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Pemberian Mulsa dalam Budidaya Cabai Rawit di Lahan Kering: Dampaknya terhadap Hasil Tanaman dan Aliran Permukaan Nani Heryani; Budi Kartiwa; Yon Sugiarto; Tri Handayani
Indonesian Journal of Agronomy Vol. 41 No. 2 (2013): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (437.894 KB) | DOI: 10.24831/jai.v41i2.7520

Abstract

The problem of plant cultivation in dry upland with slope of >15° is the high soil erosion that result in high rate of sedimentation in the downstream of watershed. One way of overcoming this problem is by utilization of mulches. The objective of the experiment was to study the effect of mulch application on growth and yield of chilli (Capsicum frutescensL.).The experiment was conducted from January 2010 until June 2011 at Selopamioro micro watershed at Imogiri Subdistrict, Bantul District, Special Region of Yogyakarta. The experiment was arranged in a randomized complete block design consisted of four mulch treatments (rice straw, litter, plastic/silver black polyethylene, and without mulch) and four replications. The observed variables were the growth parameter (plant height), soil moisture content, soil temperature, and yield (number and weight of chilli). The result showed that application of mulches did not affect plant height and yield of chilli, but increased number of fruit. The best mulch for chilli crops in upland area was rice straw, that yielded the highest increase in number of fruit. Mulch as a soil conservation practice reduced runoff coefficient, while dicharge and extended of the reponse time were reduced only at rainfall less than 21 mm.Keywords: Capsicum frutescensL.,mulch, runoff, upland area
Efek Kombinasi Sistem Pengaturan Air Irigasi dengan Pemangkasan Daun Bawah Terhadap Efisiensi Air dan Radiasi, Serta Produktivitas Tanaman Jagung pada Lahan Kering Beriklim Kering Yonny Koesmaryono; . Haruna; Budi Kartiwa; . Impron
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.983 KB)

Abstract

Study on the effect of dose management on water irrigation and the effect of pruning corn lower leaves on productivity of Lamuru variety grown on dry land of dry climate area has been done. The experiment was organized at Naibonat Experimental Station, East Kupang Subdistrict, Kupang, East Nusa Tenggara, from June to October 2011. The area used was 72 × 32 m using split plot design methods, employing two treatments. The first treatment was conducted on the main plot with water irrigation dose given 100, 80, and 60% the dose control was according to the farmer’s customary. The second treatment was applied by pruning or not pruning the lower leaves at the generative phase on the determined submain plot. The result showed that dose of water irrigation of 80 and 60% gave significant effect on corn productivity, that is 7.3 and 5.3 ton/ha, but not significant to the control (6.6 ton/ha). On the other hand, the treatment with and without leaf pruning did not give significant effect on the growth component because pruning was conducted during the generative phase. The Anova test result of corn productivity was not significantly different between the treatment of with and without pruning. The treatment of 80% dose of water irrigation could save water until 842 m3 or 20% per planting season per hectare. Meanwhile, the farmer’s customary wasted the water up to 2.105 m3 or 50% per planting season per hectare. Based on the results, the optimizing of water irrigation interval is seven times more efficient in one planting period as compared to 14 irrigation times in one planting period.
Analisis Sumberdaya Air untuk Irigasi Lahan Sawah dalam meningkatkan Akurasi Kalender Tanam Yayan Apriyana; Budi Kartiwa
JURNAL SUMBER DAYA AIR Vol 15, No 1 (2019)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1307.075 KB) | DOI: 10.32679/jsda.v15i1.404

