Paper · 2019 · Water

Maize Yield and Irrigation Applied in Conservation and Conventional Tillage at Various Plant Densities

Anna Orfanou; Dimitrios Pavlou; Wesley M. Porter

5
claims
9
verbatim quotes
14
citations
1
research areas
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Open access · cc-by

Abstract

Maize is one of the most highly produced crops around the world. Factors such as population density, solar radiation, temperature, availability of nutrients and water, and proper tillage method can have favorable results in increasing yield. This project began in 2015, at two different locations in Georgia (Tifton and Camilla), GA, USA, and has been evaluated for three consecutive maize growing seasons. In each location, a different irrigation method was applied; the University of Georgia (UGA) maize checkbook method was utilized in Tifton and a soil moisture sensor-based method was utilized in Camilla. The different treatments consisted of two tillage methods, conservation and conventional, and four plant densities (69K, 88K, 99K, and 133K plants/ha). The purpose of the project was the evaluation of water requirements by population and tillage method for achieving high maize yields. Soil moisture information was collected hourly in both fields. The results showed that higher plant densities do not necessarily require higher irrigation amounts and do not always have the best results in terms of yield. Conventional tillage had slightly better yield results but not statistically different from conservation tilled plots. Additionally, the results showed that applied irrigation can help in higher maize production. However, increasing the amount of water does not directly equate to higher yield results.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher plant densities did not necessarily require higher irrigation amounts.

Taxon
MaizeZea mayst0
Treatment
higher plant densitiese0
Outcome
irrigation amountse0
Direction
do not necessarily require highere0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“higher plant densities do not necessarily require higher irrigation amounts”

✓ located verbatim in the source · abstract, characters 984–1059 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 0–5 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher plant densities did not always produce the best yield.

Taxon
MaizeZea mayst0
Treatment
higher plant densitiese0
Outcome
yielde0
Direction
do not always have the beste0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“higher plant densities do not necessarily require higher irrigation amounts and do not always have the best results in terms of yield.”

✓ located verbatim in the source · abstract, characters 984–1118 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 0–5 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Conventional tillage gave slightly better yields than conservation tillage, with no statistically significant difference.

Taxon
MaizeZea mayst0
Treatment
Conventional tillagee0
Outcome
yielde0
Direction
slightly bettere0
Comparator
conservation tilled plotse0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Conventional tillage had slightly better yield results but not statistically different from conservation tilled plots.”

✓ located verbatim in the source · abstract, characters 1119–1237 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 0–5 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Applied irrigation could increase maize production.

Taxon
maizeZea mayse0
Treatment
applied irrigatione0
Outcome
maize productione0
Direction
highere0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“applied irrigation can help in higher maize production.”

✓ located verbatim in the source · abstract, characters 1276–1331 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing water amount did not directly equate to higher maize yield.

Taxon
MaizeZea mayst0
Treatment
increasing the amount of watere0
Outcome
yielde0
Direction
does not directly equate to highere0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“increasing the amount of water does not directly equate to higher yield results.”

✓ located verbatim in the source · abstract, characters 1341–1421 · show in text ↑
t0

“Maize”

✓ located verbatim in the source · title, characters 0–5 · show in text ↑

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

1,016 papers: 791 positive, 225 negative or no effect

790 papers in the same direction as this paper · 209 in the opposite direction · 16 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

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

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

811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative

  1. no effect
  2. positive
  3. positive

1,095 papers more in this group

See all 1,099 papers →

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.