Publications

85. Cannon, J. B., C. Cantrell, T. Astatkie, and V. D. Zheljazkov (2012), Modification of yield and composition of essential oils by distillation time. Industrial Crops and Products. In press.

84. Duston, J. and T. Astatkie (2012), Prey density and non-visual feeding by larval striped bass. Transactions of the American Fisheries Society. In press.

83. Jeliazkova, E. A., C. Balbalian, T. Astatkie and P. Collins (2012), Evaluating natural products for control of black spot disease on roses. Journal of Medicinally Active Plants. 1: 13-18.

82. Liu, K., T. Zhang, C. S. Tan, T. Astatkie and G.W. Price (2012), Crop and soil nitrogen responses to phosphorus and potassium fertilization and drip irrigation under processing tomato. Nutrient Cycling in Agroecosystems. In press.

81. Munroe, M. D., V. D. Zheljazkov, T. Astatkie and G. W. Stratton (2012), Comparison of lead extraction and detection procedures for six Canadian soils. Communications in Soil Science and Plant Analysis. In press.

80. Zheljazkov, V. D. and T. Astatkie (2012), Effect of distillation time on Mentha canadensis essential oil yield and composition. HortScience. In press.

79. Zheljazkov, V. D., T. Astatkie, and V. Schlegel (2012), Effects of distillation time on the Pinus ponderosa essential oil yield, composition, and antioxidant activity. HortScience. In press.

78. Zheljazkov, V. D., T. Astatkie and V. Schlegel (2012), Distillation time changes Oregano essential oil yields and composition, but not the antioxidant or antimicrobial activities. HortScience. In press.

77. Zheljazkov, V. D., and T. Astatkie (2012), Distillation waste water can modify peppermint (Mentha x piperita L.) oil composition. Industrial Crops and Products. 36: 420-426.

76. Zheljazkov, V. D., T. Astatkie, and A. Hristov (2012), Lavender and hyssop productivity, oil content, and bioactivity as a function of harvest time and drying. Industrial Crops and Products. 36: 222-228.

75. Zheljazkov, V.D., B.A. Vick, M.W. Ebelhar, N. Buehring, and T. Astatkie (2012), Nitrogen applications modify seed and oil yields and fatty acid composition of winter mustard. Industrial Crops and Products. 36: 28-32.

74. Zheljazkov, V. D., B. A. Vick, B. S. Baldwin, N. Buehring, T. Astatkie, and B. Johnson (2012), Effect of Planting Date, N rate, and Hybrid on Sunflower (Helianthus annuus L.). Journal of Plant Nutrition. In press.

73. Dobreva, A., N. Kovatcheva, V. D. Zheljazkov, and T. Astatkie (2011), Improvement of essential oil yield of oil-bearing (Rosa damascena Mill.) due to surfactant and maceration. Industrial Crops and Products. 34: 1649-1651.

72. Duston, J., T. Astatkie, and C. Zhang (2011), Hypo-osmoregulatory capacity during smolting of endangered Inner Bay of Fundy Atlantic salmon and other eastern Canadian stocks. Aquaculture. 319: 221-225.

71. Kovatcheva, N., V. D. Zheljazkov, and T. Astatkie (2011), Productivity, Oil Content, Composition, and Bioactivity of Oil-bearing Rose Accessions. HortScience. 46(5): 710-714.

70. Liu, K., T. Zhang, C. S. Tan, and T. Astatkie (2011), Responses of Fruit Yield and Quality of Processing Tomato to Drip-Irrigation and Fertilizers Phosphorus and Potassium. Agronomy Journal. 103: 1339-1345.

69. Worku, M., and T. Astatkie (2011), Row and plant spacing effects on yield and yield Components of soya bean varieties under hot humid tropical environment of Ethiopia. Journal of Agronomy and Crop Science. 197: 67-74.

68. Zheljazkov, V. D., and T. Astatkie (2011), Effect of residual distillation water of 15 plants and three plant hormones on Scotch Spearmint (Mentha x gracilis Sole). Industrial Crops and Products. 33: 704-709.

67. Zheljazkov, V. D., and T. Astatkie (2011), Effect of distillation waste water and plant hormones on Spearmint growth and composition. Journal of the science of food and agriculture. 91: 1135-1141.

66. Zheljazkov, V. D., and T. Astatkie (2011), Effect of plant species and benomyl on lead concentration and removal from lead-enriched soil. HortScience. In press.

