scholarly journals Photosensitive Rice (Oryza sativa L.) Varieties under Delayed Planting as an Option to Minimize Rice Yield Loss in Flood Affected T. Aman Season

2020 ◽  
Vol 23 (1) ◽  
pp. 65-72
Author(s):  
A Biswas ◽  
M M E Ahmed ◽  
T Halder ◽  
S Akter ◽  
R Yasmeen ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Loss ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Drastic Reduction ◽  
Rice Varieties ◽  
Planting Time ◽  
A Value ◽  
Severe Reduction

Photosensitive rice varieties have higher advantages in delayed planting. The present study was undertaken to figure out the degrees of delayed planting and evaluate the performance of six modern Aman rice varieties (BR11, BR22, BR23, BRRI dhan46, BRRI dhan54) against three sets of delayed planting. Each rice variety showed considerable variations for plant height, days to panicle initiation, flowering and maturity. BR22, BR23, and BRRI dhan54 showed a drastic reduction in days to panicle initiation and varied from 65 to 58 days, 69 to 60 days, and 62 to 55 days respectively, while it varied from 76 to 80 days for the control variety BR11. Similarly, days to flowering of BR22 and BRRI dhan54 showed a gradual decrease following different planting time and varied from 92 to 86 days, and 83 to 77 days respectively, while it varied from 109 to 107 days for the control variety BR11. For the above traits, BRRI dhan44 and BRRI dhan46 showed a moderate reduction depending on the three sets of planting time. Grain yield of BR22, BR23 reduced at the third set with a value ranging from 5.8 to 5.0 t/ha, 6.1 to 5.1 t/ha respectively, while BRRI dhan54 showed consistency in grain yield with a range from 5.3 to 5.2 t/ha. In contrast, grain yield of remaining rice varieties ranged between 5.7 to 4.5 t/ha for BRRI dhan46, 6.2 to 3.9 t/ha for BRRI dhan46 while severe reduction for the control variety BR11 with a range from 4.4 to 2.0 t/ha was observed. In conclusion, BRRI dhan54 was found more suitable rice variety in delayed planting compared with other photosensitive rice varieties. In future, BRRI dhan54 could be used as benchmark rice variety in a special rice breeding programme designed for delayed planting. Bangladesh Rice j. 2019, 23(1): 65-72

scholarly journals Genetic variability for grain yield and yield associated traits in transplant Aman rice (Oryza sativa L.)

2015 ◽  
Vol 2 (2) ◽  
pp. 207-213
Author(s):  
Mashtura Begum ◽  
Md Amir Hossain ◽  
Fakir Muhammad Munawar Hossain ◽  
Ahmed Khairul Hasan
Keyword(s):  
Grain Yield ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Crop Improvement ◽  
Genetic Advance ◽  
Improvement Program ◽  
Rice Varieties ◽  
Spad Value ◽  
Crop Varieties ◽  
Planting Materials

For any crop improvement program, it is imperative to assess the grain yield progress of the existing crop varieties to find the further avenue to out yield the existing superior ones. Therefore, an experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December 2013 to find out the genetic variation for grain yield and their associated traits of transplant Aman rice varieties. The experiment consisted of 11 varieties viz. Bashiraj, Binadhan-7, BR10, BR11, BR22, BR23, BRRIdhan32, BRRIdhan39, BRRIdhan49, BRRIdhan57 and IR64. The high yielding Bangladeshi varieties were selected based on their releasing year with a local and one exotic T. Aman rice varieties. Among the varieties, BR10 produced the highest grain yield (3.83 t ha-1). Binadhan-7 rice variety recorded the highest chlorophyll content (39.93 SPAD value) at 29DAT, (44 SPAD value) at 39 DAT and (47.30 SPAD value) at 49 DAT. The highest phenotypic (1491.81) and genotypic (1147.26) variances and genetic advance (61.19) were obtained from spikelets panicle-1 and this parameter had greater ability to increase yield. Among the traits, the highest heritability was recorded by effective tillers hill-1 (87.91%) which influenced the grain yield. Therefore, it may be concluded that the variety BR10 of transplant Aman rice produced maximum grain yield, spikelets panicle-1, showed high phenotypic and genotypic variances and genetic advance. Bashiraj, BRRIdhan49 and BRRIdhan57 also can be considered as planting materials as their yield performance is close to BR 10. Therefore, the findings of the present study will help the breeders for further yield improvement of rice.Res. Agric., Livest. Fish.2(2): 207-213, August 2015

