1) Bostan S. Zeki, Dept. of Horticulture, Faculty of Agriculture, Karadeniz TechnicalUniversity, 52100 Ordu, Phone: 9-452-2250577, Fax: 90-452-2251261, Email: zeko_bostan@hotmail.com

2) Bozoğlu Mehmet, Ondokuz Mayıs University, Faculty of Agriculture, Department of Agricultural Economics , 55139 Samsun, Phone: 90-362-457-6020,Fax: 90-362-457-6034, Email: mehmetbo@omu.edu.tr

3) Demiryürek Kürşat, Ondokuz Mayıs University, Faculty of Agriculture, Department of Agricultural Economics, 55139 Samsun,Phone: 90-362-457-6020×1371, Fax: 90-362-457-6034, Email: kursatd@omu.edu.tr

4) Islam Ali, Department of Horticulture, Faculty of Agriculture,Karadeniz Technical University,52100 Ordu, Phone: 90-452-2250577, Fax: 90-452-2251261, Email:ali_islam61@hotmail.com

5) Karadeniz Turan, Department of Horticulture, Faculty of Agriculture, Karadeniz Technical University, 52100 Ordu, Phone: 90-452-2250577, Fax: 90-452-2251261, Email: turankaradeniz@hotmail.com

6) Özenç Damla Bender, Department of Soil Sciences, Faculty of Agriculture, Karadeniz Technical University, 52100 Ordu, Phone: 454-215-5631, Fax: 90-454-215-1883, Email: damlabender@hotmail.com

7) Özenç Nedim , Hazelnut Research Institute, 28200 Giresun, Phone: 454-215-1551, Fax: 90454-215-1883, Email: administrator@giresun.tagem.gov.tr

8) Özguven Ahsen Isik, Çukurova University, Department of Horticulture, 01330 Adana, Fax: 322-338-6447, Email: ahsen@mail.cu.edu.tr

9) Saruhan Islam, Ondokuz Mayis University, Faculty of Agriculture, Plant Protection Department, 55139 Samsun, Phone: 90-3623121919, Fax:90-362-4576034, Email: isaruhan@omu.edu.tr

10) Tuncer Celal, Ondokuz Mayis University, Faculty of Agriculture, Dept. of Plant Protection, 55139 Samsun, Phone: 90-362-3121919, Fax: 90-362-4576034, Email: celalt@omu.edu.tr

11) Akça,İzzet. Ondokuz Mayis University, Faculty of Agriculture, Dept. of Plant Protection, 55139 Samsun, Phone: 90-362-3121919, Fax: 90-362-4576034, Email: iakca@omu.edu.tr

12)Akbas, Birol. Phytopathology, Plant Protection Central Research Institute, Bağdat cad. No: 250 P.O. Box: 49 Yenimahalle, 06172-Ankara, Phone: +903123445994, Fax: +903123151531, Email: birol_akbas@zmmae.gov.tr.

13)Atlamaz, Apdullah. Phytopathology, Plant Protection Central Research Institute, Bagdat cad. No: 250 P.O. Box: 49 Yenimahalle, 06172-Ankara, Phone: +90 312 3445994, Fax: +90 312 3151531, Email: abatl9@hotmail.com.

14) Ceyhan, Vedat, Ondokuz Mayis University, OMU Ziraat Fakultesi, Samsun, 55139, e-mail: vceyhan@omu.edu.tr

15)Cobanoglu, Sultan. Plant Protection, University of Ankara, Agricultural Faculty. Diskapi, 06110-Ankara, Phone: 0090-3123170550, Fax: 0090-3123187029, Email: coban@agri.ankara.edu.tr.

16)Demirci, Tugba. Ankara University, Dep. of Horticulture. Faculty of Agriculture, 06110- Ankara, Phone: +903123170550/1, Fax: +903123179119, Email: tudidem@yahoo.com.

17)Erdogan, Veli. Horticulture, Ankara University, Faculty of Agriculture, Diskapi, 06110- Anakara, Phone: 90-312-3170550, Fax: 90-312-3179119, Email: verdogan@agri.ankara.edu.tr.

18)Kaya, Hüsamettin. Agricultural Mechanization, Hazelnut Research Institute, 28200- Giresun, Phone: +90 454 215 15, Fax: +60 454 215 18, Email: husamettinkaya@mynet.com.

19)Okay, F. Yesim. University of Ankara, Faculty of Agriculture Dept, of Horticulture, 06110-Ankara, Phone: 90-312-3170550, Fax: 90-312-3179119, Email: okay@agri.ankara.edu.tr.

20) Turan, Ali. Hazelnut Research Institute, Enstitusu, 28000-Giresun, Phone: 4542151551, Email: alituran61@hotmail.com.