The results of the studies from 1991-2001 on the impact of drip irrigation and microjet irrigation on the content of chosen heavy metals (Cd, Pb, Zn) in edible parts of some vegetables (red beet, zucchini, winter squash, snap bean, carrot) and berry-bearing species (chokeberry, black currant, strawberry) are presented in the paper. Field experiments were carried out in Kruszyn Krajeński near Bydgoszcz on a soil of V-VI valuation class. The clay content was 7 % in the top soil and from 3 to 5 % in the sub-soil. The average organic matter content was 1,19 %. The water re-serve to 1 m depth of soil at field capacity was 88 mm and the available water 68 mm. The examined factor was irrigation. Three variants of irrigation have been examined: I - control (without irrigation), II - drip irrigation, III - micro-sprinkler irrigation at a soil moisture tension of up to - 0,03 MPa. It was found that irrigation significantly decreased the content of heavy metals in the fresh mass of strawberry fruits, but it influenced not significantly on this content in fruits of chokeberry and black currant. The content of examined elements in the fresh mass of zucchini and winter ...
The aim of this study is to present the organization of the wholesale fruit and vegetable market while taking into consideration the agri-food market in Cracow-Rybitwy. Selected aspects which are presented are necessary for trading and analysing the process of delivery as well as sales of fruits and vegetables by the manufacturers: 30 suppliers of fruits and 30 suppliers of vegetables were selected for detailed analysis. The following aspects were presented: costs resulting from the possibility of using the market, a distance needed to transport products, an amount of harvest sold on the market covered by research studies, the cost of sales and their structure. A general analysis of transport used for the transportation of fruits and vegetables was conducted. The frequency of arrivals and time spent at the market during individual months was also calculated. The analysis was made separately for the sale of fruits and vegetables. It was found that the organization of the garden crops market leaves much to be desired. The proof of this is the frequency of arrivals, the length of time spent at the market by manufacturers, the efficiency and cost of sale. ...
