Growth and yield of several rice varieties in swampland agroecosystems in Mesuji Regency, Lampung Province

Swampland agroecosystem is a potential area for rice extensification program in order to increase food production. This study aimed to examine the growth and yield of several rice varieties planted in swampland agroecosystems in Mesuji Regency, Lampung Province. The experiment was conducted from November 2020 until March 2021. The planting location was in Tanjung Mas Jaya Village, Mesuji Timur District, Mesuji Regency, Lampung Province. The rice varieties planted were IAARD’s Superior varieties (Cilamaya Muncul, Inpara-2, Inpara-8, and Inpari IR Nutrizinc), multinational varieties (Mapan and Supadi) and existing local variety (Kebo). The observed variables were components of the growth and production of rice plants. The data were analyzed using Duncan test. The results showed that the yield was significantly different between the rice varieties planted. The lowest rice yield was obtained from the Inpara-2 variety (7.573 ton ha-1 of HDG). The highest yield of rice was in the Kebo variety (10.400 ton ha-1 of HDG). In order to gain optimal rice production in an area, it is necessary to use superior varieties of rice that have been adaptive to the local area.

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The use of superior varieties to increase rice yields in lowland irrigated of Southeast Sulawesi

E3S Web of Conferences ◽

10.1051/e3sconf/202130601045 ◽

2021 ◽

Vol 306 ◽

pp. 01045

Author(s):

Muhammad Alwi Mustaha ◽

Cipto Nugroho ◽

Samrin ◽

Dian Rahmawati

Keyword(s):

Rice Yield ◽

Growth Yield ◽

Rice Production ◽

Growth And Yield ◽

Disease Dynamics ◽

Rice Varieties ◽

Rice Yields ◽

High Yielding Varieties ◽

Planting Season ◽

Experimental Garden

In order to increase national rice production, the Ministry of Agriculture has released some high yielding varieties. The research was aimed to obtain superior rice varieties adapted to irrigated lowland agro-ecosystems of Southeast Sulawesi. In the first planting season, research was carried out in Olo-oloho Village, Uepai sub district and the second season at the Wawotobi Experimental Garden. Eight varieties were tested, i.e. Inpari 31, Inpari 34, Inpari 35, Inpari 38, Inpari 39, Inpari 41, Inpari 42, Inpari 43 and Mekongga. The variables observed were growth, yield and pest and disease dynamics. The results shows that there was variation growth and yield of the tested varieties. The growth and yield also varied depend on the season. In the first planting season, Inpari 34 and Inpari 43 showed better growth than others, but Inpari 31 resulted the highest rice yield (4.83 t/ha). In the second planting season, only Inpari 34 showed consistent growth, but the variety that had showed the highest yield was Inpari 43 (8.13 t/ha).

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Integrating Statistical and System Dynamics Modelling to Analyse the Impacts of Climate Change on Rice Production in West Nusa Tenggara, Indonesia

10.26686/wgtn.17060483.v1 ◽

2021 ◽

Author(s):

◽

Muhamad Bahri

Keyword(s):

