1a.Objectives (from AD-416):
Determine cotton yield and quality response to various irrigation and fungicide treatments.
1b.Approach (from AD-416):
Cotton will be planted and treated at three different times with Actigard fungicide at 4 leaf stage, 14 days, and 28 days after four leaf stage on four different irrigation regimes of overhead irrigation scheduling. Plant phenology status will be taken prior to each Actigard application and continue at various times throughout the growing season. Soil water potential will be used to trigger irrigation events at 40, 70, and 70-40-60 kPa. At harvest, yield and quality will be determined on all treatments and replications. Also, a box harvest will be taken on each treatment and replication to determine where on the plant yield occurred. Yield, lint quality, plant mapping, box mapping, plant phenology, and statistical data will be available to Syngenta.
This research relates to objective 2 of the inhouse project: Develop improved techniques for irrigation scheduling of surface drip irrigation for row crops and vegetables.
This project just completed one year of research with the major objective of determining cotton water use efficiency with and without proprietary fungicide applied. Research data was analyzed and project report submitted to Syngenta. Data analysis indicates no difference in WUE (water use efficiency) with fungicide application however, there were differences in yield with various irrigation rates.