Henry P. Wilson
| Title | Summary | Date | ID | Author(s) | |
|---|---|---|---|---|---|
| 2009 Virginia Peanut Production Guide | PDF (1MB) | May 1, 2009 | 2810-1017 | ||
| Commercial Vegetable Production Recommendations | PDF (3MB) | May 21, 2009 | 456-420 | ||
| Defoliating Cotton under Adverse Conditions: Drought-stress, Cool Temperatures, and Rank Growth | PDF (462KB) |
Modern chemical harvest aids are applied to induce leaf abscission, hasten mature-boll dehiscence, and inhibit regrowth (Gwathmey and Hayes 1997; Snipes and Cathey 1992). Their use can result in increased machine harvest efficiency and fewer lodged plants while reducing boll rot, the trash in seed cotton, and the time from defoliation to harvest (Benedict 1984). The challenge of using harvest aids is the inconsistent way cotton responds to them, making defoliation one of the most unpredictable management practices (Benedict 1984; Gwathmey and Hayes 1997). |
May 1, 2009 | 427-208 | |
| Fine Tuning a Sprayer with "Ounce" Calibration Method | PDF (915KB) |
This extension publication discusses guidelines to quickly evaluate the performance of a sprayer. Sprayer calibration, nozzle discharge, spray pattern uniformity, speed checks, pump performance and plumbing arrangements are evaluated with minimal calculations. Tractor-mounted, pull-type, pick-up-mounted and self-propelled sprayers are available from numerous sources. Rising chemical costs and new low rate chemicals are making accurate application more important than ever before. Proper calibration must be a primary management consideration whether one is a farmer or a custom applicator. Since most pesticides are applied with hydraulic sprayers, users should also know proper application methods, chemical effects on equipment, and correct cleaning and storage methods for hydraulic sprayers. |
May 1, 2009 | 442-453 | |
| Plumbing Systems of Agricultural Sprayers | PDF (1MB) |
The plumbing systems of agricultural sprayers are usually considered foolproof. Sprayer problems may occur if plumbing and/or modifications are improperly done or maintenance is ignored. Retrofitting, addition of electrical control systems, and replacement of pumps or nozzles require proper knowledge of the plumbing system and the implications of these changes to sprayer performance. Routine maintenance of the plumbing system is essential. |
May 1, 2009 | 442-452 | |
| Prevention and Control of Palmer Amaranth in Cotton | PDF (1MB) |
Palmer amaranth (Amaranthus palmeri), a member of the "pigweed" family, is one of the most troublesome weeds in many southern row crops. Seed can germinate all season and plants can grow to over 6 feet in height. Plants have either male flowers that shed pollen or female flowers that can produce up to 600,000 seed per plant. One Palmer amaranth per 30 foot of row can reduce cotton yield by 6 to 12%. |
May 1, 2009 | 2805-1001 | |
| Prevention and Control of Palmer Amaranth in Soybean | PDF (1MB) |
Palmer amaranth (Amaranthus palmeri), a member of the "pigweed" family, is one of the most troublesome weeds in many southern row crops. Seed can germinate all season and plants can grow to over 6 feet in height. Plants have either male flowers that shed pollen or female flowers that can produce up to 600,000 seed per plant. Four Palmer amaranth plants per 100 ft2 of row can reduce soybean yield by 12 to 17%. |
May 1, 2009 | 2808-1006 |