IOP Conference Series: Earth and Environmental Science, 2021
Populations of Eleusine indica glyphosate-sensitive weed seeds taken from Polytechnic Negeri Meda... more Populations of Eleusine indica glyphosate-sensitive weed seeds taken from Polytechnic Negeri Medan Campus. This study aims to examine whether the use of sub-lethal doses of paraquat and glyphosate in three generations can cause a decrease in the sensitivity of the Eleusine indica population to each herbicide. This research was carried out at the Universitas Sumatera Utara Campus with a height of ± 25 m above sea level. This study used a paraquat herbicide under the recommended dosage of 200 g.a.i. ha−1 and glyphosate herbicide under the recommended dose 360 g.a.i. ha−1 with three replications. Data analysis using IBM SPSS Statistics 20 software.
IOP Conference Series: Earth and Environmental Science, 2021
A biotype of Paraquat resistant goosegrass (Eleusine indica (L.) Gaertn.) has envolved in an oil ... more A biotype of Paraquat resistant goosegrass (Eleusine indica (L.) Gaertn.) has envolved in an oil palm plantation in North Sumatera after been treated with Paraquat herbicide in a long period of time. This study aims to investigate the fitness of Paraquat resistant biotype when growing with susceptible biotype in the absence of herbicide. Seeds of Paraquat resistant biotype of Eleusine indica were collected from an oil palm plantation in Deli Serdang and had been proven to have resistant of Paraquat herbicide whereas the susceptible population from a field near campus of Universitas Sumatera Utara which never been exposed to Paraquat herbicide. Both biotypes were planted with proportions of 100 R: 0 S, 75 R: 25 S, 50 R: 50 S, 25 R: 75 S, and 0 R: 100 S with four replications. The result showed that Paraquat resistant biotypes had stronger fitness that the susceptible biotypes.
IOP Conference Series: Earth and Environmental Science, 2021
Improvement efforts to obtain high yield and adaptive varieties can be carried out through plant ... more Improvement efforts to obtain high yield and adaptive varieties can be carried out through plant breeding programs. The success of irradiation in increasing population diversity is determined by plant radiosensitivity. Radiosensitivity aimed to determine a dose that caused plant death (lethal dose) or growth inhibition of 50% of the irradiated population (LD-50). The seeds of rice CV. Sidikalang was irradiated with gamma rays at doses of 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100 and 1200 Gy. The results showed that the value of Lethal Dose (LD-50) on the percentage of germination is 586.446 Gy and the gamma ray irradiation treatment gave different responses to plant height.
IOP Conference Series: Earth and Environmental Science, 2021
The objective of research is Hevea and Ricinus which are two of the latex-producing plant species... more The objective of research is Hevea and Ricinus which are two of the latex-producing plant species. The modelling of protein was obtained from Hevea brasiliensis and Ricinus communis. Identification of small heat shock heat protein 18.1kDa very different between hevea and ricinus to coverage 92% and 69% analyzed by SWISS-MODEL. In addition, the data from similarity, identity, range, and Q-mean were distinct. According to the PHYRE2 analysis, we observed the residue presenting in Hevea and Ricinus not much different (Hevea: 12-158; Ricinus: 11-156). The 3D-ligand site prediction confirms is not found in Hevea as well as Ricinus. Appropriately, the small heat shock protein involved in different species will be helpful in the development of stress tolerance in plant crops, the different homology images and templates were identified as different binding site predictions. These models can be used for supporting the Hevea and Ricinus proteins modeling, mainly in the molecular study.
Caraka Tani: Journal of Sustainable Agriculture, 2018
Eleusine indica populations on oil palm plantations in Deli Serdang Regency have not been reporte... more Eleusine indica populations on oil palm plantations in Deli Serdang Regency have not been reported to be resistant to glyphosate. This study was aimed to report distribution and resistance classification of E. indica population on oil palm plantations in Deli Serdang Regency. The research was conducted on Weed Research Center in Faculty of Agriculture, Universitas Sumatera Utara from October 2016 until August 2017. This research used Randomized Block Design with recommended dose at 720 g a.i.ha-1 of glyphosate and three replications. Population ESU0 (from Politeknik Negeri Medan Ball Field) as a comparison. Data on average survival, mortality, dry weight, resistance classification of E. indica were analyzeds using IBM SPSS Statistics 20 software. The results showed that there were 12 E. indica populations classified as glyphosate-resistant (56.52%), 7 glyphosate-resistant developing (30.43%), and 4 populations classified as glyphosate-susceptible (13.04%) with the recommended dose a...
