scholarly journals Effect of Next Generation Fertilizers on Yield Potential of Rice (Oryza sativa L.)

2021 ◽  
Vol 12 (1) ◽  
pp. 007-015
Author(s):  
M. A. A. Faroque ◽  
◽  
Alok Kumar Paul ◽  
Asaduzzaman ◽  
Parimal Bissus ◽  
...  
Keyword(s):  
Harvest Index ◽  
First Generation ◽  
Oryza Sativa L ◽  
Growth And Yield ◽  
Yield Potential ◽  
Next Generation ◽  
Panicle Length ◽  
Rice Varieties ◽  
1000 Grain Weight ◽  
Boro Rice

The experiment was carried out to evaluate the effects of next-generation fertilizers along with other recommended fertilizers on the growth and yield during the period from January 2015 to May 2015 at the experimental field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh. The experiments were laid out in RCBD method with three replications. The experiment was conducted in boro rice with six treatments including control viz Treatment0=Control (no fertilizer), Treatment1=Recommended dose N140P20K60S18Zn2 kg ha-1, Treatment2=Bio-forge+N140P20K60S18Zn2, Treatment 3=Wuxal Super+N140P20K60S18Zn2, Treatment4=Root feed+N140P20K60S18Zn2, Treatment5=Nitro Plus+N140P20K60S18Zn2 and three rice varieties namely Variety1=BRRI dhan29, Variety2=BRRI dhan28 and Variety3=BRRI dhan58. Next-genaration fertilizer is a mixed fertilizer with the first generation and second generation fertilizer that provide required nutritions to plants. Among the next generation fertilizers, Bio-forge along with other recommended fertilizers performed the best compared to other treatments of the study in an aspect of growth and yield contributing characters mainly plant height, effective tiller hill-1, panicle length, filled grain panicle-1, 1000-grain weight, harvest index and grain yield (8.61 t ha-1). Among the varieties, BRRI dhan29 showed the best performance compared to the other two treatments. The next generation fertilizer viz. Bio-forge and Root feed along with other recommended fertilizers would be ideal for better crop growth and yield.

scholarly journals Effect of cyanobacteria on growth and yield of boro rice under different levels of urea

2015 ◽  
Vol 40 ◽  
pp. 23-29
Author(s):  
Wahida Khatun ◽  
Md. Musleh Ud-Deen ◽  
Golam Kabir
Keyword(s):  
Yield Components ◽  
Growth Yield ◽  
Growth And Yield ◽  
Panicle Length ◽  
Rice Varieties ◽  
Biological Yield ◽  
Different Levels ◽  
1000 Grain Weight ◽  
Boro Rice ◽  
Pot Culture

A pot culture and a field experiment were conducted with cyanobacteria in presence and absence of different levels of urea to evaluate their effects on growth and yield of rice cv. BRRI Dhan 28, 29 and 36 during Boro season of 2007. The treatments were T1 (control), T2 (only cyanobacteria), T3 (recommended doses of urea - 60 kg N/ha), T4 (45% recommended doses of urea + cyanobacteria), T5 (65% recommended doses of urea + cyanobacteria) and T6 (85% recommended doses of urea + cyanobacteria).The maximum values for different growth, yield and yield components (plant height, number of productive tillers/hill, panicle length, number of grains/panicle, 1000-grain weight, and grain, straw and biological yield) were observed in BRRI Dhan 29 under T6 (85% recommended doses of urea + cyanobacteria) and lowest was observed in BRRI Dhan 28 under T1 (neither urea nor cyanobacteria). Uses of cyanobacteria increased the yield of Boro rice varieties and decreased the use of urea by 15-20%.

scholarly journals Variability, Traits Association And Path Coefficient Of Yield And Yield Contributing Traits Of Selected Boro Rice (Oryza Sativa L.) Germplasm

