Early greenhouse production of male genotypes of green asparagus (Asparagus officinalis var. altilis) in their seventh year since planting in Buenos Aires, Argentina
Asparagus is an interesting productive option with growing global demand and an opportunity for seasonal early production, as well as the elaboration of greenhouse produce. In order to evaluate the behavior in their seventh production year of the Italian cultivars Italo, Zeno, Eros, Ercole, H-668, Marte and Giove versus the North American UC-157 as control, a trial was initiated on 15/11/2006 by means of seedlings transplanted at 1×0.3 m. For the current study, 35 harvests were performed between 21/08/2013 and 16/10/2013. The following traits were evaluated: total and commercial fresh productivity (TFP and CFP), total and commercial spear number (TSN and CSN) and calibre distribution (CD) (Jumbo (J), Extra-Large (XL), Large (L), Medium (M), Small (S) and Asparagin (A)). Analysis of variance (ANOVA) was carried out, with means compared by LSD (P≤0.05). For TFP (t ha‑1), the ranking was Italo: 24.8a; Zeno: 15.9 and Giove: 12.4b; UC-157: 7.4, Ercole: 7.0 and Eros: 6.8c; H-668: 5.1cd; and Marte: 3.1d; and for CFP (t ha‑1), the ranking was: Italo: 13.4a; Zeno: 7.2 and Giove: 6.4b; UC-157: 4.0, Ercole: 3.1 and Eros: 3.3cd; and H-668: 1.9 and Marte: 1.7d. For TSN (number ha‑1), the results were: Italo: 1155000a; Zeno: 557515b; Giove: 542500bc; H-668: 457485 and Eros: 447510bcd; Ercole: 402500cd; and UC-157: 347515 and Marte: 194985e; and for CSN (number ha‑1), the following was obtained: Italo: 822500a; Giove: 367500 and Zeno: 325010b, UC-157: 227500c; Eros: 207515 and H-668: 172515cd; and Marte: 120015d. For CD, Italoa stood out for J, L, M and S; whereas in XL and A there was homogeneous calibre production. It can be concluded that Italo was the best productive option available among the cultivars studied for the productive stage evaluated.
Castagnino, A.M., Tobío, M., Ruarte, V., Díaz, K.E., Benson, S., Rosini, M.B., Tarantino, M.B. and Rogers, W.J. (2021). Early greenhouse production of male genotypes of green asparagus (Asparagus officinalis var. altilis) in their seventh year since planting in Buenos Aires, Argentina. Acta Hortic. 1326, 131-136
asparagus, cultivars, spears, calibres, quality, productivity