Abstract
Aim of study: To evaluate the use of compost and natural rocks as partial replacement of mineral fertilizers in ‘Flame’ seedless grape vineyards.Area of study: The present work was conducted during three successive seasons (2016, 2017 and 2018), being the first season a preliminary trial on 4-yr old grapes cultivated in two different soil types (sandy and clay) at two different locations, Egypt (Abo Galeb, Giza governorate; EL-Mahala, Gharbia governorate).Material and methods: Treatments were applied as natural raw materials at 20, 40, 60, 80 and 100% out of recommended mineral NPK rate. The mineral fertilizers used were ammonium sulfate (21.6% N), calcium super phosphate (15.5% P2O5) and potassium sulfate (48% K2O). The natural rocks used were phosphate rock (22.0% P2O5) and Feldspar (10.12% K2O). Yield and fruit characteristics and leaf mineral content were determined.Main results: Using compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPK enhanced leaf nutrients content and gave the highest yield and cluster weight. This mix also improved berries physical and chemical characteristics. There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice. The most pronounced effect was related to using 60% mineral fertilization + 40% organic and natural rocks in both vineyard locations.Research highlights: We can reduce the recommended doses of mineral NPK by about 40%, reducing then the soil pollution.
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Claims 10
Claim · model-written summary
The compost, natural rock, bacterial and mineral NPK mix enhanced leaf nutrient content.
- Treatment
- compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPKe0
- Outcome
- leaf nutrients contente0
- Direction
- enhancede0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPK enhanced leaf nutrients content and gave the highest yield and cluster weight.”
t0“grapevine”
Claim · model-written summary
The mixed fertilization produced the highest grape yield.
- Treatment
- compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPKe0
- Outcome
- yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPK enhanced leaf nutrients content and gave the highest yield and cluster weight.”
t0“grapevine”
Claim · model-written summary
The mixed fertilization produced the highest cluster weight.
- Treatment
- compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPKe0
- Outcome
- cluster weighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Using compost in combination with natural rocks enriched with NPK mobilization bacteria and mineral NPK enhanced leaf nutrients content and gave the highest yield and cluster weight.”
t0“grapevine”
Claim · model-written summary
The mix improved physical and chemical berry characteristics.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This mix also improved berries physical and chemical characteristics.”
t0“grapevine”
Claim · model-written summary
Soluble solids content increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice.”
t0“grapevine”
Claim · model-written summary
The soluble-solids-to-acid ratio increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice.”
t0“grapevine”
Claim · model-written summary
Anthocyanin content increased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice.”
t0“grapevine”
Claim · model-written summary
Berry juice nitrate content decreased.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase in soluble solids content (SSC), SSC/acid ratio, and anthocyanin content, associated with a reduction in nitrate content of the berry juice.”
t0“grapevine”
Claim · model-written summary
The most pronounced effects occurred with 60% mineral and 40% organic and natural-rock fertilization at both sites.
- Treatment
- 60% mineral fertilization + 40% organic and natural rockse0
- Outcome
- most pronounced effecte0
- Direction
- most pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most pronounced effect was related to using 60% mineral fertilization + 40% organic and natural rocks in both vineyard locations.”
t0“grapevine”
Claim · model-written summary
The authors recommend reducing mineral NPK doses by about 40%.
- Outcome
- reduce the recommended doses of mineral NPK by about 40%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We can reduce the recommended doses of mineral NPK by about 40%, reducing then the soil pollution.”
t0“grapevine”
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