Evaluasi Koefisien Tanaman Padi Pada Berbagai Perlakuan Muka Air

Sugiyanta

et al. 2022

AJAS

Self Cite

The System of Rice Intensification (SRI), a water-saving paddy cultivation system, has been implemented in Indonesia. The application of SRI can increase water productivity. The Salibu method applied to paddy cultivation can save seeds, costs, labour and increase the planting index of paddy. However, when used in other areas, the yield is reduced by up to 50 per cent from the first harvest. A combination of cultivation and water management is needed to save water and increase paddy production. The method used in this research is experimental research. The design of the irrigation system was made according to the technical design, then tested for automatic water management. The design was tested with the SRI Salibu method. The data are climate data, water level, water discharge, and water content. The climate data used are temperature and solar radiation to determine potential evapotranspiration. The results of observations of water depth, the volume of water in the system, the water content in the media, water entering the system (rain infiltration, irrigation discharge), and water leaving the system (runoff, discharge) are entered into the water balance equation (water balance). The plant coefficient value is included in the water balance equation as a plant coefficient factor multiplied by the potential evapotranspiration value. Then the plant coefficient value for each observation is optimized by reducing the error value to get the coefficient value for SRI Salibu. The results showed that the appropriate evapotranspiration irrigation system for SRI Salibu paddy cultivation is the fifth irrigation system design. The fifth irrigation system design can produce 4.7 tons/ha of paddy (SRI method) and produce SRI Salibu paddy yields of 8 tons/ha. The irrigation water for SRI paddy cultivation is 1738 litres, and the water production is 1.2 kg/m3.

Section: Methodsmentioning

confidence: 99%

Subsurface Evapotranspiration Irrigation System Design in System of Rice Intensification (SRI) Salibu Paddy Cultivation

Agustina

Sugiyanta

et al. 2022

AJAS

Self Cite

“…Pengaturan muka air di sawah System of Rice Intensification (SRI) dilakukan petani untuk menjaga ketersediaan air di sawah sedemikian hingga tercipta kondisi macak-macak. Pengaturan tersebut merupakan salah satu aktivitas spesifik lokal, sehingga tinggi muka air yang diterapkan umumnya beragam (Hasanah, Setiawan, Arif, & Widodo, 2015). Penerapan muka air tersebut sangat terkait dengan ketersediaan air di lahan.…”

Section: Pendahuluanunclassified

“…Muka air yang diterapkan meliputi -12, -7, -5, -3, 0, dan +2 cm dari permukaan tanah. Pengaturan muka air hanya dilakukan pada 0-40 dan 47-90 hari setelah tanam sesuai dengan metode SRI (Hasanah et al, 2015) Jumlah kebutuhan air (TWU) terlihat dari volume air yang masuk ke pot perlakuan, baik dari irigasi tabung mariot (Q) dan curah hujan (P). Nilai Q (mm) dapat diketahui dengan cara mengukur perubahan ketinggian air di tabung mariot dengan perhitungan berikut (Hasanah et al, 2015):…”

Section: Lokasi Dan Desain Penelitianunclassified

“…Pada saat penelitian berlangsung, akumulasi curah hujan mencapai 795 mm sepanjang musim tanam. Sementara, nilai evapotranspirasi aktual yang terjadi beragam pada berbagai perlakuan muka air beragam dan berkisar 606,4-690,5 mm karena nilai koefisien tanaman yang juga beragam (Hasanah et al, 2015).…”

Section: Kondisi Lingkunganunclassified

“…Ketika nilai evapotranspirasi yang menandakan jumlah konsumsi air meningkat, maka suplai air untuk memenuhi kebutuhan di lahan juga semakin tinggi. Detail mengenai perbedaan nilai ini dijelaskan pada Hasanah et al (2015).…”

Section: Gambar 4 Trend Jumlah Anakan Padi Pada Berbagai Perlakuan Muunclassified

See 2 more Smart Citations

Muka Air Optimum Pada System Of Rice Intensification (SRI)

Hasanah

Arif

et al. 2017

Self Cite

Pengendalian muka air merupakan cara mengelola air di sawah SRI. Petani cenderung mengaplikasikan muka air yang berbeda tergantung pada praktek pengelolaan air setempat. Hal ini dapat berimplikasi pada pertumbuhan tanaman yang dapat terlihat dari jumlah anakan. Pada penelitian ini dilakukan pengamatan pada pembentukan anakan padi SRI di berbagai perlakuan muka air. Muka air dikendalikan menggunakan tabung mariot dengan set-point -12, -7, -5, -3, 0, dan +2 cm dari permukaan tanah. Hasil penelitian menunjukkan nilai kelembaban tanah (Ɵ) berfluktuasi karena adanya penerapan irigasi berselang dan perbedaan muka air. Hal tersebut mempengaruhi jumlah anakan yang terbentuk dimana laju pembentukannya bervariasi antara 0,21-0,29 anakan/hari. Anakan pertama muncul pada 18 hari setelah tanam (HST). Jumlah anakan terus meningkat hingga mencapai nilai maksimal pada 63-72 HST. Studi empirik ini menunjukkan bahwa pengendalian muka air pada -5 cm dari permukaan tanah di budidaya padi SRI merupakan pengelolaan air terbaik dalam produksi anakan dengan produktivitas lahan dan air tertinggi daripada penerapan muka air lainnya. Konsistensi produksi anakan dari awal pembentukan anakan hingga akhir dari musim tanam terlihat pada perlakuan ini.

Economic valuation of SRI paddy

Hasanah

IOP Conf. Ser.: Earth Environ. Sci.

Arif

et al. 2021

From an economic perspective, rice is an important crop. The System of Rice Intensification (SRI) is known as a rice production technology with a high economic value. The economic value varies depending on different implementations of water level in the SRI paddy field. This study was conducted to determine the best water level for SRI paddy cultivation based on its economic value regarding paddy field ecosystem service. In this study, SRI paddy rice was cultivated in experimental pots, and the water levels were regulated at -12, -7, -5, -3, 0 and +2 cm from the soil surface by using Mariotte tubes. The economic value can be calculated using the Total Economic Value (TEV) framework, namely, by considering the amount of irrigation water used, the reduction of greenhouse gas emissions and the yields. The value is then optimized by Excel solver to maximize the balance in economic value as the objective. The water level was set as a changing value with the constraint not less than -12 and not more than +2. This analysis found that the best water level for SRI paddy cultivation is -5.88 cm from the soil surface based on its economic value (49.708 million IDR per hectare).