Determination of Critical Weed Competition Period in Roselle (<i>Hibiscus sabdariffa</i> L.) Production at Wondo Genet, Southern Ethiopia

Ano Wariyo; Desta Abayechaw; Negasu Guteta

doi:doi:10.11648/j.ajpb.20220702.12

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Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia

Ano Wariyo, Desta Abayechaw, Negasu Guteta

Published in American Journal of Plant Biology (Volume 7, Issue 2)

Received: 1 March 2022 Accepted: 6 April 2022 Published: 14 April 2022

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Abstract

Among the biotic factors, weeds caused significant effects on the yield of roselle and play the greatest role in the production system. With this in mind, the study was carried out at Wondo Genet Rift Valley of Ethiopia to determine the critical weed competition period for growth, yield, and yield components of roselle under rainfed conditions. The experimental treatments consisted of a quantitative series of both the increasing duration of weedy periods and the length of the weed-free periods using Randomized Complete Block Design (RCBD) with three replications. Data of growth and yield-related parameters were timely collected following their respective standard methods and procedures and further subjected to analysis of variance (ANOVA) using SAS computer software version 9.4. The results analyzed showed that the weed competition duration had a significant influence on the number of primary branches per plant, the number of capsules /plants, fresh and dry calyx yield/plant, thousand seed weight, and seed yield kg ha^-1. The highest fresh and dry calyx yield was recorded from the weed-free check (15348.60kg ha^-1) and (1389.42 kg ha^-1) whereas the lowest was from the weedy-check (1009.70 kg ha^-1) and weedy for 75DACE (Days After Crop Emergence) (242.57 kg ha^-1), respectively. The highest seed yield was recorded from the weed-free check (39.03 kg ha^-1) whereas the lowest was from the weedy check (4.76 kg ha^-1). The yield losses of roselle were estimated based on fresh and dry calyx yield. Thus, the highest yield loss of fresh and dry calyx yield was recorded in the weedy-check (93.42%) and weedy for 90 (82.54%) DACE whereas the lowest was in the weed-free check (0.00%), respectively. To determine the beginning and the end of the critical period of crop-weed competition 5 and 10% acceptable yield loss levels were used. Therefore, to reduce the yield losses by more than 10% and higher economic return, plants must be kept weeds-free within 60 to 90DACE to reduce the risk of economic yield losses as it is the critical period of weed-crop competition in roselle plants.

Published in	American Journal of Plant Biology (Volume 7, Issue 2)
DOI	10.11648/j.ajpb.20220702.12
Page(s)	95-102
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Critical Period, Roselle, Weed Species, Yield Losses

References

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APA Style

Ano Wariyo, Desta Abayechaw, Negasu Guteta. (2022). Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia. American Journal of Plant Biology, 7(2), 95-102. https://doi.org/10.11648/j.ajpb.20220702.12

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ACS Style

Ano Wariyo; Desta Abayechaw; Negasu Guteta. Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia. Am. J. Plant Biol. 2022, 7(2), 95-102. doi: 10.11648/j.ajpb.20220702.12

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AMA Style

Ano Wariyo, Desta Abayechaw, Negasu Guteta. Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia. Am J Plant Biol. 2022;7(2):95-102. doi: 10.11648/j.ajpb.20220702.12

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@article{10.11648/j.ajpb.20220702.12,
  author = {Ano Wariyo and Desta Abayechaw and Negasu Guteta},
  title = {Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia},
  journal = {American Journal of Plant Biology},
  volume = {7},
  number = {2},
  pages = {95-102},
  doi = {10.11648/j.ajpb.20220702.12},
  url = {https://doi.org/10.11648/j.ajpb.20220702.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpb.20220702.12},
  abstract = {Among the biotic factors, weeds caused significant effects on the yield of roselle and play the greatest role in the production system. With this in mind, the study was carried out at Wondo Genet Rift Valley of Ethiopia to determine the critical weed competition period for growth, yield, and yield components of roselle under rainfed conditions. The experimental treatments consisted of a quantitative series of both the increasing duration of weedy periods and the length of the weed-free periods using Randomized Complete Block Design (RCBD) with three replications. Data of growth and yield-related parameters were timely collected following their respective standard methods and procedures and further subjected to analysis of variance (ANOVA) using SAS computer software version 9.4. The results analyzed showed that the weed competition duration had a significant influence on the number of primary branches per plant, the number of capsules /plants, fresh and dry calyx yield/plant, thousand seed weight, and seed yield kg ha-1. The highest fresh and dry calyx yield was recorded from the weed-free check (15348.60kg ha-1) and (1389.42 kg ha-1) whereas the lowest was from the weedy-check (1009.70 kg ha-1) and weedy for 75DACE (Days After Crop Emergence) (242.57 kg ha-1), respectively. The highest seed yield was recorded from the weed-free check (39.03 kg ha-1) whereas the lowest was from the weedy check (4.76 kg ha-1). The yield losses of roselle were estimated based on fresh and dry calyx yield. Thus, the highest yield loss of fresh and dry calyx yield was recorded in the weedy-check (93.42%) and weedy for 90 (82.54%) DACE whereas the lowest was in the weed-free check (0.00%), respectively. To determine the beginning and the end of the critical period of crop-weed competition 5 and 10% acceptable yield loss levels were used. Therefore, to reduce the yield losses by more than 10% and higher economic return, plants must be kept weeds-free within 60 to 90DACE to reduce the risk of economic yield losses as it is the critical period of weed-crop competition in roselle plants.},
 year = {2022}
}

