Paper · 2019 · Journal of Soil Sciences and Agricultural Engineering /Journal of Soil Sciences and Agricultural Engineering

The Influence of Applying some Stimulating Agents and Humic Acid on Productivity and Quality of Cassava Plants under Loamy Sandy Soil

Mona Abdel-Razek; Gehan Abel Aziz; Shreen Ahmed

11
claims
13
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

The effect of using some foliar spray stimulating agents (amino acids, potassium humate, micro-nutrients), as a spray application with humic acid and mineral fertilizers on yield and quality of Cassava plants (Indonesian, cv.) was studied. Moreover, the need for installation of drainage system was also investigated to maintain both soil salinity and water table in safe limits for plants. A field experiment was carried out at Al-Kassaseen Research Station – Ismailia Governorate, Egypt. The experiment was conducted during the two summer seasons 2017 and 2018. Mineral fertilizer was used as a recommended dose with or without humic acid and with or without foliar spray stimulating agents (amino acids, potassium humate, micro-nutrients).The experiment included eight treatments. The obtained results indicated that the maximum productivity of Cassava tubers was observed with mineral fertilizer with humic acid and stimulating agents compared to control. Total yield of tuber fresh weights and dry matter % of Cassava had the following decreasing order:MHP > MHA> MHN >MP >MH> MN > MA > M. Moreover, a pronounced increase in tubers quality with (dry matter, starch, total sugar, crud protein and vitamin C) and nutrient contents (N, K, P, Zn, Mn, Fe and Cu) of Cassava tubers was noticed with the application of foliar stimulating agents under mineral fertilizer with humic acid compared to control.The results showed also a decrease in soil salinity compared with the control (M) for different treatments of the study after harvesting Cassava according to the following order :MH > MHA or MHP > MHN >MP >MA >MN. The recommended calculated drain spacing in this area according to measured field data is 100 m spacing between drains and the recommended drain depth is 1.2 m.

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Claims 11

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mineral fertilizer with humic acid and stimulating agents gave maximum cassava tuber productivity versus control.

Treatment
mineral fertilizer with humic acid and stimulating agentse0
Outcome
productivity of Cassava tuberse0
Direction
maximume0
Comparator
controle0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“maximum productivity of Cassava tubers was observed with mineral fertilizer with humic acid and stimulating agents compared to control”

✓ located verbatim in the source · abstract, characters 824–958 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cassava tuber fresh weight yield followed MHP > MHA > MHN > MP > MH > MN > MA > M.

Outcome
Total yield of tuber fresh weightse0
Direction
decreasinge0
Qualifier
MHP > MHA> MHN >MP >MH> MN > MA > Me0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Total yield of tuber fresh weights and dry matter % of Cassava had the following decreasing order:MHP > MHA> MHN >MP >MH> MN > MA > M”

✓ located verbatim in the source · abstract, characters 960–1093 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cassava tuber dry matter percentage followed MHP > MHA > MHN > MP > MH > MN > MA > M.

Outcome
dry matter % of Cassavae0
Direction
decreasinge0
Qualifier
MHP > MHA> MHN >MP >MH> MN > MA > Me0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“Total yield of tuber fresh weights and dry matter % of Cassava had the following decreasing order:MHP > MHA> MHN >MP >MH> MN > MA > M”

✓ located verbatim in the source · abstract, characters 960–1093 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar agents with mineral fertilizer and humic acid increased tuber dry matter, starch, and total sugar versus control.

Treatment
application of foliar stimulating agents under mineral fertilizer with humic acide0
Outcome
dry matter, starch, total sugare0
Direction
increasee0
Comparator
controle0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“a pronounced increase in tubers quality with (dry matter, starch, total sugar, crud protein and vitamin C) and nutrient contents (N, K, P, Zn, Mn, Fe and Cu) of Cassava tubers was noticed with the application of foliar stimulating agents under mineral fertilizer with humic acid compared to control”

✓ located verbatim in the source · abstract, characters 1105–1403 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same treatment increased tuber crude protein and vitamin C versus control.

