scholarly journals Effect of different doses of herbicides on yield attributes and grain yield of dry seeded rice (Oryza sativa L.)

2013 ◽  
Vol 4 (7) ◽  
pp. 94-96
Author(s):  
Ahmed Bahar
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Yield Attributes ◽  
Different Doses

scholarly journals Effect of dates and methods of winter rice (Oryza sativa L.) transplanting on relayed niger (Guizotia abyssinica) and soil health

2019 ◽  
Author(s):  
Anju Mala Deka ◽  
P. C. Bora ◽  
H. Kalita ◽  
A. S.N. Zaman ◽  
Pompi Saikia
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Conventional Method ◽  
Oryza Sativa L ◽  
Rice Cultivation ◽  
System Of Rice Intensification ◽  
Guizotia Abyssinica ◽  
Relay System ◽  
Yield Attributes ◽  
Available N

A field experiment was conducted to study the effect of dates of transplanting under different methods of cultivation on productivity of winter rice (Oryza sativa L.) and their effect on rice-niger (Guizotia abyssinica) relay system at Regional Agricultural Research Station, Shillongani Nagaon, Assam during kharif-rabi seasons in the year 2014-15 and 2015-16. Rice transplanted on 20 June recorded significantly higher yield attributes and grain yield of rice (59.19 q/ha) as compared to the later dates of transplanting, and it was followed by 5 July- transplanted rice. Transplanting on 20 June resulted in higher values in respect of yield attributes, yield of relayed niger, rice equivalent yield (REY) of rice- niger relay system (75.68 q/ha), NPK uptake by rice and niger as well as soil fungal and bacterial population after harvest of rice and niger. System of Rice Intensification (SRI) recorded significantly higher value of yield attributes and grain yield of rice (60.34q/ha) as compared to conventional method. In case of relayed niger, yield attributes, seed yield and REY were found higher under SRI method of rice cultivation. Under SRI method, higher uptake of NPK by rice and niger and higher soil fungal and bacterial populations after harvest of rice and niger were observed as compared to conventional method. However, conventional method of rice cultivation recorded significantly higher values of soil available N, P2O5 and K2O content at the end of two year-crop cycle over that of SRI.

scholarly journals Grain yield and yield attributes response of four upland rice (Oryza sativa L.) promising lines to shade stress

2020 ◽  
Vol 454 ◽  
pp. 012188
Author(s):  
G R Sadimantara ◽  
E Febrianti ◽  
N W S Suliartini ◽  
G A K Sutariati ◽  
D N Yusuf ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Yield Attributes

scholarly journals Effect of Delayed Time of Planting on Grain Yield and Agro-morphological Traits of Elite Rice (Oryza sativa L.) Varieties

2021 ◽  
pp. 68-79
Author(s):  
Santrupta Manmath Satapathy ◽  
V. K. Srivastava ◽  
Prasanta Kumar Majhi ◽  
Suraj Gond
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Morphological Traits ◽  
Agricultural Research ◽  
Oryza Sativa L ◽  
Uttar Pradesh ◽  
Rice Varieties ◽  
Yield Attributes ◽  
Main Plot ◽  
Delayed Time

Aims: The present investigation entitled “Effect of delayed time of planting on Yield and Agro-morphological traits of different Rice (Oryza sativa L.) Varieties” was conducted to estimate the grain yield performance of different rice varieties under delayed planting conditions in Varanasi region of Uttar Pradesh, India. Study Design: The experiment was laid in a Split plot design with three replications, consists of four elite rice varieties (HUR-3022, DRR-44, HUR-4-3, and HUR-105) as sub plot factor and three dates of planting (05/09/2018, 13/08/2018 and 20/08/2018) as main plot factor. Hence a total number of 12 treatments were allotted in the whole design. Place and Duration of Study: The field trial was conducted during Kharif-2018 at Agricultural research farm under Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh. Methodology: Materials for the studies consist of four elite rice varieties (V1- HUR-3022, V2- DRR-44, V3- HUR-4-3, and V4- HUR-105) as sub plot factor and three dates of planting (D1- 05/09/2018, D2- 13/08/2018 and D3- 20/08/2018) as main plot factor. The biometric observations were taken from the field at a regular interval of 30, 60 and 90 days after planting (DAP) and during crop harvest. The yield attributes were recorded before, during and after harvest of the crop as per the need. Results: The variety DRR-44 was found to be a best performer on planting date 06.08.2018 and recorded significantly higher yield of 3.8 t/ha followed by HUR-3022 (2.4 t/ha) and HUR-105 (1.64 t/ha). Conclusion: Rice varieties sown in the field showed highest grain yield when sown on 6th August as compared to 13th and 20th August. As the dates of planting delayed crop yield subsequently decreased. Higher yield level in rice can be confirmed by adjusting the planting dates with the proper climatic conditions. So that the crop phenology can coincide with the suitable weather condition to boost the photosynthetic efficiency and ultimately increase the grain yield.

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.

Correlation Studies on Grain Yield and its Component Traits in Rice (Oryza sativa L.)

2012 ◽  
Vol 2 (11) ◽  
pp. 13-14
Author(s):  
R. ARULMOZHI R. ARULMOZHI ◽  
◽  
Dr. A. MUTHUSWAMY Dr. A. MUTHUSWAMY
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Correlation Studies ◽  
Component Traits

scholarly journals Seed Priming with Potassium Nitrate and Gibberellic Acid Enhances the Performance of Dry Direct Seeded Rice (Oryza sativa L.) in North-Western India

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 849
Author(s):  
Buta Singh Dhillon ◽  
Virender Kumar ◽  
Pardeep Sagwal ◽  
Navjyot Kaur ◽  
Gurjit Singh Mangat ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
Growth And Yield ◽  
Western India ◽  
Yield Attributes ◽  
Crop Establishment ◽  
Direct Seeded

Poor early growth and uneven crop establishment are reported as the major bottlenecks in wide-scale adoption and optimal yield realization of dry direct-seeded rice (DSR). Seed priming can potentially help overcome these problems in DSR. Therefore, laboratory and field studies were conducted at Punjab Agricultural University, Ludhiana, India, during kharif/wet-season 2018 and 2019 to evaluate the effect of different priming techniques on germination, establishment, growth, and grain yield of rice under DSR conditions. The following priming treatments were evaluated: dry non-primed seed (control), hydropriming with distilled water, halopriming with 2.0% potassium nitrate, hormopriming with 50 ppm gibberellic acid (GA3), and osmopriming with polyethylene glycol (PEG)(−0.6 MPa), each with 12 and 24 h priming duration. In 2019, priming treatments were tested under two DSR establishment methods—conventional DSR (sowing in dry soil followed by irrigation) and soil mulch DSR (locally known as vattar DSR) (sowing in moist soil after pre-sowing irrigation), whereas in 2018, priming treatments were evaluated under conventional DSR only. In both years, halopriming and hormopriming resulted in a 7–11% increase in rice yields compared to non-primed dry seed (control). Osmopriming resulted in a 4% yield increase compared to control in 2018 but not in 2019. The higher yields in halopriming and hormopriming were attributed to higher and rapid germination/crop emergence, better root growth, and improvement in yield attributes. Priming effect on crop emergence, growth, and yield did not differ by DSR establishment methods and duration of priming. Conventional DSR and soil mulch DSR did not differ in grain yield, whereas they differed in crop emergence, growth, and yield attributes. These results suggest that halopriming with 2.0% potassium nitrate and hormopriming with 50 ppm GA3 has good potential to improve crop establishment and yield of rice in both conventional and soil mulch DSR systems.

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