Abstract

Kajian hidrologis yang terintegrasi dengan analisis waktu tanam di daerah irigasi diperlukan untuk mendukung sistem produksi tanaman pangan khususnya padi. Kajian dilakukan melalui (1) Identifikasi Karakteristik distribusi spasial Daerah Irigasi Kewenangan Pusat (2) Analisis distribusi temporal ketersediaan air irigasi pada tingkat Kecamatan berdasarkan sebaran daerah irigasi kewenangan pusat (3) Penentuan waktu tanam terbaik dan menghitung luas panen berdasarkan analisis neraca ketersediaan-kebutuhan air lahan sawah. Hasil penelitian menunjukkan Ketersediaan air di Daerah Irigasi (DI) Way Rarem Lampung dan Daerah Irigasi Colo Jawa Tengah dapat memenuhi pasokan irigasi pada MT I dan MT II bahkan di beberapa wilayah dapat digunakan hingga MT III. Ketersediaan air di DI Way Rarem meningkat pada Oktober minggu pertama (Oktober I) dan mencapai puncaknya pada Januari I selanjutnya mengalami penurunan sampai mencapai ketersediaan air terendah pada Agustus I. Ketersediaan air di DI Colo relatif konstan yang dapat dipenuhi dari pasokan irigasi dan curah hujan, kecuali pada Oktober II -November I karena jadwal rutin perawatan dan perbaikan bangunan dan saluran irigasi. Hasil penetapan waktu tanam tingkat kecamatan pada DI Way Rarem untuk MT I pada Oktober II sampai dengan Februari I, untuk MT II pada Februari II sampai dengan Juni I dan MT III dari Juli I sampai dengan Oktober I. Untuk DI Colo pada MT I pada November minggu ke satu/dua sampai dengan Februari minggu ke tiga/ Maret I, untuk MT II pada Maret minggu ke I/II sampai dengan April I/Juni III dan MT III dari Juli I/II sampai dengan September III
DINAMIKA ELEVASI MUKA AIR PADA LAHAN DAN SALURAN DI LAHAN GAMBUT Eleonora Runtunuwu; Budi Kartiwa; Kharmilasari Kharmilasari; Kurmen Sudarman; Wahyu Tri Nugroho; Anang Firmansyah
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 21, No 2 (2011)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1353.56 KB) | DOI: 10.14203/risetgeotam2011.v21.47

Abstract

ABSTRAK Reklamasi gambut untuk pertanian memerlukan jaringan drainase makro yang dapat mengendalikan tata air dalam satu wilayah dan drainase mikro untuk mengendalikan tata air di tingkat lahan. Elevasi muka air harus dipertahankan secara optimal. Tidak terlalu dalam agar tanaman tidak mengalami kekeringan dan tidak terlalu dangkal agar tanaman tidak tergenang. Untuk itu diperlukan bangunan pengendali berupa pintu air di setiap saluran. Pintu air berfungsi untuk mengatur muka air tanah supaya tidak terlalu dangkal dan tidak terlalu dalam, sehingga kelestarian gambut dapat terjaga. Pemasangan pintu air baik letak maupun jumlahnya perlu diawali dengan mengetahui fluktuasi air di saluran dan lahan. Tulisan ini bertujuan untuk mempelajari dinamika elevasi muka air pada lahan dan saluran dan keterkaitannya dengan curah hujan di lahan gambut. Untuk mencapai tujuan tersebut telah dilakukan penelitian di Desa Jabiren, Kecamatan Jabiren Raya, Kabupaten Pulang Pisau, Provinsi Kalimantan Tengah. Penelitian dilaksanakan sejak April sampai dengan Oktober 2011. Analisis difokuskan untuk memahami karakteristik hujan, karakteristik hidrologi, elevasi muka air lahan dan saluran, hidrotopografi, serta hubungan curah hujan dan elevasi muka air. Data dasar ini sangat dibutuhkan sebagai informasi peringatan dini agar kejadian air berlebihan atau terbatas di lahan gambut dapat diantisipasi dengan baik.
KRITERIA RANCANG BANGUN SISTEM PANEN HUJAN DAN ALIRAN PERMUKAAN: STUDI KASUS DAS CISADANE HULU Nani Heryani; Setyono Hari Adi; Budi Kartiwa
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 23, No 2 (2013)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1853.258 KB) | DOI: 10.14203/risetgeotam2013.v23.76

Abstract

Abstrak Banjir dan kekeringan merupakan dua fenomena alam yang dapat mengancam sistem produksi pertanian dan ketahanan pangan nasional. Secara kuantitatif masalah banjir terjadi akibat kesenjangan dua hal yaitu masalah distribusi dan kapasitas (storage). Distribusi curah hujan yang tidak merata secara spasial dan temporal menyebabkan kelebihan air di musim hujan dan kekurangan air di musim kemarau. Teknik konservasi tanah dan air dapat dilakukan melalui berbagai cara antara lain melalui  pemanenan air hujan dan aliran permukaan menggunakan embung, dam parit, dan lain-lain. Penelitian dilaksanakan di Sub DAS Cisadane Hulu pada Maret sampai dengan Nopember 2011. Tujuan penelitian yaitu: 1) mengkarakterisasi kondisi biofisik wilayah untuk penilaian kesesuaian aplikasi sistem panen hujan dan aliran permukaan 2) mengembangkan model pengelolaan air melalui panen hujan dan aliran permukaan dan mengantisipasi banjir dan kekeringan, 3) mengembangkan kriteria rancang bangun sistem panen hujan dan aliran permukaan untuk mengurangi risiko banjir dan kekeringan.. Hasil penelitian menunjukkan bahwa dam parit  dapat dibangun di sub DAS Cikereteg, DAS Cisadane sebanyak 41 buah dapat mengairi target irigasi seluas 50,4 ha. Sedangkan di seluruh DAS Cisadane jika dibangun sebanyak 159 buah akan dapat menurunkan debit puncak sebesar 4,5 m3/detik.  Pembangunan dam parit di sub DAS Cikereteg DAS Cisadane Hulu tergolong sesuai secara teknis maupun sosial ekonomi.
Variasi temporal dan spasialtinggi muka air tanah gambut lokasi demplot ICCTF jabiren kalimantan tengah Hendri Sosiawan; Budi Kartiwa; Wahyu Tri Nugroho; Haris Syahbuddin
Jurnal Ilmu Tanah dan Air Vol 14, No 2 (2017)
Publisher : Universitas Pembangunan Nasional Veteran Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jta.v14i2.2572