Climate Change ◽

System Dynamics ◽

Statistical Models ◽

Rice Yield ◽

Rice Production ◽

Maximum Temperature ◽

Dynamics Model ◽

Rice Varieties ◽

Changing Climate ◽

Impacts Of Climate Change

Climate change, manifested as temperature rise and rainfall change, will pose significant challenges to rice farmers, leading to a possible rice shortage under a changing climate. This research aims to understand the impacts of climate variability and change on rice production through the rest of this century using Representative Concentration Pathway (RCP) scenarios, and combination of statistical and system dynamic modelling. The area of study is West Nusa Tenggara, Indonesia. Wetland and dryland farming types are assessed separately because they have different rice varieties and different agricultural practices. Overall, the research seeks to answer the question: How will climate change and climate variability affect rice production? Additional questions investigated are (1) What are the most significant supply uncertainties associated with a changing climate? and (2) What are possible solutions for reducing the impacts of climate change on rice production?. To answer these research questions, this study deals with three main research areas. First, based on observed data (1976-2011), this study developed regression-based statistical models in understanding the impacts of climate change on rice yield in West Nusa Tenggara. Statistical models find that the negative impacts of increased minimum temperature on rice yield are statistically significant. By contrast, the effects of maximum temperature on rice yield are not statistically significant. A key reason for this is that the highest maximum temperature (32⁰C) in the observed period (1976-2011) was lower than 35⁰C, a rice threshold for maximum temperature. By 2090 (2077-2100), rice yield in wetland and dryland is projected to decrease by about 3% (RCP2.6 scenario), 4% (RCP4.5 scenario), 5% (RCP6.0 scenario) and 14% (RCP8.5 scenario). Second, a system dynamics model was developed to assess the impacts of climate change on three issues including rice yield, harvested areas and rice production by 2090 (2077-2100). After embedding statistical models and estimating the impacts of maximum temperature on rice yield based on existing studies, the impacts of climate change on rice yield are projected. The system dynamics model is also equipped by August SOI to estimate the impacts of climate change on the timing of monsoon onset i.e the beginning of planting seasons. For assessing harvested areas under a changing climate, the system dynamics model is equipped by a mathematical relationship between seasonal rainfall and harvested areas. Because the system dynamics model includes the impacts of high maximum temperature, the projected loss of rice yield in wetland and dryland is relatively higher compared to that in statistical models. It is projected that rice yield loss will be about 3% (RCP2.6 scenario), 6% (RCP4.5 scenario), 10% (RCP6.0 scenario) and 23% (RCP8.5 scenario) by 2090 (2077-2100). Likewise, rice production loss in wetland and dryland is projected to be about 1% (RCP2.6 scenario), 2% (RCP4.5 scenario), 7% (RCP6.0 scenario) and 19% (RCP8.5 scenario) by 2090 (2077-2100). The projected loss of rice production is relatively lower than rice yield loss as wetland harvested areas are projected to experience a slight increase about 3% by 2090 (2077-2100) under a changing climate. This also means that the ranking of the impacts of climate change from the most significant to the least significant is its impact on rice yield, rice production and harvested areas. Third, policy options in overcoming the impacts of climate change on rice production are assessed. This study suggests that research on finding rice varieties with three main traits: heat tolerance, short growth duration and high yield is key to balance rice demand and rice supply in West Nusa Tenggara by 2090 (2077-2100). A failure to improve rice yield in such ways is likely to lead to significant reductions in rice supply in the face of climate change. This study makes theoretical contributions, including the development of statistical models for understanding the impacts of climate change on rice yield and a causal system for investigating the impacts of climate change on rice yield, rice production and harvested areas. Again, the combination of statistical and system dynamics modelling simultaneously investigates the impacts of climate change on rice yield, rice production and harvested areas. This means that this study provides a more holistic view of the impacts of climate change compared to existing studies. This study also offers practical contributions, advising that declining rice research should be avoided under a changing climate, and suggesting that farming intensification (more climate-resilient rice varieties) is more effective than farming extension (area expansion) in sustaining rice production under a changing climate. Again, research on developing more resilient-climate rice varieties is possible as projected rice yield in sustaining rice production by 2090 (2077-2100) is similar to rice’s yield potential.

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Advanced Breeding Strategies and Future Perspectives of Salinity Tolerance in Rice

Agronomy ◽

10.3390/agronomy11081631 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1631

Author(s):

Md Azadul Haque ◽

Mohd Y. Rafii ◽

Martini Mohammad Yusoff ◽

Nusaibah Syd Ali ◽

Oladosu Yusuff ◽

...

Keyword(s):

Genome Editing ◽

Salinity Stress ◽

Salinity Tolerance ◽

High Salinity ◽

Abiotic Factors ◽

Rice Production ◽

Salt Tolerant ◽

Rice Varieties ◽

Rice Plants ◽

Breeding Techniques

Rice, generally classified as a typical glycophyte, often faces abiotic stresses such as excessive drought, high salinity, prolonged submergence, cold, and temperature, which significantly affects growth, development, and ultimately, grain yield. Among these negative impacts of abiotic factors in rice production, salinity stress is a major constraint, followed by drought. There is considerable research on the use of marker-assisted selection (MAS), genome editing techniques, and transgenic studies that have profoundly improved the present-day rice breeders’ toolboxes for developing salt-tolerant varieties. Salinity stresses significantly affect rice plants during seedling and reproductive stages. Hence, greater understanding and manipulation of genetic architecture in developing salt-tolerant rice varieties will significantly impact sustainable rice production. Rice plants’ susceptibility or tolerance to high salinity has been reported to be the result of coordinated actions of multiple stress-responsive quantitative trait loci (QTLs)/genes. This paper reviews recent literature, updating the effects of salinity stress on rice plants and germplasm collections and screening for salinity tolerance by different breeding techniques. Mapping and identification of QTLs salt tolerance genes are illuminated. The present review updates recent breeding for improvement in rice tolerance to salinity stress and how state-of-the-art tools such as MAS or genetic engineering and genome editing techniques, including mutagenesis and conventional breeding techniques, can assist in transferring salt-tolerant QTLs genes into elite rice genotypes, accelerating breeding of salt-resistant rice cultivars.

