Paper · 2012

Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran

Mohammad Sarhadi; Saeed Mohammadi; Mohammad Mehdi Rashidi

20
claims
40
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

3 Abstract: Field experiments were conducted to study the response of grain yield and yield components of corn (Zea mays L.) to different methods in the arid lands of Iran. Tillage treatments in the study were moldboard plow + two passes of disk harrow (MDD), moldboard plow + one pass of rotary tiller (MR), two passes of disk harrow (DD), one pass of tine cultivator + one pass of disk harrow (CD), one pass of rotary tiller (R), one pass of tine cultivator (C) and no-tillage (NT) as direct drilling method. The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL). The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment. Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment. Hence, moldboard plow followed two passes of disk harrow was found to be more appropriate and profitable tillage method in improving grain yield of corn in the arid lands of Iran possibly due to reduced soil compaction, enhanced seed-soil contact, increased soil moisture and suppressing weed growth.

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Claims 20

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tillage method significantly affected corn grain yield.

Treatment
tillage methode0
Outcome
grain yielde0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tillage method significantly affected corn number of plants per hectare (NPPH).

Treatment
tillage methode0
Outcome
number of plants per hectare (NPPH)e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Tillage method significantly affected corn number of rows per ear (NRPE).

Treatment
tillage methode0
Outcome
number of rows per ear (NRPE)e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tillage methods did not differ significantly in corn number of ears per plant (NEPP).

Treatment
tillage methode0
Outcome
number of ears per plant (NEPP)e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tillage methods did not differ significantly in corn number of grains per row (NGPR).

Treatment
tillage methode0
Outcome
number of grains per row (NGPR)e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tillage methods did not differ significantly in corn ear diameter (ED).

Treatment
tillage methode0
Outcome
ear diameter (ED)e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tillage methods did not differ significantly in corn ear length (EL).

Treatment
tillage methode0
Outcome
ear length (EL)e0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The statistical results of the study indicated that tillage method significantly (P 0.05) affected grain yield, number of plants per hectare (NPPH) and number of rows per ear (NRPE), but there was no significant differences in other components such as number of ears per plant (NEPP), number of grains per row (NGPR), ear diameter (ED) and ear length (EL).”

✓ located verbatim in the source · abstract, characters 511–867 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

MDD gave the maximum corn grain yield (4.15 t ha).

Treatment
MDDe0
Outcome
grain yielde0
Direction
maximume0
Value
4.15 t hae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

MDD gave the maximum corn NPPH (39830).

Treatment
MDDe0
Outcome
NPPHe0
Direction
maximume0
Value
39830e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

MDD gave the maximum corn NEPP (0.92).

Treatment
MDDe0
Outcome
NEPPe0
Direction
maximume0
Value
0.92e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

MR gave the maximum corn NRPE (14.9).

Treatment
MRe0
Outcome
NRPEe0
Direction
maximume0
Value
14.9e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

MR gave the maximum corn ED (37.2 mm).

Treatment
MRe0
Outcome
EDe0
Direction
maximume0
Value
37.2 mme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

R gave the maximum corn NGPR (51).

Treatment
Re0
Outcome
NGPRe0
Direction
maximume0
Value
51e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

NT gave the maximum corn EL (196.3 mm).

Treatment
NTe0
Outcome
ELe0
Direction
maximume0
Value
196.3 mme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“The maximum value of grain yield (4.15 t ha ), NPPH (39830) and NEPP (0.92) was obtained in case of MDD treatment, while maximum 1 value of NRPE (14.9) and ED (37.2 mm) was observed in case of MR treatment. Also, maximum value of NGPR (51) was obtained in case of R treatment, while maximum value of EL (196.3 mm) was observed in case of NT treatment.”

✓ located verbatim in the source · abstract, characters 868–1219 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

NT gave the minimum corn grain yield (2.32 t ha).

Treatment
NTe0
Outcome
grain yielde0
Direction
minimume0
Value
2.32 t hae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment.”

✓ located verbatim in the source · abstract, characters 1220–1583 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

NT gave the minimum corn NPPH (20390).

Treatment
NTe0
Outcome
NPPHe0
Direction
minimume0
Value
20390e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment.”

✓ located verbatim in the source · abstract, characters 1220–1583 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

C gave the minimum corn NEPP (0.89).

Treatment
Ce0
Outcome
NEPPe0
Direction
minimume0
Value
0.89e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment.”

✓ located verbatim in the source · abstract, characters 1220–1583 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

R gave the minimum corn NRPE (13.4).

Treatment
Re0
Outcome
NRPEe0
Direction
minimume0
Value
13.4e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment.”

✓ located verbatim in the source · abstract, characters 1220–1583 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

MDD gave the minimum corn NGPR (47).

Treatment
MDDe0
Outcome
NGPRe0
Direction
minimume0
Value
47e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment.”

✓ located verbatim in the source · abstract, characters 1220–1583 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

MDD gave the minimum corn ED (35.2 mm).

Treatment
MDDe0
Outcome
EDe0
Direction
minimume0
Value
35.2 mme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Response of Grain Yield and Yield Components of Corn to Different Tillage Methods in the Arid Lands of Iran”

✓ located verbatim in the source · title, characters 0–107 · show in text ↑
e0

“Conversely, the minimum value of grain yield (2.32 t ha ) and NPPH (20390) was obtained in case 1 of NT treatment, while minimum value of NEPP (0.89) was observed in case of C treatment. Moreover, minimum value of NRPE (13.4) was obtained in case of R treatment, while minimum value of NGPR (47), ED (35.2 mm) and EL (190.7 mm) was noted in case of MDD treatment.”

✓ located verbatim in the source · abstract, characters 1220–1583 · show in text ↑

tillage · yield · Zea mays (maize)Positive and negative results

1,099 papers: 812 positive, 287 negative or no effect

286 papers in the same direction as this paper · 812 in the opposite direction

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  3. positive

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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.