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Teknik Pertanian Fakultas Teknologi Pertanian Universitas Udayana

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PENGARUH TINGKAT PEMBERIAN KOMPOS TERHADAP KEBUTUHAN AIR TANAMAN BEBERAPA JENIS KACANG Simanjuntak, Frans Azarya; Tika, I Wayan; -, sumiyati -
BETA (Biosistem dan Teknik Pertanian) Vol 1, No 2 (2013): Agustus
Publisher : Universitas Udayana

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Abstract

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh tingkat pemberian dosis  pupuk kompos terhadap kebutuhan air tanaman beberapa jenis kacang yaitu kacang tunggak, kacang kedelai, dan kacang hijau. Perbandingan tanah dan kompos terdiri dari 7 tingkatan yaitu: 100% tanah; 97,5% tanah : 2,5% kompos; 95% tanah : 5% kompos; 92,5% tanah : 7,5% kompos; 90% tanah : 10% kompos; 87,5% tanah : 12,5% kompos; dan 85% tanah :15% kompos. Data dianalisis secara statistik kuantitatif dan di bahas secara deskriptif. Parameter yang diamati dalam penelitian ini adalah kapasitas lapang, titik layu, ketersediaan air tanah, dan kebutuhan air tanaman. Hasil penelitian menunjukkan bahwa perlakuan tingkat pemberian pupuk kompos pada budidaya beberapa jenis kacang berpengaruh terhadap ketersediaan air tanah. Ketersediaan air pada budidaya kacang tunggak berkisar 34,4% - 42,7%, pada budidaya kacang kedelai berkisar 42,3% - 48,6%, pada budidaya kacang hijau 46,7% –55,7%. Kebutuhan air tanaman sangat bervariasi bergantung kepada jenis kacang. Pada penelitian ini diperoleh perbandingan tanah dengan pupuk kompos 85% : 15% merupakan perlakuan terbaik untuk mendapatkan nilai kebutuhan air tanaman yang optimal pada budidaya kacang tunggak, kacang kedelai, maupun kacang hijau.
ANALISIS NERACA AIR IRIGASI UNTUK TANAMAN PADI PADA SUBAK JAKA SEBAGAI SUBAK NATAK TIYIS Handika, I Putu Riadi; -, Sumiyati -; Wijaya, I Made Anom S.
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): Agustus
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

Sumber air sistem irigasi Subak Natak Tiyis berasal dari hulu air drainase subak. Kondisi tersebut menyebabkan neraca air irigasi tidak menentu di Subak Natak Tiyis, sehingga perlu penelitian lebih lanjut untuk menentukan keseimbangan air irigasi yang sesuai dengan ketersediaan dan kebutuhan air irigasi di Subak Natak Tiyis. Tujuan dari penelitian ini adalah untuk menganalisis ketersediaan dan kebutuhan air irigasi Subak Jaka sebagai Subak Natak Tiyis dan menentukan keseimbangan air irigasi di Subak Jaka sebagai Subak Natak Tiyis. Analisis ketersediaan debit dilakukan dengan mengukur debit di inlet Subak Jaka. Kebutuhan air irigasi dianalisis menggunakan perangkat lunak CROPWAT 8.0. Neraca air irigasi diperoleh dengan membandingkan debit air irigasi dengan availabilitis dan kebutuhan air irigasi sehingga didapatkan defisit air irigasi pada Subak Jaka. Analisis ketersediaan debit menunjukkan debit tinggi terjadi pada musim hujan yaitu 115,72 liter / detik dalam setahun. Debit terkecil terjadi pada musim kemarau yaitu 19,01 liter / detik dalam setahun. Kebutuhan air irigasi di MT I dan MT II rata-rata debit yang dibutuhkan berkisar antara 11,0 hingga 98,5 liter / detik selama 15 hari. Hasil neraca air irigasi Subak Jaka terjadi defisit air irigasi tiga periode yaitu 35,2 liter / detik pada periode Juni I yang tertinggi selama 15 hari, 16,8 liter / detik pada periode Juni II dan 30,7 liter / detik pada Januari saya yang tertinggi 15 hari. Water source of Subak Natak Tiyis irrigation system comes from the upstream of subak drainage water. Those condition was causing uncertainly irrigation water balance in Subak Natak Tiyis, thus it requires further research to determine appropriate irrigation water balance according to the availabilitiy and requirement of irrigation water in Subak Natak Tiyis. The purposes of this research were to analyze the availabilities and requirement of irrigation water of Subak Jaka as Subak Natak Tiyis and determine the water balance irrigation in the Subak Jaka as Subak Natak Tiyis. The analysis of discharge availabilities was carried out by measuring discharge at inlet Subak Jaka. Irrigation water requirement was analyzed using CROPWAT 8.0 software. irrigation water balance was obtained by comparing the discharge of irrigation water was availabilitis and irrigation water requirement so get irrigation water deficit on Subak Jaka. The analysis of discharge availabilities showed high discharge occur at rainy season that was 115.72 liter/second within a year. The smallest discharge occurs in dry season that was 19.01 liter/second within a year. Irrigation water requirement in MT I and MT II average required discharge ranged from 11.0 to 98.5 liter/second for 15 days. The result of irrigation water balance the Subak Jaka occurrence irrigation water deficit three period that was 35.2 liter/second on period June I that highest for 15 days, 16.8 liter/second on period June II and 30.7 liter/second on January I that highest for 15 days.
Analisis Profil Suhu pada Greenhouse Tipe ARCH untuk Budidaya Bunga Krisan (Chrysanthemum morifolium) Yuliasih, Ni Putu; -, sumiyati -; Setiyo, yohanes -
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

