Sweetcorncultivar

Iowa State University, Muscatine Island Research and Demonstration Farm Sweet Corn Cultivar Trial
RFR-A1124
Results and Discussion
The trial was planted on April 29 and most plots had emerged or ‘spiked’ by May 10. Other than a couple of minor storms causing Introduction
some plant lodging, growth was good and plot The 2011 sweet corn cultivar trial evaluated harvest started on July 14. Trial yields and 20 sugary enhanced (se) and synergistic observations are summarized in Tables 1 and 2. (se/sh2) cultivars having bicolored kernels to Fastlane and Vitality were the first cultivars to identify good production and ear characteristics produce harvestable ears. Although eating for local marketing or short-distance shipping. quality was surprisingly good for such early maturing cultivars, their ears were rather small Materials and Methods
and yield below average. Seedling vigor ratings A John Deere 7000 corn planter was used for trial planting on April 29, 2011, in a field with approximately four weeks after planting. Charisma and Temptation received excellent vigor ratings and were easy to identify in the replications. Plots consisted of two rows 25 ft field because of their strong early season plant long spaced 30 in. apart. After emergence, growth. Both cultivars also delivered good plants were thinned to 8 in. apart establishing a yields of attractive ears at harvest. Ambrosia plant density of 26,000/acre. Water was applied and Montauk deserve special comment because they produced the largest ears in the trial and supplement rainfall. Fertilizer was applied had great eating quality too. Primus is a new preplant at the rate of 60 lb/acre N, 45 lb/acre Triplesweet Plus cultivar from Syngenta that is P2O5 and 160 lb/acre K2O and incorporated by advertised as having improved sweetness and chisel plowing and disking. An additional flavor over other Triplesweet cultivars, which 50 lb/acre N was sidedressed on May 11 and have already set a high standard. Judging eating again on June 21. Weeds were controlled with quality by field sampling can be somewhat a crop preemergence application of Dual II subjective but Primus, like many cultivars in Magnum, Atrazine 4L and Callisto herbicides. the trial, produced a good yield of nice looking Ear caterpillars were controlled by insecticide ears that were sweet, tender, and good tasting. sprays starting at ear silking. Data were Both BC 0822 and BC 0805 are Bt (or insect collected by once-over hand harvest when resistant) hybrids that performed well. The BC majority of ears showed developed kernels at 0805 has been an industry standard because of optimum stage for marketing. Yields are of its consistently high yield of large, good-quality marketable ears, which needed to have at least matured one to two days earlier than BC 0805 and had slightly smaller ears but better flag Iowa State University, Muscatine Island Research and Demonstration Farm
Table 1. Sweet corn cultivar seed source and trial comments.
Cultivar
Comments
Short plant but early maturity, some lodging, smallish ears but good flavor Short plant, stalk breakage due to wind, smallish ears but good eating quality Standard - strong plant, attractive ears, good yield, and decent eating quality Good yield, ears attractive but could have been bigger, nice sweet corn flavor Long shanks and flag leaves, slender ears, kernels tender, and sweet Slow early plant growth, short plant, small ears, good eating quality Some stalk lodging, thick ears, good eating quality Excellent seedling vigor, attractive ears, good yield, ‘corn’ flavor Standard – good yield, large ears, tip fill and husk cover could be better Trashy plant, long ear shanks, slender ear, good husk cover and tip fill Short uniform plants, good standability, ears pulled a little hard but attractive Tall plant, some lodging, kernels sweet and crisp Tall plant, long ear shanks, 8 in. long slender ear Long shanks and flag leaves, attractive slender ear, good eating quality High yield of large ears, kernels sweet and tender Bt hybrid, nice clean plant, good husk cover, slender ears Good yield, long ear shanks, kernels tender and sweet Standard - Bt hybrid, produced long shanks and ear, fair tip fill, good eating Slow early plant growth due to herbicide injury aSeed source: CR = Crookham Co., HM = Harris Moran/Mesa Maize, RG = Rogers Brands, Syngenta Seeds, Inc.,
RI = Rispens Seeds, Inc., RU = Rupp Seeds, Inc., SE = Seneca Vegetable Research.

Table 2. Sweet corn cultivar seedling vigor, marketable yield and ear characteristics.

Seedling
Cultivar

Source: http://fpr.extension.iastate.edu/pdf/2011/SweetCornCultivar.pdf