38 



Marketable yields of bulb onion were significantly greater during 

 the first year of the cropping cycle than in the second year (Table ^1-) . 

 Within a cropping year, onion planted early in the season produced higher 

 yields xhan late-planted onion. A difference of 4 weeks in planting 

 bulb onion during 1977-78 resulted in a 20-metric ton yield difference. 

 Larger onion plants were produced in early plantings which tolerated 

 low temperatures in January and February. Guzman and Hayslip (5^) aJ^d 

 Gorgan and Izq_uierdo (32) observed that yield of bulb onions decreased 

 as planting was delayed during the period from September to December. 

 Halsey (61) reported that bulb size decreased after October planting 

 dates in Gainesville, 



Marketable yields of pole bean were lower compared to normal 

 planting in North Florida (Table ^■) . Bryan (20) obtained yields of 

 4.5 metric tons/ha from an early spring planting. In Dade county, aversige 

 yields ranged from 3-o to 7.8 metric tons/ha (19). High rainfall and 

 temperature at flowering and pod set resulted in low yields. Pole bean, 

 therefore, represents a risk when planted during late spring. 



A total of 15.3 metric tons/ha of marketable collards was picked 

 from four successive harvests of mature leaves (Table ^■) ■ which were simi- 

 lar with yields reported by Halsey and Kostewicz (67) • Yields during 

 the second year were significantly lower (6.1 metric tons/ha) because 

 planting coincided with higher temperature and rainfall during late 

 summer . 



Marketable yields cf English pea were lower in 1 977-78 than in 

 1978-79 because prolonged low temperatures severely retarded early 

 growt-h which predisposed some plants to killing frost in January and 

 February. Halsey and Kostewicz (64) reported low production throughout 



