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• Exploration of relations among the members of the supply chain on the basis of relationship indicators

  177-190

  Noémi Ványi

  Gergely Varjasi

  Views:

  264

  Today the various business units on the market are not competing individually against each other, but doing this as members of a supply chain, which are delivering the products or services to the customers with coordination. The participants are cooperating in the process of purchasing, production and sale. Their common objective is to deliver for the consumer demand. The supply chain approach of the enterprises is a business philosophy, which requires trust, commitment, coordination, shared objectives, support from the management, and the understanding and acceptance of the mutual dependence (Német, 2009). The main objective of our study is to analyse the relationships among the players of the supply chain through several relationship indicators, such as trust, economical satisfaction, social satisfaction, compelling power, non-compelling power, dependence, reputation and conflict. The relationship among the players of the supply chain has been analysed from two aspects, through the position and through the role of the players of the supply chain. This study aims to present the results of the analysis highlighting the critical points.

• The study of the fertilizing effect of wheat straw ash in a greenhouse experiment

  47-51

  Rita Kremper

  Réka Hidvégi

  Andrea Balláné Kovács

  Jakab Loch

  Views:

  508

  The effect of wheat straw ash as a fertlizizer was studied in a pot experiment with an acidic sandy loam soil (pH_KCl=4.9) with weak K and P supply. The test plant was ryegrass (Lolium perenne). The treatments were the following: 1. control untreated soil, 2. NPK fertilizer, 3. small dose of ash (1.4 g kg^-1), 4 large dose of ash (2.8 g kg^-1), 5. small dose ash completed with NP fertilizers. Soil parameters (pH_H2O, pH_KCl, ammoinum-lactate soluble P, K, 0.01 M CaCl₂ soluble PO₄^3--P, K, Mn, Cu, Zn ) and plant parameters (yield, P, K, Ca, Mg, Zn, Mn uptake) were investigated. Based on the analysis of the straw ash sample and the results of pot experiment it can be stated that the wheat straw ash is suitable for the fertilization of the studied soil. The small dose ash completed with NP resulted in the largest yield increment (43%). In order of the treatments the pH_KCl changes to: 4.9, 4.8, 5.2, 5.8, 5.1. As the N : P₂O₅ : K₂O ratio is 0 : 1: 3.5 in the wheat straw ash sample, to reach optimal yield ash should be completed with N and P.