scholarly journals Studies on the Effects of Soil Temperatures on Rice Plant Growth : 2. Effects of soil and water temperatures upon heading of rice plants

1962 ◽  
Vol 30 (4) ◽  
pp. 298-301
Author(s):  
Hiroji TAKESHIMA
Keyword(s):  
Plant Growth ◽  
Rice Plant ◽  
Rice Plants ◽  
Soil Temperatures ◽  
Soil And Water

scholarly journals Diversity and Taxonomic Distribution of Endophytic Bacterial Community in the Rice Plant and Its Prospective

2021 ◽  
Vol 22 (18) ◽  
pp. 10165
Author(s):  
Mohsin Ali ◽  
Qurban Ali ◽  
Muhammad Aamir Sohail ◽  
Muhammad Furqan Ashraf ◽  
Muhammad Hamzah Saleem ◽  
...  
Keyword(s):  
Plant Growth ◽  
Sustainable Agriculture ◽  
Bacterial Communities ◽  
Endophytic Bacteria ◽  
Rice Plant ◽  
Growth Promotion ◽  
Plant Tissues ◽  
Taxonomic Distribution ◽  
Rice Plants ◽  
Agriculture Systems

Endophytic bacterial communities are beneficial communities for host plants that exist inside the surfaces of plant tissues, and their application improves plant growth. They benefit directly from the host plant by enhancing the nutrient amount of the plant’s intake and influencing the phytohormones, which are responsible for growth promotion and stress. Endophytic bacteria play an important role in plant-growth promotion (PGP) by regulating the indirect mechanism targeting pest and pathogens through hydrolytic enzymes, antibiotics, biocontrol potential, and nutrient restriction for pathogens. To attain these benefits, firstly bacterial communities must be colonized by plant tissues. The nature of colonization can be achieved by using a set of traits, including attachment behavior and motility speed, degradation of plant polymers, and plant defense evasion. The diversity of bacterial endophytes colonization depends on various factors, such as plants’ relationship with environmental factors. Generally, each endophytic bacteria has a wide host range, and they are used as bio-inoculants in the form of synthetic applications for sustainable agriculture systems and to protect the environment from chemical hazards. This review discusses and explores the taxonomic distribution of endophytic bacteria associated with different genotypes of rice plants and their origin, movement, and mechanism of PGP. In addition, this review accentuates compressive meta data of endophytic bacteria communities associated with different genotypes of rice plants, retrieves their plant-growth-promoting properties and their antagonism against plant pathogens, and discusses the indication of endophytic bacterial flora in rice plant tissues using various methods. The future direction deepens the study of novel endophytic bacterial communities and their identification from rice plants through innovative techniques and their application for sustainable agriculture systems.

scholarly journals Pengaruh Pemberian Sumber Silikon pada Sifat Kimia dan Pertumbuhan Tanaman Padi pada Tiga Jenis Tanah

2021 ◽  
Vol 26 (4) ◽  
pp. 605-611
Author(s):  
Mirawanty Amin ◽  
Hartin Kasim ◽  
Faisal Faisal
Keyword(s):  
Experimental Design ◽  
Plant Growth ◽  
Rice Plant ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Basic Material ◽  
Rice Plants ◽  
Affected Plant ◽  
Two Factors ◽  
Main Plot

Silicon (Si) has an important role in the growth of rice plants and some soil chemical properties. However, Si still receives less attention, because there is still little information about the importance of Si for rice plants and not many researches have been done on the use of Si in rice plants. This condition causes the farmers do not practice the use of Si as a fertilizer that eventually removal or release of silica from the soil solum. One source of Si that can be used as a fertilizer is trass. Currently, the trass has been widely used by the community as the basic material for making bricks. However, the use of trass as a source of Si in agriculture is not widely known. Therefore, it is necessary to evaluate the effect of trass on rice plant growth and soil chemical properties. The purpose of this study was to analyze the effect of trass addition on soil chemical properties and rice growth. The experimental design used was a separate plot where three types of soil, namely oxisol, inceptisol, and vertisol as the main plot and seven doses of trass were 0 (D0); 1.25 (D1); 2.5 (D2); 3.75 (D3); 5 (D4); 7.5 (D5); and 10 (D6) g kg-1 of soil as sub-plots. The treatment was a combination of these two factors and was repeated 3 times to obtain 63 experimental units. The results showed that the administration of trass significantly increased pH, available P, Ca-dd, Mg-dd, and significantly decreased available Fe and Mn. Meanwhile, the provision of trass also significantly affected plant height, namely 91 cm, and the number of tillers, namely 21 stems.   Key words: chemical properties, rice, silicon, trass

scholarly journals Soil and Water Warming Accelerates Phenology and Down-Regulation of Leaf Photosynthesis of Rice Plants Grown Under Free-Air CO2 Enrichment (FACE)

2014 ◽  
Vol 55 (2) ◽  
pp. 370-380 ◽  
Author(s):  
Minaco Adachi ◽  
Toshihiro Hasegawa ◽  
Hiroshi Fukayama ◽  
Takeshi Tokida ◽  
Hidemitsu Sakai ◽  
...  
Keyword(s):  
Co2 Enrichment ◽  
Leaf Photosynthesis ◽  
Down Regulation ◽  
Rice Plants ◽  
Free Air Co2 Enrichment ◽  
Free Air ◽  
Soil And Water

scholarly journals Multifarious Indigenous Diazotrophic Rhizobacteria of Rice (Oryza sativa L.) Rhizosphere and Their Effect on Plant Growth Promotion

