Paper · 2015 · Communications in Soil Science and Plant Analysis

Soil Test and Plant Tissue Analysis as Diagnostic Tools for Fertilizer Recommendations for Cassava in an Ultisol

Susan John Kuzhivilayil; Chandra Sekhara Ravindran; James George

3
claims
6
verbatim quotes
3
citations
2
research areas
—
Not open access

Abstract

Soil- and plant-based fertilizer recommendations hold promise for increasing farmers’ incomes with high-input crops such as cassava. Considering the significance of cassava for the food, nutritional, and economic security of a half billion people globally and the positive response of the crop to fertilizer and manure applications in terms of tuber yield and quality through starch improvement and cyanogenic glucoside reduction, these recommendations were validated and popularized in two districts of Kerala State. Soil and plant samples from nine major cassava-growing districts of Kerala were analyzed for soil reaction, organic carbon, and essential nutrients, which formed the basis for the recommendation. The soil-test-based recommendation [nitrogen (N)–phosphorus (P)–potassium (K)–zinc (Zn) at 82:6.3:68:2 kg ha−1 along with farmyard manure (FYM) at 6.25 t ha−1] resulted in the greatest benefit–cost ratio of 1.75 with improvements in tuber and soil quality.

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Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The soil-test-based fertiliser recommendation produced the greatest benefit–cost ratio, 1.75, for cassava.

Treatment
nitrogen (N)–phosphorus (P)–potassium (K)–zinc (Zn) at 82:6.3:68:2 kg ha−1 along with farmyard manure (FYM) at 6.25 t ha−1e0
Outcome
benefit–cost ratioe0
Direction
greateste0
Value
1.75e0

Not reportedComparator

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

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

Verbatim

t0

“Cassava”

✓ located verbatim in the source · title, characters 91–98 · show in text ↑
e0

“The soil-test-based recommendation [nitrogen (N)–phosphorus (P)–potassium (K)–zinc (Zn) at 82:6.3:68:2 kg ha−1 along with farmyard manure (FYM) at 6.25 t ha−1] resulted in the greatest benefit–cost ratio of 1.75 with improvements in tuber and soil quality.”

✓ located verbatim in the source · abstract, characters 714–970 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The soil-test-based recommendation improved cassava tuber quality.

Treatment
soil-test-based recommendatione0
Outcome
tubere0
Direction
improvementse0

Not reportedComparator

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

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

Verbatim

t0

“Cassava”

✓ located verbatim in the source · title, characters 91–98 · show in text ↑
e0

“The soil-test-based recommendation [nitrogen (N)–phosphorus (P)–potassium (K)–zinc (Zn) at 82:6.3:68:2 kg ha−1 along with farmyard manure (FYM) at 6.25 t ha−1] resulted in the greatest benefit–cost ratio of 1.75 with improvements in tuber and soil quality.”

✓ located verbatim in the source · abstract, characters 714–970 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The soil-test-based recommendation improved soil quality in cassava production.

Treatment
soil-test-based recommendatione0
Outcome
soil qualitye0
Direction
improvementse0

Not reportedComparator

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

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

Verbatim

t0

“Cassava”

✓ located verbatim in the source · title, characters 91–98 · show in text ↑
e0

“The soil-test-based recommendation [nitrogen (N)–phosphorus (P)–potassium (K)–zinc (Zn) at 82:6.3:68:2 kg ha−1 along with farmyard manure (FYM) at 6.25 t ha−1] resulted in the greatest benefit–cost ratio of 1.75 with improvements in tuber and soil quality.”

✓ located verbatim in the source · abstract, characters 714–970 · show in text ↑

zinc atom · yield · Manihot esculenta (cassava)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

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

27 papers: 24 positive, 3 negative or no effect

23 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

23 papers more in this group

See all 27 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. negative
  2. no effect
  3. no effect

149 papers more in this group

See all 153 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.