The presence of Eleusine indica from oil palm plantations in Serdang Bedagai Regency has never be... more The presence of Eleusine indica from oil palm plantations in Serdang Bedagai Regency has never been overall reported glyphosate-resistant. This study aims to distribution mapping and resistance classification of E. indica population to glyphosate herbicide of oil palm plantations in Serdang Bedagai Regency. This research was conducted on Weed Research Center Land in Faculty of Agriculture, Universitas Sumatera Utara in October 2016 to August 2017. This research used glyphosate herbicide with the recommended dose at 720 g ai ha-1 and three replications. Population ESU0 (from Politeknik Negeri Medan Ball Field) as a comparison. Data analysis using IBM SPSS Statistics 20 software. The results showed there E. indica population classified as glyphosate-resistant amount 89.36% (42 population), classified as glyphosate-resistant moderate amount 10,64% (5 population) and there is no population glyphosate-susceptible on oil palm plantations in Serdang Bedagai Regency of recommended dose at 7...
Summary Growth, competitiveness and seed characteristics were compared in paraquat-resistant and ... more Summary Growth, competitiveness and seed characteristics were compared in paraquat-resistant and -susceptible biotypes of Hordeum leporinum Link collected from neighbouring fields. Dry weight and tiller production were greater in the susceptible biotype as compared with the resistant biotype in the absence of competition, however, the reproductive output was the same. Competitiveness in the field was estimated using a replacement series design that showed only slight differences between the two biotypes. There were no differences in seed weight, number of seeds per head, seed viability or seedling establishment between the two biotypes. When grown in pots in monoculture, the production of tillers was the same throughout the growing season, but inflorescences appeared on the resistant biotype earlier and matured earlier than did those of the susceptible biotype. We conclude that under field conditions the resistant biotype does not show a reduction in fitness as compared with the susceptible biotype.
Abstract. Paraquat-resistant biotypes of the closely-related weed species Hordeum leporinum Link ... more Abstract. Paraquat-resistant biotypes of the closely-related weed species Hordeum leporinum Link and H. 91aucum Steud. are highly resistant to paraquat when grown during the normal winter growing season. How-ever, when grown and treated with paraquat in summer, these ...
Weed seeds in the soil per hectare can reach millions of amount and consists of many differentspe... more Weed seeds in the soil per hectare can reach millions of amount and consists of many differentspecies. The depth of the weed seeds can be used as indicator of competitive level between crop andweeds. The research aims to determine the composition and density of seed bank at various level ofsoil depths at “ Balai Benih Palawija ” Tanjung Selamat North Sumatra. Soil Samples warecollected from four soil depths, namely: 0-5 cm, 5-10 cm, 10-15 cm,15-20 cm using metal pipe withdiameter of 3 cm. The parameters measured were the number of weeds that grow by the depth ofsoil, weed composition (%) per depth of soil and weeds growing time per depth of soil.From resultshowed that the highest density of weed seed bank is found at the depth of 0 – 5 cm. Weedcomposition dominated ( 68.9 % ) by broadleaf weeds. There are differences in the composition anddensity of the real seed bank at different depths in the soil in the field area of Balai Benih IndukTanjung Selamat. Composition and density of we...
... (Ir. Edison Purba, MS, Ph.D) Ketua Anggota ... Dr. Ir. B. Sengli. J. Damanik, MSc ANGGOTA : I... more ... (Ir. Edison Purba, MS, Ph.D) Ketua Anggota ... Dr. Ir. B. Sengli. J. Damanik, MSc ANGGOTA : Ir. Edison Purba, MS, Ph.D Iwan Hasrizart: Pertumbuhan Dan Produksi Beberapa Varietas Padi Sawah (Oryza Sativa L.) Pada Pwersiapan Tanah Dan Jumlah Bibit Yang Berbeda, 2008. ...
