No State Fair Exhibit.
The Indiana 4-H Corn Project has three levels, each with its own project manual. These levels are:
BEGINNER -grades 3 and 4
INTERMEDIATE -grades 5, 6 and 7
ADVANCED –grades 8, 9, 10, 11 and 12.
Completed record sheets are due in to the Extension Office on or before June 29, 4:00 PM. No records, or late/incomplete record sheets/manuals will result in an exhibit being considered for EXHIBITION ONLY—NO PLACING.
When applicable, refer to “Poster Construction Rules” on page 24 of your Handbook.
BEGINNER (GRADES 3 AND 4) FAIR EXHIBIT:
You have a choice of three to choose from and are to complete a different activity each year.
1. "The Parts of a Corn Plant" (see activity 4). Display a full grown corn plant (including roots), with the plant parts correctly identified and labeled, using shipping tags or 3x5 cards.
2. "Identifying Some Pests of Corn" (see Activity 5, 6 and 7). On each of two shipping tags or 3x5 cards, put a picture of a corn insect (or the actual bug itself), its name, and the plant part it attacks. Do the same for two corn diseases. Then on a full grown corn plant that you've prepared for exhibiting, attach the four tags or cards to the specific plant parts affected by those insects and diseases.
3. "Effects of Planting Depth of Corn Growth" (see Activity 3). Exhibit four containers of growing corn that were seeded at the same time, but at 1-inch, 2-inch, 3-inch and 4-inch depths, with a record of your observation displayed on an 8 1/2 x 11 card.
INTERMEDIATE (GRADES 5, 6 AND 7) FAIR EXHIBIT:
Choose one of the following. (Do not repeat an exhibit).
1. "My Own Corn Germination Test" (see Activity 8). Starting two weeks before the fair, do for the first time or repeat Activity 8, in which you run a corn germination test for one of the hybrids you planted. Display your germinated seed, together with a card showing (1) the germination percentage that was listed on the seed corn tag, and (2) the germination percentage resulting from your test and how you figured it (see Step D of Activity 8).
2. "Effects of Weed Competition on Corn Growth" (see Activity 11). Starting 4 weeks before the fair, do for the first time or repeat Activity 11, where you grow corn in containers under three levels of weed control--continuously weeded, once weeded, and never weeded. Display the three containers, together with a card on which you recorded average plant height, number of leaves, leaf color, and any other observations of the corn in each container at the end of week 4 only. (Don't pull up the plants to measure root length until after exhibiting).
3. "Know How to Read Pesticide Labels" (see Activity 13). Select a weed, insect or disease control chemical that is approved for use on corn, read the 12 parts of the pesticide label and write down the information from each part as outlined in Step B of Activity 13. Then make a display that includes: (I) the pesticide container (empty and thoroughly cleaned) with label attached, highlighting with a red marker everything on that label that has to do with safety; (2) the information you recorded for the 12 label parts, and (3) pictures, drawings, or actual specimens of at least two of the weeds, insects or diseases that the chemical helps control.
4. "Making the Farmstead Safer" (see Activities 16 and 17). From the 40 item farm safety checklist in Activity 16, find four problems that need correcting on the farm you inspected as outlined in Activity 17. Take a picture or series of pictures of each problem before it was corrected and again after it was corrected. Display your photographs with brief explanations of the specific hazards under the "before" pictures, and how and when they were corrected under the "after" pictures.
5. "The Role of Corn in Other Foods" (see Activity 22). In your kitchen or at the grocery store, find four food items, each of which contains a different type of corn or corn product as an ingredient. Display those four food items, with a card accompanying each one, naming the corn product contained and briefly explaining the role it plays as an ingredient.
ADVANCED (GRADES 8-12) FAIR EXHIBIT
Here are eight advanced-level corn project activities to choose from for making your county 4-H fair exhibit and what each one should include. Use your imagination in making an attractive display within a maximum space of 3 feet by 5 feet. You cannot exhibit the same activity twice.
1. "Plant Nutrient Deficiencies" (see Activity #1). Beginning four weeks before the fair, follow the steps as listed in Activity #1 for comparative plant growth. Display your grown plants, labeling the soil used in each pot along with your completed observation chart (enlarged). Label the nutrient deficiency symptom, if any, on the appropriate plant(s), describing what you saw that made you feel this was the deficiency.
2. "Fertilizer Nutrient Calculations" (see Activity #3). Display an enlarged chart (Activity #3 part B) showing the information on six fertilizers you investigated. Display the label from the analysis you chose for your field and explain why it was chosen. Then in the rest of your display, show your answers to question C (2) of Activity #3.
3. "Fertilizer Cost Comparison" (see Activity #5). In a chart display form, show your calculations on three different combinations of fertilizer mixtures and the cost of each. Use the cost figures given in Activity #5 or actual costs you obtain from your fertilizer dealer. Explain which combination and form (bag, bulk, liquid) you would choose and why.
4. "My 4-H Corn Project Field's Erosion Rate" (see Activity #6). In exhibiting how you figured soil loss for your corn project field, (1) display the soil survey map for this field; (2) in chart form, list the different soil types and approximate acres of each; (3) display your calculations for parts C, D, and E from Activity #6; and (4) provide other information you learned that your neighbors might be interested in knowing.
5. "Best Tillage-Planting System for My 4-H Corn Project Field" (see Activity #7). Display the county soil-survey map of your corn project field, along with an enlarged version of your "4-H Corn Project Field Tillage-Planting System Adaptability Rating Worksheet." Also display your answers to Part G (I) of Activity #7.4.
6. "Cross-, Self-, and Open-Pollination Experiment" (see Activity #8). Display ears of corn by color as explained by chart in Part B of Activity #8. Be sure in your display to list the information asked for in Part A. List any interesting problems (and how you solved them) or observations you made while conducting this experiment.
7. "My Corn Performance Trial Results" (see Activity #9). This display will need to be from your trial last year, since one from the current year would not be complete. Enlarge and display your informational charts from Parts A and B in Activity #9. List any problems (and how you solved them) or interesting observations you made while conducting this performance trial.
8. "Last Safe Planting Date for Corn Hybrids" (see Activity #10). In an attractive, readable display, list all applicable charts needed to figure the last safe planting dates for dent corn hybrids. Identify three different hybrids (one from each maturity group: early-, mid-, or late-season), and show how you calculated the last safe planting date for each. Also, list the advantages for growing each one.