65. Zheljazkov, V. D., C. L. Cantrell, and T. Astatkie (2011), Variation in podophyllotoxin concentration in leaves and rhizomes of American mayapple (Podophyllum peltatum L.). Industrial Crops and Products. 33: 633-637.

64. Zheljazkov, V. D., C. L. Cantrell, T. Astatkie, and J. B. Cannon (2011), Lemongrass Productivity, Oil Content, and Composition as a Function of Nitrogen, Sulfur and Harvest Time. Agronomy Journal. 103(3): 805-812.

63. Zheljazkov, V. D., T. Horgan, T. Astatkie, D. Fratesi, and C.C. Mischke (2011), Study on shrimp waste water and vermicompost as a nutrient source for bell peppers. HortScience. 46(11): 1493-1496.

62. Zheljazkov, V. D., B. A. Vick, B. S. Baldwin, N. Buehring, C. Coker, T. Astatkie, and B. Johnson (2011), Oil productivity and composition of sunflower as a function of hybrid and planting date. Industrial Crops and Products. 33: 537-543.

61. Belew, D., T. Astatkie, M. N. Mokashi, Y. Getachew and C. P. Patil (2010), Effects of salinity and mycorrhizal inoculation (Glomus fasciculatum) on growth responses of grape rootstocks (Vitis spp). South African Journal of Enology and Viticulture. 31(2): 82-88.

59. Miller, J. C., T. Astatkie and A. Madani (2010), Soil test phosphorus recovery from livestock manures compared with inorganic fertilizer in soil Incubations. Applied and Environmental Soil Science. Article ID 425613, 6 pages.

58. Wang-Pruski, G., R. H. Coffin, R. D. Peters, K. I. Al-Mughrabi, H. W. Platt, D. Pinto, S. Veenhuis-MacNeill, W. Hardy, S. Lim and T. Astatkie (2010), Phosphorous acid for late blight suppression in potato leaves. Americas Journal of Plant Science and Biotechnology. 4(2): 25-29.

57. Worku, M. and T. Astatkie (2010), Growth responses of arabica coffee (Coffea arabica L.) varieties to soil moisture deficit at the seedling stage at Jimma, Southwest Ethiopia. Journal of Food, Agriculture & Environment. 8(1): 195-200.

56. Worku, M. and T. Astatkie (2010), Dry matter partitioning and physiological responses of Coffea arabica varieties to soil moisture deficit stress at the seedling stage in southwest Ethiopia. African Journal of Agricultural Research. 5(15): 2066-2072.

55. Zheljazkov, V. D., T. Astatkie, T. Horgan and S. M. Rogers (2010), Effect of plant hormones and distillation water on mints. HortScience. 45(9): 1338-1340.

54. Zheljazkov, V.D., C. L. Cantrell, and T. Astatkie (2010), Study on Japanese cornmint in Mississippi. Agronomy Journal. 102(2): 696-702.

53. Zheljazkov, V. D., C. L. Cantrell, and T. Astatkie (2010), Yield and composition of oil from Japanese Cornmint fresh and dry material harvested successively. Agronomy Journal. 102(6): 1652-1656.

52. Zheljazkov, V. D., C. L. Cantrell, T. Astatkie and A. Hristov (2010), Yield, content and composition of peppermint and spearmints as a function of harvesting time and drying. Journal of Agricultural and Food Chemistry. 58: 11400-11407.

51. Zheljazkov, V.D., C. Cantrell, T. Astatkie, and W. Ebelhar (2010), Peppermint productivity and oil composition as a function of nitrogen, growth stage, and harvest time. Agronomy Journal. 102(1): 124-128.

50. Zheljazkov, V.D, C. Cantrell, T. Astatkie, and W. Ebelhar (2010), Productivity, oil content and composition of two spearmint species in Mississippi. Agronomy Journal. 102(1): 129-133.

49. Cutler, C.G., K. Ramanaidu, T. Astatkie and M.B. Isman (2009), Green peach aphid, Myzus persicae (Hemiptera: Aphididae), reproduction during exposure to sublethal concentrations of imidacloprid and azadirachtin. Pest Management Science. 65(2): 205-209.

48. Rupasinghe, H.P.V., L. Wang, N.L. Pitts and T. Astatkie (2009), Baking and sensory characteristics of muffins incorporated with apple skin powder. Journal of Food Quality. 32: 685-694.

47. Sibley, K. J., T. Astatkie, G. Brewster, P. C. Struik, J. F. Adsett, and K. Pruski (2009), Field-scale validation of an automated soil nitrate measurement system. Precision Agriculture. 10: 162-174.

