Joint International Conference on Long-term Experiments ...

Evaluation of effect of fertilization on plants needs an examination on plant-soil system.
Amount, biodiversity and activity of living beings in soils depend on physical and
chemical parameters, while soil microorganism impact soil processes (SZABÓ, 1986).
Application of chemical fertilizers may cause acidification in soils due to its
chemical attributes (CHANDER – ABROL, 1972; FELIZARDO et al., 1972; POWER,
1972). To decrease the harmful effects of fertilization, farmers are trying to decrease the
amount of chemicals, and to substitute that to manure or biofertilizers, which are
permitted in biofarming. In biofarming, the sustainability and improving of soil fertility
plays the greatest role (AUBERT, 1981; NAGY et al.2001).
Our experimental data can be used, in the main objective of crop production, in
improving of environmental protection, and the site-specific fertilization.
MATERIALS AND METHODS
An experiment was carried out with parsley in spring of 2006 with 12 treatments and 4
replications at the Experimental Site of Debrecen University. Soils used were from
Latókép (calcouorus chernozem) and Újfehértó (acid arenosol). Important parameters of
soils are the followings:
Látókép: pH (H2O): 6.7; pH(KCl): 5.9; pH(CaCl2): 6.23; Humus (%): 2.5; KA: 42;
Újfehértó: pH (H2O): 4.1; pH(KCl): 3.7; pH(CaCl2): 6.23; Humus (%): 1.3; KA: 27;
10 kg of Látókép and 12 kg of Újfehértó soil was dispensed to pots. The N, P and K
treatments were added as NH4NO3, KH2PO4, KCl solution. The amount of applied
biofertilizer was in accordance with the prescribed volume and two times of that.. The
Phylazonit MC biofertilizer contained carboxi-methyl-cellulose (CMC), microelements,
Azotobacter croococcum and Bacillus megaterium soil bacteria, heteroauxin, gibberelin,
vitamin B. Treatmnets applied were in Table 1.
Table 1: Combination of treatments
Biofertilizer ml/pot
Treatment N g/pot Látókép Újfehértó P g/pot K g/pot
1 0.2 70 80 0.1 0.3 N1*B1
2 0.2 35 40 0.1 0.3 N1*B2
3 0.2 - - 0.1 0.3 N1*B3
4 0.1 70 80 0.1 0.3 N2*B1
5 0.1 35 40 0.1 0.3 N2*B2
6 0.1 - - 0.1 0.3 N2*B3
7 0.05 70 80 0.1 0.3 N3*B1
8 0.05 35 40 0.1 0.3 N3*B2
9 0.05 - - 0.1 0.3 N3*B3
10 - 70 80 0.1 0.3 N4*B1
11 - 35 40 0.1 0.3 N4*B2
12 - - - 0.1 0.3 N4*B3
313