This research was describe about temperature profile on Arch Greenhouse with the curved shape of roof and square wall for Chrysanthemum (Chrysanthemum morifolium) that cultivated on Arch Greenhouse. The aims of this research were to obtain a temperature profile on arch greenhouse, to determine the building height of arch greenhouse which suit for chrysanthemum cultivation. Height treatments of greenhouse was separated by 3 levels i.e. 2.5 m, 3.0 m, and 3.5 m. Chrysanthemum seeds varietys used in this research was Fiji white. To measure the temperature used temperature and humidity meter. Temperature measurement carried out by 2 times start from a week before planting (empty condition) and plant age was 45 days after planting. Doing the measurement on morning, noon, and afternoon. Analysis data of temperature was done with interpolation to determine profile contour line of analysis temperature. The result showed that there are the different shape and contours distribution profile of microclimate for difference height. The level of growth plan on each treatments showed a better productivity on greenhouse with height 2.5 m when compared with the others. Greenhouse with height 2.5 m produced flower quality which suit as the SNI with average of height plan was 81.93 cm, grooming age was 46 days, amount flower was 5 florets per stem, flower wide was 44.26 cm, and dry weight was 13.11 gram.
Aplikasi Metode SRI (System Rice of Intensification) dan Sistem Tanam Jajar Legowo Terhadap Iklim Mikro yang Mempengaruhi Produktivitas Padi Beras Merah Rusman Pita, Paul Ludgerius; -, Sumiyati -; Nada, I Made
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana

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Abstract

This research was carried out to know the result of the application method system of rice intensification (SRI) which was combined with rice planting system legowo in raw toward micro climate which influence the productivity of red rice. These research was consist of 6 treatments, they were : K0 (the treatment which appropriated to local farmers custom), K1 (SRI method), K2 (SRI method combined with legowo 4:1 inserting), K3 (SRI method combined with legowo 4:1 without inserting), K4 (SRI method combined with legowo 6:1 inserting), and K5 (SRI method with legowo 6:1 without inserting). This treatment study was repeated 3 times. Parameters observed were : relativity of humidity, temperature, intensity of sun shine, the length of stalk, the weight of rice in a clump, percentage pure rice, the weight of 1000 pure rice, the number of young plants in a clump, the number of young plants and each productivity. The outcome of this research shown that the application of SRI method combined with legowo 4:1 without inserting got more intensity of sun shine and the highest temperature, while the application of K0 had the highest relativity weakness. Application SRI method with legowo 6:1 without inserting produced the highest product in average per width of area, there were 7,48 ton/ ha, comparing with other applications.