Paper · 2019 · Misr journal of agricultural engineering

INFLUENCE OF IRRIGATION METHOD AND FERTILIZATION TYPE ON AVOCADO YIELD AND QUALITY

W. M. Darwish; A. H. Elmetwalli

7
claims
8
verbatim quotes
5
citations
2
research areas
✓
Open access

Abstract

This research study investigated the impact of watering method and fertilization on avocado yield and quality in newly reclaimed areas. The research attempted to choose the optimum irrigation system and fertilization type to improve avocado yield and quality. Different irrigation systems (micro-sprinkler, drip irrigation and combined approach of micro-sprinkler and drip) with different fertilization types (mineral fertilization, fertilization using fallen avocado leaves+mineral fertilization and fertilization using plant compost +mineral fertilization) were evaluated for enhancing avocado yield and quality. The results showed that using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigation (micro-sprinkler + drip irrigation together) increased total yield, growth rates, water use efficiency compared with the use of mineral fertilization only with micro-sprinkler irrigation or drip irrigation only. Drip irrigation led to higher water use efficiency as a result of less water applied. The highest avocado yields of 21.08 and 14.63 Mg ha-1 for Hass and Ettinger cultivar respectively were obtained from the combination combined irrigation with fallen leaves + mineral in 2016-17 growing season. The same combination produced the highest yield in the second season but with fewer records.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined irrigation and organic plus mineral fertilization increased total yield relative to mineral fertilization with one irrigation method.

Taxon
avocadoPersea americanae0
Treatment
using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigatione0
Outcome
total yielde0
Direction
increasede0
Comparator
mineral fertilization only with micro-sprinkler irrigation or drip irrigation onlye0

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigation (micro-sprinkler + drip irrigation together) increased total yield, growth rates, water use efficiency compared with the use of mineral fertilization only with micro-sprinkler irrigation or drip irrigation only.”

✓ located verbatim in the source · abstract, characters 615–959 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined irrigation and organic plus mineral fertilization increased growth rates relative to mineral fertilization with one irrigation method.

Taxon
avocadoPersea americanae0
Treatment
using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigatione0
Outcome
growth ratese0
Direction
increasede0
Comparator
mineral fertilization only with micro-sprinkler irrigation or drip irrigation onlye0

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigation (micro-sprinkler + drip irrigation together) increased total yield, growth rates, water use efficiency compared with the use of mineral fertilization only with micro-sprinkler irrigation or drip irrigation only.”

✓ located verbatim in the source · abstract, characters 615–959 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined irrigation and organic plus mineral fertilization increased water use efficiency relative to mineral fertilization with one irrigation method.

Taxon
avocadoPersea americanae0
Treatment
using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigatione0
Outcome
water use efficiencye0
Direction
increasede0
Comparator
mineral fertilization only with micro-sprinkler irrigation or drip irrigation onlye0

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The results showed that using fallen avocado leaves and plant compost, with mineral fertilization and the use of combined irrigation (micro-sprinkler + drip irrigation together) increased total yield, growth rates, water use efficiency compared with the use of mineral fertilization only with micro-sprinkler irrigation or drip irrigation only.”

✓ located verbatim in the source · abstract, characters 615–959 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drip irrigation improved water use efficiency through reduced water application.

Treatment
Drip irrigatione0
Outcome
water use efficiencye0
Direction
highere0
Qualifier
less water appliede0

Not reportedTaxonComparator

Verbatim

e0

“Drip irrigation led to higher water use efficiency as a result of less water applied.”

✓ located verbatim in the source · abstract, characters 960–1045 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Hass had highest avocado yield of 21.08 under combined irrigation with fallen leaves and mineral fertilizer in 2016-17.

Taxon
avocadoPersea americanae0
Material
Hasse0
Treatment
combined irrigation with fallen leaves + minerale0
Outcome
avocado yieldse0
Direction
higheste0
Value
21.08e0
Qualifier
2016-17 growing seasone0

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest avocado yields of 21.08 and 14.63 Mg ha-1 for Hass and Ettinger cultivar respectively were obtained from the combination combined irrigation with fallen leaves + mineral in 2016-17 growing season.”

✓ located verbatim in the source · abstract, characters 1046–1254 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Ettinger had highest avocado yield of 14.63 Mg ha-1 under combined irrigation with fallen leaves and mineral fertilizer in 2016-17.

Taxon
avocadoPersea americanae0
Material
Ettingere0
Treatment
combined irrigation with fallen leaves + minerale0
Outcome
avocado yieldse0
Direction
higheste0
Value
14.63 Mg ha-1e0
Qualifier
2016-17 growing seasone0

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest avocado yields of 21.08 and 14.63 Mg ha-1 for Hass and Ettinger cultivar respectively were obtained from the combination combined irrigation with fallen leaves + mineral in 2016-17 growing season.”

✓ located verbatim in the source · abstract, characters 1046–1254 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The same irrigation and fertilizer combination produced the highest yield in the second season, at lower recorded values.

Taxon
AVOCADOPersea americanat0
Outcome
yielde0
Direction
higheste0
Qualifier
second season but with fewer recordse0

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“AVOCADO”

✓ located verbatim in the source · title, characters 57–64 · show in text ↑
e0

“The same combination produced the highest yield in the second season but with fewer records.”

✓ located verbatim in the source · abstract, characters 1255–1347 · show in text ↑

irrigation · physiology: water · Persea americana (avocado)Positive and negative results

5 papers: 3 positive, 2 negative or no effect

2 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

1 paper more in this group

See all 5 papers →

irrigation · growth · Persea americana (avocado)Positive and negative results

6 papers: 4 positive, 2 negative or no effect

3 papers in the same direction as this paper · 2 in the opposite direction

  1. no effect
  2. negative
  3. positive

2 papers more in this group

See all 6 papers →

irrigation · yield · Persea americana (avocado)Positive and negative results

12 papers: 5 positive, 7 negative or no effect

4 papers in the same direction as this paper · 7 in the opposite direction

  1. no effect
  2. negative
  3. negative

8 papers more in this group

See all 12 papers →

fertilization · growth · Persea americana (avocado)Positive and negative results

13 papers: 9 positive, 4 negative or no effect

8 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. no effect
  3. no effect

9 papers more in this group

See all 13 papers →

fertilization · yield · Persea americana (avocado)Positive and negative results

14 papers: 10 positive, 4 negative or no effect

9 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. no effect
  3. no effect

10 papers more in this group

See all 14 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.