scholarly journals Response of Medium and Long Duration Boro Rice Variety (Oryza sativa L.) to Nitrogen Fertilizer

2017 ◽  
Vol 14 (2) ◽  
pp. 48-60
Author(s):  
Amina Khatun ◽  
M K Quais ◽  
A A Begum ◽  
M A Saleque ◽  
M S U Bhuiya
Keyword(s):  
Oryza Sativa ◽  
Field Experiment ◽  
Grain Yield ◽  
Nitrogen Fertilizer ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Grain Yields ◽  
Long Duration ◽  
N Rates ◽  
Boro Rice

A field experiment was conducted during November 2009-April 2010 in Bangladesh Rice Research Institute, Bangladesh to examine the response of two rice (Oryza sativa L.) varieties (BRRIdhan28 and BRRI dhan29) to six N rates of nitrogen fertilizer viz. 0, 50, 100, 150, 200 and 250 kg ha-1. The experiment was conducted in a RCB design with three replications. Grain yields of both BRRI dhan28 and BRRI dhan29 increased significantly in a quadratic fashion with N rates. The highest grain yields were obtained from 150 kg N ha-1 in both the varieties. More than 1 t ha-1 yield was obtained in BRRI dhan29 (6.34 t ha-1) at the same rate of N indicated BRRI dhan29 as a nitrogen efficient variety. However, the predicted economic optimum doses of N appeared to be 156 and 158 kg ha-1 for BRRI dhan28 and BRRI dhan29, respectively. The grain yield was mainly influenced by the number of panicles per hill, which was found to increase with the increase of N rates in both the varieties. The Agriculturists 2016; 14(2) 48-60

scholarly journals Water and Nitrogen (N) Use Efficiency of Upland Rice (Oryza sativa L. × Oryza glaberrima Steud) under Varying N Application Rates

Nitrogen ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 151-166
Author(s):  
Isaac Newton Alou ◽  
Michael van der Laan ◽  
John George Annandale ◽  
Joachim Martin Steyn
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
N Uptake ◽  
Sub Saharan Africa ◽  
Oryza Glaberrima ◽  
Use Efficiency ◽  
N Rates

Upland rice (Oryza sativa L.) production systems in sub-Saharan Africa are faced with challenges of water stress and nitrogen (N) deficiency, which reduce grain yield, water use efficiency (WUE), and nitrogen use efficiency (NUE). The objective of the study was to determine the response of upland rice to N fertilizer rates under well-watered conditions and to clarify the relationships between WUE and NUE. Upland rice variety Nerica 10 was grown under well-watered conditions and varying N rates in 2014/2015 (Y1) and 2015/2016 (Y2) on the same field at the University of Pretoria’s Hatfield Experimental Farm, South Africa. Yields at harvest increased with increasing N rates, linearly in Y1, and following a quadratic trend in Y2. Mean grain yield was highest (4.5 t ha−1) at 120 kg N ha−1 and lowest (2.4 t ha−1) at 0 kg N ha−1. Agronomic NUE was lowest for 160 kg N ha−1 (11.7 kg kg−1 N), while WUE was highest for the 120 kg N ha−1 (7.58 ± 1.7 kg mm−1) and lowest for 0 kg N ha−1 (4.1 ± 0.9 kg mm−1). Findings revealed that at high N levels, compensative N uptake during tillering can reduce harvest index, WUE, and to a lesser extent, grain N concentration.

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

Effect of LCC-based nitrogen application on growth and yieldof rice (Oryza sativa L.) varieties during dry season

2016 ◽  
Vol 51 (1) ◽  
Author(s):  
Shrabani Moharana ◽  
J.M. L. Gulati ◽  
S. N. Jena
Keyword(s):  
Oryza Sativa ◽  
Field Experiment ◽  
Grain Yield ◽  
Real Time ◽  
Oryza Sativa L ◽  
Threshold Value ◽  
Nitrogen Management ◽  
Nitrogen Application ◽  
Panicle Length ◽  
Straw Yield

Data from a field experiment on Real Time Nitrogen Management (RTNM) in rice revealed that variety Gobinda produced significantly the highest grain yield of 49.6 q ha-1 associated with long panicle (26.75 cm) bearing significantly the maximum number of filled grains panicle-1 (156.78) producing highest net return (Rs.33214.71), B-C ratio (1.83) and return per rupee invested (0.83). Application of nitrogen based on LCC threshold value 4 produced significantly the highest grain (52.6 q ha-1), straw yield (64.4 q ha-1), number of EBT m-2 (403.71), panicle length (25.43 cm) and 148.94 filled grain panicle-1. Variety x RTNM interaction was significant and variety Naveen and Gobinda produced significantly the highest yield of 55.4 and 58.2 q ha-1 at recommended of nitrogen whereas, Lalat and Hiranmayee responded to LCC threshold value 4 (N4) with grain yield of 50.4 and 52.1 q ha-1, respectively.