Pengaruh Pengelolaan Hara NPK Terhadap Ketersediaan N Dan Hasil Tanaman Padi Sawah (Oryza Sativa L.) Di Desa Waelo Kecamatan Waeapo Kabupaten Buru

Agrologia ◽  
2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Rudy Soplanit ◽  
Siti H Nukuhaly
Keyword(s):  
Grain Yield ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
Block Design ◽  
Fertilizer Application ◽  
N Fertilizer ◽  
Soil Reaction ◽  
Rice Varieties ◽  
N Content ◽  
Leaf N Content

This study was conducted in Waelo Village, Waeapo Subdistrict, Buru District, with the objectives to determine N fertilizer application timing to increase rice yield and to understand the response of two rice varieties commonly grown in Waeapo. The experimental method used in this study was a Randomized Complete Block Design, with several fertilization treatments (NPK, NK,NP, PK and control), and rice varieties (Membramo and Mekongga), and with three replications. The results showed that administration of N fertilizer (NP, NK, NPK) gave significant effects on plant height, leaf color, full grain number per panicle, 1000 grain weight, dry grain yield, soil N content and leaf N content;  meanwhile it did not affect soil reaction (pH). A low rice yield was obtained in the treatment without N fertilizer, with 2.50 kg dry grain yield per plot and PK treatment with 2.78 kg  dry grain yield per plot.

scholarly journals Respons Beberapa Varietas Padi (Oryza sativa L.) terhadap Wereng Batang Coklat (Nilaparvata lugens Stall) Koloni Karawang

Agrikultura ◽  
2018 ◽  
Vol 29 (2) ◽  
pp. 73
Author(s):  
Dedi Darmadi ◽  
Tuti Alawiyah
Keyword(s):  
Oryza Sativa ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Test Method ◽  
Rice Varieties ◽  
Directorate General ◽  
Population Origin

ABSTRACTResponse of rice varieties (Oryza sativa L.) to brown planthopper (Nilaparvata lugens Stall) of Karawang coloniesThe research was conducted to determine the resistant level of several rice varieties (Oryza sativa L.) against brown planthopper (Nilaparvata lugens Stall) Karawang colony. The experiment was done at the Entomology Laboratory of Pest Forcesting Institute, Jatisari, Directorate General of Food Crops, Ministry of Agriculture. It was conducted from February to June 2017. The resistant of rice varieties against brown planthopper was tested using honey dew test method with bromocressol green as indicator. Honey dew test method is one of methods to evaluate rice variety reaction against brown planthopper population origin of certain area. This is due to the production of honey dew by brown planthopper which positively correlated with the amount of liquid being drawn from the plant. This study used Duncan Test on 5% level. The result demonstrated the variation of rice resistant against brown planthopper based on the area of honey dew spot, brown planthover mortality, attacks intensity, the destruction level on plant, and the rice yield. Inpari 13 was the most toleranct rice variety against the infestation of brown planthopper of Karawang colony.Keywords: Brown planthopper, Honey dew, Paddy, Resistance, VarietiesABSTRAKPenelitian ini bertujuan untuk menilai tingkat ketahanan varietas padi (Oryza sativa L.) terhadap wereng batang coklat (Nilaparvata lugens Stall) koloni Karawang. Penilitian dilaksanakan di Laboratorium Entomologi Balai Besar Peramalan Organisme Pengganggu Tumbuhan (BBPOPT) Jatisari, Direktorat Jenderal Tanaman Pangan, Kementerian Pertanian. Penelitian berlangsung dari Bulan Februari sampai Bulan Juni 2017. Pengujian ketahanan varietas padi terhadap wereng batang coklat dilakukan dengan menggunakan metode uji embun madu (honeydew test) dengan memakai indicator bromocressol green. Metode uji embun madu merupakan salah satu metode untuk mengevaluasi reaksi suatu varietas terhadap populasi wereng batang coklat yang berkembang di suatu wilayah tertentu, karena jumlah embun madu yang dikeluarkan oleh wereng batang coklat mempunyai hubungan yang positif dengan jumlah cairan tanaman yang dihisap. Uji lanjut yang digunakan adalah uji lanjut Duncan pada taraf 5%. Hasil penelitian menunjukkan terdapat variasi ketahanan antar varietas padi yang diuji dilihat dari luas bercak embun madu yang dihasilkan pada masing-masing varietas padi, mortalitas wereng batang coklat, intensitas serangan, tingkat kerusakan tanaman, dan bobot hasil panen padi. BErdasarkan parameter tersebut di atas, Inpari 33 merupakan varietas padi yang tahan terhadap serangan wereng batang coklat koloni Karawang.Kata kunci : Embun madu, Ketahanan, Padi, Varietas, Wereng batang coklat

