The role of potassium solubilizing bacteria (KSB) inoculations on grain yield, dry matter remobilization and translocation in rice (Oryza sativa L.)

2019 ◽  
Vol 42 (10) ◽  
pp. 1165-1179 ◽  
Author(s):  
Mohammad Yaghoubi Khanghahi ◽  
Hemmatollah Pirdashti ◽  
Heshmatollah Rahimian ◽  
Ghorbanali Nematzadeh ◽  
Mehdi Ghajar Sepanlou
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Dry Matter ◽  
Oryza Sativa L ◽  
Potassium Solubilizing Bacteria

scholarly journals Productivity and nutrient use efficiency of hybrid rice (Oryza sativa L.) in response to integrated use of organic and inorganic sources of nutrients

2021 ◽  
Vol 17 (2) ◽  
pp. 390-403
Author(s):  
Dinesh Pandey ◽  
Anjum Ahmad ◽  
J.K. Chauhan ◽  
N. Pandey
Keyword(s):  
Growth Rate ◽  
Oryza Sativa ◽  
Grain Yield ◽  
Dry Matter ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Inorganic Fertilizer ◽  
Nutrient Use ◽  
Use Efficiency

An experiment was carried out during the Kharif 2002 and 2003, to study the productivity and nutrient use efficiency of hybrid rice (Oryza sativa L.) in response to integrated use of organic and inorganic sources of nutrients at Research farm, IGAU, Raipur (CG). In all 12 treatments, comprising of different N, P and K levels and its conjunction with organic fertilizers were laid out in Randomized Block Design with 3 replications. The results revealed that application of inorganic fertilizer level of 150:80:60 kg NPK ha-1 significantly increased number of active leaf, leaf area, leaf area index and dry matter accumulation at later stages as compared to lower level of inorganic fertilizer. The conjunction of 100:60:40 kg NPK ha-1 along with PM or N blended with CDU found to be equally effective to that of inorganic fertilizer level of 150:80:60 kg NPK ha-1 for above growth parameters. The chlorophyll content during crop period under above level was the highest under said treatment. The highest crop growth rate was observed between 60-90 DAT followed by 90 DAT-harvest and 30-60 DAT, respectively. The per day accumulation of dry matter during 60-90 DAT period was almost three to four times of that accumulated during 30-60 DAT. Thereafter growth rate almost declined till maturity during both the years.The increased concentration of N at different growth stages and its uptake by plant helped in increasing the yield components and grain yield. The critical analysis of grain yield observations revealed that conjunction of lower levels of inorganic fertilizer (100:60:40 or 50:30:20 kg NPK ha-1) along with CDU or PM gave the saving of 50 kg N, 20 kg P and 20 kg K ha-1 for the cultivation of hybrid rice. Moreover, the higher buildup of available N and K has been also observed under said combination of organic and inorganic fertilizer treatments. The application of 150:80:60 kg NPK ha-1 along with PSB gave the highest buildup of available phosphorus. Inorganic level of 150:80:60 kg NPK ha-1 gave the highest production efficiency and productivity rating index, which was followed by application of inorganic fertilizer of 100:60:40 kg NPK ha-1 along with PM and blending of N with CDU, respectively. The application inorganic fertilizer of 50:30:20 kg NPK ha-1 + PM gave the highest nutrient efficiency during both the years. The highest input cost, net profit and per rupee investment was found under 150:80:60 kg NPK ha-1 followed by application of 100:60:40 kg NPK ha-1 along with PM.

Study on heterosis for yield and quality traits in rice (Oryza sativa L.)

2020 ◽  
Vol 57 (3) ◽  
pp. 190-198
Author(s):  
P Ramesh Babu ◽  
h Sreelakshmi C
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Mating System ◽  
Oryza Sativa L ◽  
Quality Traits ◽  
Predominant Role ◽  
Yield And Quality ◽  
Head Rice ◽  
Additive Component

To know the extent of heterosis among the selected 21 crosses derived from the diallel mating system using seven parents regarding yield and quality traits. The magnitude of heterosis was high for grain yield and protein content and moderate to high for plant height, ear bearing tillers per plant, number of primaries per panicle, L/B ratio, head rice recovery and GT score. The best heterotic crosses for grain yield were erramallelux NLR 33637 and IR 72 x NLR 33637. The high heterotic effects in the hybrids may be due to predominant role of non additive component in the inheritance of the characters studied.

scholarly journals Effect of heat stress on yield and economics of rice (Oryza sativa L.) cultivars under different sowing dates

2021 ◽  
Vol 23 (1) ◽  
pp. 38-45
Author(s):  
S.MOHAPATRA ◽  
S.K.TRIPATHY ◽  
A.K.MOHANTY ◽  
S.TRIPATHY
Keyword(s):  
Oryza Sativa ◽  
Heat Stress ◽  
Grain Yield ◽  
Temperature Stress ◽  
Dry Matter ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
Reproductive Growth ◽  
Sowing Dates ◽  
Use Efficiency

An experiment was carried out during rabi 2017-18 and 2018-19 at Regional Research and Technology Transfer Station, Chiplima, Sambalpur, Odisha of Odisha University of Agriculture and Technology to study the influence of temperature stress at different sowing dates to on yield attributing characters, yield and economics of rice (Oryza sativa L.) cultivars. Rice sown on 10th December utilizedmore thermal and heat units as compared to 30th December and 10th January sown crop. The differential yield response of cultivars to various sowing dates was found to be due to their differential tolerance against high temperature at reproductive growth phase. On an average, 15.7 to 25% reduction in rice yield was obtained in case of sowing dates where temperature stress coincided with reproductive growth phase. The crop sown on 10th December took maximum growing degree days units to attain differentphenological stages till physiological maturity. Number of grains panicle-1 and rice yield increased with delay in sowing time up to 30th December, whereas there was a decrease in duration and tillers m-2. December 30 sown rice registered the highest grain yield (7.3 t ha-1), grain yield heat use efficiency (3.2 kg ha-1 0C day-1) and dry matter heat use efficiency (6.8 kg ha-1 0C day-1). Maximum number of grains panicle-1, grain yield, grain yield heat use efficiency, dry matter heat use efficiency and benefit cost ratio of rice cultivar MTU 1156 sown on 30th December seems to be associated with non-coincidence of their reproductive growth period with heat stress and seedling growth periods with cold stress. Cultivar MTU 1001 showed moderate tolerance to temperature stress and thus recorded lower heat susceptibility index (0.65) and higher yield stability ratio (84.5).

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
Sign in / Sign up

Export Citation Format

Share Document