| Autor: |
J. B. Carlton, L. F. Bouse, E. Franz, I. W. Kirk |
| Rok vydání: |
1995 |
| Předmět: |
|
| Zdroj: |
Transactions of the ASAE. 38:389-394 |
| ISSN: |
2151-0059 |
| DOI: |
10.13031/2013.27844 |
| Popis: |
Studies determined the effects of airspeed and spray height of a Cessna AgHusky on airflow and temporal spray deposits in cotton and cantaloupe canopies. Analyses of covariance selected significant covariants which were used to adjust treatment means. Ambient velocity and turbulence intensity in the canopies were used to adjust for aircraft induced airflows. None of the variables studied covaried significantly with deposits in the cantaloupe canopy. Canopy size had the greatest impact on canopy airflows, deposits, and longevity of aircraft effects in cotton. Deposits and mean airflows were greatest in the smaller canopy. Deposits in small cotton for an airspeed of 145 km/h were significantly greater than those for an airspeed of 185 km/h. There were no significant effects on deposit in large cotton. Based on mean and rms velocity in crop canopies, wake effects were significantly greater than ambient for about 5 s in both cotton and cantaloupe canopies. An airspeed of 145 km/h resulted in higher mean air velocities and greater deposits in cantaloupe than an airspeed of 185 km/h. Spray height of 1.8 m resulted in greater mean air velocities, but less spray deposited in cantaloupe than a 3.7 m height. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