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TY  - JOUR
T1  - Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia
AU  - Ano Wariyo
AU  - Desta Abayechaw
AU  - Negasu Guteta
Y1  - 2022/04/14
PY  - 2022
N1  - https://doi.org/10.11648/j.ajpb.20220702.12
DO  - 10.11648/j.ajpb.20220702.12
T2  - American Journal of Plant Biology
JF  - American Journal of Plant Biology
JO  - American Journal of Plant Biology
SP  - 95
EP  - 102
PB  - Science Publishing Group
SN  - 2578-8337
UR  - https://doi.org/10.11648/j.ajpb.20220702.12
AB  - Among the biotic factors, weeds caused significant effects on the yield of roselle and play the greatest role in the production system. With this in mind, the study was carried out at Wondo Genet Rift Valley of Ethiopia to determine the critical weed competition period for growth, yield, and yield components of roselle under rainfed conditions. The experimental treatments consisted of a quantitative series of both the increasing duration of weedy periods and the length of the weed-free periods using Randomized Complete Block Design (RCBD) with three replications. Data of growth and yield-related parameters were timely collected following their respective standard methods and procedures and further subjected to analysis of variance (ANOVA) using SAS computer software version 9.4. The results analyzed showed that the weed competition duration had a significant influence on the number of primary branches per plant, the number of capsules /plants, fresh and dry calyx yield/plant, thousand seed weight, and seed yield kg ha-1. The highest fresh and dry calyx yield was recorded from the weed-free check (15348.60kg ha-1) and (1389.42 kg ha-1) whereas the lowest was from the weedy-check (1009.70 kg ha-1) and weedy for 75DACE (Days After Crop Emergence) (242.57 kg ha-1), respectively. The highest seed yield was recorded from the weed-free check (39.03 kg ha-1) whereas the lowest was from the weedy check (4.76 kg ha-1). The yield losses of roselle were estimated based on fresh and dry calyx yield. Thus, the highest yield loss of fresh and dry calyx yield was recorded in the weedy-check (93.42%) and weedy for 90 (82.54%) DACE whereas the lowest was in the weed-free check (0.00%), respectively. To determine the beginning and the end of the critical period of crop-weed competition 5 and 10% acceptable yield loss levels were used. Therefore, to reduce the yield losses by more than 10% and higher economic return, plants must be kept weeds-free within 60 to 90DACE to reduce the risk of economic yield losses as it is the critical period of weed-crop competition in roselle plants.
VL  - 7
IS  - 2
ER  -

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Author Information

Ano Wariyo

Department of Pathology, Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia
Desta Abayechaw

Department of Agronomy, Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia
Negasu Guteta

Department of Entomology, Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia

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APA Style

Ano Wariyo, Desta Abayechaw, Negasu Guteta. (2022). Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia. American Journal of Plant Biology, 7(2), 95-102. https://doi.org/10.11648/j.ajpb.20220702.12

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ACS Style

Ano Wariyo; Desta Abayechaw; Negasu Guteta. Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia. Am. J. Plant Biol. 2022, 7(2), 95-102. doi: 10.11648/j.ajpb.20220702.12

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AMA Style

Ano Wariyo, Desta Abayechaw, Negasu Guteta. Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia. Am J Plant Biol. 2022;7(2):95-102. doi: 10.11648/j.ajpb.20220702.12