2020 ◽  
Vol 17 (2) ◽  
pp. 103-115
Author(s):  
T Chakrabarty ◽  
MZ Islam ◽  
N Akter ◽  
M Khalequzzaman
Keyword(s):  
Harvest Index ◽  
Oryza Sativa L ◽  
Direct Selection ◽  
Path Coefficient ◽  
Days To Flowering ◽  
Rice Germplasm ◽  
Parameters Selection ◽  
Days To Maturity ◽  
1000 Grain Weight ◽  
Boro Rice

Boro season is the most productive among Aus, Aman and Boro seasons. For confirming food security, we need to emphasize more on Boro season to feed more people. That’s why forty entries of Boro rice germplasm were allowed to evaluate for their genetic variations in yield and yield contributing traits, their associations and also direct and indirect effects on yield. Observing means, range and all genetic parameters, selection could be done on the basis of number of effective tillers, harvest index, filled grains per panicle, unfilled grains per panicle, days to maturity and grain yield. Traits association analysis revealed that days to flowering, days to maturity and filled grain per panicle could significantly improve rice germplasm. Path analysis estimated that direct selection based on days to flowering, days to maturity and filled grain per panicle would be efficient for improvement of rice germplasm. G5 had the highest yield along with filled grain per plant, harvest index and 1000 grain weight and it could be used as potential variety for improving yield. The germplasm G7, G19, G9 and G33 could be used in further breeding program for the improvement of rice germplasm. SAARC J. Agri., 17(2): 103-115 (2019)

scholarly journals Effect of Triple Super Phosphate on the Growth and Yield of Boro Rice in Haor Areas of Sunamganj District in Bangladesh

2019 ◽  
pp. 1-8
Author(s):  
B. K. Goswami ◽  
M. A. Kashem ◽  
M. A. Aziz ◽  
T. K. Saha
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Growth And Yield ◽  
Panicle Length ◽  
Straw Yield ◽  
Fertilizer Recommendation ◽  
Triple Super Phosphate ◽  
Two Factors ◽  
1000 Grain Weight ◽  
Boro Rice

A field experiment was conducted at Bilpar village of Sunamganj district in Bangladesh during November 2016 to May 2017 to find out the effects of Triple Super Phosphate (TSP) fertilizer on the growth and yield of boro rice in haor areas. Two factors viz. varieties (BRRI dhan29 and BRRI dhan58) and six TSP fertilizer levels [F1- 85 kg TSP ha-1 (Farmers’ practice), F2- 142 kg TSP ha-1, F3- 127 kg TSP ha-1, F4- 112 kg TSP ha-1 (BARC recommended dose), F5- 97 kg TSP ha-1, F6- 82 kg TSP ha-1] were included in the experiment. The experiment was conducted in the farmers’ field and laid out in a RCBD with three replications. Data were taken on plant height and tillers hill-1 at 15 days intervals. The yield and yield contributing parameters were also taken at harvest. Plant height, number of total tillers, effective tillers hill-1, panicle length, sterile spikelets, 1000 grain weight, grain and straw yield varied significantly due to variety. BRRI dhan58 produced higher number of effective tillers (10.60) and grains panicle-1 (136.9) over BRRI dhan29. BRRI dhan58 produced higher grain yield (8.92 t ha-1) compared to BRRI dhan29 (7.27 t ha-1). All the studied parameters differed significantly with the application of TSP fertilizer except non-effective tillers hill-1. Application of 112 kg TSP ha-1 produced the highest number of effective tillers hill-1 (12.00) and the lowest in farmers practice (7.20). Fertilizer Recommendation Guide based TSP fertilizer (112 kg ha-1) produced the highest grain yield (8.80 t ha-1) of boro rice and the lowest grain yield (7.40 t ha-1) in farmers’ practice. Results of the study elucidated that TSP application at 112 kg ha-1 was effective to improve the rice productivity.

scholarly journals Performansi Morfo-agronomis Pada Padi Galur Mutan Generasi (M4) Hasil Radiasi Sinar Gamma

