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Effects of farmyard manure compost and biodynamic preparations

Long-term trial at IBDF Darmstadt (since 1980)


1980-1984 Fertilizer and nutrient amounts

First period (research focus: Food quality)


The table shows the nutrient amounts (kg ha-1) applied yearly with the mineral treatment (MIN) and the manure amounts (dt ha-1) applied with the organic treatments (CM, CMBD) in the years 1981 - 84. All amounts represent the medium level only. The amounts at the low, medium and high levels correspond to 50%, 100% and 150% , resp. (in CM and CMBD based on manure and in MIN based on nitrogen).

Crop
Fertilizer type, year
N / P2O5 / K2O (kg ha-1) Composted manure (dt ha-1)
Rye MIN, 81-84 100 / 75 / 100  
CM, CMBD, 81+82   400 dt ha-1
CM, CMBD, 83   240 dt ha-1  manure + 14,4 m3 ha-1 liquid manure
CM, CMBD, 84   100 kg N ha-1 as castor meal
Carrots MIN, 81-84 120 / 90 / 200  
CM, CMBD, 81+82   480 dt ha-1
CM, CMBD, 83   360 dt ha-1
CM, CMBD, 84   0 dt ha-1
Beetroot MIN, 81-84 160 / 90 / 150  
CM, CMBD, 81+82   640 dt ha-1
CM, CMBD, 83   480 dt ha-1

 

CM, CMBD, 84   320 dt ha-1
Potatoes MIN, 81-84 120 / 100 / 160  
CM, CMBD, 81+82   480 dt ha-1
CM, CMBD, 83   360 dt ha-1
CM, CMBD, 84   240 dt ha-1 manure + 40 kg N ha-1 as horn meal
Reference: ABELE (1987)


The main objective of fertilization in this period was to realize equivalent yields with organic (CM) and mineral (MIN) fertilization at each input level.

 

    Rye Carrots Beetroot Potatoes
MIN

1981-84

1
2
3
50
100
150
60
120
180
80
160
240
60
120
180
CM / CMBD

1981

1
 2
3
80
160
240
96
192
288
128
 256
384
96
192
288
CM / CMBD

1982

1
 2
3
96
192
288
115
230
346
186
 371
557
84
 168
252
CM / CMBD

1983

1
2
3
98
196
294
117
234
351
72
144
216
54
108
162
CM / CMBD

1984

1
2
3
50
100
150
0
0
0
90
179
269
87
174
262
  

The table shows the nitrogen amounts (kg N ha-1) applied with mineral fertilizer (MIN) and composted manure (CM, CMBD) at 3 nutrient input levels (calculated with data of Abele, 1987).

 













                                                   Reference: ABELE (1987)


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