| Autor: |
Nelson, J. M., Briggs, R. E., Hart, G. |
| Rok vydání: |
1990 |
| Předmět: |
|
| Druh dokumentu: |
Článek |
| Popis: |
A field study was conducted at the Maricopa Agricultural Center to determine the effect of nitrogen fertility level on the effectiveness of PIX and defoliants for short- season - cotton production. Increasing the nitrogen fertility level from 90 lbs N/A to 240 lbs N/A increased lint yields from 2.23 to 3.14 bales/A, respectively, in a 157-day growing season. FIX treatments did not promote earliness, and resulted in yield reductions. Increasing the application rates of Dropp from 0.1 to 0.2 lbs a.i./A and Def-6 from 0.75 to 1.13 lbs a.i./A resulted in increases in leaf drop. There was a significant linear decrease in the effectiveness of defoliants as the petiole NO3 N content increased from 850 to 2450 ppm. |
| Databáze: |
Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|
