Effects of cover crops and tillage methods on selected physical and water retention properties of Luvisol · Knowledge Library

BonaResKnowledge Library

Effects of cover crops and tillage methods on selected physical and water retention properties of Luvisol · Knowledge Library

soil moisture at pF 2.5

↑ 1↓ 12

increase
cover crops (FP and WM variants) vs. without cover crop (WCC)significant · 15–15 cm · 2019 just before wheat harvest · Zakład Doświadczalno-Dydaktyczny Brody · Ap horizon; pF 2.5. FP and WM separately versus WCC, means across tillage methods. Each pair has distinct LSD letters at .05; no pooled contrast. Statistically significant but small practical changes.
Numbers
- treatment 13.6 vs. control 13.2 % v. (+3.03 %) · 15–15 cm · FP versus WCC; pF 2.5; marginal across tillages, b/c.
- treatment 14.2 vs. control 13.2 % v. (+7.576 %) · 15–15 cm · WM versus WCC; pF 2.5; marginal across tillages, a/c.
Source · p. 8
“At the tested potentials, most of the average soil moistures found in the WCC variant differed from those of the FP and WM variants.”
Source · p. 9
“| Mean WCC | 19.8c 13.2c 10.8b | 6.2b | 2.8c 9.0b | 13.6c |”
Source · p. 9
“| FP | 20.9b 13.6b 11.5a | 6.7a | 3.4a 9.4b | 14.2b |”
Source · p. 9
“| WM | 22.2a 14.2a 11.5a | 6.1b | 3.0b 10.7a | 16.1a |”
decrease
simplified cultivation (RT, ST and NT variants) vs. conventional plough tillage (CT)significant · 15–15 cm · 2019 just before wheat harvest · Zakład Doświadczalno-Dydaktyczny Brody · Ap horizon; pF 2.5. RT, ST and NT separately versus CT, marginal across cover crops. Each LSD b/a comparison significant; no pooled test; small practical changes.
Numbers
- treatment 13.7 vs. control 14.1 % v. (-2.837 %) · 15–15 cm · RT versus CT; pF 2.5; marginal across cover crops, b/a.
- treatment 13.4 vs. control 14.1 % v. (-4.965 %) · 15–15 cm · ST versus CT; pF 2.5; marginal across cover crops, b/a.
- treatment 13.5 vs. control 14.1 % v. (-4.255 %) · 15–15 cm · NT versus CT; pF 2.5; marginal across cover crops, b/a.
Source · p. 10
“The highest contents of all analysed moistures were noticeable in the CT variant and for pF 2.0, 2.5, 3.7, 4.2, and 4.5 they were 21.9, 14.1, 11.8, 6.7 and 3.3% v., respectively.”
Source · p. 9
“| RT | 20.9b 13.7b 11.2b | 6.1bc | 3.1a 9.7ab | 14.8ab |”
Source · p. 9
“| ST | 20.4c 13.4b 10.8c | 6.0c | 2.7b 9.5b | 14.3b |”
Source · p. 9
“| NT 20.8bc | 13.5b 11.2b | 6.5ab | 3.2a 9.5b | 14.3b |”

refill point (RP; pF 3.7) moisture

↑ 1↓ 12

increase
cover crops (FP and WM variants) vs. without cover crop (WCC)significant · 15–15 cm · 2019 just before wheat harvest · Zakład Doświadczalno-Dydaktyczny Brody · Ap horizon; refill point pF 3.7. FP and WM separately versus WCC, marginal across tillages. Individual LSD a/b comparisons, not a pooled test; small practical changes.
Numbers
- treatment 11.5 vs. control 10.8 % v. (+6.481 %) · 15–15 cm · FP versus WCC; pF 3.7; marginal across tillages, a/b.
- treatment 11.5 vs. control 10.8 % v. (+6.481 %) · 15–15 cm · WM versus WCC; pF 3.7; marginal across tillages, a/b.
Source · p. 8
“At the tested potentials, most of the average soil moistures found in the WCC variant differed from those of the FP and WM variants.”
Source · p. 9
“| Mean WCC | 19.8c 13.2c 10.8b | 6.2b | 2.8c 9.0b | 13.6c |”
Source · p. 9
“| FP | 20.9b 13.6b 11.5a | 6.7a | 3.4a 9.4b | 14.2b |”
Source · p. 9
“| WM | 22.2a 14.2a 11.5a | 6.1b | 3.0b 10.7a | 16.1a |”
decrease
simplified cultivation (RT, ST and NT variants) vs. conventional plough tillage (CT)significant · 15–15 cm · 2019 just before wheat harvest · Zakład Doświadczalno-Dydaktyczny Brody · Ap horizon; refill point pF 3.7. RT, ST and NT separately versus CT, marginal across cover crops. Each LSD comparison significant (b/a, c/a, b/a); no pooled test; small practical changes.
Numbers
- treatment 11.2 vs. control 11.8 % v. (-5.085 %) · 15–15 cm · RT versus CT; pF 3.7; marginal across cover crops, b/a.
- treatment 10.8 vs. control 11.8 % v. (-8.475 %) · 15–15 cm · ST versus CT; pF 3.7; marginal across cover crops, c/a.
- treatment 11.2 vs. control 11.8 % v. (-5.085 %) · 15–15 cm · NT versus CT; pF 3.7; marginal across cover crops, b/a.
Source · p. 10
“The highest contents of all analysed moistures were noticeable in the CT variant and for pF 2.0, 2.5, 3.7, 4.2, and 4.5 they were 21.9, 14.1, 11.8, 6.7 and 3.3% v., respectively.”
Source · p. 9
“| RT | 20.9b 13.7b 11.2b | 6.1bc | 3.1a 9.7ab | 14.8ab |”
Source · p. 9
“| ST | 20.4c 13.4b 10.8c | 6.0c | 2.7b 9.5b | 14.3b |”
Source · p. 9
“| NT 20.8bc | 13.5b 11.2b | 6.5ab | 3.2a 9.5b | 14.3b |”

Sites

Zakład Doświadczalno-Dydaktyczny Brody

Location: Zakład Doświadczalno-Dydaktyczny Brody, central Poland52.43° N, 16.28° E
Soil: Albic Luvisol (Epiarenic, Cutanic, Ochric) · WRB
Land use: spring wheat plotsArable land
Management on the whole site: Spring wheatWheat/Triticum aestivum

Soil layers
Depth	Texture	Clay	pH	Organic C	Bulk density
15–15 cm	Loamy Sand	4–5 %	–	–	–