scholarly journals Alleviation of arsenic accumulation in rice by applying silicon-rich rice husk residues in Bangladesh soil

2021 ◽  
Vol 56 (3) ◽  
pp. 195-206
Author(s):  
A Mamud ◽  
B Saha ◽  
SA Hossain ◽  
MTA Chowdhury
Keyword(s):  
Oryza Sativa ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
The Holocene ◽  
Arsenic Accumulation ◽  
Calcium Phosphorus ◽  
Boro Rice ◽  
Different Soils

While the accumulation of arsenic in rice (Oryza sativa L.) has been highlighted as a major concern in Bangladesh, sustainable measures are critically needed to reduce the uptake of arsenic by rice plants. In the present study, a pot-experiment was conducted using a Boro rice variety (BRRI dhan-29) in two geomorphologically different soils from Holocene floodplains and Pleistocene terraces, in which silicon-rich fresh rice husk (FRH) and rice husk ash (RHA) were applied, as silicon fertilisers, in the soils at the rate of 1% (w/w) of rice residue:soil.In the Holocene floodplain soils, the application of FRH was found to decrease arsenic in grain, husk and straw by 42, 56 and 51%, respectively, whereas the soil incorporation of RHA decreased arsenic in grain, husk and straw by 26, 37.5 and 36%, respectively. In the Pleistocene terrace soils, the application of FRH reduced the grain, husk and straw arsenic by 38, 38 and 44%, respectively, whereas the RHA decreased the grain, husk and straw arsenic by 26, 30 and 29%, respectively. Fresh rice husk was found to be more effective in alleviating arsenic accumulation in rice than RHA. In both the Holocene floodplain and Pleistocene terrace soils, the grain concentrations of calcium, phosphorus, silicon, and zinc were found to be increased with the decrease of arsenic in the grain due to the use of FRH and RHA. The present study suggests that silicon-rich rice husk residue scan be used as silicon fertilisers to reduce arsenic accumulation in rice in Bangladesh. Bangladesh J. Sci. Ind. Res.56(3), 195-206, 2021

scholarly journals Evaluation of Aus Rice (Oryza sativa L.) Production in Less Irrigated Situation in Northern Region of Bangladesh

2017 ◽  
Vol 15 (1) ◽  
pp. 110-115
Author(s):  
M Sh. Islam ◽  
ABM Zahid Hossain ◽  
MS Miah ◽  
SM Shahriar ◽  
MAA Mamun
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Ground Water ◽  
Irrigation Water ◽  
Rice Variety ◽  
Northern Region ◽  
Dry Season ◽  
Rice Cultivation ◽  
Growth Duration ◽  
Grain Yields

Twenty one demonstrations and two validation trials were carried out at the farmers’ field in  the northern region of  Bangladesh  during 2014 using Aus rice: variety BRRI dhan48 to enhance Aus (pre-monsoon) rice cultivation. Grain yields of 3.5 to 6.5 t ha-1 were obtained from demonstrations plots conducted in different farmers’ field. The validation trial was conducted in the farmers’ field at Mithapukur and Nilphamari Sadar Upazillas using BRRI dhan28 and BRRI dhan48 as Braus (rice grown between Boro and Aus season) after harvesting potato. Grain yield of about 5.0 t ha-1 was obtained from the rice variety BRRI dhan28, while 6.6 t ha-1 was obtained from BRRI dhan48. BRRI dhan48, due to its shorter growth duration (100-105 days) required 2-3 less irrigations. About 28-36% less irrigation water was required during dry season when BRRI dhan48 was used as Braus instead of BRRI dhan28 as a Boro crop. About  20 to 60% higher grain yield was observed in different farmers’ field with BRRI dhan48 over BRRI dhan28, which indicated  that BRRI dhan48 is a  potential rice variety during  Aus or Braus season. BRRI dhan48 can be cultivated after Boro harvest or as Braus after potato harvest. The variety could also decrease the pressure on ground water utilization for rice cultivation during dry season. The Agriculturists 2017; 15(1) 110-115

scholarly journals Effect of Plant Densities on Yield Potential of Nerica 10 Rice Variety (Oryza sativa L.) In Taita Taveta County

2021 ◽  
pp. 40-46
Author(s):  
Leah Andisi Akula ◽  
Esther Mwende Muindi ◽  
Lenard Gichana Mounde ◽  
Mwamburi Mcharo
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Block Design ◽  
Rice Variety ◽  
Yield Potential ◽  
Seeding Rate ◽  
Rain Season ◽  
Plant Densities ◽  
Yield Maximization

