Paper · 1966 · New Zealand Journal of Agricultural Research

The main effects and interactions of nutrients on the growth of irrigated lucerne

P. B. Harris; K. J. McNaught; P. B. Lynch

20
claims
49
verbatim quotes
16
citations
2
research areas
✓
Open access

Abstract

Abstract The main effects and interactions of lime, mono‐calcium phosphate, sulphur, potassium chloride, sodium molybdate, copper carbonate, magnesium carbonate, and borax on irrigated lucerne cut for hay were studied on Lismore shallow stony silt loam over a period of 10 years. In most years greatest responses in total annual yields were to sulphur (S), followed by high lime (HL), potassium chloride (K), high mono‐calcium phosphate (HP), and sodium molybdate (Mo), in that order. The relative importance of K increased in later years. A significant response to copper carbonate (Cu) was found only in the first year, and to magnesium carbonate (Mg) and borax (B) only in a few cuts. In the last two years HL, S, K, and Mo increased, and HP decreased, the percentage of lucerne in the mown herbage. All treatments significantly increased levels of the applied nutrients in plant tissues. Significant main effects of treatments on other nutrient levels in the herbage, noted in more than one cut, were as follows: (a) positive: HL on nitrogen, sulphur, and molybdenum; HP on manganese and magnesium; S on nitrogen, sodium, and copper; and K on manganese; (b) negative: HL on potassium, manganese, and magnesium; HP on copper; S on phosphorus, molybdenum, and manganese; K on nitrogen, calcium, phosphorus, sodium, molybdenum, copper, and magnesium; and Mg on manganese. Highly significant positive treatment interactions were: SK on potassium levels, LMo on molybdenum; and LCu, PCu, and SCu on copper; and negative treatment interactions were LMo and SK on sodium and LS, and SMo on molybdenum levels. HL raised soil pH and soil test levels of calcium and phosphorus, but decreased potassium levels; HP increased calcium and phosphorus, but decreased potassium; S lowered pH, calcium, phosphorus, and potassium; K increased soil potassium, but decreased pH, calcium, and phosphorus; Mg raised pH and B increased soil phosphorus levels. Lime, phosphate, sulphur, potash, and molybdenum are all needed to maintain high production of irrigated lucerne on this soil when all herbage is cut and removed.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 20

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sulphur gave the greatest response in total annual yield of irrigated lucerne.

Taxon
lucerneMedicago sativat0
Treatment
sulphur (S)e1
Outcome
total annual yieldse1
Direction
greateste1

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e1

“In most years greatest responses in total annual yields were to sulphur (S), followed by high lime (HL), potassium chloride (K), high mono‐calcium phosphate (HP), and sodium molybdate (Mo), in that order”

✓ located verbatim in the source · abstract, characters 280–483 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Following sulphur, high lime, potassium chloride, high mono-calcium phosphate and sodium molybdate gave successively smaller total annual yield responses.

Taxon
lucerneMedicago sativat0
Treatment
high lime (HL), potassium chloride (K), high mono‐calcium phosphate (HP), and sodium molybdate (Mo)e1
Outcome
total annual yieldse1
Direction
followed bye1

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e1

“In most years greatest responses in total annual yields were to sulphur (S), followed by high lime (HL), potassium chloride (K), high mono‐calcium phosphate (HP), and sodium molybdate (Mo), in that order”

✓ located verbatim in the source · abstract, characters 280–483 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The relative importance of potassium chloride (K) increased in later years.

Taxon
lucerneMedicago sativat0
Treatment
Ke2
Outcome
relative importancee2
Direction
increasede2
Qualifier
in later yearse2

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e2

“The relative importance of K increased in later years”

✓ located verbatim in the source · abstract, characters 485–538 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

A significant response to copper carbonate (Cu) was found only in the first year.

Taxon
lucerneMedicago sativat0
Treatment
copper carbonate (Cu)e3
Outcome
responsee3
Qualifier
only in the first yeare3

Not reportedComparatorDirection

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e3

“A significant response to copper carbonate (Cu) was found only in the first year, and to magnesium carbonate (Mg) and borax (B) only in a few cuts”

✓ located verbatim in the source · abstract, characters 540–686 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

A significant response to magnesium carbonate (Mg) and borax (B) was found, only in a few cuts.

Taxon
lucerneMedicago sativat0
Treatment
magnesium carbonate (Mg) and borax (B)e3
Outcome
responsee3
Qualifier
only in a few cutse3

Not reportedComparatorDirection

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e3

“A significant response to copper carbonate (Cu) was found only in the first year, and to magnesium carbonate (Mg) and borax (B) only in a few cuts”

✓ located verbatim in the source · abstract, characters 540–686 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

In the last two years high lime, sulphur and potassium chloride increased the percentage of lucerne in the mown herbage.

Taxon
lucerneMedicago sativat0
Treatment
HL, S, Ke4
Outcome
percentage of lucerne in the mown herbagee4
Direction
increasede4
Qualifier
In the last two yearse4

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e4

“In the last two years HL, S, K, and Mo increased, and HP decreased, the percentage of lucerne in the mown herbage”

✓ located verbatim in the source · abstract, characters 688–801 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

In the last two years sodium molybdate (Mo) increased the percentage of lucerne in the mown herbage.

