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CORESTA Congress, Paris, 2006, APOST 22

Effects of sulfur and Thiobacillus inoculants on quality and quantity yields in Virginia tobacco (var. Coker 347)

GHOLIZADEH A.GH.; ALIZADEH GH.R.; GHOLIZADEH A.L.; AHIFAR H.
Tobacco Research Institute, Tirtash, Behshahr, Iran.

This study was performed in RCBD with ten treatments and three replications for two years (2004-2005) in Tirtash Research and Education Center, Iran, to evaluate the effects of different amounts of sulphur and Thiobacillus inoculants with banding and broadcast methods on quality and quantity yields in Virginia Tobacco. Treatments were:
T1: Check treatment - no applied sulphur (S) and Thiobacillus Inoculants (Thio).
T2: No applied S and 5 kg Thio/ha (Banding).
T3: 250 kg S/ha + 5 kg Thio/ha (Banding).
T4: 250 kg S/ha + 5 kg Thio/ha (Broadcast).
T5: 500 kg S/ha + 10 kg Thio/ha (Banding).
T6: 500 kg S/ha + 10 kg Thio/ha (Broadcast).
T7: 750 kg S/ha + 15 kg Thio/ha (Banding).
T8: 750 kg S/ha + 15 kg Thio/ha (Broadcast).
T9: 1000 kg S/ha + 20 kg Thio/ha (Banding).
T10: 1000 kg S/ha + 20 kg Thio/ha (Broadcast).
The amount of Thiobacillus inoculants applied equal to 500 gr. per 25 kg of sulphur. In T2 was supposed that 250 kg sulphur is in one hectare of soil. The analysis of variance results in 2004 showed that none of the treatments had significant effects in %5 level on the aforesaid factors. But, in 2005 results showed that the average price per kg in %1 level and income per hectare in %5 level was significant between treatments. The highest average price per kg and income per hectare was obtained for T7. The results of combined analysis of variance for two years showed that none of the treatments had significant effects in %5 level on the measured factors. But, green and dry yields, the average price per kg and income factors in T7 than T1 were increased %4.8, %4.7, %6 and %10.3 respectively. Also, banding method in all measured factors was better than broadcast method. Therefore, it was recommended to apply 750 kg S/ha + 15 kg Thio/ha with banding method.