Assessment of genetic variability for quantitative characters in rice (Oryza sativa L.) under post flood situation in sali

2021 ◽  
Vol 58 (1) ◽  
pp. 43-48
Author(s):  
Dalibha Pathak ◽  
Umesh Ch. Kalita
Keyword(s):  
Grain Yield ◽  
Coefficient Of Variation ◽  
Quantitative Traits ◽  
Oryza Sativa L ◽  
Block Design ◽  
Genetic Advance ◽  
Spikelet Sterility ◽  
Rice Varieties ◽  
Randomized Block Design ◽  
Spikelets Per Panicle

Sixteen genotypes of rice (including one check) were evaluated on 18 quantitative traits during sali (August), 2018 in a randomized block design with three replications at Instruction cum Research Farm, Department of Plant Breeding and Genetics, Assam Agricultural University, Jorhat to study the nature and magnitude of variability, heritability and genetic advance under delayed sown condition. The analysis of variance for 18 quantitative traits revealed the presence of significant differences for grain yield and its component characters. The highest genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) was observed for chaffs per panicle followed by grains per panicle, spikelet sterility (%), spikelets per panicle, grain yield (kg/ha). A high heritability coupled with high genetic advance was observed for plant height (cm), spikelets per panicle, spikelet sterility (%), chaffs per panicle, grains per panicle, grain yield (g/hill), grain yield (kg/ha), biological yield (kg/ha), straw weight (kg/ha) and harvest index (%) indicating that selection might be effective for improvement of these characters under delayed sown condition with low input. From the findings of this investigation, one genotype viz., Gandhari emerged as the outstanding genotype which yielded 4170 kg/ha and could be directly used for cultivation in delayed sown situation with low inputs. Some other promising genotypes that yielded higher than the check Manoharsali under delayed sown condition were JR 29, JR 16, Basundhara and JR 60 and could be utilized as potential parental material in the hybridization programmes designed to develop suitable rice varieties for delayed sown situation.

scholarly journals Studies on Potential of Different Dates of Sowing and Varieties on Productivity of Aerobic Rice in Assam

2020 ◽  
pp. 557-565
Author(s):  
Bidisha Borah ◽  
Kalyan Pathak
Keyword(s):  
Grain Yield ◽  
Rice Variety ◽  
Canopy Temperature ◽  
Index Number ◽  
Dry Matter Accumulation ◽  
Rice Varieties ◽  
Area Index ◽  
Main Plot ◽  
Positive Effect ◽  
Plot Design

An investigation was carried out to determine an optimum micro-climate regimes for different promising varieties of rice for realizing higher yields under aerobic conditions. A field experiment was conducted in the Instructional Cum Research (ICR) Farm of Assam Agricultural University, Jorhat, Assam during autumn season of 2017. The experiment was laid out in a split-plot design with three replications. The treatments consisted of four micro-climatic regimes (M) in main plot viz., sowing of seed on 15th February (M1), 1st March (M2), 16th March (M3) and 1st April (M4) along with four different rice varieties (V) viz., CR-Dhan 205 (V1), CR-Dhan 203 (V2), CR-Dhan 204 (V3) and Inglongkiri (V4) in sub plot. The results of the experiment revealed that among the different micro-climatic regimes, the micro-climate associated with 1st April recorded positive effect on micro-climate related and yield parameters in terms of canopy temperature, light intensity, soil moister content, soil temperature, dry matter accumulation, leaf area index, number of effective tillers and grain yield (3004 kg/ha), followed by the micro-climate associated with 16th March sown crop. Among the varieties evaluated, CR-Dhan 203 recorded the highest value in terms of number of effective tillers (187/m2) followed by Inglongkiri, CR-Dhan 204 and CR-Dhan 205. The highest grain yield of 2860 kg/ha recorded in rice variety CR-Dhan 203 was significantly superior to that of other varieties except Inglongkiri. In terms of economics, the crop sown on 1st April recorded the highest net return (INR 51755 /ha) and B:C ratio (2.30) which was found to be the greatest.

