scholarly journals Karakter morfologi akar sebagai indikator kekurangan air pada padi lokal Superwin (Root-morphological characters as water-deficit indicators in local rice Superwin)

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Patricia Claudya Torey ◽  
Song Ai Nio ◽  
Parluhutan Siahaan ◽  
Susan M Mambu
Keyword(s):  
Oryza Sativa ◽  
Water Deficit ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Weight Ratio ◽  
Field Capacity ◽  
Dry Weight ◽  
Morphological Characters ◽  
Limited Area ◽  
Rice Varieties

Abstrak Evaluasi karakter morfologi akar telah dilakukan untuk menentukan karakter morfologi akar yang potensial sebagai indikator adanya kekurangan air pada padi (Oryza sativa L.) di antara panjang akar, volume akar, berat basah akar, berat kering akar, rasio akar:tajuk dan rasio panjang akar:tinggi tanaman. Eksperimen ini dilakukan di rumah kaca dan menggunakan 2 varietas padi (Superwin dan IR 64) pada fase vegetatif  yang ditumbuhkan pada media tanah di polybag dengan perlakuan kekeringan (tidak disirami selama 14 hari) dan disirami sampai kapasitas lapang (kontrol). Panjang akar dan rasio panjang akar:tinggi tanaman dapat dijadikan indikator kekurangan air pada padi Superwin dan IR 64. Superwin yang merupakan padi sawah dapat dipertimbangkan untuk ditanam di lahan kering. Kata kunci: indikator, kekeringan, morfologi akar Abstract Root-morphological characters in rice (Oryza sativa L.) were evaluated to determine the potential characters as water-deficit indicators among the length, volume, fresh weight, dry weight, ratio root:shoot and ratio root length:plant height. The experiment was conducted in the glasshouse using 2 rice varieties (cv. Superwin and IR 64) grown in the soil mixture at the vegetative phase. The treatments in this experiment were water deficit (without water for 14 days) and well-watered (watering until field capacity). The root length and ratio root length:plant height were potential as water- deficit indicators in Superwin dan IR 64. The upland rice, Superwin, should be considered to be cultivated in the water limited area. Keywords: drought, indicator, root morphology

Comparative studies of upland and swamp rice varieties (Oryza sativa L.) II. Effect of varying supply of manganese on growth and yield

1968 ◽  
Vol 71 (1) ◽  
pp. 15-17
Author(s):  
B. A. C. Enyi
Keyword(s):  
Oryza Sativa ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Growth And Yield ◽  
Flooded Soil ◽  
Rice Varieties ◽  
Plant Grown ◽  
Moisture Saturation ◽  
Total Dry Weight

SummaryUpland rice (Agbede) and swamp rice (BG 79) varieties grown on flooded soil, and on soil maintained at 80 and 100% moisture saturation were sprayed with solutions containing 0 ppm (MO), 10 ppm (Ml), and 20 ppm (M2) of manganese.The M 2 treatment depressed total dry weight and dry weights of leaf laminae, stems, leaf sheaths and root of both varieties grown on soil maintained at either 80 or 100% moisture saturation. The M 1 treatment increased the ear weight of Agbede grown on soil maintained at either 80 or 100% moisture saturation, while the M 2 treatment increased the ear weight of plant grown on saturated soil. In flooded soil both the M 1 and M 2 treatments significantly increased dry weight of Agbede plants, but only the M 2 treatment increased ear dry weight of BG 79. The ear weight of Agbede plants receiving M 0 and M 1 treatment decreased with increasing soil moisture while that of BG 79 increased.It is considered that manganese supply limits yield of Agbede grain grown on flooded soil.

scholarly journals Pengaruh Pemberian Pupuk Kompos Jerami terhadap Pertumbuhan Dua Varietas Padi Gogo (Oryza sativa L.) pada Tanah Ultisol

2020 ◽  
Vol 4 (2) ◽  
pp. 61-70
Author(s):  
Faridah Faridah ◽  
Erida Nurahmi ◽  
Nurhayati Nurhayati
Keyword(s):  
Oryza Sativa ◽  
Plant Height ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Rice Varieties ◽  
Split Plot ◽  
Two Factors ◽  
Number Of Leaves ◽  
Plot Design