Abstract

As the swamp ecosystem, the presence of water in the peat is strongly influenced by the characteristic of rain and river tide. Thus the role of rivers and canals in cultivated peatlands is especially important to maintain the optimal water level fluctuations for crops. Demplot ICCTF in Jabiren, Pulang Pisau District, Central Kalimantan peat land was cultivated for rubber plant community,located beetwen the river Jabiren (secondary canal) and tertiary canal. The objective is to determine the peatland water level fluctuations both temporally and spatially. To achieve this objective, these activities have been implemented i.e: topographic survey, installation of piezometer and staff gauge, and water level observation. Topographic survey has been carried out to map land elevation, position and elevation of water level observation device and water infrastucture. Observation of the spatial dynamics of ground water level was done manually, and the temporal dynamic of water level in canal inlet and outlet observed automatically using loggers. Results shows that the groundwater level fluctuations have a simillar tendency with water level of the river and tertiary canal. Spatial variation of groundwater level elevation shows that the highest groundwater level was the farthermost of piezometer from the canal or river. Hydrotopograpy land shows that the pattern of ground water level pattern like a dome. This indicates that the peatland of Jabiren ICCTF research demonstration plot that began to be cultivated for rubber plant in 2006 has not experienced subsidence significantly. Result indicates also that temporal fluctuation of ground water level was strongly influenced by pattern fluctuation of water level ofsecondary canal inlet but it was not influenced by secondary canal outlet. The tertiary canals flapegates must be funtioned well in order to maintain the optimal depth of groundwater as water level does not fluctuate. The secondary channel as serves as a transport services must be temporary installed by flapegate at downstream so that the duration of the water level in the channel will last longer and ultimately affect positive on the water level in the cultivated land.
Predicting Discharge from Agricultural Catchment to Support Land and Water Management in Singkarak Basin, West Sumatra KASDI SUBAGYONO; BUDI KARTIWA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 29 (2009): Juli 2009
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n29.2009.%p

Abstract

Limited hydrological data in Paninggahan sub catchment in Singkarak basin has resulted in inappropriate land management practices for farming system development. Predicting stream flow using an appropriate hydrological model is critical for a catchment with limited data recording. The present study has been conducted from January 2006 to December 2007. The objective of this study is to characterize hydrological condition of the catchment and to predict river flow for supporting design of landand water management options. To some extend, the study is to provide inputs in negotiation of farmers community with other stakeholders in the Singkarak basin. An automatic water level recorder (AWLR) and an automatic weather station (AWS) have been installed in the catchment to record hydro-meteorological data in order to calibrate hydrological model for predicting river flow. An instantaneous discharge model based on Geomorphological Instantaneous Unit Hydrograph (H2U) and a daily discharge model of GR4J were used to predict the river flow. The instanteneous hydrological data suggested that stream discharge sharply increased during onset rain and implying that the draining water was dominated by rapid flow. After peak storm has been reached, the water was slowly released to the river the one is typical hydrological process for disturbed catchments where rainfall water may no longer be retained in thecatchment. Application of both hydrological models in Paninggahan sub catchment during a period of March to April 2006 has given an appropriate result. The GR4J model has been calibrated and has given the value of similarity coefficient of 87.9%, while calibration of H2U model applied for storm event and has given the value of similarity coefficient of 96%. Thesucceed of predicting discharge using both models is valuable to support planning program in land and water management for farming system development in the Singkarak basin.
Hydrological Model of Upstream Aih Tripe Watershed for Drought and Flood Prediction . NASRULLAH; BUDI KARTIWA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 29 (2009): Juli 2009
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n29.2009.%p

