the effect of reduced tillage methods on physical characteristics of the soil and organic matter...
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THE EFFECT OF REDUCED TILLAGE METHODS ON THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC
MATTER CYCLESMATTER CYCLES
Huzsvai László – Rátonyi Tamás – Megyes Attila-Huzsvai László – Rátonyi Tamás – Megyes Attila-Sulyok DénesSulyok Dénes
IV. ALPS-ADRIA CONERENCEIV. ALPS-ADRIA CONERENCE
2 March 2005 2 March 2005 PortorozPortoroz
UNIVERSITY OF DEBRECENUNIVERSITY OF DEBRECENCENTRE OF AGRICULTURAL SCIENCESCENTRE OF AGRICULTURAL SCIENCES
DEPARTMENT OF LAND USEDEPARTMENT OF LAND USE
Soil TillageSoil Tillage
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
Arrangement of the long-term tillage experimentArrangement of the long-term tillage experiment
Winter plowingWinter plowing
Spring plowingSpring plowing
Reduced tillageReduced tillage
FertilizationFertilization
Arrangement of the long-term tillage experimentArrangement of the long-term tillage experiment
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLESTHE SOIL AND ORGANIC MATTER CYCLES
0 kg N/ha0 kg N/ha
120 kg N/ha120 kg N/ha
240 kg N/ha240 kg N/ha
SIMULATIONMODEL
Simulation of plantgrowth and
development
Simulation of soilwater content
Simulation of soil andplant N-content
Graphic program Data analysis
USERS
Weatherinput data
Experimentalinput data
Soil inputdata
Geneticparameters
Main components of the DSSATMain components of the DSSAT
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLESTHE SOIL AND ORGANIC MATTER CYCLES
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
AAvailable water content of the 110 cm soil profilevailable water content of the 110 cm soil profile
(Long-term tillage experiment, 2000-2003)(Long-term tillage experiment, 2000-2003)
1 11
21
31
41
51
61
71
81
91 101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311
321
331
341
351
361
day
50
100
150
200
mm
Sowing
Flowering
2000
2001
2002
2003
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
Physical characteristics of the soil in the reduced Physical characteristics of the soil in the reduced tillage and the winter plowing treatmentstillage and the winter plowing treatments
Depth(cm)
DUL Bulk density Organic mattercontent
pH
(cm3*cm-3) (g*cm-3) % % (water)ReducedTillage
Winterplowing
ReducedTillage
WinterPlowing
5 0.290 1.33 1.38 2.00 1.99 6.515 0.290 1.62 1.42 2.00 1.99 6.530 0.290 1.39 1.45 1.98 1.95 6.745 0.270 1.37 1.29 2.00 2.00 7.060 0.265 1.33 1.24 1.41 1.40 8.090 0.260 1.25 1.25 1.15 1.05 8.1120 0.255 1.20 1.20 0.58 0.57 8.1140 0.250 1.20 1.20 0.27 0.26 8.2160 0.260 1.20 1.21 0.20 0.20 8.2180 0.265 1.25 1.25 0.15 0.16 8.4200 0.285 1.25 1.25 0.11 0.12 8.4
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
The formation of nitrogen cycle in the period of 2000-The formation of nitrogen cycle in the period of 2000-20032003
(winter plowing 120 kg N/ha)(winter plowing 120 kg N/ha)
Initial, 2000 DOY 2 Balance Final, 2003 DOY 300
Soil Organic N 22 700 22 648Initial Residue N 24 71Soil NO3 304 236Soil NH4 98 16Leached NO3 - 29N Denitrified - 11Fertilizer N 480Organic Added (residue) 275N Uptake from Soil - 870Total N 23 126 - 155 22 971
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
21500
22000
22500
23000
23500
24000
Reducedtillage 0kgN/ha
Reducedtillage 120
kgN/ha
Convetionaltillage 0kgN/ha
Convetionaltillage 120
kgN/ha
kg N
ha-1
Amount of total nitrogen in the soil Amount of total nitrogen in the soil
(Long-term tillage experiment, 2000-2003)(Long-term tillage experiment, 2000-2003) 2000
2003
2000 2003
2000
2003
20002003
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
Amount of leached nitrogenAmount of leached nitrogen
(Long-term tillage experiment, 2000-2003)(Long-term tillage experiment, 2000-2003)
0
5
10
15
20
25
30
35
Reducedtillage 0kgN/ha
Reducedtillage 120
kgN/ha
Convetionaltillage 0kgN/ha
Convetionaltillage 120
kgN/ha
kg N
/ha
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
0
5
10
15
20
25
30
Reducedtillage 0kgN/ha
Reducedtillage 120
kgN/ha
Convetionaltillage 0kgN/ha
Convetionaltillage 120
kgN/ha
kg N
ha-1
Denitrified Nitrogen Denitrified Nitrogen
(Long-term tillage experiment, 2000-2003)(Long-term tillage experiment, 2000-2003)
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
Nitrogen balanceNitrogen balance
(Long-term tillage experiment, 2000-2003)(Long-term tillage experiment, 2000-2003)
-350
-300
-250
-200
-150
-100
-50
0Reducedtillage 0kgN/ha
Reducedtillage 120
kgN/ha
Convetionaltillage 0kgN/ha
Convetionaltillage 120
kgN/ha
kg N
ha-1
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
Average maize yield in conventional and reduced Average maize yield in conventional and reduced tillage treatmentstillage treatments
(Long-term tillage experiment, 2000-2003)(Long-term tillage experiment, 2000-2003)
cultivation
reduce tillagew inter plow ing
yie
ld t
/ha
9
8
7
6
5
4
3
Fertilization
non fertilized
120 N kg/ha
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
ConclusionsConclusions Nitrogen leaching was bigger in Nitrogen leaching was bigger in the the winter plowing winter plowing treatment, while denitrification was stronger in treatment, while denitrification was stronger in reduced tillage plotsreduced tillage plots Fertilization has increased nitrogen leaching and Fertilization has increased nitrogen leaching and denitrification denitrification
Organic matter content of the soil in Organic matter content of the soil in the the fertilized, fertilized, reduced tillage treatment reduced tillage treatment diddid not change during the not change during the four year periodfour year period
THE EFFECT OF REDUCED TILLAGE METHODS ON PHYSICAL CHARACTERISTICS OF THE SOIL AND ORGANIC MATTER CYCLES
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