Abstract
Vegetable production system has presented and developed strategies to increase the level of sustainability of production, adding information that expands agroecological production, resulting in better use of different components necessary for production. This study aims to evaluate the effect of different coverages in relation to the expression of the genotype in three crops of different agricultural years, enabling the best use of natural resources, bringing effective subsidies for a more sustainable production. The study was conducted in three growing seasons, in 2017, 2018 and 2019 crop years, in a randomized block design with four replications, using three soil covers (corn silage residue, elephant grass straw and soil without vegetation cover) and a lettuce cultivar (Lettuce “Iceberg”). It was possible to observe through the analysis of variance that only the year variable promoted alterations on the analyzed characters, with no effect of the different coverages. The highest production occurred in 2019 for all variables analyzed. Regarding the estimate of Pearson's linear correlation, it was possible to obtain significance at 0.01% of probability for the variables average total weight and productivity, with a significance of 1% of probability for the variables average diameter, average longitudinal diameter and productivity. There was no effect of soil cover for the variables of lettuce production and productivity, possibly related to excess water from precipitation in 2017, 2018 and 2019. In addition, the complementary effect of irrigation in the years of the experiment was, possibly, superior to the demand of the crop by reducing the effect of ground cover on soil water dynamics.
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Claims 8
Claim · model-written summary
Crop year altered the analyzed lettuce characters.
- Taxon
- lettuce
Lactuca sativat0 - Outcome
- analyzed characterse0
- Setting
- yeare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the year variable promoted alterations on the analyzed characters”
t0“lettuce genotype”
Claim · model-written summary
Soil cover had no effect on lettuce production and productivity.
- Taxon
- lettuceLactuca sativae0
- Treatment
- soil covere0
- Outcome
- lettuce production and productivitye0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect of soil cover for the variables of lettuce production and productivity”
Claim · model-written summary
Lettuce production was highest in 2019 across analyzed variables.
- Taxon
- lettuceLactuca sativat0
- Outcome
- productione0
- Direction
- higheste0
- Setting
- 2019e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest production occurred in 2019 for all variables analyzed.”
t0“lettuce genotype”
Claim · model-written summary
Average total weight correlated significantly with productivity.
- Taxon
- lettuceLactuca sativat0
- Outcome
- productivitye0
- Value
- 0.01%e0
- Comparator
- average total weighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was possible to obtain significance at 0.01% of probability for the variables average total weight and productivity”
t0“lettuce genotype”
Claim · model-written summary
Average diameter correlated significantly with productivity.
- Taxon
- lettuceLactuca sativat0
- Outcome
- productivitye0
- Value
- 1%e0
- Comparator
- average diametere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a significance of 1% of probability for the variables average diameter, average longitudinal diameter and productivity.”
t0“lettuce genotype”
Claim · model-written summary
Average longitudinal diameter correlated significantly with productivity.
- Taxon
- lettuceLactuca sativat0
- Outcome
- productivitye0
- Value
- 1%e0
- Comparator
- average longitudinal diametere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a significance of 1% of probability for the variables average diameter, average longitudinal diameter and productivity.”
t0“lettuce genotype”
Claim · model-written summary
Excess rainfall may have obscured soil cover effects.
- Taxon
- lettuceLactuca sativat0
- Outcome
- no effect of soil covere1
- Qualifier
- excess water from precipitation in 2017, 2018 and 2019e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“possibly related to excess water from precipitation in 2017, 2018 and 2019.”
t0“lettuce genotype”
e1“There was no effect of soil cover”
Claim · model-written summary
Irrigation may have exceeded crop demand and reduced ground cover effects on soil water dynamics.
- Taxon
- lettuceLactuca sativat0
- Treatment
- irrigatione0
- Outcome
- effect of ground cover on soil water dynamicse0
- Qualifier
- possibly, superior to the demand of the crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the complementary effect of irrigation in the years of the experiment was, possibly, superior to the demand of the crop by reducing the effect of ground cover on soil water dynamics.”
t0“lettuce genotype”