1. Histological Structure of the Digestive Tract of the Freshwater
Pearl Mussel Hyriopsis (Hyriopsis) bialatus (Bivalvia: Unionidae)
S. Tantiwisawaruji, K. Chatchavalvanich, U. Kovitvadhi
A. Thongpan and S. Kovitvadhi…………….…….…..…………………………….......... 1

2. Yield of Wheat as Affected by Different Factors of Production in Bangladesh
M. Kamrul Hasan, M. Jamal Uddin and M. Abdur Rasdid…………………..….…....…... 11

3. Prediction Equations for Losses from Thai Axial Flow Rice
Combine Harvesters
P. Sangwijit and W. Chinsuwan…………………..……………………………...…..….... 23

4. Testing the Toxic Effects of Six Different Groups of Chemical Insecticides against Tobacco Bud Worm Helicoverpa armigera Hub.Lepidoptera: Noctuidae in FCV Tobacco Nicotiana tabaccum L.
H. Badshah, A. Wajid, S. Sattar, M. Saeed and S. Anwar …………………...……………. 33

5. Short-term Tillage Effect on Properties of an Arenic Haplustult under
Maize Cultivation in Tropical Savanna Climate, Northeast Thailand
S. Thanachit, I. Kheoruenromne and S. Anusontpornperm ……………………...…..…..... 41

6. AM Fungi and A. chroococcum Affecting Yield, Nutrient Uptake and
Cost Efficacy of Isabgoal (Plantago ovata) in Indian Arid Region
V. Kumar, A. Singh Solanki and S. Sharma………………………………….....…..……... 53

7. Characterization of Thai Bacillus thuringiensis JCPT121 as Promising Biopesticide Against Diamondback Moth (Plutella xylostella L.)
P. Thaphan, S. Keawsompong and J. Chanpaisaeng………………………………..…..... 61