Association between contrasting methane emissions of two rice (Oryza sativa L.) cultivars from the irrigated agroecosystem of northeast India and their growth and photosynthetic characteristics

2008 ◽  
Vol 30 (4) ◽  
pp. 569-578 ◽  
Author(s):  
Kaushik Das ◽  
K. K. Baruah
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Methane Emissions ◽  
Northeast India ◽  
Photosynthetic Characteristics

Photosynthetic characteristics of a new yellow-green mutant with high photosynthetic rate in rice (Oryza sativa L.)

2008 ◽  
Vol 46 (3) ◽  
Author(s):  
L. J. Ou ◽  
Z. Chen ◽  
X. J. Dai ◽  
L. X. Deng ◽  
Y. L. Qiu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Photosynthetic Rate ◽  
Oryza Sativa L ◽  
Photosynthetic Characteristics ◽  
Green Mutant

Partial nitrate nutrition amends photosynthetic characteristics in rice (Oryza sativa L. var. japonica) differing in nitrogen use efficiency

2010 ◽  
Vol 63 (3) ◽  
pp. 235-242 ◽  
Author(s):  
Yali Zhang ◽  
Huajun Lv ◽  
Dongsheng Wang ◽  
Jingchao Deng ◽  
Wenjing Song ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Nitrogen Use Efficiency ◽  
Oryza Sativa L ◽  
Photosynthetic Characteristics ◽  
Nitrogen Use ◽  
Use Efficiency

Photosynthetic characteristics of C4 trait in chlorina mutant of rice (Oryza sativa L.)

2008 ◽  
Vol 46 (4) ◽  
Author(s):  
L. J. Ou ◽  
W. J. Li ◽  
L. F. Tian ◽  
Z. Chen ◽  
X. J. Dai ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Photosynthetic Characteristics

scholarly journals Microbial succession and changes in carbon and nitrogen during decomposition of leaf litters of Tephrosia candida (Roxb.) DC. and Oryza sativa L. under shifting cultivation in Mizoram, northeast India

2021 ◽  
Vol 13 (3) ◽  
pp. 1032-1040
Author(s):  
Shrayosee Ghosh ◽  
Shri Kant Tripathi
Keyword(s):  
Oryza Sativa ◽  
Shifting Cultivation ◽  
Nutrient Dynamics ◽  
Oryza Sativa L ◽  
Northeast India ◽  
Dilution Method ◽  
Microbial Succession ◽  
Carbon And Nitrogen ◽  
Rhizopus Sp ◽  
Tephrosia Candida

The present study aims to understand microbial succession and dynamics of dry matter, carbon and nitrogen during the decomposition of leaf litters of Tephrosia candida (Roxb.) DC. and Oryza sativa L. in two fallow lands (FL) of 3 years (FL-3) and 8 years (FL-8) following shifting cultivation in Mizoram. A total of 64 microorganisms were isolated from two leaf litters by serial dilution method, out of which 13 microbes were identified as decomposers as they exhibited a positive response towards the enzyme activity. Among these 13 microorganisms, 4 (SKT 02, SKT 05, SKT 09 and SKT 020) were bacteria (Streptobacillus sp. and Bacillus sp.), 5 (SKT 033, SKT 034, SKT 035, SKT 040 and SKT045) were fungi (Microsporum sp., Rhizopus sp. and Aspergillus sp.) and 4 (SKT 030, SKT 052, SKT 053 and SKT 060) were actinomycetes (Streptomycetes sp.). T. candida leaf litter possessed low initial Carbon/Nitrogen (8.77) and Lignin/Nitrogen ratio (2.29) and considered a high-quality resource exhibiting higher decomposition rate.   Mass loss of carbon and nitrogen (~ 40-80%) was maximum during the initial two months, which slowed down in the later period of decomposition. It was concluded that the number of bacteria, fungi and actinomycetes regulate organic matter and nutrient dynamics in the soil through various enzymatic actions on high- and low-quality litters. The combination of O. sativa and T. candida litter is recommended to manage soil fertility in shifting cultivation of Mizoram,Northeast India.

scholarly journals Leaf photosynthetic characteristics and photosystem II photochemistry of rice (Oryza sativa L.) under potassium-solubilizing bacteria inoculation

2019 ◽  
Vol 57 (2) ◽  
pp. 500-511 ◽  
Author(s):  
M. KHANGHAHI ◽  
H. PIRDASHTI ◽  
H. RAHIMIAN ◽  
G.H. NEMATZADEH ◽  
M. SEPANLOU ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Photosystem Ii ◽  
Oryza Sativa L ◽  
Photosynthetic Characteristics ◽  
Photosystem Ii Photochemistry ◽  
Potassium Solubilizing Bacteria

Keragaan Morfologi dan Kandungan Antosianin Padi Beras Merah (Oryza sativa L.) di Kecamatan Munte dan Kecamatan Payung, Kabupaten Karo

1970 ◽  
Vol 5 (3) ◽  
pp. 391-403
Author(s):  
Wiwik Winarti ◽  
Eva Sartini Bayu ◽  
Revandy Iskandar Damanik
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
International Rice Research Institute ◽  
Research Institute

Keragaan morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.) pada Kecamatan Munte dan Kecamatan Payung di Kabupaten Karo. Penelitian ini bertujuan untuk mendapatkan informasi morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.). Penelitian ini dimulai dari Juni 2017dan selesai pada Januari 2018 di kecamatan Munte dan Kecamatan Payung Kabupaten Karo.Metode survei deskriptif menggunakan panduan International Rice Research Institute (IRRI). Teknik penentuan lokasi secara sengaja dan pengamblan sampel secara kebetulan.Uji kandungan antosianin menggunakan metode analitik dengan menghomogenkan sampel. Hasil eksplorasi didapatkan 72 genotipe yang dibagi menjadi tiga lokasi lahan. Berdasaran uji kandungan antosianin didapatkan lahan A memiliki kandungan tertinggi yaitu 0,5 mg/100 g dan terendah yaitu lahan B 0,08 mg/100 g.

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.

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