Articles
Productivity of a trial of thirteen asparagus genotypes in their eighth year within the IV International Asparagus Cultivar Trial (ISHS)
Article number
1376_13
Pages
81 – 88
Language
English
Abstract
Asparagus comprises an interesting alternative for the diversification of perennial production in the case of countries, like Argentina, that are highly focussed upon extensive crops.
The objective of the current study was to evaluate the behaviour of 13 genotypes of all male cultivars in Argentina.
The experiment was originally planted in 2011 in a random complete block design with four repetitions, with a density of 23,810 plants ha‑1. Twenty-seven harvests were carried out between September 18, 2019-November 12, 2019, in which prime quality commercial productivity was evaluated through the following traits: total fresh productivity (TFP) and commercial fresh productivity (CFP), in t ha‑1, obtained via two cutting lengths of 17 and 22 cm (CFP-S and CFP-L); total number of spears (TNS) and number of commercial spears (NCS) from two cutting regimes (NCS-S and NCS-L); spear diameter distribution (Jumbo (J), Extra-Large (XL), Large (L), Medium (M), Small (S) and Asparagina (A)); and waste, comprised of open headed or overly short spears and spears with other defects.
Analysis of variance was applied to the results (ANOVA-LSD test, P≥0.05). The male green asparagus genotypes of Italian origin, Franco, Giove, Ítalo, Eros and Vittorio, and two genotypes of North American origin, NJ 1123 (green) and NJ-1192 (purple tetraploid), showed superiority for productivity compared to the remaining genotypes.
For spear number, the genotype NJ-1123 was the highest performer for total spear number, followed by Giove, Ercole, Eros and Early California; while NJ-1123 gave more discarded spears than the other genotypes mentioned, it remained a high performer for commercial spear number.
For spear diameter, the genotypes that produced a higher proportion of high calibers were Eros and Giove, while those with the most smaller calibers were Early-California and UC-157. Differences in genotype ranking for productivity and spear number between the eighth productive year reported here and earlier years of the plantation imply that some genotypes require several years of growth before their adaptation to the region becomes manifest.
The objective of the current study was to evaluate the behaviour of 13 genotypes of all male cultivars in Argentina.
The experiment was originally planted in 2011 in a random complete block design with four repetitions, with a density of 23,810 plants ha‑1. Twenty-seven harvests were carried out between September 18, 2019-November 12, 2019, in which prime quality commercial productivity was evaluated through the following traits: total fresh productivity (TFP) and commercial fresh productivity (CFP), in t ha‑1, obtained via two cutting lengths of 17 and 22 cm (CFP-S and CFP-L); total number of spears (TNS) and number of commercial spears (NCS) from two cutting regimes (NCS-S and NCS-L); spear diameter distribution (Jumbo (J), Extra-Large (XL), Large (L), Medium (M), Small (S) and Asparagina (A)); and waste, comprised of open headed or overly short spears and spears with other defects.
Analysis of variance was applied to the results (ANOVA-LSD test, P≥0.05). The male green asparagus genotypes of Italian origin, Franco, Giove, Ítalo, Eros and Vittorio, and two genotypes of North American origin, NJ 1123 (green) and NJ-1192 (purple tetraploid), showed superiority for productivity compared to the remaining genotypes.
For spear number, the genotype NJ-1123 was the highest performer for total spear number, followed by Giove, Ercole, Eros and Early California; while NJ-1123 gave more discarded spears than the other genotypes mentioned, it remained a high performer for commercial spear number.
For spear diameter, the genotypes that produced a higher proportion of high calibers were Eros and Giove, while those with the most smaller calibers were Early-California and UC-157. Differences in genotype ranking for productivity and spear number between the eighth productive year reported here and earlier years of the plantation imply that some genotypes require several years of growth before their adaptation to the region becomes manifest.
Publication
Authors
A.M. Castagnino, K.E. Diaz, M.B. Rosini, S. Benson, E. Bastien, A. García-Franco, W.J. Rogers
Keywords
cultivars, spears, quality, productivity, spear diameter
Groups involved
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