1688:
1698:
1458:
425:
1109:
1722:
1673:
1330:
1668:
181:
1727:
141:
1303:
648:
445:
358:
242:
229:
783:
769:
161:
50:
1627:
839:
811:
755:
392:
1634:
712:
322:
1701:
1349:
1136:
797:
582:
492:
881:
874:
698:
677:
608:
472:
316:
195:
135:
1652:
1483:
1427:
1115:
1095:
691:
642:
399:
378:
337:
296:
262:
215:
175:
76:
1392:
8:
1525:
1323:
915:
867:
825:
741:
628:
602:
575:
512:
459:
372:
344:
201:
1490:
1367:
901:
895:
506:
486:
1609:
1581:
1539:
1447:
853:
588:
540:
439:
155:
64:
1588:
1532:
1504:
1497:
1432:
561:
526:
466:
282:
276:
1574:
1476:
1402:
1397:
1382:
1377:
1372:
622:
405:
1691:
1567:
1553:
1511:
1412:
1316:
302:
1716:
1602:
1595:
1546:
1518:
1442:
1407:
1150:
1417:
1560:
1129:
662:
419:
1457:
1437:
1422:
1357:
1165:
255:
91:
58:
1387:
120:
1362:
931:
726:
1304:
Common Names of
Diseases, The American Phytopathological Society
1663:
554:
1339:
19:
570:
Mycosphaerella leaf spot (ashy leaf spot and fruit spot)
1308:
942:
1714:
672:Phytophthora crown and root rot (sprinkler rot)
1324:
367:Dematophora root rot (Rosellinia root rot)
1331:
1317:
150:Armillaria root rot (shoestring root rot)
792:Rust, pear trellis (European pear rust)
1074:
331:Clitocybe root rot (mushroom root rot)
1715:
985:Associated with low oxygen in storage
862:Thread blight (Hypochnus leaf blight)
130:Anthracnose canker and bull's-eye rot
1312:
1176:
72:Pseudomonas blossom blast and canker
30:
1697:
951:Miscellaneous diseases and disorders
943:Miscellaneous diseases and disorders
1020:Associated with calcium deficiency
13:
1456:
99:
14:
1739:
597:Nectria twig blight (coral spot)
271:Botrytis spur and blossom blight
1696:
1687:
1686:
1674:World Apple and Pear Association
190:Black rot, leaf spot and canker
958:Alfalfa greening (green stain)
1669:Tottori Nijisseiki Pear Museum
210:Black spot (of Japanese pear)
182:Colletotrichum gloeosporioides
1:
1297:
982:Black speck (skin speckling)
969:Localized calcium deficiency
920:and various basidiomycetes
454:Fabraea leaf and fruit spot
414:Elsinoe leaf and fruit spot
7:
1052:Preharvest low temperature
142:Cryptosporiopsis curvispora
10:
1744:
1009:Core breakdown (Bartlett)
806:Rust, Rocky Mountain pear
649:Cryptosporiopsis perennans
446:Cylindrocarpon heteronemum
359:Coprinopsis psychromorbida
243:Coniothecium chomatosporum
230:Helminthosporium papulosum
1682:
1644:
1619:
1468:
1454:
1348:
1338:
1232:Pear ring pattern mosaic
1192:Flemish beauty corky pit
1183:
1081:
949:
784:Gymnosporangium libocedri
778:Rust, Pacific Coast pear
770:Gymnosporangium kernianum
750:Rust, American hawthorne
162:Rhizomorpha subcorticalis
106:
51:Agrobacterium tumefaciens
37:
840:Chondrostereum purpureum
812:Gymnosporangium nelsonii
756:Gymnosporangium globosum
393:Botryosphaeria stevensii
1723:Lists of plant diseases
1272:Quince sooty ring spot
1033:Internal bark necrosis
713:Podosphaera leucotricha
