FUMIGATION OF CITRUS PLANTS. 
EXPERIMENT 2. 
Condition during fumigation, shade, 67°-69° F. 
Dosage, 14 ounces KCN. 
Date, March 15, 1915, 9.30=10.30 a. m. 
Plants in each test, 2; total, 18. 
Remarks: Plants somewhat hardened. 
Results. 
Condition before fumigation. 
Condition after fumigation. 
Dark, Shade, Sun, | 
Boeck 67° F. die He 
Darr ber) a eee te eae 1 iL 3 
Sates Os eZee saat ial 1 1 3 
DUS HSB oe ee ee el 2+ 2+ 5 
1 Temperature 55°-57° F. throughout day. 
2 Maximum shade temperature during day, 80° F., at 1.30 p. m. 
3 Maximum sun temperature during day, 86° F., at 1. 30 p. m. 
EXPERIMENT 3. 
Condition during fumigation, shade, 57°-58° F. 
Condition after fumigation, shade, 59°-66° F., for 24-hour period. 
Dosage, 1 ounce NaCN. 
Date, September 28, 1915, 7.10—7.50 a. m. 
Plants in each test, 5; total, 15. 
Results. 
Condition before fumigation. 
Shade, 56° F.1| Shade, 90° F.2| Sun, 60° F.3 
1 At cool temperature several hours before fumigation. 
2 At temperature 88°-90° F. for 1 hour before fumigation; previously at 56° F. 
3 In sun for 1} hours before fumigation. 
EXPERIMENT 4. 
Condition during fumigation, shade, 63° F. 
Condition after fumigation, shade, 88°-90° F. 
Dosage, 1 ounce NaCN. 
Date, September 28, 1915, 9-9.40 a. m. 
Plants in each test, 3; total, 12. 
Results. 
Condition before fumigation. 
oS SS 
Shade, 67° F., | Shade, 67° F.,| Sun, 72°F ., Sun, 72°F. 
plants wet. plants dry. plants wet.! plants dry. 
3 3 3 4 
1 Plants thoroughly sprinkled with tap water before fumigation. 