IOP Conference Series: Earth and Environmental Science, 2021
Populations of Eleusine indica glyphosate-sensitive weed seeds taken from Polytechnic Negeri Meda... more Populations of Eleusine indica glyphosate-sensitive weed seeds taken from Polytechnic Negeri Medan Campus. This study aims to examine whether the use of sub-lethal doses of paraquat and glyphosate in three generations can cause a decrease in the sensitivity of the Eleusine indica population to each herbicide. This research was carried out at the Universitas Sumatera Utara Campus with a height of ± 25 m above sea level. This study used a paraquat herbicide under the recommended dosage of 200 g.a.i. ha−1 and glyphosate herbicide under the recommended dose 360 g.a.i. ha−1 with three replications. Data analysis using IBM SPSS Statistics 20 software.
IOP Conference Series: Earth and Environmental Science, 2021
A biotype of Paraquat resistant goosegrass (Eleusine indica (L.) Gaertn.) has envolved in an oil ... more A biotype of Paraquat resistant goosegrass (Eleusine indica (L.) Gaertn.) has envolved in an oil palm plantation in North Sumatera after been treated with Paraquat herbicide in a long period of time. This study aims to investigate the fitness of Paraquat resistant biotype when growing with susceptible biotype in the absence of herbicide. Seeds of Paraquat resistant biotype of Eleusine indica were collected from an oil palm plantation in Deli Serdang and had been proven to have resistant of Paraquat herbicide whereas the susceptible population from a field near campus of Universitas Sumatera Utara which never been exposed to Paraquat herbicide. Both biotypes were planted with proportions of 100 R: 0 S, 75 R: 25 S, 50 R: 50 S, 25 R: 75 S, and 0 R: 100 S with four replications. The result showed that Paraquat resistant biotypes had stronger fitness that the susceptible biotypes.
IOP Conference Series: Earth and Environmental Science, 2021
Improvement efforts to obtain high yield and adaptive varieties can be carried out through plant ... more Improvement efforts to obtain high yield and adaptive varieties can be carried out through plant breeding programs. The success of irradiation in increasing population diversity is determined by plant radiosensitivity. Radiosensitivity aimed to determine a dose that caused plant death (lethal dose) or growth inhibition of 50% of the irradiated population (LD-50). The seeds of rice CV. Sidikalang was irradiated with gamma rays at doses of 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100 and 1200 Gy. The results showed that the value of Lethal Dose (LD-50) on the percentage of germination is 586.446 Gy and the gamma ray irradiation treatment gave different responses to plant height.
IOP Conference Series: Earth and Environmental Science, 2021
The objective of research is Hevea and Ricinus which are two of the latex-producing plant species... more The objective of research is Hevea and Ricinus which are two of the latex-producing plant species. The modelling of protein was obtained from Hevea brasiliensis and Ricinus communis. Identification of small heat shock heat protein 18.1kDa very different between hevea and ricinus to coverage 92% and 69% analyzed by SWISS-MODEL. In addition, the data from similarity, identity, range, and Q-mean were distinct. According to the PHYRE2 analysis, we observed the residue presenting in Hevea and Ricinus not much different (Hevea: 12-158; Ricinus: 11-156). The 3D-ligand site prediction confirms is not found in Hevea as well as Ricinus. Appropriately, the small heat shock protein involved in different species will be helpful in the development of stress tolerance in plant crops, the different homology images and templates were identified as different binding site predictions. These models can be used for supporting the Hevea and Ricinus proteins modeling, mainly in the molecular study.
Caraka Tani: Journal of Sustainable Agriculture, 2018
Eleusine indica populations on oil palm plantations in Deli Serdang Regency have not been reporte... more Eleusine indica populations on oil palm plantations in Deli Serdang Regency have not been reported to be resistant to glyphosate. This study was aimed to report distribution and resistance classification of E. indica population on oil palm plantations in Deli Serdang Regency. The research was conducted on Weed Research Center in Faculty of Agriculture, Universitas Sumatera Utara from October 2016 until August 2017. This research used Randomized Block Design with recommended dose at 720 g a.i.ha-1 of glyphosate and three replications. Population ESU0 (from Politeknik Negeri Medan Ball Field) as a comparison. Data on average survival, mortality, dry weight, resistance classification of E. indica were analyzeds using IBM SPSS Statistics 20 software. The results showed that there were 12 E. indica populations classified as glyphosate-resistant (56.52%), 7 glyphosate-resistant developing (30.43%), and 4 populations classified as glyphosate-susceptible (13.04%) with the recommended dose a...
