scholarly journals SOIL ENZYME ACTIVITIES UNDER CROP ROTATIONS SYSTEMS IN A BROWN LUVIC SOIL

1970 ◽  
Vol 62 ◽  
Author(s):  
Alina Dora Samuel ◽  
C. Domuţa ◽  
Maria Şandor
Keyword(s):  
Soil Quality ◽  
Crop Rotation ◽  
Enzyme Activities ◽  
Farmyard Manure ◽  
Soil Enzyme ◽  
Enzymatic Activities ◽  
Crop Rotations ◽  
Soil Enzyme Activities ◽  
Phosphatase Activities

Actual and potential dehydrogenase and catalase and phosphatase activities were determined in the 0–20–, 20–40– and 40–60–cm layers of a brown luvic soil submitted to a complex tillage and crop rotation experiment. The soil under maize or wheat was more enzyme-active in the 6– than in the 2–crop rotation. In the 2–crop rotation, higher enzymatic activities were registered under wheat than under maize. In the 6–crop rotation, the enzymatic indicators of soil quality decreased, depending on the nature of crops and kind of fertilisers (mineral NP or farmyard manure), in the following order: farmyard-manured maize > minerally fertilised (m.f.) soybean > m.f. wheat > m.f. maize (plot 4) > m.f. maize (plot 1) > m.f. clover.

scholarly journals The influence of halophytic compost, farmyard manure and phosphobacteria on soil microflora and enzyme activities

2008 ◽  
Vol 53 (No. 4) ◽  
pp. 186-192 ◽  
Author(s):  
V. Balakrishnan ◽  
K. Venkatesan ◽  
K.C. Ravindran
Keyword(s):  
Alkaline Phosphatase ◽  
Enzyme Activities ◽  
Microbial Population ◽  
Farmyard Manure ◽  
Soil Enzyme ◽  
Soil Microflora ◽  
Soil Enzyme Activities ◽  
Chemical Fertilizers ◽  
Soil Microbial ◽  
Soil Microbial Population

Biocompost has been identified as an alternative to chemical fertilizers that increased soil microbial population and soil enzyme activities in sustainable farming. The objective of this field study was to evaluate the effect of three halophytic composts in combination with farmyard manure and phosphate solubilising bacteria (<i>Bacillus megaterium</i>) on soil microflora and enzyme activities. The results show that among nine treatments given, the application of <i>Suaeda</i> compost in combination with farmyard manure and phosphate solubilising bacteria (T<sub>9</sub>) significantly increased the soil microflora such as bacteria, fungi and actinomycetes and soil enzyme activities such as dehydrogenases, alkaline phosphatase, cellulase and urease in soil cultivated with <i>Arachis hypogaea</i>.

scholarly journals Soil enzyme activities under long-term tillage and crop rotation systems in subtropical agro-ecosystems

2004 ◽  
Vol 35 (4) ◽  
pp. 300-306 ◽  
Author(s):  
Elcio Liborio Balota ◽  
Miriam Kanashiro ◽  
Arnaldo Colozzi Filho ◽  
Diva Souza Andrade ◽  
Richard Peter Dick
Keyword(s):  
Crop Rotation ◽  
Enzyme Activities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities

scholarly journals Impacts of the transgenic CrylAc and CpTI insect-resistant cotton SGK321 on selected soil enzyme activities in the rhizosphere

2014 ◽  
Vol 60 (No. 9) ◽  
pp. 401-406 ◽  
Author(s):  
Zhang YJ ◽  
M. Xie ◽  
Li CY ◽  
G. Wu ◽  
Peng DL
Keyword(s):  
Enzyme Activities ◽  
Rhizosphere Soil ◽  
Principal Component ◽  
Northern China ◽  
Transgenic Cotton ◽  
Soil Enzyme ◽  
Growth Stages ◽  
Soil Enzyme Activities ◽  
Phosphatase Activities ◽  
Insect Resistant

Transgenic CrylAc and CpTI insect-resistant cotton SGK321 is widely adopted for many years in several regions of China, however the understanding of its potential effects on soil enzyme activities is not studied. The impacts of transgenic cotton SGK321 on dehydrogenase, urease and phosphatase activities in rhizosphere soil were investigated in a two-year field study in Northern China. Rhizosphere soil enzyme activities between transgenic cotton SGK321 and its non-transgenic parental cotton Shiyuan 321 were found to differ at senescence. However compared to the plant growth stages and cotton cultivar, the impacts of the transgenic trait were minor or transient. The principal component analysis also showed no significant or minor difference in the activities of dehydrogenase, urease and phosphatase in the rhizosphere soil of transgenic cotton SGK321 and its counterpart. Our results indicated that the transgenic cotton SGK321 has no apparent impact on dehydrogenase, urease and phosphatase activities in rhizosphere soil.

scholarly journals PHYSICAL AND BIOLOGICAL PROPERTIES OF SOIL FERTILIZED WITH GREEN MANURE

1970 ◽  
Vol 63 ◽  
Author(s):  
Alina Dora Samuel ◽  
C. Domuţa
Keyword(s):  
Enzyme Activities ◽  
Green Manure ◽  
Agricultural Practices ◽  
Biological Properties ◽  
Soil Enzyme ◽  
Enzymatic Activities ◽  
Soil Enzyme Activities ◽  
Unfertilized Plot ◽  
Properties Of Soil

Agricultural practices that improve agricultural sustainability are needed particularly for brown luvic soil. Soil enzyme activities can provide information on how soil management is affecting the processes in soil such as decomposition and nutrient cycling. Soil enzyme activities (actual and potential dehydrogenase, catalase, acid and alkaline phosphatase) were determined in the 0–10, 10–20, and 20–30 cm layers of a brown luvic soil submitted to a complex fertilization experiment with different types of green manure. It was found that each activity decreased with increasing sampling depth. It should be emphasized that green-manuring of maize led to a significant increase in each of the five enzymatic activities determined. The enzymatic indicators of soil quality calculated from the values of enzymatic activities showed the order: lupinus + rape + oat > lupinus > vetch + oat + ryegrass > lupinus + oat + vetch > unfertilized plot. This order means that by determination of enzymatic activities valuable information can be obtained regarding fertility status of soils. There were significant correlations of soil enzyme activities with physical properties.

Use of soil enzyme activities to monitor soil quality in natural and improved fallows in semi-arid tropical regions

2001 ◽  
Vol 18 (3) ◽  
pp. 229-238 ◽  
Author(s):  
Ndour Ndèye Yacine Badiane ◽  
J.L Chotte ◽  
E Pate ◽  
D Masse ◽  
C Rouland
Keyword(s):  
Soil Quality ◽  
Enzyme Activities ◽  
Soil Enzyme ◽  
Soil Enzyme Activities ◽  
Improved Fallows ◽  
Tropical Regions ◽  
Semi Arid
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