Abstract
Abstract Although onion, Allium cepa L., production has been enhanced by the addition of organic matter to soil, other reports indicated no effect. In this study, onion plots (var. Sweet Sunrise) were treated with conventional fertilizer, composted sugar mill ash and vegetative yard waste, or fertilizer + compost. Measurements during two consecutive growing seasons in the Lower Rio Grande Valley of Texas were recorded on soil nutrients, nutrients in onion leaf tissue, leaf lengths, bulb yields in terms of numbers and weights in different size classes, and biochemical qualities. Our study demonstrates that the compost enriched soil fertility, particularly P, K, and Zn; percentage N in the onion leaf tissue was increased to the same extent as plants that received fertilizer; and leaves grew as long as in plots with fertilizer. At harvest, small cull bulbs were consistently the most prevalent in the control, and although compost had a positive influence on numbers and weights of marketable bulbs, fertilizer provided the highest yields during the first growing season. During the second season, however, marketable bulbs in composted plots were as abundant as in the plots receiving fertilizer. Treatment effects on thrips-induced leaf scarring were negligible. We conclude that the compost was useful for increasing marketable onion yield, and that effects improved as the compost decomposed over the two consecutive growing seasons.
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Claims 10
Claim · model-written summary
Compost enriched soil fertility, particularly P, K and Zn, in onion plots.
- Taxon
- onion
Allium cepat0 - Treatment
- composte1
- Outcome
- soil fertilitye1
- Direction
- enrichede1
- Qualifier
- particularly P, K, and Zne1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e1“the compost enriched soil fertility, particularly P, K, and Zn; percentage N in the onion leaf tissue was increased to the same extent as plants that received fertilizer”
Claim · model-written summary
Compost raised onion leaf N to the same extent as fertilizer.
- Taxon
- onionAllium cepat0
- Organ / stage
- onion leaf tissuee1
- Treatment
- composte1
- Outcome
- percentage N in the onion leaf tissuee1
- Direction
- increasede1
- Qualifier
- to the same extente1
- Comparator
- plants that received fertilizere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e1“the compost enriched soil fertility, particularly P, K, and Zn; percentage N in the onion leaf tissue was increased to the same extent as plants that received fertilizer”
Claim · model-written summary
Onion leaves in compost plots grew as long as leaves in fertilizer plots.
- Taxon
- onionAllium cepat0
- Treatment
- composte1
- Outcome
- leaves grewe2
- Direction
- as long ase2
- Comparator
- plots with fertilizere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e1“the compost enriched soil fertility, particularly P, K, and Zn; percentage N in the onion leaf tissue was increased to the same extent as plants that received fertilizer”
e2“leaves grew as long as in plots with fertilizer”
Claim · model-written summary
Compost had a positive influence on the numbers and weights of marketable onion bulbs.
- Taxon
- onionAllium cepat0
- Treatment
- composte3
- Outcome
- numbers and weights of marketable bulbse3
- Direction
- positive influencee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e3“compost had a positive influence on numbers and weights of marketable bulbs”
Claim · model-written summary
Fertilizer gave the highest onion yields in the first growing season.
- Taxon
- onionAllium cepat0
- Treatment
- fertilizere4
- Outcome
- yieldse4
- Direction
- higheste4
- Setting
- first growing seasone4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e4“fertilizer provided the highest yields during the first growing season”
Claim · model-written summary
In the second season, marketable bulbs in composted plots were as abundant as in fertilized plots.
- Taxon
- onionAllium cepat0
- Treatment
- composted plotse5
- Outcome
- marketable bulbse5
- Direction
- as abundant ase5
- Comparator
- plots receiving fertilizere5
- Setting
- second seasone5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e5“During the second season, however, marketable bulbs in composted plots were as abundant as in the plots receiving fertilizer”
Claim · model-written summary
Small cull bulbs were most prevalent in the unamended control.
- Taxon
- onionAllium cepat0
- Outcome
- small cull bulbse6
- Qualifier
- most prevalent in the controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e6“small cull bulbs were consistently the most prevalent in the control”
Claim · model-written summary
Treatment effects on thrips-induced leaf scarring in onion were negligible.
- Taxon
- onionAllium cepat0
- Outcome
- thrips-induced leaf scarringe7
- Direction
- negligiblee7
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e7“Treatment effects on thrips-induced leaf scarring were negligible”
Claim · model-written summary
Compost was useful for increasing marketable onion yield.
- Taxon
- onionAllium cepat0
- Treatment
- composte0
- Outcome
- marketable onion yielde0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e0“We conclude that the compost was useful for increasing marketable onion yield, and that effects improved as the compost decomposed over the two consecutive growing seasons”
Claim · model-written summary
Compost effects on onion improved as the compost decomposed over two consecutive growing seasons.
- Taxon
- onionAllium cepat0
- Treatment
- the compost decomposede0
- Outcome
- effectse0
- Direction
- improvede0
- Setting
- two consecutive growing seasonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“compost on onion quality”
e0“We conclude that the compost was useful for increasing marketable onion yield, and that effects improved as the compost decomposed over the two consecutive growing seasons”
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