Abstract
Brewer’s spent grain represents approximately 85% of the by-products generated by the beer industry. It is acidic and rich in organic matter and nutrients. In Egypt, spent grain has no value and is available at no cost all year. Incubation and germination experiments were conducted to assess the potential of using spent grain and compost to increase soil fertility and squash (Cucurbita pepo L.) growth in a calcareous soil. Amendments were two rates of spent grain (13.5, 26.7 g kg−1), two rates of compost (24.7, 49.4 g kg−1), a blend of lowest rates of compost and spent grain and a control. Treatments were mixed with calcareous soil, placed in pots and incubated anaerobically under field conditions for one month. After incubation 15 squash seeds were planted in the soil pots. Highest rate of spent grain most effectively increased soil water holding capacity, organic matter, macronutrients, micronutrients, germination parameters, and reduced soil pH. Mixing compost with spent grain was more effective than high rate of compost in increasing water holding capacity, soil nutrients, and decreasing soil pH. While both treatments were equally effective in enhancing squash germination and increasing soil organic matter. Spent grain is more effective than compost in improving properties of calcareous soils, and is much less expensive. Keywords: Brewer’s spent grain, Calcareous soil, Compost, Cucurbita pepo L., Germination, Aridisols
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Claims 8
Claim · model-written summary
The highest spent-grain rate most effectively increased squash germination parameters.
- Taxon
- squasht0
- Treatment
- Highest rate of spent graine0
- Outcome
- germination parameterse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Highest rate of spent grain most effectively increased soil water holding capacity, organic matter, macronutrients, micronutrients, germination parameters, and reduced soil pH”
t0“squash”
Claim · model-written summary
The highest spent-grain rate increased soil water holding capacity and organic matter.
- Taxon
- squasht0
- Treatment
- Highest rate of spent graine0
- Outcome
- soil water holding capacity, organic mattere0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Highest rate of spent grain most effectively increased soil water holding capacity, organic matter, macronutrients, micronutrients, germination parameters, and reduced soil pH”
t0“squash”
Claim · model-written summary
The highest spent-grain rate increased soil macro- and micronutrients.
- Taxon
- squasht0
- Treatment
- Highest rate of spent graine0
- Outcome
- macronutrients, micronutrientse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Highest rate of spent grain most effectively increased soil water holding capacity, organic matter, macronutrients, micronutrients, germination parameters, and reduced soil pH”
t0“squash”
Claim · model-written summary
The highest spent-grain rate reduced soil pH.
Not reportedComparator
Verbatim
e0“Highest rate of spent grain most effectively increased soil water holding capacity, organic matter, macronutrients, micronutrients, germination parameters, and reduced soil pH”
t0“squash”
Claim · model-written summary
A compost and spent-grain mixture raised soil water holding capacity and nutrients more than high-rate compost.
Verbatim
e0“Mixing compost with spent grain was more effective than high rate of compost in increasing water holding capacity, soil nutrients”
t0“squash”
Claim · model-written summary
A compost and spent-grain mixture lowered soil pH more than high-rate compost.
Verbatim
e0“Mixing compost with spent grain was more effective than high rate of compost in increasing water holding capacity, soil nutrients, and decreasing soil pH”
t0“squash”
Claim · model-written summary
The mixture and high-rate compost were equally effective in enhancing squash germination.
Not reportedComparator
Verbatim
e0“both treatments were equally effective in enhancing squash germination”
Claim · model-written summary
The mixture and high-rate compost equally increased soil organic matter.
Not reportedComparator
Verbatim
e0“both treatments were equally effective in enhancing squash germination and increasing soil organic matter”
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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.