Electronic Theses and Dissertation

Peran irigasi memudahkan petani dalam pengolahan tanah, sebagai penyedia air bagi
tanaman, memudahkan penggunaan pupuk dan obat-obatan, serta menekan perkembangan
hama penyakit dan gulma. Sumber air irigasi biasanya dapat berupa air permukaan dan air
tanah yang meliputi air sungai, waduk dan danau. Air yang digunakan dalam kegiatan
pertanian sebaiknya memenuhi standar baku mutu air irigasi sehingga air irigasi tersebut
layak dialirkan untuk tanaman padi sawah. Kualitas air irigasi penting diketahui sebagai
upaya dalam pengelolaan dan penggunaan air irigasi oleh petani untuk pengairan lahan
sawah. Hal ini karena kualitas air yang baik tidak akan mengganggu pertumbuhan tanaman
dan produksi. Kualitas air yang buruk dapat menimbulkan masalah lingkungan
Metode yang digunakan dalam penelitian ini adalah metode deskriptif dengan
melakukan survei dan pengambilan sampel air pada daerah Irigasi Krueng Aceh Kecamatan
Seulimeum Kabupaten Aceh Besar. Sampel air diambil pada 9 titik sampel yaitu: pada
bendungan (1 sampel air), saluran primer (2 sampel air), saluran sekunder (2 sampel air),
saluran tersier (2 sampel air), dan saluran kuarter (2 sampel air). Untuk parameter hasil
analisis di cocokkan dengan referensi atau metode yang sudah ditentukan seperti menurut
Peraturan Pemerintah No 22 tahun 2021, serta menurut metode Scofield (1936), dan FAO
(1976).
Berdasarkan hasil analisis laboratorium, pada semua lokasi penelitian dapat dilihat dari
parameter pH, TSS, BOD, DO, Sulfat, Nitrat, Seng, Timbal, Klorida, DHL, Natrium, dan SAR,
dengan pH berkisar antara 7,95-8,07 mg/L. TSS berkisar antara 15-127,2 mg/L. BOD berkisar
antara 0,58-1,16 mg/L. DO berkisar antara 5,03-7,16 mg/L. Sulfat berkisar antara 18-52,5
mg/L. Nitrat berkisar antara 1,1-9 mg/L. Seng berkisar antara

The role of irrigation facilitates farmers in soil cultivation, serves as a water source for crops, simplifies the use of fertilizers and pesticides, and helps control the development of pests, diseases, and weeds. Irrigation water sources typically consist of surface water and groundwater, including rivers, reservoirs, and lakes. The water used in agricultural activities should meet the standard quality criteria for irrigation water so that it is suitable for rice paddy cultivation. Understanding the quality of irrigation water is crucial for farmers in managing and utilizing irrigation for their rice fields. This is because good water quality will not hinder plant growth and production. Poor water quality can lead to environmental problems. The method used in this research is descriptive, involving surveys and water sampling in the Krueng Aceh irrigation area in Seulimeum District, Aceh Besar Regency. Water samples were taken at 9 sampling points, namely: at the dam (1 water sample), primary channel (2 water samples), secondary channel (2 water samples), tertiary channel (2 water samples), and quaternary channel. (2 sampel air). For the result parameters, the analysis is matched with the references or methods that have been established, such as according to Government Regulation No. 22 of 2021, as well as according to the Scofield method (1936) and FAO. (1976). Based on the results of laboratory analysis, at all research locations, the parameters of pH, TSS, BOD, DO, Sulfate, Nitrate, Zinc, Lead, Chloride, EC, Sodium, and SAR can be observed, with pH ranging from 7.95 to 8.07 mg/L. TSS ranges from 15 to 127.2 mg/L. BOD ranges from 0.58 to 1.16 mg/L. DO ranges from 5.03 to 7.16 mg/L. Sulfate ranges from 18 to 52.5 mg/L. Nitrate ranges from 1.1 to 9 mg/L. Zinc is less than 0.005 mg/L. Lead is less than 0.0003 mg/L. Chloride ranges from 2.06 to 18.57 mg/L. EC ranges from 0.241 to 0.529%. Sodium ranges from 8.64 to 23.01 mg/L. SAR ranges from 2.38 to 6.93 mg/L. Based on the analysis of all channel samples taken according to Government Regulation No. 22 of 2021 and according to the Scofield and FAO methods, the pH at the research locations falls within the acceptable criteria, TSS falls within the acceptable criteria, BOD falls within the acceptable criteria, DO falls within the acceptable criteria, Sulfate falls within the poor criteria, Nitrate falls within the acceptable criteria, Zinc falls within the acceptable criteria, Lead falls within the acceptable criteria, Chloride falls within the good criteria, EC falls within the very good criteria, Sodium falls within the very good criteria, and SAR falls within the good criteria. The water quality in the Krueng Aceh Irrigation Area in Seulimeum District, Aceh Besar Regency, according to Government Regulation No. 22 of 2021, shows that the overall results of the analysis parameters fall into class I category. Additionally, five analysis parameters taken according to the Scofield method (1936) and the FAO method (1976), namely DHL, Sodium, Chloride, Sulfate, and SAR, are categorized as very good and good, although Sulfate falls into the less good category.