Biofix: 1st male flight
Lower developmental threshold: 55oF
(12.9oC)
Degree-Days to
Complete a Generation: 580 dd F (320 dd C) Every 580 degree days, the peelminer completes a generation. There are 7 flights potential flights in
the San Joaquin Valley and 9 potential flights in the Coachella valley.
Hot summer temperatures tend to stop development of the peelminer in the
summertime.
2009 Tulare County Peelminer Observations
| Date |
Observations of peelminer larvae |
| April 7 | 1st flight of moths: in non-citrus host plants |
| May 26 |
2nd flight of moths: 1st larval generation in walnut stems |
| June 29 |
3rd flight of moths: 1st generation of larvae in pummelos
and |
| July 20 |
4th flight of moths: 2nd generation of larvae in pummelos |
| August 10 |
5th flight of moths: possible 3rd generation larvae in pummelos
and |
| September 7 (predicted) | 6th flight of moths: |
| 7th flight of moths: |
Click here
for graphs of the current accumulation of degree day units. The table
shown below left is for Tulare County and the Foothill Region of
the Central Valley.
Kern County is approximately one week ahead of these figures,
Fresno County is approximately one week behind.
Predicted Peelminer Flight
|
DD As Of |
Tulare County |
||
|
2009 |
2008 |
30 Yr |
|
|
03/31 |
48 | 0 | |
|
04/07 |
0 | 73 | 7 |
|
04/14 |
36 | 164 | 78 |
|
04/21 |
112 | 147 | 150 |
|
04/28 |
176 | 269 | 244 |
|
05/05 |
227 | 335 | 341 |
|
05/12 |
348 | 386 | 444 |
|
05/19 |
460 | 528 | 556 |
|
05/26 |
607 | 624 | 679 |
|
06/02 |
740 | 690 | 806 |
|
06/09 |
853 | 784 | 938 |
|
06/16 |
957 | 933 | 1082 |
|
06/23 |
1088 | 1130 | 1240 |
|
06/30 |
1256 | 1292 | 1406 |
|
07/07 |
1432 | 1433 | 1583 |
|
07/14 |
1604 | 1677 | 1761 |
|
07/21 |
1814 | 1841 | 1928 |
|
07/28 |
2015 | 2020 | 2112 |
|
08/04 |
2215 | 2190 | 2315 |
|
08/11 |
2361 | 2386 | 2515 |
|
08/18 |
2550 | 2558 | 2697 |
|
08/25 |
2706 | 2754 | 2873 |
|
09/01 |
2925 | 2928 | 3043 |
|
09/08 |
3033 | 3070 | 3207 |
|
09/15 |
3235 | 3354 | |
|
09/22 |
3354 | 3504 | |
|
09/29 |
3503 | 3646 | |
|
10/06 |
3616 | 3763 | |
|
10/13 |
3672 | 3858 | |
|
10/20 |
3754 | 3941 | |
|
10/27 |
3840 | 4003 | |
| 11/03 | 3916 | ||
|
DD As Of |
Coachella Valley |
||
|
2009 |
2008 |
30 Yr |
|
|
03/31 |
100 | 121 | 0 |
|
04/07 |
193 | 205 | 13 |
|
04/14 |
292 | 303 | 112 |
|
04/21 |
408 | 394 | 216 |
|
04/28 |
563 | 515 | 333 |
|
05/05 |
648 | 617 | 461 |
|
05/12 |
883 | 670 | 602 |
|
05/19 |
1010 | 818 | 749 |
|
05/26 |
1238 | 989 | 910 |
|
06/02 |
1418 | 1127 | 1086 |
|
06/09 |
1574 | 1323 | 1276 |
|
06/19 |
1753 | 1530 | 1481 |
|
06/26 |
1966 | 1937 | 1703 |
|
07/03 |
2189 | 2190 | 1939 |
|
07/10 |
2441 | 2443 | 2178 |
|
07/17 |
2695 | 2684 | 2425 |
|
07/24 |
2973 | 2925 | 2672 |
|
07/31 |
3252 | 3171 | 2929 |
|
08/07 |
3698 | 3431 | 3188 |
|
08/14 |
3905 | 3674 | 3439 |
|
08/21 |
4178 | 3910 | 3675 |
|
08/28 |
4442 | 4158 | 3917 |
|
09/04 |
4708 | 4395 | 4161 |
|
09/11 |
4632 | 4394 | |
|
09/18 |
4857 | 4606 | |
|
09/25 |
5067 | 4799 | |
|
10/02 |
5280 | 4984 | |
|
10/09 |
5154 | ||
|
10/16 |
5300 | ||
|
10/23 |
5425 | ||
|
10/30 |
5530 | ||