EFFECT OF COATING TEMPERATURE AND TIME ON GERMINATION FOR SOME MEDICAL AND AROMATIC-CROP SEEDS

Yehia, I.; Atallah, M.; Eliwa, A.; El Lithy, A. M.

doi:10.21608/mjae.2010.105103

EFFECT OF COATING TEMPERATURE AND TIME ON GERMINATION FOR SOME MEDICAL AND AROMATIC-CROP SEEDS

Document Type : Original Article

Authors

¹ Chief Res., Ag. Eng. Res. Inst., Egypt.

² Res., Ag. Eng. Res. Inst., Egypt.

³ Senior Res., Ag. Eng. Res. Inst., Egypt.

⁴ Associ. Prof, Ag. Eng., Ag. Col., Azhar U., Assiut, Egypt.

10.21608/mjae.2010.105103

Abstract

The objective of this paper is to study the effect of coating temperature and its duration on germination percentage of some medical and aromatic crops (fennel, caraway, coriander, nigella and guar) seeds. The main results in this study can be summarized in the following points:
The fennel, caraway, coriander, nigella and guar seeds germination decreased by 22.5 – 22.9, 22.8 – 24.4, 18.9 – 29.8, 20.1 – 27.5 and 18.1 – 23.7 % by increasing coating temperature from 40 to 70 C^o. Meanwhile, the fennel, caraway, coriander, nigella and guar seeds germination decreased by 16.7 – 35.4, 17.1 – 36, 16.6 – 32.3, 15.2 – 32.2 and 14.3 – 29.8 % by increasing coating time from 30 to 60 min.
The maximum fennel, caraway, coriander, nigella and guar seeds germination of 98.1, 96, 98, 100 and 100 % were obtained with coating temperature of 40 C^o and coating time of 30 min. Meanwhile, the minimum fennel, caraway, coriander, nigella and guar seeds germination of 63.38, 61.43, 66.3, 67.76 and 70.2 % were obtained with coating temperature of 70 C^o and coating time of 70 min.

Main Subjects

Agricultural Power and Machinery Engineering

References

Agricultural Economics Issue, 2003, Central Management of Ag. Economics, Ministry of Ag., Egypt: 1 – 5.

Burris, J. S., Prijic, L. M. And Chen, Y., 1994, A small-scale laboratory fluidized bed seed-coating appratus pp 419-423 in Martin, T. (Ed.), Seed Treatmrent Progress and Prospects, Surrey, British Crop Prot. Council.

Duan, X. and Burris, J. S., 1997, Film coating impairs leaching of germination inhibitors in sugar beet seeds, Crop Science 37 :515-520.

Halmer, P., 1998, Technical and commercial aspects of seed pelleting and film-coating, pp 191-204 in Martin, T. (Ed.), Seed Treatmrent Progress and Prospects, Surrey, British Crop Protection Council.

Hill, H. J., 1997, New developments in seed technology, Proceedings of the Oregon Hort. Soc., Portland, Oregon 88: 123-130.

McGee, D. C., 1995, Advances in seed treatment technology, Technical report no. 11, pp 1-14 in McNicoll, A. (Ed.) Proc. Asia and Pacific Seed Assoc., New Delhi, APSA.

Ni, B. R., 1997, Seed coating, film coating and pelleting, pp 737-747 in Chinese Assoc. of Ag. Sci., DDA, Minis. of Ag., PR China and China Nat. Seed Group Cooperation, (ED.), Seed industry and ag. Dev., Bejing, China Ag. Press.

Robani, H., 1994, Film-coating horticultural seed, HorTech. 4: 104-104.

Taylor, A. G. and Eckenrode, C. J., 1993, Seed coating technologies to apply Trigard for the control of onion maggot and to reduce pesticide application, pp 73-78 in Efforts pertinent to the integrated pest manag. effort at Corrnel U., 1998, NYS IPM Pub. 117.

Taylor. A. G., Harman, G. E. and Nielsen, P. A., 1994, Biological seed treatments using Trichodrina harzianum for horticultural crops, HorTech. 4: 105-109.

Taylor, A. G., Allen, P. S., Bennett, M. A., Bardford, K. J., Burris, J. S. And Misra, M. K., 1 998, Seed enhancements, Seed Sc. Res. 8, USA: 245-256.

Yehia, I., 2008, Factors affecting the design of coating machine for crop seeds, Misr J. Ag. Eng., 25(1): 147-159.