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Coupled Irrigation–Drainage Management Practice for HYV Rice Cultivation with Saline-Irrigation Water: Evidence from Lysimeter Experiment

Agricultural Science ◽

10.30560/as.v2n1p95 ◽

2020 ◽

Vol 2 (1) ◽

pp. p95

Author(s):

Mohammad Ashiqur Rahman ◽

Tanvir Ahmed ◽

Mohammad Abdul Mojid

Keyword(s):

Irrigation Water ◽

Saline Water ◽

Management Practice ◽

Rice Production ◽

Growth And Yield ◽

Rice Varieties ◽

Saline Irrigation ◽

Yield Attributes ◽

Irrigation Drainage ◽

Main Factor

Irrigation with saline water adversely affects rice production and degrades land productivity in the coastal zones of many countries in the world. This study aimed at developing a suitable irrigation management practice to reduce the harmful effects of salinity on rice production under saline water irrigation. An experiment in raise-bed lysimeters was set in a split-split-plot design with irrigation–drainage practice as the main factor, irrigation water salinity as the sub-factor and rice variety as sub-sub factor; main factor and sub-factor comprised four treatments and the sub-sub factor comprised three treatments, each with three replications. The treatments of the main factor were – T1: 2-5 cm continuous ponding, T2: continuous saturation, T3: changing irrigation water after 3 days of application by maintaining 2-5 cm ponding depth, and T4: changing irrigation water after 5 days of application by maintaining 2-5 cm ponding depth. The sub-factor comprised – SL1: fresh water as control, SL2: saline water of 6 dS m-1, SL3: saline water of 9 dS m-1, and SL4: saline water of 12 dS m-1. The sub-sub factor comprised three salt-tolerant rice varieties V1: Binadhan-8, V2: Binadhan-10, and V3: BRRI dhan-47. The irrigation–drainage practices T2 and T3 provided significantly (p£0.05) improved growth and yield attributes of the rice varieties under salinity water level SL3 and SL4 compared to T1 and T4 treatments. The treatment T3 maintained least exposure of the crop to high degree of salinity and produced satisfactory plant attributes by inhibiting the detrimental effects of salinity. Therefore, T3 is suggested for adoption in practical fields when provision for removing high saline water from the rice fields can be arranged.

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APPLICATION OF TRAP BARRIER SYSTEM COMBINED WITH CAGE TRAP FOR CONTROLLING RATS IN RICE FIELD

BIOVALENTIA Biological Research Journal ◽

10.24233/biov.5.1.2019.128 ◽

2019 ◽

Vol 5 (1) ◽

Author(s):

Hastin Wulan Sekarweni ◽

Yulia Pujiastuti ◽

Siti Herlinda

Keyword(s):

Rice Plant ◽

Rice Field ◽

Rice Yield ◽

Research Area ◽

Yield Reduction ◽

Rice Varieties ◽

Rice Plants ◽

Number Of Males

Rice-field rat is a main pest of rice. Yield reduction caused by rat is quite high, because rats attack rice plant at all stages. One of the efforts applied to control rats is by using Trap Barrier System combined with cage trap. The objective of this research was to identify species of rat attacking rice plants and investigate the presence of rat by their footprints. The experiment was conducted in Jalur 6 Village Sumber Mulya, Sub-district Muara Telang, District Banyuasin, South Sumatra. One hectare of farmer’s rice field, divided into 3 sub-plot. Each sub-plot was planted with variety paddy of Inpari 22 (sub-plot A), Inpari 33 (sub-plot B), and Inpari 43 (sub-plot C). The number of cage traps was 6 traps per sub-plot. Observations were made 7 times, with an interval of 10 days. Results showed species of trapped rats in the research area was Rattus argentiventer, in which number of males was higher than females. Morphologically, the size of males were bigger than female. Number of footprints did not reperesentative the number of trapped rats. Inpari 43 variety was more preferred by rats because damage intensity was the highest than other two rice varieties.