657:Phyllosticta leaf spot
323:Mycosphaerella tassiana
311:Cladosporium fruit rot
1628:Pyrus × bretschneideri
1462:
1137:Pratylenchus penetrans
798:Gymnosporangium fuscum
583:Mycosphaerella sentina
493:Zygophiala jamaicensis
283:Botryotinia fuckeliana
1659:List of pear diseases
1635:Pyrus × sinkiangensis
1460:
1288:Quince yellow blotch
1264:Quince bark necrosis
1041:Mealy core (d`Anjou)
882:Hypochnus ochroleucus
875:Pellicularia koleroga
699:Cephalothecium roseum
678:Phytophthora cactorum
609:Tubercularia vulgaris
473:Entomosporium mespili
317:Cladosporium herbarum
196:Botryosphaeria obtusa
136:Pezicula malicorticus
115:Alternaria fruit rot
1653:Herefordshire Pomona
1428:Stinking Bishop pear
1200:Pear blister canker
1116:Xiphinema vuittenezi
1096:Xiphinema americanum
1083:Nematodes, parasitic
1075:Nematodes, parasitic
1049:Pink end (Bartlett)
692:Trichothecium roseum
643:Neofabraea perennans
400:Physalospora malorum
379:Dematophora necatrix
338:Armillaria tabescens
297:Monilinia fructicola
263:Penicillium expansum
216:Alternaria alternata
176:Glomerella cingulata
77:Pseudomonas syringae
18:list of diseases of
916:Trametes versicolor
868:Corticium stevensii
826:Phialophora malorum
742:Rhizopus stolonifer
629:Fusicladium pyrorum
603:Nectria cinnabarina
576:Mycosphaerella pyri
513:Fusarium lateritium
460:Diplocarpon mespili
373:Rosellinia necatrix
345:Clitocybe tabescens
202:Sphaeropsis malorum
16:The following is a
1728:Pear tree diseases
1463:
1256:Pear vein yellows
1185:Viruslike diseases
1177:Viruslike diseases
902:Cytospora sacculus
896:Valsa ceratosperma
764:Rust, Kern's pear
507:Gibberella baccata
501:Gibberella canker
487:Schizothyrium pomi
426:Sphaceloma pirinum
39:Bacterial diseases
31:Bacterial diseases
1710:
1709:
1484:P. armeniacifolia
1448:Winter Nelis pear
1393:Doyenné du Comice
1295:
1294:
1216:Pear freckle pit
1174:
1173:
1090:Dagger, American
1072:
1071:
993:Boron deficiency
940:
939:
926:Xylaria root rot
854:Gloeodes pomigena
637:Perennial canker
589:Septoria pyricola
541:Cercospora minima
440:Nectria galligena
156:Armillaria mellea
97:
96:
65:Erwinia amylovora
1735:
1700:
1699:
1690:
1689:
1526:P. elaeagrifolia
1333:
1326:
1319:
1310:
1309:
1291:Virus suspected
1283:Virus suspected
1275:Virus suspected
1267:Virus suspected
1259:Virus suspected
1251:Virus suspected
1243:Virus suspected
1240:Pear rough bark
1235:Virus suspected
1227:Virus suspected
1224:Pear red mottle
1219:Virus suspected
1203:Virus suspected
1195:Virus suspected
1181:
1180:
1110:Xiphinema riveri
1079:
1078:
977:Water imbalance
947:
946:
721:Pythium dieback
562:Mucor piriformis
549:Mucor fruit rot
527:Botrytis cinerea
467:Fabraea maculata
434:European canker
387:Diplodia canker
277:Botrytis cinerea
238:Blister disease
104:
103:
35:
34:
1743:
1742:
1738:
1737:
1736:
1734:
1733:
1732:
1713:
1712:
