scholarly journals Chemical Properties, Microbial Biomass and Enzyme Dynamics of Post-Harvest Soil on Transplanted Rice with Effect of Organic Amendments

2020 ◽  
pp. 52-60
Author(s):  
R. Ajaykumar ◽  
N. Thavaprakaash
Keyword(s):  
Enzyme Activity ◽  
Microbial Biomass ◽  
Microbial Population ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Soil Enzyme ◽  
Soil Chemical Properties ◽  
Enzyme Dynamics ◽  
Inorganic Fertilizers ◽  
Transplanted Rice

A field experiment was conducted at the farm of Tamil Nadu Agricultural University, Coimbatore during kharif season to study the effect of soil chemical properties, microbial biomass and soil enzyme dynamics on transplanted rice with organic amendments. Rice CO(R) 48 was used as a test variety. The experiment was laid out in randomized block design (RBD) with three replications and nine treatments. The treatment consists Recommended Dose of Fertilizers 100% NPK (150 : 50 : 50 kg ha-1) through inorganic fertilizers, Based on N equivalent basis, required quantities of organic manures (Dhaincha, vermicompost and Farmyard Manure @ 50% and 100%) were incorporated into the soil one week before transplanting of rice. The P and K requirement was supplied separately through inorganic sources as per treatment schedule. In the present investigation, an attempt was made to examine the influence of different levels and sources of fertilization on dynamics of soil chemical properties, microbial biomass and enzyme activities under anaerobic rice cultivation. Soil samples were taken before the start of experiment and harvest of rice for analysis of soil chemical characteristics, microbial biomass and enzyme activity. The results revealed that maximum microbial population (bacteria, fungal & actinomycetes), soil enzyme dynamics (urease, dehydrogenase & soil phosphatase activity), soil available macro nutrients (N, P, K) & micro nutrients (Fe, Zn, Mn, Cu) were significantly influenced with application of 100% N through dhaincha + balance P & K through inorganic fertilizers followed by application of 100% NPK through inorganic fertilizers + 6.25 t dhaincha. Least enzyme activity, microbial population & soil available nutrients of rice were registered in absolute control.

scholarly journals Differences of soil enzyme activities and its influencing factors under different flooding conditions in Ili Valley, Xinjiang

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8531 ◽  
Author(s):  
Yulu Zhang ◽  
Dong Cui ◽  
Haijun Yang ◽  
Nijat Kasim
Keyword(s):  
Microbial Biomass ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Total Phosphorus ◽  
Enzyme Activities ◽  
Catalase Activity ◽  
Microbial Biomass Carbon ◽  
Chemical Properties ◽  
Soil Enzyme ◽  
Biomass Carbon

Background A wetland is a special ecosystem formed by the interaction of land and water. The moisture content variation will greatly affect the function and structure of the wetland internal system. Method In this paper, three kinds of wetlands with different flooding levels (Phragmites australis wetland (long-term flooding), Calamagrostis epigeios wetland(seasonal flooding) and Ditch millet wetland (rarely flooded)) in Ili Valley of Xinjiang China were selected as research areas. The changes of microbial biomass carbon, soil physical and chemical properties in wetlands were compared, and redundancy analysis was used to analyze the correlation between soil physical and chemical properties, microbial biomass carbon and enzyme activities (soil sucrase, catalase, amylase and urease). The differences of soil enzyme activities and its influencing factors under different flooding conditions in Ili Valley were studied and discussed. Result The results of this study were the following: (1) The activities of sucrase and amylase in rarely flooded wetlands and seasonally flooded wetlands were significantly higher than those in long-term flooded wetlands; the difference of catalase activity in seasonal flooded wetland was significant and the highest. (2) Redundancy analysis showed that soil organic carbon, dissolved organic carbon, total phosphorus and soil microbial biomass carbon had significant effects on soil enzyme activity (p < 0.05). (3) The correlation between soil organic carbon and the sucrase activity, total phosphorus and the catalase activity was the strongest; while soil organic carbon has a significant positive correlation with invertase, urease and amylase activity, with a slight influence on catalase activity. The results of this study showed that the content of organic carbon, total phosphorus and other soil fertility factors in the soil would be increased and the enzyme activity would be enhanced if the flooding degree was changed properly.