Rice (Oryza sativa L.), is an important cereal crop grown within central, western and coast region of Kenya. Despite annual rice consumption being higher than maize (Kenya’s staple food), the country is unable to meet an annual demand of 0.55 million tons and depends on imports to fill a 73% deficit. In order to contribute to reducing the deficit gap, a field experiment was conducted at Dembwa and Kipusi, Taita Taveta County in Kenya during the 2019 long rain season to find out the effect of spacing and seeding rate on performance of New Rice for Africa (Nerica) 10 rice variety. Three spacings 30 cm x 15 cm (control), 20 cm x 15 cm and 20 cm x 10 cm and four seedrates drill (random seed placement in small groove/line), 1, 2, or 3 seedling(qs) per hill were used. The experiment was laid out in a randomized complete block design, factorial arrangement with three replications. Results showed that the interaction between 20 cm x 10 cm spacing at single seedling per hill significantly (p ≤ 0.05) increased grain yield by 58%, dry biomass by 33% and harvest index by 45% compared to 20 cm x 15 cm and 30 cm x 15cm (control). These results suggest that interaction between 20 cm x 10 cm spacing at 1(one) seedling per hill is the best for Nerica 10 grain yield maximization in Taita Taveta County. The current investigation is among preliminary studies on Nerica 10 rice variety in the county. Therefore, there is need for long term trials in various agro environments in the County.

scholarly journals Effect of Arsenic Amended Irrigation Water on Growth and Yield of BR-11 Rice (Oryza sativa L.) Grown in Open Field Gangetic Soil Condition in Rajshahi

2012 ◽  
Vol 5 (1) ◽  
pp. 55-59 ◽  
Author(s):  
MAK Azad ◽  
AHMFK Mondal ◽  
MI Hossain ◽  
M Moniruzzaman
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Open Field ◽  
Irrigation Water ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Soil Condition ◽  
Growth And Yield ◽  
Control Treatment ◽  
Panicle Length

Rice was grown in an open-field Gangetic soil condition with arsenic amended irrigation water in experimental plot at Institute of Environmental Science of Rajshahi University to see the effect of arsenic (As) on growth and yield of rice (Oryza sativa L.). A popular aman rice variety named BR-11 was cultivated with arsenic amended irrigation water (0 mg, 0.1 mg, 0.5 mg, 1.0 mg, 2.0 mg and 4.0 mg/L As containing water) in a green house made of transparent poly-ethylene paper. Sodium arsenate (Na2HAsO4) was added to irrigation water for arsenic source. The tillers number, panicle length and grain yield of BR-11 rice were found to decrease significantly (p?0.05) with increase of arsenic (As) concentration in irrigation water. The highest values of plant height and straw yield was observed in 0.5 mgL-1 treatment, whereas highest tillers number, panicles number, panicle length and grain yield were found in control treatment. The lowest values of these parameters were observed in the treatment of 4.0 mgL-1 As containing irrigation water. Rice was grown in an open-field Gangetic soil condition with arsenic amended irrigation water in experimental plot at Institute of  Environmental Science of Rajshahi University to see the effect of arsenic (As) on growth and yield of rice (Oryza sativa L.). A popular aman rice variety named BR-11 was cultivated with arsenic amended irrigation water (0 mg, 0.1 mg, 0.5 mg, 1.0 mg, 2.0  mg and 4.0 mg/L As containing water) in a green house made of transparent poly-ethylene paper. Sodium arsenate (Na2HAsO4) was added to irrigation water for arsenic source. The tillers number, panicle length and grain yield of BR-11 rice were found to decrease significantly (p?0.05) with increase of arsenic (As) concentration in irrigation water. The highest values of plant height and straw yield was observed in 0.5 mgL-1 treatment, whereas highest tillers number, panicles number, panicle length and grain yield were found in control treatment. The lowest values of these parameters were observed in the treatment of 4.0 mgL-1 As containing irrigation water.DOI: http://dx.doi.org/10.3329/jesnr.v5i1.11553J. Environ. Sci. & Natural Resources, 5(1): 55-59, 2012

scholarly journals Effect of nitrogen fertilizer source on grain yield and nitrogen use efficiency in rice (Oryza sativa L.) cv. Shiroudi

2019 ◽  
Vol 21 (1) ◽  
pp. 82-95
Author(s):  
Mohammad Mohammadian ◽  
Ali Reza Astaraie ◽  
Amir Lakzian ◽  
Hojat Emami ◽  
Masoud Kavoosi ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilizer ◽  
Oryza Sativa L ◽  
Nitrogen Use ◽  
Use Efficiency

Efficacy of some insecticide modules against major insect pests and spider population of rice, Oryza sativa L.

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 257-262
Author(s):  
Atanu Seni ◽  
Bhimasen Naik
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Untreated Control ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Stem Borer ◽  
The Other ◽  
The Third ◽  
Treated Plot

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

Sign in / Sign up

Export Citation Format

Share Document