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PKP Metadata Items |
Metadata for this Document |
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| 1. |
Title |
Title of document |
Relations between zero-inflated variables in trials with horticultural crops |
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| 2. |
Creator |
Author's name, affiliation, country |
Alessandro D. Lúcio; Federal University of Santa Maria, Rural Science Center, Crop Science Department. Santa Maria, Rio Grande do Sul; Brazil |
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| 2. |
Creator |
Author's name, affiliation, country |
Luis F. Nunes; Polytechnic Institute of Bragança, School of Agriculture, Mountain Research Centre (CIMO). Bragança; Portugal |
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| 2. |
Creator |
Author's name, affiliation, country |
Francisco Rego; University of Lisbon, Agronomy Institute, CEABN. Lisbon; Portugal |
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| 2. |
Creator |
Author's name, affiliation, country |
Maurício P. B. Pasini; University of Cruz Alta, Cruz Alta, Rio Grande do Sul; Brazil |
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| 3. |
Subject |
Discipline(s) |
agriculture; plant production |
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| 3. |
Subject |
Keyword(s) |
multiple harvests; data overdispersion; experimental planning |
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| 4. |
Description |
Abstract |
Certain characteristics of some vegetable crops allow multiple harvests during the production cycle; however, to our knowledge, no study has described the behavior of fruit production with progression of the production cycle in vegetable crops with multiple harvests that present data overdispersion. We aimed to characterize the data overdispersion of zero-inflated variables and identify the behavior of these variables during the production cycle of several vegetable crops with multiple harvests. Data from 11 uniformity trials were used without applying treatments; these comprise the database from the Experimental Plants Group at the Federal University of Santa Maria, Brazil. The trials were conducted using four horticultural species grown during different cultivation seasons, cultivation environments, and experimental structures. Although at each harvest, a larger number of basic units with harvest fruit was observed than units without harvest fruit, the basic unit percentage without fruit was high, generating an overdispersion within each individual harvest. The variability within each harvest was high and increased with the evolution of the production cycle of Capsicum annuum, Solanum lycopersicum var. cerasiforme, Phaseolus vulgaris, and Cucurbita pepo species. However, the correlation coefficient between the mean weight and number of harvest fruits tended to remain constant during the crop production cycle. These behaviors show that harvest management should be done individually, at each harvest, such that data overdispersion is reduced.
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| 5. |
Publisher |
Organizing agency, location |
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA) |
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| 6. |
Contributor |
Sponsor(s) |
Brazilian Ministry of Education’s Graduate Education Support Agency (CAPES) awarded an overseas post doctorate scholarship (Process BEX 1457/14-4) |
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| 7. |
Date |
(YYYY-MM-DD) |
2016-06-01
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| 8. |
Type |
Status & genre |
Peer-reviewed Article |
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| 8. |
Type |
Type |
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| 9. |
Format |
File format |
PDF, HTML, XML |
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| 10. |
Identifier |
Uniform Resource Identifier |
https://revistas.inia.es:443/index.php/sjar/article/view/8175 |
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| 10. |
Identifier |
Digital Object Identifier (DOI) |
http://dx.doi.org/10.5424/sjar/2016142-8175 |
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| 11. |
Source |
Title; vol., no. (year) |
Spanish Journal of Agricultural Research; Vol 14, No 2 (2016) |
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| 12. |
Language |
English=en |
en |
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| 13. |
Relation |
Supp. Files |
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| 14. |
Coverage |
Geo-spatial location, chronological period, research sample (gender, age, etc.) |
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| 15. |
Rights |
Copyright and permissions |
Copyright (c) 2016 Spanish Journal of Agricultural Research
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