2020 ◽  
Vol 3 (4) ◽  
pp. 96-104
Author(s):  
Ria Kurnia ◽  
Halimursyadah Halimursyadah ◽  
Efendi Efendi
Keyword(s):  
Plant Height ◽  
Harvest Index ◽  
Gamma Ray ◽  
Block Design ◽  
Organic Fertilizer ◽  
Growth And Yield ◽  
Yield Potential ◽  
Panicle Length ◽  
Host Genotype ◽  
Treatment Unit

Abstrak. Tanaman padi Terdiri dari 16 galur sebagai perlakuan dan terdiri 3 kelompok sebagai ulangan. Masing-masing unit perlakuan diambil sampel sebanyak 5 individu tanaman. Peubah yang diamati adalah tinggi tanaman, jumlah anakan, umur padi berbunga, jumlah malai per rumpun, panjang malai, berat malai per rumpun, persentase gabah bernas per rumpun, persentase gabah hampa per rumpun, berat 1000 butir, indeks panen dan potensi hasil. Hasil penelitian menunjukkan genotipe padi mutan generasi M4 berpengaruh nyata terhadap pertumbuhan dan hasil tanaman yang diamati berdasarkan peubah tinggi tanaman umur 30, 60, 90 HST,umur tanaman berbunga dan pada saat panen jumlah malai per rumpun, panjang malai, berat bernas, berat 1000 butir, indeks panen dan potensi hasil. Galur padi mutan menunjukkan pertumbuhan hasil yang berbeda dengan tanaman induknya sambay. Galur Unsyiah 11 (UF5) menunjukkan genotipe dengan potensi hasil yang lebih tinggi dibandingkan dengan dengan genotipe induk dan genotipe lainnya. Berdasarkan hasil iradiasi sinar gamma M4 menunjukkan adanya perbedaan nilai antar tanaman induk sambay dengan galur lainnya. Morpho-agronomic Performance on Mutant Strain Rice Generation (M4) The Result of Gamma Ray Radiation Abstract. Rice crops planted in a field with soil entisol type by using organic fertilizer i.e. manure which is given a week before planting and chemical fertilizer formed of  NPK that is given at the age of the plant 30 days after the day of planting (DAP). The experimental design used non factorial randomized block design. There were 16 strains as treatment and 3 groups as replicates. Each of the treatment unit was sampled as many as 5 individual plants. The variables observed were plant height, number of tillers, age of flowering rice, number of panicles per hill, panicle length, panicle weight per hill, percentage of pithy grain per hill, percentage of empty grain per hill, weight of 1000 grains, harvest index and yield potential. The results showed that genotypes of M4 mutant rice generation had significant effect on growth and yield of plants which observed based on plant height variable 30, 60, 90 DAP, age of flowering rice, and number of panicle per hill at the harvest time, panicle length, pithy rice, weight of 1000 grains, harvest index and yield potential. The mutant rice strains showed different growth results with the parent plant. The Unsyiah 11 (UF5) strain is a genotype with higher yield potential compared to the host genotype and other genotypes. Based on the result of M4 gamma ray radiation showed there is adifference between sambay parent plants with other strains. 

scholarly journals PENGARUH PUPUK ORGANIK CAIR UNITAS SUPER ASAL Chromolaena Odorata TERHADAP PERTUMBUHAN DAN HASIL PADI HITAM (Oryza sativa L.)

