EFFECT OF ORGANIC AND INORGANIC FERTILIZATION ON YIELD AND by exb38697

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									     EFFECT OF ORGANIC AND INORGANIC
FERTILIZATION ON YIELD AND C(ORG) CONTENT
  OF SOIL IN LONG-TERM FIELD EXPERIMENTS

                    Tamás Kismányoky

   University of Veszprém Georgikon Faculty of Agriculture
               Festetics Str. 7., H-8360 Keszthely
                    E-mail: kis5556@ella.hu
Introduction
In the frame of the Internationalen Arbeitsgemeinschaft für
Bodenfruchtbarkeit under Prof. Dr. Drs. h.c. Boguslawski
leadership the IOSDV network with participation of 10 European
countrys were established in 1984.
Most of the above mentioned field trials are carried out recently
and hopefully in the future, too.
In Keszthely (Hungary) the initiation date of IOSDV was 1983
autumn, and the investigations are running now as well.
The recent publication wanted to give a short information about
the main important results of the past 20 years. Till now 7
rotations of the three field rotation went through. At the
biometrical evaluation the first rotation (1984-1986) is left out
because of the accuracy and the last rotation (2002-2004) is
omitted than it is not evaluated now. In this material the
conclusions have been drawn from the 5 rotations results.
Methods

The experimental site (univ. exp. station) is situated int he west part of
Hungary at the Longit East 17o14’ Latit North 46o46’. The soil is Ramann-
type brown forest soil (Eutric Cambisol) above 112 m see-level. Water table 3
m deep. This area has moderate rainfall and mild temperature copnditions.
The amount of ranfall 683 mm/year, mean temperature is 10.5 oC (1901-
2000).
Soil characteristics
Volume weight 1530 mg/cm3
Fractions         < 0.2 µm         26.8%
                  6.3-2.0          10.8
                  20-6.3           10.8
                  63-20            54.6
Corg     0.812 %
Norg     0.08 %
pH       7.1
P        2.2 mg/100 gr
K        5.7 mg/100 gr
Mg       9.0 mg/100 gr
Cation exchange capacity 13.9 mval/100 gr.
Experimental design and treatments

Split-plots, 3 replications
Size of plots 48 m2 (6x8)
Factors:              A         nutrients (organic, inorganic)
                      a1 (I)    NPK
                      a2 (II)   NPK+35 t/ha FYM
                      a3 (III)  NPK+straw+green manure+N
                      B         N fertilizers
                                N0 – N4
                                P2O5100, K2O100 in all treatments
Crop rotation: Maize-Winter Wheat-Winter Barley
                     (M) – (WW) – (WB)
FYM plowed in maize (35 t/ha)
Green manure (GM): Raphanus sativus var. Oleiformis
                     2nd crop sowing on barley stubble
Straw (stalk) incorporated into the soil (+1kg N/100 kg DM)
              in the A III at every crops int he rotation
Factor B: N fertilizer kg/ha
                     M                     WW                       WB
N0                    -                      -                       -
N1                    70                    50                       40
N2                   140                   100 (50+50)               80
N3                   210                   150 (50+50+50)      120 (80+40)
N                    280                   200 (100+50+50)     160 (80+40+40)
                      Wheat 1987-2001 (IOSDV)

                 6

                 5
Grain D.M t/ha




                 4
                 3
                 2

                 1
                 0
                     N0           N50       N100        N150            N200
                                            kg/ha
                          I NPK     II NPK+FYM      III NPK+straw+green manure
                           Maize 1987-2001 (IOSDV)

                 10
Grain D.M t/ha



                  8
                  6
                  4
                  2
                  0
                          N0         N70        N140        N210         N280
                                                kg/ha
                                                                          NPK+straw+
                      I        NPK         II     NPK+FYM          III   green manure
                         Barley 1987-2001 (IOSDV)

                 6
Grain D.M t/ha



                 5
                 4
                 3
                 2
                 1
                 0
                      N0      N40           N80        N120           N160
                                            kg/ha
                     I NPK     II NPK+FYM           III NPK+straw+green manure
Table 1 Corg g/kg 2003 Wheat

               N0        N50     N100    N150    N200    Average

     I       19.73       20.80   19.43   18.73   18.96    19.53
    II       24.96       23.93   23.53   23.40   25.36    24.23
    III      22.30       23.43   22.03   20.93   20.40    21.81
ALSD5% 1.68 BLSD5% N.S

Table 2 Corg g/kg 2003 Maize
               N0        N70     N140    N210    N280    Average

     I       21.23       19.83   20.93   19.20   20.56    20.35
    II       24.80       24.46   25.10   23.60   25.36    24.66
    III      24.06       26.20   25.33   25.96   25.93    25.49
ALSD5% 0.93 BLSD5% N.S

Table 3 Corg g/kg 2003 Barley

               N0        N40     N80     N120    N160    Average

     I       16.76       18.63   18.80   17.90   17.26    17.87
    II       19.86       21.70   23.03   22.83   22.53    21.99
    III      16.93       17.40   19.46   20.03   19.00    18.56

ALSD5% 2.01 BLSD5% N.S
Table 4 N g/kg 2003 Wheat

               N0          N50    N100   N150   N200   Average

     I        1.14         1.18   1.16   1.14   1.10    1.14
    II        1.34         1.39   1.47   1.37   1.36    1.39
    III       1.24         1.27   1.27   1.29   1.18    1.25

 ALSD5% 0.062 BLSD5% N.S

Table 5 N g/kg 2003 Maize

               N0          N70    N140   N210   N280   Average

     I        1.19         1.11   1.32   1.13   1.10    1.17
    II        1.36         1.30   1.36   1.31   1.28    1.32
    III       1.25         1.34   1.29   1.32   1.35    1.31
  ALSD5% 0.10 BLSD5% N.S

Table 6 N g/kg 2003 Barley
               N0          N40    N80    N120   N160   Average

     I        1.23         1.28   1.26   1.27   1.25    1.26
    II        1.45         1.42   1.47   1.49   1.52    1.47
    III       1.30         1.33   1.36   1.35   1.25    1.32

 ALSD5% 0.071 BLSD5% N.S
Conclusion

The IOSDV field experiment testing mineral nitrogen fertilizer in
combination with differnet forms of organic manure over period of
20 years (7 crop rotation cycles) has provided specific results
concerning the interaction of the manures.
Int he crop rotation the yield of winter-wheat in the average of years
varied in 2-5.5 t/ha interval. With the organic manuring at the N0
plots yielded 1000 kg/ha grain more compare to the absolute N0 and
have positive effect on yield at the lower N fertilizer level, as well.
Depending ont he amount of N fertilizer the yield of maize were
between 6-8 t/ha and the winter barley 2.8-4.8 t/ha. Int he crop
rotation the FYM, straw and the green manure +N increased the
yield significantly.
The Corg and the Nt values int he soil were significantly influenced
by the FYM and the other organic fertilizers.

								
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