Short-Term Effects of Land Leveling on Soil Chemical Properties and Their Relationships with Microbial Biomass

2004 ◽  
Vol 68 (3) ◽  
pp. 924-934 ◽  
Author(s):  
K. R. Brye ◽  
N. A. Slaton ◽  
M. Mozaffari ◽  
M. C. Savin ◽  
R. J. Norman ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Short Term ◽  
Land Leveling ◽  
Short Term Effects

Effects of graphene oxides on soil enzyme activity and microbial biomass

2015 ◽  
Vol 514 ◽  
pp. 307-313 ◽  
Author(s):  
Haegeun Chung ◽  
Min Ji Kim ◽  
Kwanyoung Ko ◽  
Jae Hyeuk Kim ◽  
Hyun-ah Kwon ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Microbial Biomass ◽  
Soil Enzyme ◽  
Soil Enzyme Activity ◽  
Graphene Oxides

scholarly journals Effectiveness of Organonitrofos Plus Fertilizer on Sweet Corn and Soil Chemical Properties of Ultisols

2016 ◽  
Vol 21 (1) ◽  
pp. 9
Author(s):  
. Dermiyati ◽  
Setyo Dwi Utomo ◽  
Kuswanta Futas Hidayat ◽  
Jamalam Lumbanraja ◽  
Sugeng Triyono ◽  
...  
Keyword(s):  
Zea Mays ◽  
Sweet Corn ◽  
Block Design ◽  
Chemical Properties ◽  
Inorganic Fertilizer ◽  
Soil Chemical Properties ◽  
Corn Production ◽  
Inorganic Fertilizers ◽  
Randomized Block Design ◽  
The Difference

This study aimed to examine Organonitrofos Plus fertilizer (OP) on sweet corn (Zea mays Saccharata L.) and its effect on changes in soil chemical properties of Ultisols. Organonitrofos Plus fertilizer is an enhancement of Organonitrofos fertilizer enriched with microbes at the beginning of the manufacturing process. Research was conducted in the greenhouse of Integrated Agricultural Laboratory of Lampung University. Treatment applied was a factorial of 4 × 2 × 3 with three replications in a randomized block design. The first factor was the dose of OP fertilizer (0, 10, 20, 30 Mg ha-1), the second factor was the dose of inorganic fertilizers (without inorganic fertilizers, and with inorganic fertilizers, namely Urea 0.44, 0.28 SP-36 and KCl 0.16 Mg ha-1), and the third factor was the dose of biochar (0, 10, 20 Mg ha-1). By a single OP fertilizers, inorganic fertilizers, and the interaction between the OP and the inorganic fertilizers increased the weight of dry stover, cob length, cob diameter, cob with husk and cob without husk of corn. OP fertilizers which are applied in Ultisols can improve soil fertility and increase corn production so that OP fertilizer can lessen the use of inorganic fertilizer and can be used as a substitute for inorganic fertilizer. RAE values were highest in treatment of O4K2B2 (30 Mg OP ha-1, with inorganic fertilizer, 10 Mg biochar ha-1) that was equal to 181%, followed by O2K2B3 (10 Mg OP ha-1, with inorganic fertilizer, 20 Mg biochar ha-1 ) with the difference in RAE value of 0.5%. [How to Cite: Dermiyati, SD  Utomo,  KF Hidayat, J Lumbanraja, S Triyono, H Ismono, NE  Ratna, NT Putri dan R Taisa. 2016. Pengujian Pupuk Organonitrofos Plus pada Jagung Manis (Zea mays Saccharata. L) dan Perubahan Sifat Kimia Tanah Ultisols. J Trop Soils 21: 9-17 Doi: 10. 10.5400/jts.2016.21.1.9]

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