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Respon Varietas Padi Berpotensi Hasil Tinggi terhadap Pemupukan Nitrogen pada Inceptisols Bertekstur Ringan dan Berat

Jurnal Tanah dan Iklim ◽

10.21082/jti.v44n1.2020.37-49 ◽

2020 ◽

Vol 44 (1) ◽

pp. 37

Author(s):

Diah Setyorini ◽

Ladiyani Retno Widowati ◽

Antonius Kasno

Keyword(s):

Soil Texture ◽

Rice Yield ◽

N Fertilization ◽

Growth And Yield ◽

Rice Varieties ◽

Heavy Soil ◽

Hybrid Variety ◽

Main Plot ◽

N Dose ◽

Plot Design

AbstraK. Nitrogen adalah salah satu unsur hara makro esensial yang dibutuhkan untuk meningkatkan hasil tanaman padi sawah. Tanpa pemupukan N hasil padi sangat rendah dan relatif sama dengan hasil padi yang tidak dipupuk sama sekali. Penelitian bertujuan untuk menentukan dosis rekomendasi pupuk N untuk padi berpotensi hasil tinggi varietas Inpari 4, Mekongga dan hibrida H6444. Penelitian telah dilaksanakan di Inceptisols Plemahan yang bertekstur berat dan Inceptisols Gurah yang bertekstur ringan, di Kabupaten Kediri, Provinsi Jawa Timur. Penelitian menggunakan rancangan petak terpisah dengan tiga varietas padi sebagai petak utama dan dosis pupuk N sebagai anak petak, pada Musim Kemarau (MK) 2012. Hasil penelitian menunjukkan bahwa pertumbuhan dan hasil gabah padi hibrida H6444 lebih tinggi sekitar 14-21% dibandingkan Inpari 4 dan Mekongga. Semakin tinggi dosis N, pertumbuhan dan hasil gabah semakin meningkat. Interaksi antara perlakuan varietas dan dosis N hanya terjadi pada parameter hasil gabah. Dosis maksimum pupuk Urea untuk padi sawah pada tanah bertekstur ringan di desa Gurah berturut-turut adalah 680 dan 715 kg ha-1 untuk Inpari 4 dan Mekongga serta 450 kg ha-1 untuk H6444. Pada tanah bertekstur berat di Plemahan adalah 580 dan 560 kg ha-1 berturut-turut untuk Inpari 4 dan Mekongga dan 350 kg ha-1 untuk H6444. Abstract. Nitrogen is one of macro essential nutrients needed to increase rice yield. In the absence of N fertilization, the rice yield is very low and similar to the rice yield with no fertilization. The objective of the study was to determine recommended dose of N fertilizer for high yielding rice varieties of Inpari 4, Mekongga and H6444 hybrid varieties. Research has been carried out in Inceptisols Plemahan Village with heavy soil texture and Inceptisols in Gurah Village, in Kediri District, East Java Province with light soil texture. The study used a split plot design consisted of three rice varieties as the main plot and six levels of N dose as subplots, in the dry season of 2012. The results showed that the growth and yield of H6444 hybrid variety were 14-21% higher than Inpari 4 and Mekongga. The higher the N dose, the higher were the rice growth and yield. The interaction between varieties and N level was observed in grain yields. The maximum doses of Urea fertilizer for lowland rice in light textured soils in Gurah were 680 and 715 kg ha-1 for Inpari 4 and Mekongga, respectively, and 450 kg ha-1 for H6444. For heavy textured soils in Plemahan is 580 and 560 kg ha-1 for Inpari 4 and Mekongga, respectively, and 350 kg ha-1 for H6444.