46. Zheljazkov, V. D., B. A. Vick, B. S. Baldwin, N. Buehring, T. Astatkie and B. Johnson (2009), Oil Content and Saturated Fatty Acids in Sunflower as a Function of Planting Date, Nitrogen rate, and Hybrid. Agronomy Journal. 101: 1003-1011.

45. Beavers, R. L., A. M. Hammermeister, B. Frick, T. Astatkie and R. C. Martin (2008), Spring wheat yield response to variable seeding rates in organic farming systems at different fertility regimes. Canadian Journal of Plant Science. 88: 43-52.

44. Wang, B., B. M. Rathgeber, T. Astatkie, and J. L. MacIsaac (2008), The stress and fear levels of microwave toe-treated broiler chickens grown with two photoperiod programs. Poultry Science 87(7). 1248-1252.

43. Zheljazkov, V.D., B. Vick, W. Ebelhar, N. Buehring, B. Baldwin, T. Astatkie, and J. Miller (2008), Yield, oil content and composition of sunflower grown at multiple locations in Mississippi. Agronomy Journal. 100(3): 635-642.

42. Astatkie, T., M. N. Rifai, P. Havard, J. Adsett, M. Lacko-Bartošová, and P. Otepka (2007), Efficiency and performance of hot water, infrared and flame weeder thermal units to control weeds. Biological Agriculture and Horticulture. 25: 1-12.

41. Duston, J., T. Astatkie and S.B. Murray (2007), Effect of salinity at constant 10 oC on grow-out of anadromous Arctic charr from Labrador. Aquaculture. 273: 679-686.

40. Astatkie, T. (2006), Absolute and relative measures for evaluating the forecasting performance of time series models for daily streamflows, Nordic Hydrology. 37: 205-215.

39. Astatkie, T., A . A. Joseph and R. C. Martin (2006), A two-level unreplicated factorial design to determine the effect of organic and inorganic fertilizers on dry mater yield of permanent pasture. Renewable Agriculture and Food Systems. 21: 106-113.

38. Hammermeister, A. M. , T. Astatkie, E. A. Jeliazkova, P. R. Warman and R. Martin (2006), Nutrient supply from organic amendments applied to unvegetated soil, lettuce and orchard grass. Canadian Journal of Soil Science. 86: 21-33.

37. Pruski, K., R. K. Prange, B. J. Daniels-Lake, J. Nowak, T. Astatkie, and D. H. Ronis (2006), Growth-room and field studies with seed tubers treated with Ethylene and 1-methylcyclopropene (MCP) during storage, American Journal of Potato Research. 83: 149-160.

36. Rajasekaran, L. R., T. Astatkie, and C. Caldwell (2006), Seeding rate and seed spacing modulate root yield and recovery of slicer and dicer carrots differently, Scientia Horticulturae. 107: 319-324.

35. Zheljazkov, V. D., T. Astatkie, C. D. Caldwell, J. MacLeod, and M. Grimmett (2006), Compost, manure, and gypsum application to timothy/red clover forage. Journal of Environmental Quality. 35: 2410-2418.

34. Duston, J., T. Astatkie, and P.F. MacIsaac (2005), Genetic influence of parr versus anadromous sires on the life histories of Atlantic salmon (Salmo salar). Canadian Journal of Fisheries and Aquatic Sciences. 62: 2067-2075.

33. Elmi, A.A., T. Astatkie, C. Madramootoo, R. Gordon and D. Burton (2005), Assessment of denitrification gaseous end-products in the soil profile using repeated measures analysis, Journal of Environmental Quality. 34: 446-454.

32. Martin, R. C., T. Astatkie, J. Cooper and A. H. Fredeen (2005), A comparison of methods used to determine biomass on naturalized swards. Journal of Agronomy and Crop Science. 191: 152-160.

31. Pruski, K., T. Astatkie, and J. Nowak (2005), Tissue culture propagation of Mongolian Cherry (P. runus fruticosa L.) and Nanking Cherry (P. tomentosa L.), Plant Cell, Tissue and Organ Culturer. 82: 207-211.

30. Duston, J., T. Astatkie and P.F. MacIsaac (2004), Effect of body size on growth and food conversion of juvenile striped bass reared at 16 to 28 0C in fresh- and sea-water, Aquaculture. 234: 589-600.