2022 ◽  
Vol 8 ◽  
Author(s):  
Mohammad Imran Mir ◽  
Bee Hameeda ◽  
Humera Quadriya ◽  
B. Kiran Kumar ◽  
Noshin Ilyas ◽  
...  
Keyword(s):  
Plant Growth ◽  
Phosphate Solubilization ◽  
Nitrogenase Activity ◽  
Hydrolytic Enzymes ◽  
Seed Vigor ◽  
Bacterial Isolates ◽  
Diazotrophic Bacteria ◽  
Pgp Traits ◽  
Rice Plants

A diverse group of rhizobacteria persists in the rhizospheric soil, on the surface of roots, or in association with rice plants. These bacteria colonize plant root systems, enhance plant growth and crop yield. Indigenous rhizobacteria are known to promote soil health, grain production quality and serve as sustainable bioinoculant. The present study was aimed to isolate, identify and characterize indigenous plant growth promoting (PGP) diazotrophic bacteria associated with the rhizosphere of rice fields from different areas of Jammu and Kashmir, India. A total of 15 bacteria were isolated and evaluated for various PGP traits, antagonistic activity against phytopathogens, production of hydrolytic enzymes and biofilm formation under in-vitro conditions. The majority of the isolated bacteria were Gram-negative. Out of 15 bacterial isolates, nine isolates produced IAA (12.24 ± 2.86 to 250.3 ± 1.15 μg/ml), 6 isolates exhibited phosphate solubilization activity (36.69 ± 1.63 to 312.4 ± 1.15 μg/ml), 7 isolates exhibited rock phosphate solubilization while 5 isolates solubilized zinc (10–18 mm), 7 isolates showed siderophore production, 8 isolates exhibited HCN production, 6 isolates exhibited aminocyclopropane-1-carboxylate (ACC) deaminase activity, 13 isolates exhibited cellulase activity, nine isolates exhibited amylase and lipase activity and six isolates exhibited chitinase activity. In addition, 5 isolates showed amplification with the nifH gene and showed a significant amount of nitrogenase activity in a range of 0.127–4.39 μmol C2H4/mg protein/h. Five isolates viz., IHK-1, IHK-3, IHK-13, IHK-15 and IHK-25 exhibited most PGP attributes and successfully limited the mycelial growth of Rhizoctonia solani and Fusarium oxysporum in-vitro. All the five bacterial isolates were identified based on morphological, biochemical and 16S rDNA gene sequencing study, as Stenotrophomonas maltophilia, Enterobacter sp., Bacillus sp., Ochrobactrum haematophilum and Pseudomonas aeruginosa. Rice plants developed from seeds inoculated with these PGP strains individually had considerably higher germination percentage, seed vigor index and total dry biomass when compared to control. These findings strongly imply that the PGP diazotrophic bacteria identified in this work could be employed as plant growth stimulators in rice.

scholarly journals Citrus Soil pH Testing Procedures

EDIS ◽  
2019 ◽  
Vol 2019 (6) ◽  
pp. 2
Author(s):  
Kelly Morgan
Keyword(s):  
Plant Growth ◽  
Crop Yield ◽  
Soil Ph ◽  
Testing Procedures ◽  
Soil And Water

 Maintaining the correct soil pH is essential to ensure optimal plant growth and crop yield. This new two-page document is an instructional sheet for citrus soil pH testing, written by Kelly Morgan and published by the UF/IFAS Department of Soil and Water Sciences.https://edis.ifas.ufl.edu/ss665

scholarly journals Study on quinolone accumulation and growth inhibition induced by quinolone levels of hydroponics

2021 ◽  
Vol 269 ◽  
pp. 02004
Author(s):  
Xiaojuan Wang ◽  
Yaojun Wang ◽  
Jiangwen Nian ◽  
Yongbo Sun ◽  
Yonghui Zhang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Biomass ◽  
Inhibitory Effect ◽  
Organic Fertilizers ◽  
Hydroponic Experiment ◽  
Quinolone Antibiotics ◽  
Tobacco Seedlings ◽  
Food Safety Risk ◽  
Different Levels ◽  
Soil And Water

Residual antibiotics can enter soil and water bodies through organic fertilizers with food safety risk via plants absorption, while how do plant growth and quinolone accumulation respond to residual antibiotics levels in soil or water is not clear. Hydroponic experiment in greenhouse was conducted with floating seedlings of tobacco as model plant to investigate the responses of quinolone antibiotics accumulation and plant growth to different levels of ciprofloxacin (CIP) and norfloxacin (NOR). Results showed that CIP and NOR inhibited the growth of tobacco seedlings. The plant height, stem circumference, maximum leaf width, and maximum leaf area of tobacco seedlings were significantly decreased. So as to the plant biomass of leaves, stems, and roots. Accumulation of CIP in the tobacco seedlings in the T3 was 1.1 times that of the tobacco seedlings in the T1, NOR in the T4 was 1.2 times that of the tobacco seedlings in the T1. And the higher the concentration, the more significant the inhibitory effect. Both antibiotics can be absorbed and accumulated by tobacco seedlings. Additionally, the inhibitory effect of CIP was greater than that of NOR.

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