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L. Kalesaran
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PENGARUH TERAS BANGKU DALAM MENGURANGI EROSI TANAH PADA LAHAN PERTANIAN DI DESA PONOMPIAAN KABUPATEN BOLAANG MONGONDOW R. Anau; D. Rumambi; L. Kalesaran
COCOS Vol. 15 No. 1 (2023): EDISI JANUARI-MARET 20223
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.42997

Abstract

ABSTRACT The purpose of this study was to calculate the amount of erosion on land using bench terraces compared to land without using bench terraces and also to examine the effect of bench terraces in reducing erosion on agricultural land in Ponompiaan Vilagge, Bolaang Mongondow Regency. The method in this study is an experimental study in open land which was deliberately chosen because it has a certain slope in accordance with the research abjectives. And the data is presented in the form of tables and graphs and then analyzed descriptively. Based on the data obtained that soil and water conservation techniques in this case the use of bench terraces are very effective in preventing erosion in sloping land, data collection in this study was carried out for 51 days with 16 observations, daily rainfall data taken from the nearest station quite consistent with monthly rainfall data for 2021 from the BMKG of North Sulawesi. This study did not measure the intensity of rainfall. The data shows that the amount of rainfall and the duration of the occurrence of rain affect the sediment collected on land using bench terraces and non-terrace land (control). Judging from the existing data, the amount of sediment on the experimental land using the bench terraces was 56.69 kg, while the sediment on the non-core (control) was 163.3 kg. Data from land using bench terraces and non-terrace land (control) showed that the difference in sediment was 65.6 % greater than the sediment collected on nonterrace land (control). Keywords : Erosion, Bench Terrace, Conservation
EVALUASI SISTEM ALOKASI AIR PADA MUSIM TANAM (MT-I) TAHUN 2021 DI DAERAH IRIGASI TALAWAAN KABUPATEN MINAHASA UTARA S. Tombeng; L. Kalesaran; D. Rumambi
COCOS Vol. 15 No. 1 (2023): EDISI JANUARI-MARET 20223
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.42998

Abstract

ABSTRACT Based on data from the Ministry of PUPR as stated in the PUPR Ministerial Regulation No. 14 of 2015 concerning Criteria and Status of Irrigation Areas, the area of the Talawaan Meras Irrigation Area (DI) is 1705 Ha, but over time observations in the field show that its functional area is decreasing. who made this research carried out, with the aim of getting an overview and identification of the components of the irrigation system, in order to be able to assess the condition of the air allocation system in the first planting season (MT-I) in 2021 and to know the management system. 2 This research is carried out directly in the field and data collection is carried out using a survey method to selected respondents, and measurement or analysis of variables related to irrigation networks is carried out directly on the research object. Based on the data and information from the research, it can be said that, the condition of the irrigation infrastructure at the research site on the Talawaan irrigation network right from tapping gate 3, starting from dams, primary canals, secondary canals, tertiary canals, sharetapping buildings and sluice gates is still complete. and works well, so that the water discharge allocated at the intake point of tapping door 3 is sufficient so that it can meet the needs of the tertiary plots in the research location. Primary and secondary irrigation networks are still running well, while tertiary irrigation networks are relatively poorly managed due to the inactivity of P3A, so indications of decreasing functional area in the Talawaan Meras Irrigation Area are not proven at the study site, and are thought to occur in other locations. Keywords : Evaluation, Water Allocation, Growing Season.