29. Rifai, M. N., T. Astatkie, M. Lacko-Bartošová, and P. Otepka (2004), Evaluation of thermal, pneumatic, and biological methods for controlling Colorado Potato Beetle (Leptinotarsa Decemlineata Say). Potato Research. 47: 1-9.

28. Astatkie, T., E. Yiridoe and S. J. Clark (2003), Testing for trend in variability of climate data: measures and temporal aggregation with applications to Canadian data, Theoretical and Applied Climatology. 76: 235-247.

27. Asiedu, S., T. Astatkie and E. Yiridoe (2003), The effect of seed-tuber physiological age and cultivar on early potato production, Journal of Agronomy and Crop Science. 189: 176-184.

26. Duston, J., T. Astatkie and P.F. MacIsaac (2003), Long-to-short photoperiod in winter halves the incidence of sexual maturity among Arctic charr, Aquaculture. 221: 567-580.

25. Kyei-Boahen, S., T. Astatkie, R. Lada, R. Gordon and C. Caldwell (2003), Gas exchange of carrot leaves in response to elevated CO2 concentration, Photosynthetica. 41: 597-603.

24. Kyei-Boahen, S., R. Lada, T. Astatkie, R. Gordon and C. Caldwell (2003), Response of carrots to varying irradiance levels, Photosynthetica. 41: 301-305.

23. Pruski, K., T. Astatkie, P. Duplessis, T. Lewis J. Nowak and P. C. Struik (2003), Use of Jasmonate for conditioning of potato plantlets and microtubers in greenhouse production of minitubers, American Journal of Potato Research. 80: 183-193.

22. Pruski, K., T. Astatkie, P. Duplessis, L. Stewart, J. Nowak and P. C. Struik (2003), Manipulation of microtubers for direct field utilization in seed production, American Journal of Potato Research. 80: 173-181.

21. Wang-Pruski, G., T. Astatkie, H. De Jong, and Y. Leclerc (2003), Genetic and environmental interactions affecting potato after-cooking darkening. Acta Horticulturae. 619:45-52.

20. Fredeen, A. H., T. Astatkie, R. W. Jannasch and R. C. Martin (2002), The productivity of grazing holstein cows in Atlantic Canada, Journal of Dairy Science. 85: 1331-1338.

19. Pruski, K., T. Astatkie and J. Nowak (2002), Jasmonate effects on In Vitro tuberization and tuber bulking in two potato cultivars under different media and photoperiod conditions, InVitro Cellular and Developmental Biology-Plant (IVCDB-Plant). 38(2): 203-209.

18. Pruski, K., T. Astatkie, M. Mirza and J. Nowak (2002), Photoautotrophic micropropagation of Russet Burbank Potato, Plant Cell, Tissue and Organ Culture. 69(2): 197-200.

17. Rifai, M. N., T. Astatkie, M. Lacko-Bartošová, and J. Gadus (2002), Effect of two different thermal units and three types of mulch on weeds in apple orchards, Journal of Environmental Engineering and Science. 1(5): 331-338.

16. Astatkie, T. (2001), Threshold parameter estimation in high-frequency time series, Journal of Ethiopian Statistical Association. 11: 27-42.

15. Astatkie, T., A. Madani, R. Gordon, K. Caldwell and N. Boyd (2001), Seasonal variation of nitrate-nitrogen in the soil profile in a subsurface drained field, Canadian Biosystems Engineering Journal. 43: 1.1-1.6.

14. Boyd, N. S., T. Astatkie, A. H. Fredeen and R. C. Martin (2001), Rotationally stocked beef cattle responses to daily and weekly residence, Journal of Range Management. 54(1): 39-43.

13. Pruski, K., P. Duplessis, T. Lewis, T. Astatkie, J. Nowak and P. C. Struik (2001), Jasmonate effect on In Vitro tuberization of potato (Solanum tuberosum L.) cultivars under light and dark conditions, Potato Research. 44: 315-325.

12. Clark, J. S., E. K. Yiridoe, N. D. Burns and T. Astatkie (2000), Regional climate change: trend analysis of temperature and precipitation series at selected Canadian sites, Canadian Journal of Agricultural Economics. 48: 27-38.

11. Gordon, R., A. Madani, K. Caldwell, N. Boyd, T. Astatkie and R. Jamieson (2000), Subsurface Nitrate-N leaching loss as affected by drainage size and depth in a shallow slowly permeable soil, Canadian Water Resources Journal. 25(4): 331-341.