scholarly journals INSIDENSI PENGGEREK BATANG PADI KUNING (Schirpophaga incertulas Walker) PADA TIGA VARIETAS PADI : KASUS DI DESA KEMUMU BENGKULU UTARA

2018 ◽  
Vol 20 (2) ◽  
pp. 40-45
Author(s):  
Irma Cahyoko ◽  
Dwinardi Apriyanto ◽  
Kanang S. Hindarto
Keyword(s):  
Grain Yield ◽  
Rice Field ◽  
Yield Loss ◽  
Stem Borer ◽  
Egg Mass ◽  
Cumulative Number ◽  
Large Area ◽  
Rice Varieties ◽  
Yellow Stem Borer ◽  
Significant Difference

[INCIDENCE OF THE RICE YELLOW STEM BORER (Schirpophaga incertulas Walker) ON THREE RICE VARIETIES IN KEMUMU, NORTH BENGKULU]. Rice yellow stem borer (RYSB), Schirpophaga incertulas Walker, often causes yield loss in irrigated rice field. Dead heard and white ear head are the common symptomps resulted from the larval damage. The use of resistant varieties may reduce the risk of yield loss, but the resistance may lose quickly as the varieties are continually grown in a large area. The assessment of the insect incidence in rice field is necessary in order to determine the status of the pest for certain period of time. The objective of the study was to determine the incidence and damage incurred by RYSB in three rice varieties, Mekongga, Cibogo, and Situ Bagendit at farmer rice fields. A survey was conducted in December 2017-February 2018 in Kemumu, North Bengkulu Regency. Observation of RYSB was made on randomly selected 30 hills from + 1 ha area for each variety that was located adjacent to each other. Grain yield was measured from the sampled hills and from 3 plots of 9 m2 . Weight of 1000 grain was measured from grain of three sampled hills. The results revealed that the incidence of RYSB was low, as indicated by the presence of egg mass and larvae of RYSB, and no significant difference was found among the three varieties. Nevertheless, the average cumulative number and percentage of dead heart and white ear head was significantly lower in Mekongga than those of Cibogo and Situ Bagendit. In term of grain yield, however, Mekongga outperformed the other two varieties. The low incidence of RYSB might suggest that growing different variety practiced by local farmers was able to suppress pest population, and therefore it should be implemented in all main areas of rice production.

Response of rice varieties to different sowing windows under Konkan conditions

2017 ◽  
Author(s):  
D. N. Jagtap ◽  
U. V. Mahadkar ◽  
S. A. Chavan
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Rice Variety ◽  
Rice Crop ◽  
Economic Returns ◽  
Rice Varieties ◽  
Straw Yield ◽  
Long Duration ◽  
Main Plot ◽  
Plot Design

A field experiment was conducted during kharif season 2015-16 to study the response of rice varieties to different sowing windows under Konkan conditions. The experiment was laid out in split plot design with three replications. The main plot treatments were three sowing windows, viz., 23rd Met Week, 24th Met Week, 25thMet Week. The sub plot treatments comprised five rice varietiesviz., Karjat-5, Palghar-1, Jaya, Swarna and Karjat-2. Thus there were 45 treatment combinations. Results revealed that rice crop sown on 23rd Met. Week recorded significantly higher grain yield (5782 kg ha-1) and straw yield (6462 kg ha-1). Long duration rice variety Swarna recorded the maximum grain yield (5782 kg ha-1) as well as straw yield (6462 kg ha-1), which was significantly higher over all other varieties under study except variety Jaya which was at par. From the present investigation it can be concluded that kharif rice in Konkan be sown during 23rd meteorological week with rice variety Swarna followed by conventional variety Jaya, so as to obtain higher yield and economic returns

scholarly journals Rajdeep (IET 17713): A New Rainfed Lowland High Yielding Rice Variety for Semideep Situation

2021 ◽  
Author(s):  
Indrani Dana ◽  
Sitesh Chatterjee
Keyword(s):  
West Bengal ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
National Level ◽  
Stem Borer ◽  
Research Station ◽  
Wet Season ◽  
Rice Varieties ◽  
Improvement Project

