Geovandi, Muhammad Sonydio and Prof. Dr. Ir. Didik Hariyono, MS. (2022) Studi Intensitas Curah Hujan dan Hari Hujan Terhadap Produktivitas Tanaman Ubi Jalar (Ipomoea batatas L.). Sarjana thesis, Universitas Brawijaya.
Abstract
Ubi jalar merupakan komoditas pangan yang penting bagi kehidupan manusia khususnya masyarakat Indonesia. Ubi jalar merupakan tanaman pangan yang berpotensi sebagai pengganti beras karena efisien dalam menghasilkan energi. Produksi tanaman ubi jalar di Kabupaten Malang mengalami penurunan setiap tahunnya dari 2018 hingga 2021 sebesar 10.694 ton. Peningkatan intensitas curah hujan dan hari hujan di Kabupaten Malang diduga dapat mempengaruhi penurunan produktivitas tanaman ubi jalar. Intensitas curah hujan dan hari hujan merupakan unsur iklim yang penting di dalam produksi tanaman ubi jalar, sehingga perlu dilakukan pengkajian antara intensitas curah hujan dan hari hujan terhadap produktivitas tanaman ubi jalar. Tujuan dari penelitian ini untuk mengetahui pengaruh intensitas curah hujan dan hari hujan terhadap produktivitas tanaman ubi jalar di Kabupaten Malang. Penelitian ini dilaksanakan pada bulan Juni-Agustus 2022 dengan metode survei di Kabupaten Malang, yang dilaksanakan di tiga tempat yaitu Kecamatan Pakis, Kecamatan Jabung dan Kecamatan Ngajum. Pemilihan lokasi tersebut dikarenakan Kecamatan Pakis, Jabung dan Ngajum merupakan sentra produksi ubi jalar terbesar di Kabupaten Malang. Metode penelitian yang dilakukan adalah dengan cara purposive sampling. Pengambilan sampel dilakukan dengan menggunakan data primer dan data sekunder. Data primer didapatkan dengan melakukan wawancara petani pada tanaman ubi jalar sebanyak 60 petani. Data sekunder didapatkan dari Badan Pusat Statistik dan Dinas Pekerjaan Umum Sumber Daya Air meliputi data iklim seperti intensitas curah hujan, hari hujan, bulan basah dan bulan kering serta data produktivitas ubi jalar di Kecamatan Pakis, Jabung dan Ngajum selama 11 tahun dari 2011-2021. Analisis data dilakukan dengan uji korelasi antara intensitas curah hujan, hari hujan, bulan basah, dan bulan kering terhadap produktivitas tanaman ubi jalar di Kabupaten Malang dan apabila ada hubungan maka dilanjutkan dengan uji regresi linear berganda. Berdasarkan hasil penelitian menunjukkan bahwa dari tiga lokasi sentra produksi ubi jalar (Pakis, Jabung dan Ngajum) terdapat korelasi positif dan negatif antara unsur iklim (intensitas curah hujan, hari hujan, bulan basah dan bulan kering) terhadap produktivitas ubi jalar. Hari hujan dan bulan basah berkorelasi positif sedangkan intensitas curah hujan berkorelasi negatif, bulan kering tidak berkorelasi di Kecamatan Ngajum sedangkan dua kecamatan yang lain tidak berkorelasi terhadap intensitas curah hujan, hari hujan, bulan basah dan bulan kering terhadap produktivitas tanaman ubi jalar. Hasil uji regresi didapatkan yaitu unsur iklim yang paling mempengaruhi produktivitas ubi jalar di Kecamatan Ngajum adalah bulan basah berdasarkan uji regresi linear berganda (Y = 15,984 - 0,025X1 + 0,210X2 +5,569X3).
English Abstract
Sweet potato is a food commodity that is important for human life, especially the people of Indonesia. Sweet potato is a food crop that has the potential to replace rice because it is efficient in producing energy. Sweet potato production in Malang District has decreased every year from 2018 to 2021 by 10,694 tons. Increasing the intensity of rainfall and rainy days in Malang District is thought to affect the decrease in the productivity of sweet potato plants. Rainfall intensity and rainy days are important climatic elements in sweet potato production, so it is necessary to study the relationship between rainfall intensity and rainy days on sweet potato productivity. The purpose of this study was to determine the effect of rainfall intensity and rainy days on the productivity of sweet potato plants in Malang District. This research was conducted in June-August 2022 using a survey method in Malang District, which was carried out in three places, namely Pakis Sub- District, Jabung Sub-District and Ngajum Sub-District. The location was chosen because the Sub-Districts of Pakis, Jabung and Ngajum are the largest sweet potato production centers in Malang District. The research method used was purposive sampling. Sampling was carried out using primary data and secondary data. Primary data was obtained by interviewing 60 farmers on sweet potato crops. Secondary data was obtained from the Central Statistics Agency and the Water Resources Public Works Office including climate data such as rainfall intensity, rainy days, wet and dry months as well as sweet potato productivity data in Pakis, Jabung and Ngajum Sub-Districts for 11 years from 2011-2021. Data analysis was carried out with a correlation test between rainfall intensity, rainy days, wet months, and dry months on the productivity of sweet potato plants in Malang District and if there is a relationship then it is continued with multiple linear regression tests.. Based on the results of the study, it was shown that from the three locations of sweet potato production centers (Pakis, Jabung and Ngajum) there were positive and negative correlations between climate elements (rainfall intensity, rainy days, wet months and dry months) on sweet potato productivity. Rainy days and wet months are positively correlated while rainfall intensity is negatively correlated, dry months are not correlated in Ngajum Sub-District while the other two Sub-Districts are not correlated with rainfall intensity, rainy days, wet months and dry months on sweet potato crop productivity. The results of the regression test showed that the climate element that most influenced the productivity of sweet potatoes in Ngajum District was the wet month based on multiple linear regression tests (Y = 15.984 - 0.025X1 + 0.210X2 + 5.569X3).
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0522040602 |
| Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture > 338.16 Production efficiency |
| Divisions: | Fakultas Pertanian > Agroekoteknologi |
| Depositing User: | PKN 01 UB |
| Date Deposited: | 08 Jun 2023 08:33 |
| Last Modified: | 08 Jun 2023 08:33 |
| URI: | http://repository.ub.ac.id/id/eprint/201236 |
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Text (DALAM MASA EMBARGO)
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