Abstract
Poultry litter (PL) application to fields used to produce leguminous crops has merit as a sound nutrient management practice. Our research objective was to determine whether soybean [ Glycine max (L.) Merr.] fertilized with PL produced similar leaf tissue and seed nutrient concentrations and grain yield as soybean fertilized with equivalent P and K rates supplied by commercial fertilizer (CF). Twelve trials were established between 2005 and 2010. Poultry litter treatments supplied 29 to 39 (low) and 58 to 78 (high) kg P ha –1 . The low rate corresponded to 1890 to 2894 kg litter ha –1 and supplied 49 to 77 kg K and 76 to 106 kg total N ha –1 . The CF treatments provided equivalent amounts of total P and K as the PL. Eight of the 12 trials included N fertilizer alone and N, P, and K fertilizers as treatments. Eight site‐years showed yield increases for P and K applied as CF or PL, resulting in soybean yields that were 181 to 617 kg ha –1 greater, a 4.5 to 14.4% increase, than soybean receiving no P and K. Fertilization, regardless of nutrient source, had the greatest influence on trifoliolate leaf P and K concentrations at site‐years where seed yields were increased by CF or PL. In general, leaf P and K concentrations were similar between CF and PL applied at equal rates. Poultry litter is a legitimate P and K alternative to CF for soybean grown on soils that require P and K to maximize 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 3
Claim · model-written summary
P and K from commercial fertilizer or poultry litter raised soybean yields by 181 to 617 kg ha –1 at eight site years.
- Taxon
- soybean
Glycine maxe0 - Treatment
- P and K applied as CF or PLe0
- Outcome
- soybean yieldse0
- Direction
- greatere0
- Value
- 181 to 617 kg ha –1e0
- Qualifier
- 4.5 to 14.4% increasee0
- Comparator
- soybean receiving no P and Ke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eight site‐years showed yield increases for P and K applied as CF or PL, resulting in soybean yields that were 181 to 617 kg ha –1 greater, a 4.5 to 14.4% increase, than soybean receiving no P and K”
t0“Soybean”
Claim · model-written summary
Fertilization most affected soybean leaf P and K where yields responded to fertilizer.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- trifoliolate leafe0
- Outcome
- P and K concentrationse0
- Direction
- greatest influencee0
- Qualifier
- site‐years where seed yields were increased by CF or PLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization, regardless of nutrient source, had the greatest influence on trifoliolate leaf P and K concentrations at site‐years where seed yields were increased by CF or PL”
t0“Soybean”
Claim · model-written summary
Soybean leaf P and K concentrations were generally similar for equal rates of commercial fertilizer and poultry litter.
- Taxon
- soybeanGlycine maxt0
- Treatment
- PLe0
- Outcome
- leaf P and K concentrationse0
- Direction
- similare0
- Qualifier
- equal ratese0
- Comparator
- CFe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf P and K concentrations were similar between CF and PL applied at equal rates”
t0“Soybean”
The same questions in other papers
potassium · yield · Glycine max (soybean)Results differ
122 papers in the same direction as this paper · 25 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- positive
145 papers more in this group
See all 149 papers →phosphorus · yield · Glycine max (soybean)Positive and negative results
302 papers in the same direction as this paper · 42 in the opposite direction · 10 reporting no difference from an alternative
- positive
- positive
- negative
351 papers more in this group
See all 355 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
- negative
- 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.