Timing fungicide sprays based on accumulated rainfall thresholds can be a successful component of integrated management packages that include cultivars with moderate or high levels of resistance to late blight. The simplicity of measuring accumulated rainfall means that the technology can potentially be used by resource-poor farmers in developing countries.
data(huasahuasi)The format is: List of 2 ( AUDPC, YIELD )
blocka factor with levels I II III
trta factor with levels 40mm 7-days Non-application
clona factor with levels C386209.10 C387164.4 Cruza148 Musuq Yungay
y1daa numeric vector, Kgr./plot
y2daa numeric vector, Kgr./plot
y3raa numeric vector, Kgr./plot
d44a numeric vector, 44 days
d51a numeric vector, 51 days
d100a numeric vector, 100 days
The experimental unit was formed by 4 furrows of 1.8 m of length, with distance between furrows from 0.90 m and between plants of 0.30 m. In each furrow was installed 5 plants. The experiment had 3 repetitions. From the beginning of the experiment were fulfilled the following treatments Thresholds 40 mm: Apply the fungicide when 40 precipitation mm accumulates. The minimum interval between applications will be of 7 days. Schedule 7 days: The applications should be carried out every 7 days calendar. Without application: No fungicide application will be made. The evaluation of the severity of the late blight in each treatment started to emergency 80 percentage and then evaluations were made every 7 days until being observed a physiological maturation of the crop.
International Potato Center. CIP - Lima Peru.
library(agricolae)
data(huasahuasi)
names(huasahuasi)
str(huasahuasi$AUDPC)
str(huasahuasi$YIELD)
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