The effects on N2 fixation (C2H2 reduction), bacterial population and rice plant growth of two modes of straw application to a wetland rice field

1987 ◽  
Vol 5 (2) ◽  
Author(s):  
J.K. Ladha ◽  
A. Tirol-Padre ◽  
M.L.G. Daroy ◽  
G. Punzalan ◽  
I. Watanabe
Keyword(s):  
Plant Growth ◽  
N2 Fixation ◽  
Rice Plant ◽  
Bacterial Population ◽  
Rice Field ◽  
Wetland Rice ◽  
C2h2 Reduction ◽  
Straw Application

Isolasi dan Karakterisasi Bakteri Tanah Sawah di Kecamatan Medan Satria dan Bekasi Utara, Kota Bekasi, Jawa Barat

2017 ◽  
Vol 3 (4) ◽  
pp. 187 ◽  
Author(s):  
Arief Pambudi ◽  
Nita Noriko ◽  
Endah Permata Sari
Keyword(s):  
Plant Growth ◽  
Soil Bacteria ◽  
Rice Field ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fertilizer Application ◽  
Rice Production ◽  
Production Costs ◽  
Soil Conditions ◽  
Nitrogen Fixation Activity ◽  
Growth Promoting

<p><em>Abstrak -</em><strong> </strong><strong>Produksi padi di Indonesia setiap tahun mengalami peningkatan, namun peningkatan ini belum mampu memenuhi kebutuhan nasional sehingga impor masih harus dilakukan. Salah satu masalah dalam produksi beras adalah penggunaan pupuk berlebih yang tidak hanya meningkatkan biaya produksi, namun juga merusak kondisi tanah. Aplikasi bakteri tanah sebagai Plant <em>Growth Promoting Rhizobacteria</em> (PGPR) dapat menjadi salah satu solusi terhadap masalah ini. Penelitian ini bertujuan untuk mengisolasi bakteri tanah dari 3 lokasi sawah daerah Bekasi, membandingkan keberadaan total bakteri pada ketiga lokasi tersebut,  dan melakukan karakterisasi isolat berdasarkan karakter yang dapat memicu pertumbuhan tanaman. Dari ketiga lokasi, diperoleh total 59 isolat dan 5 diantaranya berpotensi sebagai PGPR karena kemampuan fiksasi Nitrogen, melarutkan Fosfat, katalase positif, dan motil. Dari ketiga lokasi pengambilan sampel, BK1 memiliki jumlah total bakteri terendah karena aplikasi pemupukan dan pestisida berlebih yang ditandai tingginya kadar P total, serta tingginya residu klorpirifos, karbofuran, dan paration. Kondisi fisik tanah BK1 juga didominasi partikel liat yang menyebabkan tanah menjadi lebih padat. Peningkatan jumlah penggunaan pupuk tidak selalu diikuti peningkatan produktivitas tanaman.</strong></p><p> </p><p><strong><em>Kata Kunci</em></strong><strong><em> </em></strong>- <em>Bakteri tanah, Rhizosfer sawah, PGPR, Pupuk Hayati</em></p><p><strong> </strong></p><p><em>Abstract</em><strong> - </strong><strong>Rice production in Indonesia has increased annually, but this increase has not reached national demand,so imports still done. </strong><strong>One of the problems in rice production is the use of excessive fertilizers that not only increase production costs, but also decreased the soil conditions. The application of soil bacteria as Plant Growth Promoting Rhizobacteria (PGPR) can be the one solution to face this problem. The objective of this study was isolate soil bacteria from 3 locations of rice field in Bekasi, compare the total bacteria in the three locations, and characterize isolates based on the character that can promote plant growth. From three locations, a total of 59 isolates were obtained and 5 of them were potential as a PGPRs due to its Nitrogen fixation activity, Phosphate solubilization, positive catalase, and motility. From three sampling sites, BK1 has the lowest TPC value because of excessive  fertilizers and pesticides application which indicated by high total P levels, and also high chlorpyrifos, carbofuran and paration residues. The physical condition of BK1 soil is also dominated by clay particles which causes the soil more solid. Increasing of fertilizer application is not always followed by increased plant productivity.</strong></p><p><strong> </strong></p><p><strong><em>Keywords</em></strong> - <em>Biofertilizer, PGPR, Rice field rhizosphere, Soil Bacteria</em></p>

scholarly journals Effect of rice plant growth on denitrification in rhizosphere soil

1999 ◽  
Vol 45 (3) ◽  
pp. 599-607 ◽  
Author(s):  
Ken-ichi Kakuda ◽  
Ho Ando ◽  
Masakado Harayama
Keyword(s):  
Plant Growth ◽  
Rice Plant ◽  
Rhizosphere Soil

scholarly journals Acquired salinity tolerance in rice: Plant growth dataset

Data in Brief ◽  
2020 ◽  
Vol 31 ◽  
pp. 106023
Author(s):  
Karthika Sriskantharajah ◽  
Shota Osumi ◽  
Sumana Chuamnakthong ◽  
Mami Nampei ◽  
Junrey C. Amas ◽  
...  
Keyword(s):  
Plant Growth ◽  
Salinity Tolerance ◽  
Rice Plant

Corrigendum to “Improvement of rice plant productivity by native Cr(VI) reducing and plant growth promoting soil bacteria Enterobacter cloacae” [Chemosphere 240 (2020) 124895]

Chemosphere ◽  
2020 ◽  
Vol 238 ◽  
pp. 125011
Author(s):  
Swati Pattnaik ◽  
Debasis Dash ◽  
Swati Mohapatra ◽  
Matrujyoti Pattnaik ◽  
Amit K. Marandi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Rice Plant ◽  
Soil Bacteria ◽  
Enterobacter Cloacae ◽  
Plant Productivity ◽  
Plant Growth Promoting ◽  
Growth Promoting
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