Abstrak. Penelitian ini dilaksanakan diTaman Teknologi Pertanian (TTP) Jantho Kecamatan Kota Jantho, Kabupaten Aceh Besar, dan Laboratorium Fisiologi Tumbuhan Fakultas Pertanian Universitas Syiah Kuala, yang berlangsung sejakbulan Agustus hingga Desember 2016. Penelitian ini menggunakan rancangan petak terpisah (split plot design), dengan dua faktor yaitu dosis pupuk kompos jerami dan varietas. Dosis pupuk kompos jerami menjadi petak utama yang terdiri atas 3 taraf yaitu (kontrol, 10 dan 20 ton ha-1), varietas menjadi anak petak yang terdiri atas 2 taraf yaitu (Situ Patenggang dan Sanbei). Peubah yang diamati meliputi tinggi tanaman, jumlah daun, jumlah anakan, dan berat berangkasan kering. Perlakuan dosis pupuk kompos jerami berpengaruh sangat nyata terhadap tinggi tanaman pada umur 4 dan 8 MST. Perlakuan varietas berpengaruh sangat nyata terhadap jumlah daun pada umur 4 dan 8 MST. Terdapat interaksi antara kompos jerami dan varietas terhadap jumlah anakan, jumlah daun dan berat berangkasan kering. Dosis pupuk kompos jerami yang terbaik terhadap pertumbuhan padi gogo  pada tanah ultisol adalah 20 ton ha-1. Pertumbuhan padi gogo terbaik pada tanah ultisol dijumpai pada varietas sanbei. Kombinasi terbaik terhadap pertumbuhan padi gogo pada tanah ultisol adalah dosis pupuk kompos jerami 20 ton ha-1 dengan varietas sanbei.The Effect of Straw Compost Fertilizer on the Growth of Two Gogo Rice Varieties (Oryza sativa L.) in Ultisol SoilAbstract. This research was conducted in the Agricultural Technology Park (ATP) of Jantho, Kota Jantho Subdistrict, Aceh Besar Regency, and Laboratory of Plant Physiology at the Faculty of Agriculture, Syiah Kuala University, which lasted from August to December 2016. The study used a split plot design, with two factors are doses of straw compost fertilizer and varieties. The doses of straw compost became the main plot consisting of 3 levels, namely (control, 10 and 20 tons ha1), the varieties being subplots consisting of 2 levels namely (Situ Patenggang and Sanbei). The variables observed included plant height, number of leaves, number of tillers, and dry weight. The treatment of straw compost doses significantly affected plant height at age 4 and 8 WAP. The treatment of varieties had a very significant effect on the number of leaves at ages 4 and 8 WAP. There were interactions between straw compost and varieties on the number of tillers, number of leaves and weight of dry stover. The best dose of straw compost for padigogo growth in ultisol soil is 20 tons ha-1. The best growth of upland rice on ultisol soil was found in sanbei varieties. The best combination of the growth of upland rice on ultisol soil is the dose of straw compost fertilizer 20 tons ha-1 with varieties of sanbei.

scholarly journals Effect of Silicate Fertilizer on the Growth and Yield of Two Local Indonesian Varieties of Rice (Oryza sativa L.)

2021 ◽  
Author(s):  
D.W. Widjajanto ◽  
Sumarsono . ◽  
Endang Dwi Purbajanti
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Growth And Yield ◽  
Rice Varieties ◽  
Growing Period ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Beneficial Elements

Background: The beneficial elements availability such as silicon was determined rice growth and yield. Rice requires a different dose of silicon during the growing period. Experiment was aimed to investigate the effect of silicate levels, rice varieties and the interaction of the two on the growth and yields of two local Indonesian varieties of rice. Methods: A completely randomized design of factorial pattern with 4 replications was used in the experiment. Treatments consisted of No added SiO2 (Si-0); added 100 and 200 kg SiO2 ha-1, respectively for Si-100 and Si-200 and two local rice varieties, Pandan wangi (P1) and Mentik susu (P2). Result: The treatment had no significant effect on growth and yield of rice. Addition of 100 and 200 kg SiO2 ha-1 to P1 and P2 did not show a significant difference on the growth and yield of rice compared to control (P0). Plant height and root dry weight at P1 was lower than P2, but the 1,000-grain weight was showed, vice versa. Silicon addition up to 200 kg SiO2 ha-1 may not be recommended to be applied in rice cultivation, especially Pandan wangi and Mentik susu varieties. Improving the two varieties, further research is needed by increasing the silicon doses. 

scholarly journals Weed dynamics and yield of direct seeded upland autumn rice (oryza sativa l.) Varieties as influenced by integrated weed and nutrient management practices

2018 ◽  
Author(s):  
G Goswami ◽  
N C. Deka ◽  
N J Ojha
Keyword(s):  
Oryza Sativa ◽  
Management Practices ◽  
Nutrient Management ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
Rice Varieties ◽  
Randomized Block Design ◽  
Direct Seeded ◽  
Weed Dynamics

A field experiment was conducted during autumn, 2014 at ICR Farm, Assam Agricultural University, Jorhat, Assam to compare three different direct seeded upland rice varieties along with different integrated weed and nutrient management practices. The experiment was carried out in factorial randomized block design replicated thrice with 15 treatments involving 3 varieties: Inglongkiri, Maizubiron and Rasi along with 5 treatments of weed and nutrient management,

scholarly journals Effect of Salt Stress on Germination and Growth Parameters of Rice (Oryza sativa L.)