2018 ◽  
Vol 8 (2) ◽  
pp. 15 ◽  
Author(s):  
Jamilah Munir ◽  
Beben Kurniawan ◽  
Zahanis Zahanis
Keyword(s):  
Oryza Sativa ◽  
Harvest Index ◽  
Oryza Sativa L ◽  
Growth And Yield ◽  
Panicle Length ◽  
Chromolaena Odorata ◽  
Black Rice ◽  
Urban Village ◽  
Randomized Design ◽  
Completely Randomized Design

The aim of this research was to know the influence of concentration and interval of Liquid organic manure (LOM) Unitas Super  (US) form Chromolaena odorata on growth and yield of black rice (Oryza sativa L.). The experiment was conducted from October 2016 to March 2017 in Lubuk Minturun Urban Village, Koto Tangah Sub-district, Padang. The experiments were arranged in Completely Randomized Design, with 6 doses of POC Unitas Super (US) (v/v) with water, ie; 0 ml L-1 (F1); 50 ml L-1, 1 time a week (F2), 50 ml L-1, 1 time 2 weeks (F3), 100 ml L-1, a weekly (F4), 100 ml L-1, 1 time every 2 weeks (F5); 150 ml L-1 POC US, 1 time every 3 weeks (F6), and 3 replications. The data obtained were analyzed using analysis of variance (ANOVA) 5% real level. If the treatment had a significant effect, it was continued with LSD test of 5% real level. Parameters observed include; Plant height, the maximum number of tillers and productive, flowering age, harvest, panicle length, the number of grains per panicle, weight of 1000 seeds, the weight of dry grain per hectare, percentage of empty grain and harvest index. The experimental results proved that there was an influence of LOM Unitas Super treatments on maximum tillers, empty grain, panicle length and dry grain harvest, and some other parameters were not significance. The conclusion was the giving of 50 ml L-1 POC Unitas Super given every week is the best treatment. The highest rice yield reached 6.79 tons ha-1 dry milled grain, with harvest index reached 0.49.  

scholarly journals Effect of variety and nitrogen rate on the yield performance of boro rice

2015 ◽  
Vol 26 (1) ◽  
pp. 6-14 ◽  
Author(s):  
SG Chamely ◽  
N Islam ◽  
S Hoshain ◽  
MG Rabbani ◽  
MA Kader ◽  
...  
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
Block Design ◽  
Panicle Length ◽  
Straw Yield ◽  
Randomized Complete Block Design ◽  
Harvest Data ◽  
1000 Grain Weight ◽  
Boro Rice

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from November 2010 to May 2011 to study the effect of variety and rate of nitrogen on the performance of Boro rice. The experiment comprised three varieties viz., BRRI dhan28 (V1), BRRI dhan29 (V2) and BRRI dhan45 (V3); and five rates of nitrogen viz., control (N0), 50 kg  (N1), 100 kg (N2), 150 kg  (N3)and 200 kg  (N4) N ha-1. The experiment was laid out in a randomized complete block design with four replications. The growth analysis results indicate that the tallest plant (80.88 cm) and the highest number of total tillers hill-1 (13.80) were observed in BRRI dhan29 at 70 DATs and the highest total dry matter (66.41 g m-2) was observed in BRRI dhan45. The shortest plant (78.15 cm) and the lowest number of tillers hill-1 (12.41) were recorded from BRRI dhan45 and the lowest dry matter (61.24 g) was observed in BRRI dhan29. The tallest plants (84.01 cm), highest number of tillers hill-1 (14.06) and the highest dry matter (69.58 g m-2) were obtained from 200 kg N ha-1. The tallest plants (86.48 cm) and maximum dry matter (72.30 g m-2) were recorded from BRRI dhan28 with 200 kg N ha-1 and BRRI dhan45 with 200 kg N ha-1, respectively. The highest number of tillers hill-1 (15.14) was obtained from BRRI dhan29 with 50 kg N ha-1. The harvest data reveal that variety had significant effect on total tillers hill-1, effective tillers hill-1, non-effective tillers hill-1, panicle length, grain yield, straw yield and harvest index. The highest grain yield (4.84 t ha-1) was recorded from BRRI dhan29. The results of the experiment also indicate that total tillers hill-1, effective tillers hill-1, grains panicle-1, sterile spikelets panicle-1, grain yield, straw yield and harvest index were significantly affected by levels of nitrogen, while plant height, panicle length, 1000-grain weight were not significantly affected by levels of nitrogen. The highest grain yield (5.58 t ha-1) was obtained from 200 kg N ha-1. Interaction effect of variety × 200 kg N ha-1 produced the highest grain yield (5.82 t ha-1). From the results of the study it may be concluded that BRRI dhan29 rice may be cultivated with 200 kg N ha-1 for obtaining higher yield in AEZ 9 of Bangladesh.Progressive Agriculture 26:6-14, 2015

