Abstract
Applying livestock manure to soil can enhance soil fertility and crop growth; however, little information is available on the residual effects of manure on crop growth. The objective of this study was to investigate the residual effect of fresh or composted hoop house swine manure on the growth and yield of soybean [ Glycine max (L.) Merr.]. During 2000 and 2001 near Boone, IA, research plots received applications of composted or fresh solid swine manure from hoop structures or one of four levels of urea (0, 60, 120, and 180 kg N ha −1 ) before planting maize ( Zea mays L.). During the growing season following maize harvest, we evaluated the responses of soybean to the eight treatments applied the previous year. During both years, soybean plants from manure‐amended plots were significantly taller and had a thicker stem diameter than plants from the other plots. The manure‐treated plots produced 39% greater soybean leaf area than the control in 2001 and 11% greater leaf area than the urea‐amended plots in 2002. There was a 21 to 34% greater K concentration in soybean plants grown in the manure‐amended sites than in the other plots. Soybean grain yield was 0.2 to 0.5 Mg ha −1 greater in the manure‐treated plots than the control or urea‐fertilized plots. Responses to manure were unaffected by the time of application (fall or spring) or the form of manure (composted or fresh). We have shown that fresh and composted swine manure application before growing maize resulted in detectable, positive residual effects on soybean growth and yield.
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 5
Claim · model-written summary
Manure-amended soybean was taller and had thicker stems than other plots.
- Taxon
- soybean
Glycine maxe0 - Treatment
- manure‐amended plotse0
- Outcome
- taller and had a thicker stem diametere0
- Direction
- tallere0
- Comparator
- the other plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean plants from manure‐amended plots were significantly taller and had a thicker stem diameter than plants from the other plots”
Claim · model-written summary
Manure increased soybean leaf area by 39% over control in 2001.
- Taxon
- soybeanGlycine maxe0
- Treatment
- manure‐treated plotse0
- Outcome
- soybean leaf areae0
- Direction
- greatere0
- Value
- 39%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The manure‐treated plots produced 39% greater soybean leaf area than the control in 2001”
Claim · model-written summary
Manure increased leaf area by 11% over urea plots in 2002.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- manure‐treated plotse1
- Outcome
- leaf areae0
- Direction
- greatere0
- Value
- 11%e0
- Comparator
- the urea‐amended plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“11% greater leaf area than the urea‐amended plots in 2002”
e1“The manure‐treated plots produced 39% greater soybean leaf area”
t0“Soybean [Glycine max (L.) Merr.]”
Claim · model-written summary
Soybean K concentration was 21 to 34% greater at manure sites.
- Taxon
- soybeanGlycine maxe0
- Treatment
- manure‐amended sitese0
- Outcome
- K concentratione0
- Direction
- greatere0
- Value
- 21 to 34%e0
- Comparator
- the other plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“21 to 34% greater K concentration in soybean plants grown in the manure‐amended sites than in the other plots”
Claim · model-written summary
Manure increased soybean grain yield by 0.2 to 0.5 Mg ha −1.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- manure‐treated plotse0
- Outcome
- grain yielde0
- Direction
- greatere0
- Value
- 0.2 to 0.5 Mg ha −1e0
- Comparator
- the control or urea‐fertilized plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean grain yield was 0.2 to 0.5 Mg ha −1 greater in the manure‐treated plots than the control or urea‐fertilized plots”
The same questions in other papers
climate site · nutrient: content · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
fertilization · nutrient: content · Glycine max (soybean)Positive and negative results
264 papers in the same direction as this paper · 44 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- no effect
306 papers more in this group
See all 310 papers →fertilization · growth · Glycine max (soybean)Positive and negative results
358 papers in the same direction as this paper · 56 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
414 papers more in this group
See all 418 papers →fertilization · yield · Glycine max (soybean)Positive and negative results
1,020 papers in the same direction as this paper · 155 in the opposite direction · 16 reporting no difference from an alternative
- negative
- positive
- positive
1,188 papers more in this group
See all 1,192 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.