2014 ◽  
Vol 6 (2) ◽  
pp. 237-243 ◽  
Author(s):  
Akinbode Foluso OLOGUNDUDU ◽  
Adekunle Ajayi ADELUSI ◽  
Richard Olutayo AKINWALE
Keyword(s):  
Oryza Sativa ◽  
Root Length ◽  
Dry Matter ◽  
Growth Parameters ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Yield Reduction ◽  
Growth Stages ◽  
Dry Matter Yield ◽  
Rice Varieties

The response of eight varieties of Oryza sativa L. (‘NERICA 1’, ‘NERICA 5’, ‘NERICA 12’, ‘NERICA 19’, ‘IR 29’, ‘IR 20’, ‘IWA 11’, and ‘POKKALI’, a salt tolerant check) against four salinity levels (0, 5, 10, and 15 ds m-1) were studied at germination and early growth stages. Data were analyzed using Statistical Analytical System (SAS) and means were separated by Duncan Multiple Range Test (DMRT) for Final Germination Percentage (FGP), Speed of Germination (SG), Germination Energy Percentage (GE%), shoot and root length and root and shoot dry weight. Based on dry matter yield reduction, rice varieties were classified as tolerant (T), moderately tolerant (MT), moderately susceptible (MS) or susceptible (S). Germination was not recorded at 20 ds m-1 salt concentration in all cultivars. Salinity decreased FGP, SG, GE% and led to reduction in shoot and root length and dry weight in all varieties and the magnitude of reduction increased with increasing salinity stress. Rice varieties ‘NERICA 12’, ‘IR 20’, ‘IWA 11’ and ‘NERICA 19’ showed greater salt tolerance during germination (germinated at 10 ds m-1 salinity). However, ‘NERICA 1’, ‘IR 29’, and ‘IR 20’ performed better based on dry matter yield reduction. The result suggested that ‘NERICA 1’, ‘IR 29’, and ‘IR 20’ might be used for further study of salinity effect on growth processes and physiological consequences at advanced stage of growth. The physiological responses of rice plants to salinity at various developmental stages are therefore critical for identifying salinity tolerance in the cultivars.

scholarly journals Determination of germination and seedling growth parameters of rice (Oryza sativa L.) varieties under stress conditions

2020 ◽  
Vol 12 (3) ◽  
pp. 693-701
Author(s):  
Fatih ÖNER ◽  
Ayşe Ö. Ş. SOYSAL
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Growth Parameters ◽  
Oryza Sativa L ◽  
Germination Rate ◽  
Dry Weight ◽  
Germination Percentage ◽  
Abiotic Factor ◽  
Rice Varieties ◽  
Stress Levels

Rice (Oryza sativa L.) is an important food for more than half of the world’s population. Globally, rice is grown on approximately 160 million hectares with an average annual production of 740.96 million tonnes. Salinity is an important abiotic factor for germination. In this study rice varieties were analysed for salt stress tolerance at germination growth stage. The response of eight rice varieties against six (0, 25, 50, 75, 100, 150 mM NaCl) salinity levels were studied at germination stage. Seeds of eight rice varieties (‘Yatkin’, ‘Miss-2013 Passali’, ‘Kale’, ‘Manyas Yildizi’, ‘Efe’, ‘Biga Incisi’ and ‘Osmancik-97’) were kept under six salt stress levels. Number of seeds germinated (number), germination rate (%), average germination time, fresh and dry weight of germinated seeds (g), fresh and dry weight of the coleoptile (g), fresh and dry weight of the radicle (g), the length of the coleoptile and radicle (mm) were recorded. The results showed that with increasing salt stress, germination in all the varieties was delayed. The increase in salt stress also reduced every measured trait significantly in all the varieties. Maximum germination percentage (100%) was observed in ‘Biga Incisi’ under all the salt stress levels. Our research data would be helpful for identification of the tolerant varieties which can be studied further in terms of economically.

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