10. Pruski, K. W., T. Lewis, T. Astatkie and J. Nowak (2000), Micropropagation of Chokecherry and Pincherry cultivars, Plant Cell, Tissue and Organ Culture. 63(2): 93-100.

9. Pruski, K., T. Kozai, T. Lewis, T. Astatkie and J. Nowak (2000), Sucrose and light effects on In Vitro cultures of potato, chokecherry and saskatoon berry during low temperature storage, Plant Cell, Tissue and Organ Culture. 63(3): 215-221.

8. Webb, K. T., C. Wang, T. Astatkie and D. R. Langille (2000), Spatial and temporal trends in soil properties at a soil quality benchmark site in Central Nova Scotia, Canadian Journal of Soil Science. 80: 567-575.

7. Brewster, G. R. and T. Astatkie (1999), The depth distribution of 137Cs in non-eroded soil profiles, Annapolis Valley, Nova Scotia, Canada, Radiochimica Acta. 86: 175-182.

6. Astatkie, T. and W. E. Watt (1998), Multiple input Transfer Function modeling of daily streamflow series using nonlinear inputs, Water Resources Research. 34(10): 2717-2725.

5. Martin, R. C., T. Astatkie and J. M. Cooper (1998a), The effect of soybean variety on corn-soybean intercrop biomass and protein yields, Canadian Journal of Plant Science. 78: 289-294.

4. Martin, R. C., T. Astatkie and J. M. Cooper (1998b), The effect of Bradyrhizobium strains on monocropped and intercropped soybean (Glycine max. L. Merr.) biomass and protein, Journal of Agronomy and Crop Science. 181(1): 1-6.

3. Astatkie, T., D. G. Watts and E. W. Watt (1997), Nested Threshold Autoregressive (NeTAR) Models, International Journal of Forecasting. 13(1): 105-116.

2. Astatkie, T. S. Welling and A. Madani (1997), Comparing subsurface drain size and depth using a nonlinear regression model, Canadian Water Resources Journal. 22(2): 213-222.

1. Astatkie, T., E. W. Watt and D. G. Watts (1996), Nested Threshold Autoregressive (NeTAR) Models for studying sources of nonlinearity in streamflows, Nordic Hydrology. 27(5): 323-336.

1. Sibley, K. J., G. R. Brewster, T. Astatkie, J. F. Adsett and P. C. Struik (2010), In-field measurement of soil nitrate using an ion-selective electrode. In M. K. Sharma (Ed) Advances in Measurement Systems, Sciyo.com, (ISBN 978-953-307-061-2, 592 pages) P1-28.

7. Astatkie, T. and J. Duston (2008), Determining dispersion effect in cultured fish, In 2008 Proceedings of the American Statistical Association, Physical and Engineering Sciences Section [CD-ROM]. Alexandria, VA: American Statistical Association. 4478-4484.

6. Astatkie, T. (2006), Application of two-level un-replicated factorial designs in agricultural field experiments, In 2006 Proceedings of the American Statistical Association, Physical and Engineering Sciences Section [CD-ROM]. Alexandria, VA: American Statistical Association. 1691-1696.

5. Astatkie, T. (2004), Forecasting performance measures for time series models, In 2004 Proceedings of the American Statistical Association, Business and Economic Statistics Section [CD-ROM]. Alexandria, VA: American Statistical Association. 1040-1044.

4. Astatkie, T., E. K. Yiridoe and J. Stephen Clark (2002), Testing for trend in the variability of monthly and seasonal temperature using the range and the standard deviation as measures of variability, in 2002 Proceedings of the American Statistical Association, Statistics and the Environment Section [CD-ROM]. Alexandria, VA: American Statistical Association. 79-83.

3. Astatkie, T. (2000), Comparing Linear and Nonlinear Time Series Models for Real-time Forecasting of Daily Streamflows, in 2000 Proceedings of the American Statistical Association, Statistics and the Environment Section. Alexandria, VA: American Statistical Association. 71-76.

2. Astatkie, T. (1998), Modeling Nonlinear Time Series by Denonlinearizing the Inputs: A Case Study in Hydrology, in 1998 Proceedings of the American Statistical Association, Statistics and the Environment Section. Alexandria, VA: American Statistical Association. 97-102.

1. Astatkie, T., S. Welling and A. Madani (1996), Application of a Nested Exponential Model with Autocorrelated Residuals in Drainage Engineering, in 1996 Proceedings of the American Statistical Association, Physical and Engineering Sciences Section. Alexandria, VA: American Statistical Association. 99-104.