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Commercial Productivity in the Fourth International Asparagus Cultivar Trial at Azul, Argentina (2016)

Castagnino, A. M., Diaz, K. E., Rogers, W. J., Tarantino, M. B., Marina, J., Guisolis, A.
Acta horticulturae 2018 no.1223 pp. 45-50
Asparagus (Asparagaceae), cultivars, field experimentation, growers, hybrids, Argentina
A field trial was carried out at Azul (36°48',lat.S-59°51',long.O) consisting of asparagus hybrids ‘Italo’, ‘Vittorio’, ‘Eros’, ‘Ercole’, ‘Giove’, ‘Franco’, ‘Chino’, ‘Early-California’, ‘UC-157’, ‘Patrón’, ‘NJ-1189’, ‘NJ-1123’ and ‘NJ-1192’, planted on 16/11/2011 with density 23.810 plants.ha(-1). Characters scored between 19/8/2016-17/11/2016 were: total fresh commercial productivity (TFCP), long and short spear fresh commercial productivity (LSFCP-SSFCP), total commercial spear number (TCSN), long and short commercial spear number (LCSN-SCSN), mean spear weight (MSW) and calibre distribution, CD (J: Jumbo; XL: Extra-Large; L: Large; M: Medium; S: Small y A: Asparagina). Spears were cut, selected (long: 22cm, short: 17cm), weighed, counted, washed and calibrated, and ANOVA-LSD (P≤0.05) employed. Overall mean values were: TFCP:5117,10 t ha-1, TCSN:284910 spears and MSW:18 g spear-1. For TFCP, ‘Vittorio’:6072, ‘UC-157’:6006, ‘Eros’:5885, ‘Franco’:5745, ‘NJ-1123’:5573, ‘Early-California’:5359 and ‘NJ-1192’:5284 kg ha(-1) exceeded the mean. For LSFCP, ‘UC-157’:4250(a), ‘Vittorio’:4134(ab), ‘Franco’:4056(ab), ‘Eros’:3978(ab), ‘NJ-1192’:3861(abc) and ‘Early-California’:3744(abc) excelled and for SSFCP, ‘NJ-1123’:1985(a), ‘Vittorio’:1983(ab), ‘Eros’:1907(abc), ‘Italo’:18174(abcd), ‘UC-157’:1755(abcde), ‘Franco’:1688(abcde) and ‘Early-California’:1615(abcde). For TCSN, ‘UC-157’:356343, ‘Patrón’:341991, ‘NJ-1192’:324675, ‘NJ-1123’:308022, ‘Franco’:307671, ‘Early-California’:307359, ‘Vittorio’:306306, ‘Ercole’:300027 and ‘Eros’:289497 exceeded the mean. For LCSN, ‘UC-157’:230334(a), ‘Patrón’:219336(ab), ‘NJ-1192’:216996(ab) and ‘Franco’:200343(abc) excelled and for SCSN, ‘NJ-1123’:129012(a), ‘UC-157’:126009(a), ‘Patrón’:122655(a), ‘Early-California’:111345(ab), ‘Eros’:110175(ab), ‘Ercole’:110019(ab), ‘Vittorio’:109317(ab), ‘Italo’:108342(ab), ‘NJ-1192’:107679(ab) and ‘Franco’:107328(ab). For CD, 48% were larger calibres and 43% smaller; the following performed well for J: ‘NJ-1189’(a), ‘Eros’(ab), ‘Giove’(abc), for XL: ‘Eros’(a), for L: ‘Franco’(a), ‘Eros’(a), ‘Ercole’(a), ‘Vittorio’(ab), ‘UC-157’(ab), ‘Early-California’(abc), ‘NJ-1123’ (abc), for M: ‘Ercole’(a), ‘UC-157’(a), ‘Patrón’(ab), ‘NJ-1123’ (abc), ‘Franco’(abc) and for S: ‘Patrón’(a). From these results, it can be discerned that (i) a group of five hybrids (‘Vittorio’, ‘Eros’, and ‘Franco’ =Italian), and ‘UC-157’ and ‘Early-California’ =USA) were high performing for all three productivity measures (TFCP-LSFCP-SSFCP); (ii) an additional hybrid, ‘Patrón’, gave high spear number for all three measures (TCSN-LCSN-SCSN); (iii) the hybrids varied considerably in their calibre distribution; and (iv) the hybrids provided a range of different production options for existing and potential growers.