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@article{10.11648/j.ajpb.20220702.12,
  author = {Ano Wariyo and Desta Abayechaw and Negasu Guteta},
  title = {Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia},
  journal = {American Journal of Plant Biology},
  volume = {7},
  number = {2},
  pages = {95-102},
  doi = {10.11648/j.ajpb.20220702.12},
  url = {https://doi.org/10.11648/j.ajpb.20220702.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpb.20220702.12},
  abstract = {Among the biotic factors, weeds caused significant effects on the yield of roselle and play the greatest role in the production system. With this in mind, the study was carried out at Wondo Genet Rift Valley of Ethiopia to determine the critical weed competition period for growth, yield, and yield components of roselle under rainfed conditions. The experimental treatments consisted of a quantitative series of both the increasing duration of weedy periods and the length of the weed-free periods using Randomized Complete Block Design (RCBD) with three replications. Data of growth and yield-related parameters were timely collected following their respective standard methods and procedures and further subjected to analysis of variance (ANOVA) using SAS computer software version 9.4. The results analyzed showed that the weed competition duration had a significant influence on the number of primary branches per plant, the number of capsules /plants, fresh and dry calyx yield/plant, thousand seed weight, and seed yield kg ha-1. The highest fresh and dry calyx yield was recorded from the weed-free check (15348.60kg ha-1) and (1389.42 kg ha-1) whereas the lowest was from the weedy-check (1009.70 kg ha-1) and weedy for 75DACE (Days After Crop Emergence) (242.57 kg ha-1), respectively. The highest seed yield was recorded from the weed-free check (39.03 kg ha-1) whereas the lowest was from the weedy check (4.76 kg ha-1). The yield losses of roselle were estimated based on fresh and dry calyx yield. Thus, the highest yield loss of fresh and dry calyx yield was recorded in the weedy-check (93.42%) and weedy for 90 (82.54%) DACE whereas the lowest was in the weed-free check (0.00%), respectively. To determine the beginning and the end of the critical period of crop-weed competition 5 and 10% acceptable yield loss levels were used. Therefore, to reduce the yield losses by more than 10% and higher economic return, plants must be kept weeds-free within 60 to 90DACE to reduce the risk of economic yield losses as it is the critical period of weed-crop competition in roselle plants.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Determination of Critical Weed Competition Period in Roselle (Hibiscus sabdariffa L.) Production at Wondo Genet, Southern Ethiopia
AU  - Ano Wariyo
AU  - Desta Abayechaw
AU  - Negasu Guteta
Y1  - 2022/04/14
PY  - 2022
N1  - https://doi.org/10.11648/j.ajpb.20220702.12
DO  - 10.11648/j.ajpb.20220702.12
T2  - American Journal of Plant Biology
JF  - American Journal of Plant Biology
JO  - American Journal of Plant Biology
SP  - 95
EP  - 102
PB  - Science Publishing Group
SN  - 2578-8337
UR  - https://doi.org/10.11648/j.ajpb.20220702.12
AB  - Among the biotic factors, weeds caused significant effects on the yield of roselle and play the greatest role in the production system. With this in mind, the study was carried out at Wondo Genet Rift Valley of Ethiopia to determine the critical weed competition period for growth, yield, and yield components of roselle under rainfed conditions. The experimental treatments consisted of a quantitative series of both the increasing duration of weedy periods and the length of the weed-free periods using Randomized Complete Block Design (RCBD) with three replications. Data of growth and yield-related parameters were timely collected following their respective standard methods and procedures and further subjected to analysis of variance (ANOVA) using SAS computer software version 9.4. The results analyzed showed that the weed competition duration had a significant influence on the number of primary branches per plant, the number of capsules /plants, fresh and dry calyx yield/plant, thousand seed weight, and seed yield kg ha-1. The highest fresh and dry calyx yield was recorded from the weed-free check (15348.60kg ha-1) and (1389.42 kg ha-1) whereas the lowest was from the weedy-check (1009.70 kg ha-1) and weedy for 75DACE (Days After Crop Emergence) (242.57 kg ha-1), respectively. The highest seed yield was recorded from the weed-free check (39.03 kg ha-1) whereas the lowest was from the weedy check (4.76 kg ha-1). The yield losses of roselle were estimated based on fresh and dry calyx yield. Thus, the highest yield loss of fresh and dry calyx yield was recorded in the weedy-check (93.42%) and weedy for 90 (82.54%) DACE whereas the lowest was in the weed-free check (0.00%), respectively. To determine the beginning and the end of the critical period of crop-weed competition 5 and 10% acceptable yield loss levels were used. Therefore, to reduce the yield losses by more than 10% and higher economic return, plants must be kept weeds-free within 60 to 90DACE to reduce the risk of economic yield losses as it is the critical period of weed-crop competition in roselle plants.
VL  - 7
IS  - 2
ER  -

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