Abstract
The experiment was carried out between 2005 – 2008 at Ezareni – The Experimental Farm of the Agricultural University of Iasi, in the East side of Romania (4707’ N latitude, 2730’E longitude), on a cambic chernozem (SRTS2003), or haplic chernozems (WRB-SR, 1998), with a clay-loamy texture, 6.8 pH, 2.7% humus content and a medium level of fertilization. The experimental area has an annual average temperature of 9.4C and precipitation of 587 mm. The experiment was a “split plot” design with three replicates. Plots covered an area of 60 m with a rotation of soybean winter wheat maize. The maize mean yield values showed significant differences in plots plowed at 20 cm and very significant results in the disc harrow treatment when compared to the control treatment. These findings confirm that increasing tillage depth result in higher yields. In disc harrow plots, the mean yield over three years was 4532 kg/ha while the conventional tillage variant (plowed at 20 cm) yield recorded 5528 kg/ha. The highest yield of 6482 kg/ha was recorded in the control treatment (plowed at 30 cm). The conservation variants, chisel and paraplow, resulted in intermediate yields between disc harrow and the control treatment, the differences being statistically nonsignificant.
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Claims 4
Claim · model-written summary
Disc harrowing yielded 4532 kg/ha over three years, below the 30 cm plowed control.
- Treatment
- disc harrowe0
- Outcome
- mean yielde0
- Direction
- highere1
- Value
- 4532 kg/hae0
- Comparator
- plowed at 30 cme0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In disc harrow plots, the mean yield over three years was 4532 kg/ha while the conventional tillage variant (plowed at 20 cm) yield recorded 5528 kg/ha. The highest yield of 6482 kg/ha was recorded in the control treatment (plowed at 30 cm).”
e1“increasing tillage depth result in higher yields”
t0“maize crop”
Claim · model-written summary
Plowing at 20 cm yielded 5528 kg/ha, below the 30 cm plowed control.
- Treatment
- plowed at 20 cme0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 5528 kg/hae0
- Comparator
- plowed at 30 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the conventional tillage variant (plowed at 20 cm) yield recorded 5528 kg/ha. The highest yield of 6482 kg/ha was recorded in the control treatment (plowed at 30 cm).”
t0“maize crop”
Claim · model-written summary
Chisel tillage produced intermediate maize yields, with a nonsignificant difference from the 30 cm plowed control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The conservation variants, chisel and paraplow, resulted in intermediate yields between disc harrow and the control treatment, the differences being statistically nonsignificant.”
t0“maize crop”
Claim · model-written summary
Paraplow produced intermediate maize yields, with a nonsignificant difference from the 30 cm plowed control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The conservation variants, chisel and paraplow, resulted in intermediate yields between disc harrow and the control treatment, the differences being statistically nonsignificant.”
t0“maize crop”
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