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Assessment of the CERES-Rice model for rice production in the Central Plain of Thailand

The Journal of Agricultural Science ◽

10.1017/s0021859601001319 ◽

2001 ◽

Vol 137 (3) ◽

pp. 289-298 ◽

Cited By ~ 17

Author(s):

S. CHEYGLINTED ◽

S. L. RANAMUKHAARACHCHI ◽

G. SINGH

Keyword(s):

Rice Production ◽

Growth And Yield ◽

Potential Yield ◽

Rice Varieties ◽

N Application ◽

Acid Sulphate ◽

Central Plain ◽

Acid Sulphate Soils ◽

Significant Difference ◽

Institute Of Technology

CERES-Rice model was used to simulate growth and yield of four common rice varieties in Thailand with the attention on rate and timing of N application, a factor that most limits crop yield. The model predicted slightly higher grain yield than that observed for all varieties at N input of 75 kg/ha, but the differences between observed and simulated yields were not significant, except for varieties HSP and SPR90. The simulated grain[ratio ]straw ratio was significantly higher than the observed value for all varieties except that of HSP. There was no significant difference between the simulated and observed values of days to flowering. Generally, the model reasonably predicted the phenology and yields of RD23 and KDML105 varieties. The model was also used to compare the yields of KDML105 variety as influenced by rate and timing of N application grown in acid sulphate soils. There was a variation in predicted biomass yield with applied N rates at 0 and 150 kg/ha, but timing of application had no effect. In Aeric Endoquept and Sulfic Tropaquept soils at Suphan Buri and Pathum Thani rice research stations, the yield patterns remained unchanged and showed a positive response to N rate up to 75 kg/ha. The model estimated higher grain yields beyond 75 kg N/ha while the observed yield decreased. Based on the simulated yields for a 10-year period at the Asian Institute of Technology (AIT), Pathum Thani, Suphan Buri, Nakhon Pathom and Ratcha Buri rice research stations the varieties were ranked as: SPR90 > RD23 = HSP > KDML105. The model suggested that SPR90 is the most suitable variety for the central plain and its potential yield ranges from 4030 to 5600 kg/ha. Pathum Thani province, with acid sulphate soils, had the lowest potential for rice production.

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Growth and yield of rice fields with posbidik compost and jajar legowo planting system

CELEBES Agricultural ◽

10.52045/jca.v2i1.177 ◽

2021 ◽

Vol 2 (1) ◽

pp. 1-9

Author(s):

I Ketut Suweta ◽

Hertasning Yatim ◽

Mihwan Sataral

Keyword(s):

Plant Height ◽

Block Design ◽

Plant Population ◽

Rice Production ◽

Lowland Rice ◽

Growth And Yield ◽

Innovative Product ◽

Rice Varieties ◽

Randomized Block Design ◽

Planting System

Posbidik compost is an innovative product that is expected to solve the scarcity of subsidized fertilizers for farmers. The principle of the jajar legowo planting system is to increase plant population and lowland rice production. This study aimed to determine the influence of posbidik compost and jajar legowo planting system on the growth and yield of Ciherang rice varieties. This study was conducted on irrigation paddy fields owned by farmers in West Toili District, Banggai Regency, in August-December 2020. This study used a factorial randomized block design consisting of 2 factors, namely posbidik compost consisting of 3 levels, namely: K1 = 5 tons/ha; K2 = 7.5 tons/ha; K3 = 10 tons / ha, and planting system legowo 2:1 line consisting of 3 levels, namely: L1 = 20 x 10 x 40 cm; L2 = 25 x 12.5 x 50 cm; L3 = 30 x 15 x 60 cm. The results showed that the interaction of posbidik compost and jajar legowo planting system does not affect the plant height; however, it affects the number of productive tillers, the weight of 1000 grains and productivity. The results showed that the best performance of the yield rice in the treatments of 7.5 tons/ha posbidik dose with planting space of 25 x 12.5 x 50 cm.

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Tanggap Tiga Varietas Padi Sawah terhadap Kombinasi Pemupukan dengan Sistem Pembenaman Jerami

Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) ◽

10.24831/jai.v43i3.11242 ◽

2016 ◽

Vol 43 (3) ◽

pp. 179

Author(s):

Tri Herdiyanti ◽

Sugiyanta , ◽

Hajrial Aswidinnoor

Keyword(s):