In eastern India, more than 13.0 million ha of rice lands are affected by excess water and periodically suffer from flash floods and complete submergence. Most of the traditional and adapted rice varieties of this situation are low yielders. To overcome these problems the high yielding rice variety (HYV), Rajdeep (IET 17713) has been developed by Rice Research Station, Government of West Bengal, Chinsurah, Hooghly as high yielding rice variety for semideep water situation. Field experiment was conducted to evaluate the performance of promising semideep water rice (Oryza sativa L.) genotypes under lowland situation during wet season of 2002-2013. Performance of Rajdeep, semideep water rice was better and therefore it was released. It is tolerant to sheath blight, sheath rot diseases and stem borer, leaf folder insect-pests. The high yielding semideep rice variety, Rajdeep exhibited superiority over national check (Sabita), regional check (Purnendu) and local check tested in different locations under All India Coordinated Rice Improvement Project (AICRIP) trials during kharif, 2002-2003 conducted by ICAR-Indian Institute of Rice Research, Hyderabed, India. This variety was also tested in multi-locational yield trials (2003-2013) along with check variety Swarna-Sub 1/ Bhudeb at different locations of West Bengal. After testing at national level as well as at state level, based on yield performance of the variety, the HYV semideep rice variety Rajdeep was released and notified by Government of India in the Gazette of India vide Notification No. S.O. 1007(E) on 30th March, 2017.

scholarly journals Screening and evaluation of upland rice (Oryza sativa L.) varieties in inundated soil

2018 ◽  
Vol 51 (2) ◽  
pp. 63-69
Author(s):  
Sunday Ojo Adigbo ◽  
Philip Joseph Osadebay ◽  
Innocent Iseghohi ◽  
Cornelius Idowu Alarima ◽  
Nnennaya Ogechi Agbenin ◽  
...  
Keyword(s):  
Upland Rice ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Rice Varieties ◽  
Inland Valley ◽  
Short Period ◽  
Maturity Period ◽  
Vigorous Growth ◽  
Number Of Leaves ◽  
Screen House

Abstract Poor germination and subsequent low grain yield of dry seeded upland rice in the existing anaerobic and short niche between lowland rice and dry season crops in the inland valley necessitate the screening of 19 rice varieties. The identification of vigorous growth and short duration upland rice variety in anaerobic condition would optimize this niche. The potted experiment was carried out in the screen house of the Department of Crop Science and Horticulture, Federal University Oye-Ekiti, Ikole campus in 2015 to screen and evaluate the performance of upland rice varieties in inundated soils with a view to selecting the suitable variety or varieties that will fit into the existing niche in the inland valley. The experiment was laid in a complete randomization design and replicated three times. The number of leaves, biomass and grain weight plant−1 of the varieties were significantly (P ≤ 0.05 %) different. The number of tillers observed in WAB 56-104, NERICA 4, NERICA 6, NERICA 3, NERICA 5, NERICA 10, NERICA 9, ARICA 4 NERICA 1, FARO 63, FARO 65 and NERICA 8 varieties were significantly (P < 0.05) lower than those of Igbemo varieties. The numbers of days to 50 % flowering of NERICA 1, NERICA 2, NERICA 10, NERICA 5, NERICA 9, NERICA 3, NERICA 7, NERICA 8, ARICA 4 and WAB 56-104 varieties were the lowest. Although Igbemo brown, Igbemo white varieties had the highest grain yields per plant, their maturity period exceeded the short period. Thus, NERICA 2 and NERICA 5 varieties which had lower number of days to flowering could be considered as candidate varieties that can be optimized in the niche in question.

scholarly journals Identification of fgr gene and preliminary evaluation for agronomic traits of pandan sticky rice variety (Oryza sativa L.)

2019 ◽  
Vol 02 ◽  
pp. 39-48
Author(s):  
Toan D. Pham
Keyword(s):  
Oryza Sativa ◽  
Agronomic Traits ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Rice Production ◽  
Molecular Techniques ◽  
High Yield ◽  
Preliminary Evaluation ◽  
Rice Varieties ◽  
Fgr Gene

Rice (Oryza sativa L.) is the most important food crop in Vietnam particularly in the Mekong Delta. Screening of good quality and high yield rice varieties are needed for rice production in Vietnam. The purpose of this study was to use molecular techniques to identify fgr gene and to evaluate preliminarily agronomic traits of pandan sticky rice variety. The results showed that this variety contained fgr gene. The fragrant allele was amplified by ESP - IFAP primers with a product of 255 bp in size. Similarly, evaluation of agronomic traits showed that the pandan sticky rice variety displayed many desirable characteristics such as plant height of 108 cm, panicle length of 25.6 cm, seed/panicle 135, 100-grain weight 2.07 g, pandan smell, level 2 of alkali digestion, gel consistency 93 mm. These results were useful information and could be applied for improving and providing pandan sticky rice variety for rice production.

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