Effect of within-row plant spacing on sweetcorn grown on muck soil, belle glade, florida, spring and fall 2001

Kenneth D. Shuler

Abstract


It is not unusual for growers to produce large ears of sweetcorn that do not readily fit into the standard-size shipping crate. Growers must often use a larger crate and still may not be able to get the desired 48 to 60 ears into the crate. Two demonstrations were conducted to determine if planting largeeared varieties closer together would help reduce ear size so that ears would more easily fit into the crate while at the same time increase overall marketable yield. How close can large eared sweetcorn varieties be planted to increase yield while still retaining acceptable ear qualities? Four within-row plant spacings and spring and fall planting dates were evaluated for their effects on yield, ear size, husk cover, and ear tip fill for five cultivars grown on Pahokee muck soil. Within-row spacings were 6, 7, 8, and 9 inches in the spring (30 inches between rows) planted 22 February 2001; and 7, 8, 9, 10, and 12 inches in the fall (34 inches between rows) planted 11 October 2001. The three cultivars for the spring were Abbott & Cobb '945Y', 'Summer Sweet 8102 BC', and Rogers '9686'. Cultivars for the fall were Abbott & Cobb '945Y', AC '844Y', and Rogers 'GSS 5771'. Ears were larger and had less unfilled tips as within-row plant spacing increased. However, marketable yields were generally greater at the 7- and 8-inch spacings for the spring and 8- and 9-inch spacings for the fall.

Keywords


zea mays; ear size; plant population; planting density; sweet corn

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283