Soil Fertility ◽

Block Design ◽

Organic Fertilizer ◽

Organic Fertilizers ◽

Growth And Yield ◽

Plant Type ◽

Rice Varieties ◽

Inorganic Fertilizers ◽

Local Variety ◽

Straw Incorporation

ABSTRACTDegradation of soil fertility due to inaccurate application of fertilizer become one of the factors causing the stagnant rice productivity improvement in Indonesia. Straw incorporation, organic fertilizers and biofertilizers applications potentially reduces a rates of inorganic fertilizers and improves soil fertility. The aim of this study was to evaluate growth and yield of 3 lowland rice varieties (high yielding variety, new plant type, and local variety) in response to reduce NPK rates with straw incorporation, organic fertilizer, and biofertilizer in 7th planting season. The research was conducted at rice field in Karawang, West Java, from April-August 2013. The research was arranged in split plot randomized block design with 3 replications. The main plot was fertilizer application consisted of 10 treatments (combination of organic and inorganic fertilizers), while the sub plot was rice varieties (Ciherang, IPB 3S, and Mentik Wangi). The application of inorganic fertilizer, 400 kg NPK 30-6-8 ha-1, was control treatment. Plot size was 6.5 m x 10 m, with a double row spacing (25 cm x 15 cm x 50 cm). The result showed that growth of the three varieties was not significantly different so as the yield at 50% reduced NPK rate with incorporation of straw, organic fertilizer and biofertilizer. Adding of solid and liquid organic fertilizer, and biofertilizers on treatment of straw incorporation + 50% NPK rate was unnecessary due to insignificant yield increase.Keywords: Ciherang, fertilizer, IPB 3S, local variety, Mentik Wangi, new plant type

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RESPON PERTUMBUHAN DAN HASIL TANAMAN PADI TERHADAP JARAK TANAM PADA LAHAN TADAH HUJAN DENGAN MENGGUNAKAN PENGAIRAN INTERMITTENT

Agrin ◽

10.20884/1.agrin.2017.21.1.338 ◽

2017 ◽

Vol 21 (1) ◽

Author(s):

Ruminta Ruminta ◽

Agus Wahyudin ◽

Syaza Sakinah

Keyword(s):

Sea Level ◽

Irrigation System ◽

Block Design ◽

Rice Production ◽

Growth And Yield ◽

Row Spacing ◽

Plant Spacing ◽

Rice Varieties ◽

Randomized Block Design ◽

Intermittent Irrigation

Peningkatan produksi padi untuk mencapai kebutuhan pangan nasional diperlukan paket teknik budidayayang baik yang meliputi varietas padi unggul, pemupukan, jarak tanam, dan sistem pengairan yang tepat. Telahdilakukan penelitian budidaya padi menggunakan varietas padi, jarak tanam dan sistem pengairan intermittentpada lahan sawah tadah hujan. Penelitian ini bertujuan untuk mengetahui varietas padi dan jarak tanam yang tepatpada sistem pengairan intermitten di lahan tadah hujan. Penelitian dilakukan pada tahun 2014 pada lahan tadahhujan dengan ketinggian tempat 765 m dpl. Penelitian ini menggunakan Rancangan Acak Kelompok dengan enamperlakuan yang merupakan kombinasi dari dua varietas padi (Ciherang dan Sintanur) dan tiga perlakuan jaraktanam (25x25 cm, 30x30 cm, dan 25x25x50 cm atau legowo 2:1) yang diulang empat kali. Hasil penelitianmenunjukkan bahwa jarak tanam legowo 2:1 pada sistem pengairan intermittent merupakan perlakuan terbaikdalam meningkatkan pertumbuhan dan hasil tanaman padi baik Ciherang maupun Sintanur.Kata kunci: varietas Ciherang dan Sintanur, jarak tanam, padi, pengairan intermittenABSTRACTEffort to increase rice production for achieve the demands of national food needed a good cultivationtechniques such as high-yielding rice varieties, fertilization, plant spacing, and proper irrigation system.Experiment of rice cultivation had been carried out using varieties of rice, row spacing, and irrigation system inthe rain-fed lands. This experiment aims to know the proper varieties of rice and row spacing on intermittentirrigation system in rain-fed land. The Experiment was conducted in 2014 at the rain-fed land with altitude 765 mabove sea level. Randomized Block Design was used with six treatment is a combination of two rice varieties(Ciherang and Sintanur) and three treatment space (25x25 cm, 30x30 cm, and 25x25x50 cm or Legowo 2: 1) andfour times replicating. The results showed that the row spacing of 25x25x50 cm or Legowo 2: 1 in the intermittentirrigation system is the best treatment to increase growth and yield of rice plants both Ciherang and Sintanur.Key words: Ciherang and Sintanur varities, row spacing, rice, intermittent irrigation

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