Taxon
lucerneMedicago sativat0
Treatment
Moe4
Outcome
percentage of lucerne in the mown herbagee4
Direction
increasede4
Qualifier
In the last two yearse4

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e4

“In the last two years HL, S, K, and Mo increased, and HP decreased, the percentage of lucerne in the mown herbage”

✓ located verbatim in the source · abstract, characters 688–801 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

In the last two years high mono-calcium phosphate decreased the percentage of lucerne in the mown herbage.

Taxon
lucerneMedicago sativat0
Treatment
HPe4
Outcome
percentage of lucerne in the mown herbagee4
Direction
decreasede4
Qualifier
In the last two yearse4

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e4

“In the last two years HL, S, K, and Mo increased, and HP decreased, the percentage of lucerne in the mown herbage”

✓ located verbatim in the source · abstract, characters 688–801 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

All treatments significantly increased levels of the applied nutrients in lucerne plant tissues.

Taxon
lucerneMedicago sativat0
Organ / stage
plant tissuese5
Treatment
All treatmentse5
Outcome
levels of the applied nutrientse5
Direction
increasede5

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e5

“All treatments significantly increased levels of the applied nutrients in plant tissues”

✓ located verbatim in the source · abstract, characters 803–890 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

High lime increased herbage nitrogen, sulphur and molybdenum levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
HLe7
Outcome
nitrogen, sulphur, and molybdenume7
Direction
increaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“HL on nitrogen, sulphur, and molybdenum”

✓ located verbatim in the source · abstract, characters 1031–1070 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

High lime decreased herbage potassium, manganese and magnesium levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
HLe7
Outcome
potassium, manganese, and magnesiume7
Direction
decreaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“HL on potassium, manganese, and magnesium”

✓ located verbatim in the source · abstract, characters 1172–1213 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

High mono-calcium phosphate increased herbage manganese and magnesium levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
HPe7
Outcome
manganese and magnesiume7
Direction
increaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“HP on manganese and magnesium”

✓ located verbatim in the source · abstract, characters 1072–1101 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

High mono-calcium phosphate decreased herbage copper levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
HPe7
Outcome
coppere7
Direction
decreaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“HP on copper”

✓ located verbatim in the source · abstract, characters 1215–1227 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Sulphur increased herbage nitrogen, sodium and copper levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
Se7
Outcome
nitrogen, sodium, and coppere7
Direction
increaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“S on nitrogen, sodium, and copper”

✓ located verbatim in the source · abstract, characters 1103–1136 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Sulphur decreased herbage phosphorus, molybdenum and manganese levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
Se7
Outcome
phosphorus, molybdenum, and manganesee7
Direction
decreaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“S on phosphorus, molybdenum, and manganese”

✓ located verbatim in the source · abstract, characters 1229–1271 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Potassium chloride increased herbage manganese levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
Ke7
Outcome
manganesee7
Direction
increaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“K on manganese”

✓ located verbatim in the source · abstract, characters 1142–1156 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Potassium chloride decreased herbage nitrogen, calcium, phosphorus, sodium, molybdenum, copper and magnesium levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
Ke7
Outcome
nitrogen, calcium, phosphorus, sodium, molybdenum, copper, and magnesiume7
Direction
decreaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“K on nitrogen, calcium, phosphorus, sodium, molybdenum, copper, and magnesium”

✓ located verbatim in the source · abstract, characters 1273–1350 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Magnesium carbonate decreased herbage manganese levels.

Taxon
lucerneMedicago sativat0
Organ / stage
herbagee6
Treatment
Mge7
Outcome
manganesee7
Direction
decreaseinferrede7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e6

“Significant main effects of treatments on other nutrient levels in the herbage”

✓ located verbatim in the source · abstract, characters 892–970 · show in text ↑
e7

“Mg on manganese”

✓ located verbatim in the source · abstract, characters 1356–1371 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Positive treatment interactions raised potassium, molybdenum and copper levels (SK, LMo, LCu, PCu and SCu).

Taxon
lucerneMedicago sativat0
Treatment
SKe7
Outcome
potassium levelse7
Direction
increaseinferrede7
Qualifier
SK on potassium levels, LMo on molybdenum; and LCu, PCu, and SCu on coppere7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e7

“Highly significant positive treatment interactions were: SK on potassium levels, LMo on molybdenum; and LCu, PCu, and SCu on copper”

✓ located verbatim in the source · abstract, characters 1373–1504 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Negative treatment interactions lowered sodium and molybdenum levels (LMo and SK on sodium; LS and SMo on molybdenum).

Taxon
lucerneMedicago sativat0
Treatment
LMo and SKe7
Outcome
sodiume7
Direction
decreaseinferrede7
Qualifier
LS, and SMo on molybdenum levelse7

Not reportedComparator

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

t0

“growth of irrigated lucerne”

✓ located verbatim in the source · title, characters 54–81 · show in text ↑
e7

“negative treatment interactions were LMo and SK on sodium and LS, and SMo on molybdenum levels”

✓ located verbatim in the source · abstract, characters 1510–1604 · show in text ↑

sodium molybdate (anhydrous) · yield · Medicago sativa (alfalfa)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. no effect
See all 2 papers →

potassium chloride · yield · Medicago sativa (alfalfa)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

calcium bis(dihydrogenphosphate) · yield · Medicago sativa (alfalfa)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 →

lime · yield · Medicago sativa (alfalfa)Results differ

50 papers: 41 positive, 9 negative or no effect

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

  1. no effect
  2. no effect
  3. no effect

46 papers more in this group

See all 50 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.