springs. The efficiency of springs which were analyzed once in the Mszanka catchment ranged between 2,0-200,0 dm3 ∙ min-1, with the water temperature of 5,0-13,0ºC. Most frequently the gravity springs and hillside springs, qualified by Meinzer to V-VI classes flew out of the Krosno Beds, then from the Kanina Beds and from eocene spilosites. On the other hand, in the area of the Kamienica catchment, the efficiency of the springs which were measured once, ranged between 2,0 and120,0 dm3∙min-1, with the water temperature ...

Evaluation of suitability of grass-legume mixtures for renovation of low-productive pastures on the ligt soils

The aim of the study was the estimation of six mixtures for renovation of pastures located on the soils of V and VI quality class under differentiated nitrogen fertilization. The experiment was carried out in the farm specializing in breeding Limousin beef cattle in the years 2008-2012. The most important factor verifying the suitability of mixtures has proved the botanical stability and the resistance to weed infestation of plant communities created by these mixtures. These features were guaranteed by the multispecies mixtures of cocksfoot, but turned out to be completely unreliable in case of mixture with dominance of tall fescue. Cocksfoot was the most dynamic species of the communities of pasture. This species was increasing its percentage in the subsequent years of utilization, effectively reducing their weed infestation. Valuable component of mixtures has also proved the perennial ryegrass which was persisting in significant quantities during the four years. Its significant share in mixtures without cocksfoot grass turned out to be far less competitive with respect to the developing dicotyledonous weed species. Also the amount of cocksfoot negatively affect the development of perennial ryegrass, especially at higher levels of nitrogen fertilization. The dose of 120 kg of nitrogen, used together ...