scholarly journals Diversity analysis in Boro rice (Oryza sativa L.) accessions

1970 ◽  
Vol 35 (1) ◽  
pp. 29-36 ◽  
Author(s):  
MS Ahmed ◽  
Khaleda Akter ◽  
ESMH Rashid ◽  
MK Bashar
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Harvest Index ◽  
Flag Leaf ◽  
Mean Value ◽  
Seedling Height ◽  
Panicle Length ◽  
Grain Length ◽  
1000 Grain Weight ◽  
Boro Rice

An experiment was conducted with 36 accessions of traditional (local) Boro rice germplasm accessions of three different groups (20 accessions as Kaliboro, 12 as Jagliboro and 4 as Tepiboro) during Boro season 2004 at BRRI farm to identify the duplicates with the help of morph-agronomic characters. On the basis of D2 values, the 36 genotypes were grouped into six clusters with a range of intra (0.00 for cluster II to 1.78 for cluster I) and inter cluster (1.99 between cluster I and III to 21.20 between cluster II and III) distances. Cluster I comprised the highest number of genotypes (10) and cluster II the lowest (1), while cluster III, IV, V, and VI included 6, 7, 5, and 7 genotypes, respectively. Differences in cluster means existed for almost all the characters. The highest mean value for seedling height (21.68 cm), 1000-grain weight (20.97 g) and grain yield/hill (6.87 g) were observed in cluster I, II for days to 50% flowering (116), panicle length (22.80 cm), grains/panicle (74), and grain length (8.35 mm), cluster IV for tillers/hill (16.44) and panicles/hill (14.17), cluster V for harvest index (0.32) along with cluster I and VI, and cluster VI for plant height (117.17 cm) and flag leaf area (30.68 cm2). None of the 12 characters had the highest mean value under cluster III. The canonical variate analysis showed in general that the important characters for the differentiation in the descending order of importance were grain length, days to 50% flowering, grains/panicle, grain yield/hill, panicle length, flag leaf area, plant height, seedling height, 1000-grain weight, panicles/hill, harvest index, and tillers/hill, but the similar name group accessions are not duplicate mainly due to dissimilarity of grain length, days to 50% flowering, grains/panicle and grain yield/hill characters. It is apparent from the results that the same name group accessions were quite different from each other. Keywords: Duplicate sorting; rice (Oryza sativa L.); germplasm. DOI: 10.3329/bjar.v35i1.5864Bangladesh J. Agril. Res. 35(1) : 29-36, March 2010

scholarly journals Pendugaan Nilai Heritabilitas Karakter Agronomi Tanaman Padi (Oryza sativa L) Generasi F2

2020 ◽  
Vol 3 (4) ◽  
pp. 125-131
Author(s):  
Aliyul Qadri ◽  
Erita Hayati ◽  
Efendi Efendi
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Population Data ◽  
Broad Sense ◽  
Yield Potential ◽  
Panicle Length ◽  
Environmental Variance ◽  
Panicle Number ◽  
1000 Grain Weight ◽  
Banda Aceh