Abstract

The objectives of this research is to analyze biophysic caharacteristics of Upstream Aih Tripe Watershed and to predict discharge characteristic of Aih Tripe River based on hydrological models application. Modified H2U model is applied to predict instantaneous discharge, meanwhile GR4J model is applied to predict daily discharge. Upstream Aih Tripe characteristics are,1,115.2 km2 wide, stretch watershed type (Gravelius index 4.31), equivalent length (L) 252.40 and equivalent width (l) 4.42, parallel drainage pattern, maximum river order is 5 and drainage dencity 1.37 m m-2, global slope index (Ig) 2.0 and specific high different (Hg) 0.06. Instantaneous discharge simulation results at dry season are: instantaneous maximum discharge is 364.8 m3 s-1 and time to peak 4 hours, rainfall maximum intensity is 29 mm hour-1, rainfall is 45.9 mm with duration 5 hours. In rainy season, maximum discharge is 605.2 m3 s-1 and time to peak 2 hours, rainfall maximum intensity is 40.8 mm hour-1, rainfall is 73.2 mm with duration 7 hours. Maximum discharge during El Nino condition is 131.4 m3 s-1 (30 September) and minimum dischargeis 8.2 m3 s-1 (31 March). Discharge simulation during La Nina, maximum discharge is 328.3 m3 s-1 (11 December) and minimum discharge is 8.5 m3 s-1 (5 October).
Alternative Method for Calculating Runoff Coefficient Based on Discharge Simulation Model by Applying Unit Hydrograph Concept (Kali Kripik Sub Watershed Case Study) BUDI KARTIWA; GATOT IRIANTO
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 19 (2001): Desember 2001
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n19.2001.%p

Abstract

Comparison of two method on calculating runoff coefficient (Cr), is discussed in this paper i.e. classical method and alternative method. The first one calculates Cr based on the hydrograph separation analyses, and the second one based on the discharge model simulation by applying unit hydrograph concept. The classical Cr values is calculated using simple method and the alternative Cr values is calculated using H2U (Hydrogramme Unitaire Universel) transfer rainfall-discharge model, for 47 rainfall and discharge events from September 1998 to March 1999 on Kripik sub Watershed. The H2U model calculates discharge based on convolution product between excess rainfall and hydrological network density that was represented by probability density function. The Cr value according to this model is determined when the Cr is resulting the best discharge simulation. During the period of September 1998 to March 1999, the classical Cr value varied between 2,8 to 69,1%, while alternative Cr between 1,0 to 48,8%. The smallest and the biggest differences between classical and alternative Cr values were 0,3% and 26,5%, respectively. According to regression analyses and Nash-Sutcliffe criterion, the coefficient of determination (R2) and the coefficient of efficiency (F) were 0,9312 and 0,6829, respectively. Statistically, these values indicate that the alternative Cr value was similar to classical one.
Perbandingan Pengukuran Salinitas Air antara Metode Daya Hantar Listrik dan Massa Jenis untuk Aplikasinya pada Bidang Pertanian. Jalu Ahmada Prakosa; Bernadus H. Sirenden; Dadang Rustandi; Budi Kartiwa; Sensus Wijornako; Tatik Maftukhah; Purwowibowo Purwowibowo
Instrumentasi Vol 44, No 2 (2020)
Publisher : LIPI Press, Anggota IKAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/instrumentasi.v44i2.221

Abstract

Pengukuran tingkat keasinan (salinitas) air banyak digunakan untuk aplikasi pertanian khususnya di daerah pesisir. Akurasi pengukuran salinitas air sangat penting selain pertimbangan biaya dan kemudahannya karena setiap tanaman pangan memiliki toleransi salinitas yang berbeda. Bahkan pengukuran salinitas sangat berguna dalm bidang pertanian dalam penelitian toleransi tanaman pangan tersebut terkait pemanfaatan potensi lahan salin. Metode pengukuran berbasis daya hantar listrik dan massa jenis akan diinvestigasi perbandingan nilai kesalahan dan ketidakpastian pengukurannya karena alat ukur yang menggunakan keduanya masih banyak digunakan di pasaran. Sampel alat ukur yang menerapkan metode daya hantar dan massa jenis di pasaran dapat digunakan dalam penelitian ini. Natrium klorida digunakan sebagai nilai referensi dengan teknik gravimetrik sesuai definisi salinitas air. Tujuan penelitian ini adalah membandingkan pengukuran salinitas air antara daya hantar listrik dan massa jenis secara kuantitatif dengan sampel alat ukur yang beredar di pasaran untuk aplikasi pada bidang pertanian. Dari hasil eksperimen, didapatkan metode daya hantar listrik memiliki kesalahan lebih baik 3 kalinya, namun untuk salinitas rendah di bawah 15 PPT cenderung terjadi kesalahan acak dan ketidaklinearan. Akurasi sekitar 5% bahkan 3% untuk hidrometer salinitas dapat dicapai dengan kalibrasi dan penyetelan alat untuk memenuhi kebutuhan pengukuran salinitas pada bidang pertanian.