The presence of Eleusine indica from oil palm plantations in Serdang Bedagai Regency has never be... more The presence of Eleusine indica from oil palm plantations in Serdang Bedagai Regency has never been overall reported glyphosate-resistant. This study aims to distribution mapping and resistance classification of E. indica population to glyphosate herbicide of oil palm plantations in Serdang Bedagai Regency. This research was conducted on Weed Research Center Land in Faculty of Agriculture, Universitas Sumatera Utara in October 2016 to August 2017. This research used glyphosate herbicide with the recommended dose at 720 g ai ha-1 and three replications. Population ESU0 (from Politeknik Negeri Medan Ball Field) as a comparison. Data analysis using IBM SPSS Statistics 20 software. The results showed there E. indica population classified as glyphosate-resistant amount 89.36% (42 population), classified as glyphosate-resistant moderate amount 10,64% (5 population) and there is no population glyphosate-susceptible on oil palm plantations in Serdang Bedagai Regency of recommended dose at 7...
Summary Growth, competitiveness and seed characteristics were compared in paraquat-resistant and ... more Summary Growth, competitiveness and seed characteristics were compared in paraquat-resistant and -susceptible biotypes of Hordeum leporinum Link collected from neighbouring fields. Dry weight and tiller production were greater in the susceptible biotype as compared with the resistant biotype in the absence of competition, however, the reproductive output was the same. Competitiveness in the field was estimated using a replacement series design that showed only slight differences between the two biotypes. There were no differences in seed weight, number of seeds per head, seed viability or seedling establishment between the two biotypes. When grown in pots in monoculture, the production of tillers was the same throughout the growing season, but inflorescences appeared on the resistant biotype earlier and matured earlier than did those of the susceptible biotype. We conclude that under field conditions the resistant biotype does not show a reduction in fitness as compared with the susceptible biotype.
Abstract. Paraquat-resistant biotypes of the closely-related weed species Hordeum leporinum Link ... more Abstract. Paraquat-resistant biotypes of the closely-related weed species Hordeum leporinum Link and H. 91aucum Steud. are highly resistant to paraquat when grown during the normal winter growing season. How-ever, when grown and treated with paraquat in summer, these ...
Weed seeds in the soil per hectare can reach millions of amount and consists of many differentspe... more Weed seeds in the soil per hectare can reach millions of amount and consists of many differentspecies. The depth of the weed seeds can be used as indicator of competitive level between crop andweeds. The research aims to determine the composition and density of seed bank at various level ofsoil depths at “ Balai Benih Palawija ” Tanjung Selamat North Sumatra. Soil Samples warecollected from four soil depths, namely: 0-5 cm, 5-10 cm, 10-15 cm,15-20 cm using metal pipe withdiameter of 3 cm. The parameters measured were the number of weeds that grow by the depth ofsoil, weed composition (%) per depth of soil and weeds growing time per depth of soil.From resultshowed that the highest density of weed seed bank is found at the depth of 0 – 5 cm. Weedcomposition dominated ( 68.9 % ) by broadleaf weeds. There are differences in the composition anddensity of the real seed bank at different depths in the soil in the field area of Balai Benih IndukTanjung Selamat. Composition and density of we...
... (Ir. Edison Purba, MS, Ph.D) Ketua Anggota ... Dr. Ir. B. Sengli. J. Damanik, MSc ANGGOTA : I... more ... (Ir. Edison Purba, MS, Ph.D) Ketua Anggota ... Dr. Ir. B. Sengli. J. Damanik, MSc ANGGOTA : Ir. Edison Purba, MS, Ph.D Iwan Hasrizart: Pertumbuhan Dan Produksi Beberapa Varietas Padi Sawah (Oryza Sativa L.) Pada Pwersiapan Tanah Dan Jumlah Bibit Yang Berbeda, 2008. ...
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