Effect of seed coating on the accuracy of single-seed sowing of sesame under field conditions
Z. B. Barut A C and M. I. Çağırgan BA Department of Agricultural Machinery, Faculty of Agriculture, University of Çukurova, Adana 01330, Turkey.
B Department of Field Crop, Faculty of Agriculture, University of Akdeniz, Antalya 07070, Turkey.
C Corresponding author. Email: zbbarut@cu.edu.tr
Australian Journal of Experimental Agriculture 46(1) 71-76 https://doi.org/10.1071/EA04201
Submitted: 20 September 2004 Accepted: 13 May 2005 Published: 9 February 2006
Abstract
Sesame seed treatments consisted of 2 different coatings and uncoated seeds. These were tested to determine their effect on accuracy of plant spacing after emergence in single-seed sowing under different field conditions. Seedbed treatments were composed of traditional tillage without crop residue and conservative tillage with wheat stubble. To quantify plant spacing accuracy and emergence uniformity, spacing between plants within a row and plant emergence per day were measured. The measurements were used to calculate the quality of feed index, multiples index, skip index, precision, emergence rate index, mean emergence date and the percentage of emergence. It was concluded that seed treatments had a significant effect on multiples index and skip index of horizontal distribution pattern and emergence rate index, mean emergence date and the emergence percentage. The coating acted negatively on seed germination and led to missing plants and less plant spacing uniformity in the row. The shortest emergence date and maximum percentage of emergence and quality of feed index were obtained with uncoated sesame seeds. The parameters, except emergence rate index, were not affected statistically by tillage treatments. It was found that all seeds emerged in less time on conservation tillage plots with stubble.
Additional keywords: plant spacing accuracy, tillage.
Acknowledgments
The authors would like to express their sincere thanks to SUET Saat-und Erntetechnik GmbH in Eschwege, Germany for their cooperation in performing the seed coating of sesame seeds, as well as to the International Atomic Energy Agency for the Research Contract No.10964 and Akdeniz University Research Projects Unit for the support.
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