| Abstract Detail
Production and Management Halseth, Donald E. [1], Sandsted, Eric R. [2]. Management profile for Marcy, a high yielding chipping variety. THE chipping variety Marcy (NY112) has a very high yield potential and growers wish to take advantage of this important agronomic trait. Marcy has averaged 409 cwt/acre (45.8 t/ha) marketable yield in 31 trials in New York State, representing 122% of Atlantic and 109% of Snowden. Specific gravity averaged 1.080 (8 units below Atlantic), low tuber set at 6.25 per plant (7.5 for Snowden) and has a high average tuber weight of 6.2 oz (173 g) compared to 4.9 oz (139 g) for Snowden. However, there are concerns with late maturity, tuber size, glycoalkaloids and sugar levels that must be managed. Under New York State environments, maturity and tuber size are best moderated with moderate nitrogen applications 130-150 lbs/acre (145-167 Kg/ha) and a seed spacing of 7 to 8 in (18 to 22 cm). If tubers are harvested immature and handled roughly total glycoalkaloids (TGA) can become elevated (40 to 50 mg/g f.w.) while in the same experiment Snowden ranged from 50 to 80. When Marcy tubers were allowed to mature before harvest and handled carefully, TGA ranged from 12 to 20 (Snowden ranged from 10 to 24). Sugar levels climb in 40F (4.4C) and 45F (7.2C) storages to relatively high levels in Dec-Feb storage but fall dramatically in March-April. Agtron chip scores from 40F and 45F storage averaged 56.5 and 60.7 respectively for Marcy, compared for 59.0 and 60.7 for Snowden, indicating that this variety is better suited for longer term storage and chipping from 45F or above.
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1 - Cornell University, Horticulture, 15D Plant Science Building, Ithaca, NY, 14853, USA
2 - Cornell University, Horticulture, 15C Plant Science Building, Ithaca, NY, 14853, USA
Keywords:
chipping varieties
Best Management Practices.
Session: PAA13-1
Location: Hall of Ideas Room E/Monona Terrace
Date: Tuesday, July 25th, 2006
Time: 1:30 PM
Abstract ID:277 |
