Journal of Molecular Studies and Medicine Research
Volume 04 - Issue 01 | Year of Publication: 2019
Article Type: Research Article | No. 19 | Country: Kenya | pp. 169-176 | Open Access
Title: Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control
Authors: Murunde, R. Wainwright, H. and Turoop, L.
DOI: http://dx.doi.org/10.18801/jmsmr.040119.19
Title: Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control
Authors: Murunde, R. Wainwright, H. and Turoop, L.
DOI: http://dx.doi.org/10.18801/jmsmr.040119.19
Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control
Abstract
In three separate greenhouse experiments we evaluated the effect of different densities of the mites Amblyseius montdorensis (foliar predator; AM at 0, 5, 10 or 15 per pot), different densities of Hypoaspis sclerotarsa (ground predator; HS at 0. 50, 100 or 150 per pot) or a combination of the two (0AM, 0HS; 15AM, 50HS; 15AM, 100HS; 15AM, 150HS) on emergence of western flower thrips (WFT), Frankliniella occidentalis Pergande (Thysanoptera: Thripidae) from soil; initial start populations of WFT were either small (10) or large (20). A completely randomized design was used and for each experiment there were three replicates per treatment and the experiment was repeated on two occasions. Single applications of A. montdorensis, H. sclerotarsa or a combination of both all had an impact on the number of WFT emerging compared with the control. There was a significant effect of A. montdorensis density on the number of WFT emerging from the soil (F=0.31, P= 0.420 df =1). There was no significant difference in the population densities of WFT emerging from soil in the control and following release of H. sclerotarsa when initial release densities of WFT at the two initial prey densities of 10 and 20. Combined use of A. montdorensis and H. sclerotarsa at a density of 150 with 15 A. montdorensis reduced adult WFT emergence at density of 20 WFT. These findings highlight the potential for a combined use of A. montdorensis with H. sclerotarsa for the control of soil-dwelling stages of thrips.
Key Words: Hypoaspis sclerotarsa, Pupae, Biocontrol, Frankliniella occidentalis and Amblyseius montdorensis
Abstract
In three separate greenhouse experiments we evaluated the effect of different densities of the mites Amblyseius montdorensis (foliar predator; AM at 0, 5, 10 or 15 per pot), different densities of Hypoaspis sclerotarsa (ground predator; HS at 0. 50, 100 or 150 per pot) or a combination of the two (0AM, 0HS; 15AM, 50HS; 15AM, 100HS; 15AM, 150HS) on emergence of western flower thrips (WFT), Frankliniella occidentalis Pergande (Thysanoptera: Thripidae) from soil; initial start populations of WFT were either small (10) or large (20). A completely randomized design was used and for each experiment there were three replicates per treatment and the experiment was repeated on two occasions. Single applications of A. montdorensis, H. sclerotarsa or a combination of both all had an impact on the number of WFT emerging compared with the control. There was a significant effect of A. montdorensis density on the number of WFT emerging from the soil (F=0.31, P= 0.420 df =1). There was no significant difference in the population densities of WFT emerging from soil in the control and following release of H. sclerotarsa when initial release densities of WFT at the two initial prey densities of 10 and 20. Combined use of A. montdorensis and H. sclerotarsa at a density of 150 with 15 A. montdorensis reduced adult WFT emergence at density of 20 WFT. These findings highlight the potential for a combined use of A. montdorensis with H. sclerotarsa for the control of soil-dwelling stages of thrips.
Key Words: Hypoaspis sclerotarsa, Pupae, Biocontrol, Frankliniella occidentalis and Amblyseius montdorensis
MLA
Murunde et al. “Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control.” Journal of Molecular Studies and Medicine Research 04(01) (2019): 169-176.
APA
Murunde, R. Wainwright, H. and Turoop, L. (2019). Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control. Journal of Molecular Studies and Medicine Research, 04(01), 169-176.
Chicago
Murunde, R. Wainwright, H. and Turoop, L. “Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control.” Journal of Molecular Studies and Medicine Research 04(01) (2019): 169-176.
Harvard
Murunde, R. Wainwright, H. and Turoop, L. 2019. Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control. Journal of Molecular Studies and Medicine Research, 04(01), pp. 169-176.
Vancouver
Murunde, R, Wainwright, H and Turoop, L. Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control. Journal of Molecular Studies and Medicine Research. 2019 April 04(01):169-176.
Murunde et al. “Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control.” Journal of Molecular Studies and Medicine Research 04(01) (2019): 169-176.