Abstrak. Penelitian bertujuan untuk mendapatkan informasi tingkat heritabilitas tanaman padi generasi F2 hasil persilangan varietas Batutegi dangan IRBB-27. Penelitian ini dilaksanakan di rumah kaca Fakultas Pertanian, Universitas Syiah Kuala, Darussalam Banda Aceh. Pelaksanaan penelitian dimulai dari April sampai September 2017. Pendugaan nilai heritabilitas pada penelitian ini menggunakan pendugaan ragam lingkungan tidak langsung metode Mahmud-Kramer (Broad sense-per tanaman). Pendugaan nilai heritabilitas ini menggunakan data populasi P1, P2, dan F2. P1 dan P2 merupakan galur murni, sedangkan F2 merupakan turunan kedua dari persilangan P1 dan P2. Ragam fenotipe (σ2P) diduga dari σ2F2. Ragam lingkungan (σ2E) diduga dari √(σ2P1)(σ2P2). Pada karakter tinggi tanaman, jumlah malai, berat malai, berat 1000 butir, umur paner, dan potensi hasil memiliki nilai heritabilitas 92%, 55%, 51%, 89%, 64% dan 60% dengan kriteria tinggi. Sedangkan karakter panjang malai, dan persentase gabah bernas, memiliki nilai heritabilitas 29% dan 33% dengan kriteria sedang.Estimating the Heritability Value of Agronimic Character of Rice (Oryza sativa L) Generation F2Abstract. The aim of this research was to obtain information on the level of heritability of generation F2 rice produced by crossing of the Batutegi variety with IRBB-27. This research was carried out in the greenhouse of the Faculty of Agriculture, Syiah Kuala University, Darussalam Banda Aceh. The research starts from April to September 2017. Estimating the heritability value in this study uses indirect environmental estimation of the Mahmud-Kramer method (Broad sense- plant). Estimating this heritability value uses population data P1, P2 and F2. P1 and P2 are pure strains, while F2 is the second derivative of P1 and P2 crosses. Phenotype variance (σ2P) is assumed to be from σ2F2. Environmental variance (σ2E) is assumed to be from √(σ2P1) (σ2P2). In the character of plant height, panicle number, panicle weight, 1000 grain weight, paner age, and yield potential has a heritability value of 92%, 55%, 51%, 89%, 64% and 60% with high criteria. While the panicle length character, and the percentage of pithy grain, has a heritability value of 29% and 33% with medium criteria.

scholarly journals Variation of Growth and Yield of Boro Rice Influenced by Transplanting Method and Gypsum Rate in the Salinity Affected Area of Noakhali in Bangladesh

2019 ◽  
pp. 1-9
Author(s):  
S. M. A. Alim ◽  
M. A. Kader ◽  
M. A. Islam ◽  
S. Akram ◽  
M. A. Rouf ◽  
...  
Keyword(s):  
Harvest Index ◽  
Latin Square ◽  
Growth And Yield ◽  
Panicle Length ◽  
Straw Yield ◽  
Affected Area ◽  
Negative Effect ◽  
Ameliorative Effect ◽  
Four Levels ◽  
Boro Rice

Field experiment was carried out in Moddhochar Jabbar of Noakhali, Bangladesh during Boro season (December-April) 2018 to investigate the ameliorative effect of application of gypsum and transplanting method on the yield of BRRI dhan28 (V1) and BINAdhan-10 (V2)under salinity stress. The experiment comprised 3 factors; Transplanting method, Variety and Gypsum. This variety was evaluated under two transplanting methods i.e., Furrow transplanting (T1) and Conventional transplanting (T2) and four levels of gypsum with control G0: control, G1: 50 kg ha-1,G2: 100 kg ha-1 and G3: 150 kg ha-1 .The experiment was laid out in a Latin Square Design (LSD) with three replications. Salinity level had significant negative effect on plant characters and yield of rice.  Gypsum (@ 150 kg/ha) exerted positive significant effect on most of the plant parameters except number of non-effective tillers. Furrow transplanting method (T1) had positive significant effect on most of the plant parameters except panicle length and harvest index. Binadhan-10 shows better performance than BRRI dhan28 in case of yield and all yield contributing characters in the prevailing condition. The highest grain yield (6.63 t ha-1) found from T1V2G3 (combination of furrow transplanting method, Binadhan-10 and gypsum @ 150 kg/ha) and lowest (4.26 t ha-1) inT2V1G0 (combination of conventional transplanting method, BRRI dhan28 and gypsum @ 0 kg ha-1). It was calculated that the straw yield highest (8.14 t ha-1) in T1V2G2 (combination of furrow transplanting method, Binadhan-10 and gypsum @ 100 kg/ha) and lowest (5.61 t ha-1) in T2V1G0 (combination of conventional transplanting method, BRRI dhan28 and gypsum @ 0 kg/ha).