1711:
1706:
1678:
1640:
1620:Natural hybrids
1615:
1491:P. boissieriana
1464:
1452:
1403:Huntington pear
1398:Harovin Sundown
1383:Conference pear
1373:Churchland pear
1344:
1337:
1300:
1248:Pear stony pit
1187:
1179:
1134:
1113:
1085:
1077:
1004:
953:
945:
919:
899:
878:
871:
707:Powdery mildew
695:
646:
626:
623:Venturia pyrina
606:
586:
579:
559:
535:Late leaf spot
510:
490:
470:
463:
443:
423:
406:Diplodia mutila
403:
396:
376:
341:
332:
320:
300:
280:
260:
224:Blister canker
199:
179:
159:
139:
110:
108:Fungal diseases
102:
100:Fungal diseases
41:
33:
12:
11:
5:
1741:
1731:
1730:
1725:
1708:
1707:
1705:
1704:
1694:
1683:
1680:
1679:
1677:
1676:
1671:
1666:
1661:
1656:
1648:
1646:
1645:Related topics
1642:
1641:
1639:
1638:
1631:
1623:
1621:
1617:
1616:
1614:
1613:
1610:P. ussuriensis
1606:
1599:
1592:
1585:
1582:P. salicifolia
1578:
1571:
1564:
1557:
1550:
1543:
1540:P. korshinskyi
1536:
1529:
1522:
1515:
1508:
1501:
1494:
1487:
1480:
1472:
1470:
1466:
1465:
1455:
1453:
1451:
1450:
1445:
1440:
1435:
1430:
1425:
1420:
1415:
1413:Parsonage pear
1410:
1405:
1400:
1395:
1390:
1385:
1380:
1375:
1370:
1365:
1360:
1354:
1352:
1346:
1345:
1336:
1335:
1328:
1321:
1313:
1307:
1306:
1299:
1296:
1293:
1292:
1289:
1285:
1284:
1281:
1277:
1276:
1273:
1269:
1268:
1265:
1261:
1260:
1257:
1253:
1252:
1249:
1245:
1244:
1241:
1237:
1236:
1233:
1229:
1228:
1225:
1221:
1220:
1217:
1213:
1212:
1209:
1205:
1204:
1201:
1197:
1196:
1193:
1189:
1188:
1178:
1175:
1172:
1171:
1161:
1157:
1156:
1146:
1142:
1141:
1125:
1121:
1120:
1105:
1101:
1100:
1091:
1087:
1086:
1076:
1073:
1070:
1069:
1066:
1062:
1061:
1058:
1054:
1053:
1050:
1046:
1045:
1042:
1038:
1037:
1034:
1030:
1029:
1026:
1022:
1021:
1018:
1014:
1013:
1010:
1006:
1005:
1002:
999:
995:
994:
991:
990:Blossom blast
987:
986:
983:
979:
978:
975:
971:
970:
967:
963:
962:
959:
955:
954:
944:
941:
938:
937:
927:
923:
922:
911:
907:
906:
891:
887:
886:
863:
859:
858:
849:
845:
844:
835:
831:
830:
821:
817:
816:
807:
803:
802:
793:
789:
788:
779:
775:
774:
765:
761:
760:
751:
747:
746:
737:
733:
732:
722:
718:
717:
708:
704:
703:
687:
686:Pink mold rot
683:
682:
673:
669:
668:
658:
654:
653:
638:
634:
633:
618:
614:
613:
598:
594:
593:
571:
567:
566:
550:
546:
545:
536:
532:
531:
522:
521:Gray mold rot
518:
517:
502:
498:
497:
482:
478:
477:
455:
451:
450:
435:
431:
430:
415:
411:
410:
388:
384:
383:
368:
364:
363:
354:
350:
349:
333:
328:
327:
312:
308:
307:
303:Monilinia laxa
292:
288:
287:
272:
268:
267:
251:
250:Blue mold rot
247:
246:
239:
235:
234:
225:
221:
220:
211:
207:
206:
191:
187:
186:
171:
167:
166:
151:
147:
146:
131:
127:
126:
116:
112:
111:
101:
98:
95:
94:
89:
85:
84:
73:
69:
68:
61:
55:
54:
47:
43:
42:
32:
29:
25:Pyrus communis
9:
6:
4:
3:
2:
1740:
1729:
1726:
1724:
1721:
1720:
1718:
1703:
1695:
1693:
1685:
1684:
1681:
1675:
1672:
1670:
1667:
1665:
1662:
1660:
1657:
1655:
1654:
1650:
1649:
1647:
1643:
1637:
1636:
1632:
1630:
1629:
1625:
1624:
1622:
1618:
1612:
1611:
1607:
1605:
1604:
1600:
1598:
1597:
1593:
1591:
1590:
1589:P. serikensis
1586:
1584:
1583:
1579:
1577:
1576:
1572:
1570:
1569:
1565:
1563:
1562:
1558:
1556:
1555:
1551:
1549:
1548:
1544:
1542:
1541:
1537:
1535:
1534:
1533:P. hakkiarica
1530:
1528:
1527:
1523:
1521:
1520:
1516:
1514:
1513:
1509:
1507:
1506:
1505:P. calleryana
1502:
1500:
1499:
1498:P. bourgaeana
1495:
1493:
1492:
1488:
1486:
1485:
1481:
1479:
1478:
1474:
1473:
1471:
1467:
1459:
1449:
1446:
1444:
1443:Williams pear
1441:
1439:
1436:
1434:
1433:Taylor's gold
1431:
1429:
1426:
1424:
1421:
1419:
1416:
1414:
1411:
1409:
1408:Le Conte pear
1406:
1404:
1401:
1399:
1396:
1394:
1391:
1389:
1386:
1384:
1381:
1379:
1376:
1374:
1371:
1369:
1366:
1364:
1361:
1359:
1356:
1355:
1353:
1351:
1347:
1343:
1342:
1334:
1329:
1327:
1322:
1320:
1315:
1314:
1311:
1305:
1302:
1301:
1290:
1287:
1286:
1282:
1280:Quince stunt
1279:
1278:
1274:
1271:
1270:
1266:
1263:
1262:
1258:
1255:
1254:
1250:
1247:
1246:
1242:
1239:
1238:
1234:
1231:
1230:
1226:
1223:
1222:
1218:
1215:
1214:
1210:
1208:Pear decline
1207:
1206:
1202:
1199:
1198:
1194:
1191:
1190:
1186:
1182:
1170:
1168:
1167:
1162:
1159:
1158:
1155:
1153:
1152:
1151:Paratylenchus
1147:
1144:
1143:
1140:
1139:
1138:
1132:
1131:
1126:
1123:
1122:
1119:
1118:
1117:
1112:
1111:
1106:
1103:
1102:
1099:
1098:
1097:
1092:
1089:
1088:
1084:
1080:
1067:
1064:
1063:
1059:
1056:
1055:
1051:
1048:
1047:
1043:
1040:
1039:
1035:
1032:
1031:
1027:
1024:
1023:
1019:
1016:
1015:
1011:
1008:
1007:
1000:
997:
996:
992:
989:
988:
984:
981:
980:
976:
973:
972:
968:
965:
964:
960:
957:
956:
952:
948:
936:
934:
933:
928:
925:
924:
921:
918:
917:
912:
909:
908:
905:
904:
903:
898:
897:
892:
890:Valsa canker
889:
888:
885:
884:
883:
877:
876:
870:
869:
864:
861:
860:
857:
856:
855:
850:
848:Sooty blotch
847:
846:
843:
842:
841:
836:
833:
832:
829:
828:
827:
822:
819:
818:
815:
814:
813:
808:
805:
804:
801:
800:
799:
794:
791:
790:
787:
786:
785:
780:
777:
776:
773:
772:
771:
766:
763:
762:
759:
758:
757:
752:
749:
748:
745:
744:
743:
738:
736:Rhizopus rot
735:
734:
731:
729:
728:
723:
720:
719:
716:
715:
714:
709:
706:
705:
702:
701:
700:
694:
693:
688:
685:
684:
681:
680:
679:
674:
671:
670:
667:
665:
664:
659:
656:
655:
652:
651:
650:
645:
644:
639:
636:
635:
632:
631:
630:
625:
624:
619:
616:
615:
612:
611:
610:
605:
604:
599:
596:
595:
592:
591:
590:
585:
584:
578:
577:
572:
569:
568:
565:
564:
563:
557:
556:
551:
548:
547:
544:
543:
542:
537:
534:
533:
530:
529:
528:
523:
520:
519:
516:
515:
514:
509:
508:
503:
500:
499:
496:
495:
494:
489:
488:
483:
480:
479:
476:
475:
474:
469:
468:
462:
461:
456:
453:
452:
449:
448:
447:
442:
441:
436:
433:
432:
429:
428:
427:
422:
421:
416:
413:
412:
409:
408:
407:
402:
401:
395:
394:
389:
386:
385:
382:
381:
380:
375:
374:
369:
366:
365:
362:
361:
360:
355:
353:Coprinus rot
352:
351:
348:
347:
346:
340:
339:
334:
330:
329:
326:
325:
324:
319:
318:
313:
310:
309:
306:
305:
304:
299:
298:
293:
290:
289:
286:
285:
284:
279:
278:
273:
270:
269:
266:
265:
264:
258:
257:
252:
249:
248:
245:
244:
240:
237:
236:
233:
232:
231:
226:
223:
222:
219:
218:
217:
212:
209:
208:
205:
204:
203:
198:
197:
192:
189:
188:
185:
184:
183:
178:
177:
172:
169:
168:
165:
164:
163:
158:
157:
152:
149:
148:
145:
144:
143:
138:
137:
132:
129:
128:
125:
123:
122:
117:
114:
113:
109:
105:
93:
90:
88:Pear decline
87:
86:
83:
79:
78:
74:
71:
70:
67:
66:
62:
60:
57:
56:
53:
52:
48:
45:
44:
40:
36:
28:
26:
22:
21:
1658:
1651:
1633:
1626:
1608:
1601:
1594:
1587:
1580:
1575:P. pyrifolia
1573:
1566:
1559:
1552:
1545:
1538:
1531:
1524:
1517:
1510:
1503:
1496:
1489:
1482:
1477:P. anatolica
1475:
1340:
1211:Phytoplasma
1184:
1164:
1163:
1149:
1148:
1135:
1130:Pratylenchus
1128:
1127:
1114:
1108:
1107:
1094:
1093:
1082:
1025:Green stain
950:
930:
929:
914:
913:
900:
894:
893:
880:
873:
866:
865:
852:
851:
838:
837:
834:Silver leaf
824:
823:
810:
809:
796:
795:
782:
781:
768:
767:
754:
753:
740:
739:
725:
724:
711:
710:
697:
690:
689:
676:
675:
663:Phyllosticta
661:
660:
647:
641:
640:
627:
621:
620:
607:
601:
600:
587:
581:
574:
573:
560:
553:
552:
539:
538:
525:
524:
511:
505:
504:
491:
485:
484:
471:
465:
458:
457:
444:
438:
437:
424:
420:Elsinoe piri
418:
417:
404:
398:
391:
390:
377:
371:
370:
357:
356:
343:
336:
335:
321:
315:
314:
301:
295:
294:
281:
275:
274:
261:
254:
253:
241:
228:
227:
214:
213:
200:
194:
193:
180:
174:
173:
160:
154:
153:
140:
134:
133:
119:
118:
107:
81:
75:
63:
49:
38:
24:
17:
15:
1568:P. pyraster
1554:P. oxyprion
1512:P. communis
1438:Warden pear
1423:Seckel pear
1358:Abate Fetel
1166:Meloidogyne
1068:Senescence
1044:Senescence
1012:Senescence
998:Brown core
966:Bitter pit
256:Penicillium
170:Bitter rot
92:Phytoplasma
59:Fire blight
46:Crown gall
1717:Categories
1603:P. syriaca
1596:P. spinosa
1547:P. nivalis
1519:P. cordata
1418:Pêra Rocha
1368:Choke pear
1298:References
1160:Root-knot
1017:Cork spot
974:Black end
617:Pear scab
481:Fly speck
291:Brown rot
121:Alternaria
1561:P. pashia
1363:Bosc pear
1350:Cultivars
910:Wood rot
820:Side rot
1692:Category
1378:Concorde
1060:Unknown
1057:Rosette
1036:Unknown
1028:Unknown
961:Unknown
82:syringae
1702:Commons
1469:Species
1388:D'Anjou
1124:Lesion
1104:Dagger
1001:High CO
932:Xylaria
727:Pythium
1169:spp.
1154:spp.
1065:Scald
935:spp.
730:spp.
124:spp.
1664:Perry
1341:Pyrus
1133:spp.
666:sp.
558:spp.
555:Mucor
259:spp.
20:pears
1461:Pear
1145:Pin
80:pv.
27:).
1719::
879:=
872:=
696:=
580:=
464:=
397:=
342:=
1332:e
1325:t
1318:v
1003:2
23:(
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