APA
Murunde, R. Wainwright, H. and Turoop, L. (2019). Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control. Journal of Molecular Studies and Medicine Research, 04(01), 169-176.
Chicago
Murunde, R. Wainwright, H. and Turoop, L. “Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control.” Journal of Molecular Studies and Medicine Research 04(01) (2019): 169-176.
Harvard
Murunde, R. Wainwright, H. and Turoop, L. 2019. Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control. Journal of Molecular Studies and Medicine Research, 04(01), pp. 169-176.
Vancouver
Murunde, R, Wainwright, H and Turoop, L. Combining foliar and soil-active predatory mites (Amblyseius montdorensis and Hypoaspis sclerotarsa) to improve thrips control. Journal of Molecular Studies and Medicine Research. 2019 April 04(01):169-176.
Article Type: Research Article | No. 20| Country: Nigeria | pp. 177-186 | Open Access
Title: Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott)
Authors: Emmanuel Essien Bassey
DOI: http://dx.doi.org/10.18801/jmsmr.040119.20
Title: Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott)
Authors: Emmanuel Essien Bassey
DOI: http://dx.doi.org/10.18801/jmsmr.040119.20
Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott)
Abstract
A study was conducted to establish relationship between pigmentation of leaf sinus and petioles, leaf blight and root rot with morphological characters in taro (Colocasia esculenta). The result showed that fresh weight of corms and cormels correlated positively and significantly with plant height, leaf area, number of cormels, leaf blight, and diameter of leaf sinus. The result also showed positive indirect effects of plant height, length of corms, girth of corms, girth of cormels, leaf blight, root rot, colour of leaf sinus and diameter of sinus with fresh weight of corms and cormels. Primary components identified with fresh weight of corms and cormels include plant height, leaf area, length of corms, girth of corms, length of cormels, leaf blight, root rot and colour of sinus. The result indicate that selection for high yield in Colocasia esculenta could be based on pigmentation of leaf sinus and petioles, resistance to leaf blight and root rot.
Key Words: Colocasia esculenta, Leaf blight, Root rot, leaf sinus, petioles and yield component
Abstract
A study was conducted to establish relationship between pigmentation of leaf sinus and petioles, leaf blight and root rot with morphological characters in taro (Colocasia esculenta). The result showed that fresh weight of corms and cormels correlated positively and significantly with plant height, leaf area, number of cormels, leaf blight, and diameter of leaf sinus. The result also showed positive indirect effects of plant height, length of corms, girth of corms, girth of cormels, leaf blight, root rot, colour of leaf sinus and diameter of sinus with fresh weight of corms and cormels. Primary components identified with fresh weight of corms and cormels include plant height, leaf area, length of corms, girth of corms, length of cormels, leaf blight, root rot and colour of sinus. The result indicate that selection for high yield in Colocasia esculenta could be based on pigmentation of leaf sinus and petioles, resistance to leaf blight and root rot.
Key Words: Colocasia esculenta, Leaf blight, Root rot, leaf sinus, petioles and yield component
MLA
Bassey, E. E. “Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott).” Journal of Molecular Studies and Medicine Research 04(01) (2019): 177-186.
APA
Bassey, E. E. (2019). Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott). Journal of Molecular Studies and Medicine Research, 04(01), 177-186.
Chicago
Bassey, E. E. “Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott).” Journal of Molecular Studies and Medicine Research 04(01) (2019): 177-186.
Harvard
Bassey, E. E. 2019. Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott). Journal of Molecular Studies and Medicine Research, 04(01), pp. 177-186.
Vancouver
Bassey, EE. Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott). Journal of Molecular Studies and Medicine Research. 2019 May 04(01):177-186.
Bassey, E. E. “Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott).” Journal of Molecular Studies and Medicine Research 04(01) (2019): 177-186.
APA
Bassey, E. E. (2019). Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott). Journal of Molecular Studies and Medicine Research, 04(01), 177-186.
Chicago
Bassey, E. E. “Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott).” Journal of Molecular Studies and Medicine Research 04(01) (2019): 177-186.
Harvard
Bassey, E. E. 2019. Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott). Journal of Molecular Studies and Medicine Research, 04(01), pp. 177-186.
Vancouver
Bassey, EE. Associations of pigmentations of leaf sinus and petioles and leaf blight and root rot with yield components in taro (Colocasia esculenta L. Schott). Journal of Molecular Studies and Medicine Research. 2019 May 04(01):177-186.