scholarly journals Effect of different age of seedlings on the growth and yield performance of transplanted Aus rice variety

2021 ◽  
pp. 1-6
Author(s):  
Md. Khairul Islam ◽  
Kawsar Hossen ◽  
Mithila Afroge ◽  
Arman Hosen ◽  
Kazi A. A. Matin Masum ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Harvest Index ◽  
Block Design ◽  
Rice Variety ◽  
Growth And Yield ◽  
Panicle Length ◽  
Rice Varieties ◽  
Straw Yield ◽  
Minimum Number

An experiment was conducted in the Agriculture Field Laboratory, Noakhali Science and Technology University (NSTU) to evaluate the effects of age of seedlings on the yield and growth performance of transplanted Aus (T. Aus) rice variety from April 2019 to July 2019. The experiment was carried out assigning four age of seedlings (T1 = 22-day old, T2 = 24-day old, T3 = 27-day old, T4 = 30-day old) and two rice varieties (V1 = BRRI dhan83, V2 = BRRI dhan65). The experiment was laid out in a Randomized Complete Block Design with three replications. In case of variety, the highest plant height (102.108 cm), the highest grain yield (2.643 t/ha), and the highest harvest index (32.317%) were obtained in BRRI dhan83 where the lowest plant height (87.804 cm), the lowest grain yield (2.431 t/ha) and the lowest harvest index (32.068%) were obtained in BRRRI dhan65. The age of seedlings had significantly affected total tillers/hill, effective tillers/hill, panicle length in T. Aus rice variety. The highest plant height (98.16 cm), straw yield (6.122 t/ha), the maximum number of effective tillers/hill (15.347) were obtained in 24 days old seedlings. The highest grain yield (2.634 t/ha) was obtained from 27 days old seedlings, and the highest harvest index (33.88%) was obtained from 22 days old seedlings. The lowest grain yield (2.429) was obtained from 24 days old seedlings, and the lowest panicle length (13.753 cm), harvest index (30.467%), and the minimum number of effective tillers/hill (13.753) were obtained from 30 days old seedlings. The lowest straw yield (5.075 t/ha) and plant height (93.16 cm) were obtained from 22 days old seedlings. In case of interaction, the highest plant height (104.667 cm) and the harvest index (34.86%) were observed in BRRI dhan83 at 27 days old seedlings. The highest straw yield (5.805 t/ha) was observed in BRRI dhan65 at 30 days old seedlings. The maximum number of effective tillers/hill (18.519) was observed in BRRI dhan83 at 24 days old seedlings. The highest grain yield (2.94 t/ha) was observed in BRRI dhan83 at 22 days old seedlings. The lowest plant height (80.67 cm) was observed in BRRI dhan65 at 27 days old seedlings. The minimum number of total tillers/hill (17.01) was observed in BRRI dhan83 at 22 days old seedlings; lowest panicle length (20.78 cm), the minimum number of grains/panicle (68.07) were observed in BRRI dhan65 at 24 days old seedlings; 1000 grains weight (22.76 g), the lowest grain yield (2.18 t/ha) were observed in BRRI dhan83 at 24 days old seedlings; the lowest straw yield (4.54 t/ha) was observed in BRRI dhan65 at 22 days seedlings old and lowest harvest index (29.09%) were observed in BRRI dhan65 at 30 days old seedlings. Based on the above results, it may be concluded that almost all of the yield and yield contributing characters of T. Aus rice performed best under the interaction between age of seedlings 22 days old seedlings and the variety BRRI dhan85.

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