The impact of fertilization with the compost prepared from treated sewage sludge with Scots pine bark additive and mulching with the fresh forest ectohumus on the soil conditions, chosen parameters of one-year old Scots pine seedlings growth as well as the occurrence of soil mites (Acari) with special emphasis of oribatid mites (Oribatida) was investigated in the paper. The trials were carried out in 2008 at forest nursery Białe Błota (Forest District Bydgoszcz) on the rusty soil. The whole area of the experiment was irrigated with the use of stationary sprinkling machine.Analysis of the soil pH in particular variants of the experiment indicated that the use of organic fertilization and mulching decreased pH value. Content of available phosphorus ranged from 5,51 to 7,64 mg P2O5 100g-1 of soil, and the higher values were noted on plots fertilized with the compost and mulched. Similar dependence was noted in case of the available potassium content. Scots pine seed-lings on plots fertilized with the compost were significantly higher than those grown on plots with mineral fertilization. Organic fertilization increased also sig-nificantly the fresh mass of the above-ground parts seedlings - on average, by 79%. Impact of mulching - carried out in September - ...
The effect of fertilization with the compost from forest humus and mulching with the fresh ectohumus on the soil properties, the growth of one-year old white birch seedlings as well as on the biological activity of soils in the forest nursery was investigated in the work. The biological activity was estimated with the use of bioindicatory method - mites (Acari), especially saprophage oribatid mites (Ori-batida) were used as biological indices. The pedosphere of studied area in the forest nursery had acid reaction (pH), and the mulching with the fresh forest ectohumus decreased additionally this value. On the basis of analysis of available P and K, it was found that there was small differentiation between plots fertilized with mineral fertilization and those fertilized with the compost and mulched with the fresh ectohumus. Fertilization with the compost significantly increased the height and the fresh mass of the above-ground parts of one-year old white birch seedlings. Influence of mulching - conducted in September - on these parameters was not detected. In the spring sea-son, before the mulching measure, the density of mites was low. After the mulching measure, the number of mites - especially saprophage oribatid mites - was dis-tinctly increased. On ...
The influence of fertilization with the compost prepared from forest humus and mulching with the fresh ectohumus on the soil properties, the growth of one-year old Scots pine seedlings as well as on the biological activity of soils in the forest nursery was studied in the work. The biological activity was estimated with the usage of bioindicatory method - mites (Acari), especially saprophage oribatid mites (Oribatida) were used as biological indices. On the base of the study it was stated that the ground surface horizon was characterized by acid reaction. Fertilization with the compost from forest humus increased significantly the height of Scots pine seedlings - plants cultivated on plots fertilized with compost were by 46% higher than those fertilized by mineral fertilizers only. Organic fertilization increased also significantly the fresh mass of the above-ground parts of Scots pine seedlings. Effect of mulching - which was carried out in September - on the investigated parameters was not detected. In the spring - before the measure of mulching - the density of mites on the studied ground was low. Among these arthropods the most numerous were Actinedida which constituted from 91 to 100% of all mites. After the ...
This study examined the effect of fertilisation with compost prepared from hygienised sludge with an addition of pine-tree bark and mulching with fresh forest ectohumus on selected growth parameters for two- and three-year-old Scots pine trees and on the incidence of mites (Acari) in the soil. The experiment was carried out in 2009-2010 in the Białe Błota forest nursery (Bydgoszcz Forest District) on proper rusty soil. The entire area of the experiment was irrigated with a stationary sprinkler.Organic fertilisation with compost prepared from hygienised sludge with an addition of pine-tree bark resulted in a significant increase in the plant height and the diameter of the root neck in two-year-old pine trees. The effect of mulching on these parameters was not significant. The synergistic effect of the factors on the plant height and the diameter of the root neck was not significant. Organic fertilisation significantly increased the height of 3-year-old pine trees, whereas it did not have a significant effect on the root neck diameter. Mulching increased the plant height significantly, but no statistical effect on the diameter of the root neck was demonstrated. Although no significant interaction of either experimental factors in their effect on the plant height and the ...