Treatment
application of foliar stimulating agents under mineral fertilizer with humic acide0
Outcome
crud protein and vitamin Ce0
Direction
increasee0
Comparator
controle0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“a pronounced increase in tubers quality with (dry matter, starch, total sugar, crud protein and vitamin C) and nutrient contents (N, K, P, Zn, Mn, Fe and Cu) of Cassava tubers was noticed with the application of foliar stimulating agents under mineral fertilizer with humic acid compared to control”

✓ located verbatim in the source · abstract, characters 1105–1403 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same treatment increased tuber N, K, and P contents versus control.

Treatment
application of foliar stimulating agents under mineral fertilizer with humic acide0
Outcome
nutrient contents (N, K, Pe0
Direction
increasee0
Comparator
controle0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“a pronounced increase in tubers quality with (dry matter, starch, total sugar, crud protein and vitamin C) and nutrient contents (N, K, P, Zn, Mn, Fe and Cu) of Cassava tubers was noticed with the application of foliar stimulating agents under mineral fertilizer with humic acid compared to control”

✓ located verbatim in the source · abstract, characters 1105–1403 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same treatment increased tuber Zn, Mn, and Fe contents versus control.

Treatment
application of foliar stimulating agents under mineral fertilizer with humic acide0
Outcome
Zn, Mn, Fee0
Direction
increasee0
Comparator
controle0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“a pronounced increase in tubers quality with (dry matter, starch, total sugar, crud protein and vitamin C) and nutrient contents (N, K, P, Zn, Mn, Fe and Cu) of Cassava tubers was noticed with the application of foliar stimulating agents under mineral fertilizer with humic acid compared to control”

✓ located verbatim in the source · abstract, characters 1105–1403 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same treatment increased tuber Cu content versus control.

Treatment
application of foliar stimulating agents under mineral fertilizer with humic acide0
Outcome
Cue0
Direction
increasee0
Comparator
controle0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“a pronounced increase in tubers quality with (dry matter, starch, total sugar, crud protein and vitamin C) and nutrient contents (N, K, P, Zn, Mn, Fe and Cu) of Cassava tubers was noticed with the application of foliar stimulating agents under mineral fertilizer with humic acid compared to control”

✓ located verbatim in the source · abstract, characters 1105–1403 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Treatments decreased postharvest soil salinity relative to M.

Treatment
different treatments of the studye0
Outcome
soil salinitye0
Direction
decreasee0
Qualifier
MH > MHA or MHP > MHN >MP >MA >MNe0
Comparator
control (M)e0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“a decrease in soil salinity compared with the control (M) for different treatments of the study after harvesting Cassava according to the following order :MH > MHA or MHP > MHN >MP >MA >MN”

✓ located verbatim in the source · abstract, characters 1428–1616 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Calculated recommended drain spacing was 100 m.

Outcome
drain spacinge0
Value
100 me0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“recommended calculated drain spacing in this area according to measured field data is 100 m spacing between drains”

✓ located verbatim in the source · abstract, characters 1622–1736 · show in text ↑
t0

“Cassava Plants”

✓ located verbatim in the source · title, characters 96–110 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Recommended drain depth was 1.2 m.

Outcome
drain depthe0
Value
1.2 me0

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

Manihot esculenta
Manihot esculenta · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

e0

“recommended drain depth is 1.2 m”

✓ located verbatim in the source · abstract, characters 1745–1777 · show in text ↑
t0

“Cassava Plants”

✓ located verbatim in the source · title, characters 96–110 · show in text ↑

other · yield · Manihot esculenta (cassava)Positive and negative results

9 papers: 8 positive, 1 negative or no effect

7 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

fertilization · quality: sugar starch · Manihot esculenta (cassava)Positive and negative results

26 papers: 22 positive, 4 negative or no effect

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

  1. negative
  2. no effect
  3. no effect

22 papers more in this group

See all 26 papers →

fertilization · nutrient: content · Manihot esculenta (cassava)Positive and negative results

42 papers: 39 positive, 3 negative or no effect

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

  1. no effect
  2. no effect
  3. negative

38 papers more in this group

See all 42 papers →

fertilization · yield · Manihot esculenta (cassava)Positive and negative results

153 papers: 141 positive, 12 negative or no effect

140 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

149 papers more in this group

See all 153 papers →

application · nutrient: content · Manihot esculenta (cassava)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

other · quality: sugar starch · Manihot esculenta (cassava)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

other · nutrient: content · Manihot esculenta (cassava)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

fertilization · quality: protein · Manihot esculenta (cassava)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.