Toxicity of ivermectin residues in aged farmyard manure to terrestrial and freshwater invertebrates

2021 ◽  
Author(s):  
Bryony Sands ◽  
Madeleine Noll
Keyword(s):  
Farmyard Manure ◽  
Freshwater Invertebrates

Phenology and yield of coarse and fine rice under varying levels of zinc and farmyard manure

2019 ◽  
Vol 52 (2) ◽  
Author(s):  
Mohammad Munir ◽  
Ayub Khan ◽  
Shah Masaud Khan ◽  
Sher Aslam Khan ◽  
Muhammad Saeed ◽  
...  
Keyword(s):  
Farmyard Manure

Effects of Liming and Fertilization on the Dehydrogenase and Catalase Activities

2019 ◽  
Vol 70 (10) ◽  
pp. 3464-3468
Author(s):  
Alina Dora Samuel ◽  
Simona Bungau ◽  
Ilona Katalin Fodor ◽  
Delia Mirela Tit ◽  
Cristian Felix Blidar ◽  
...  
Keyword(s):  
Soil Quality ◽  
Catalase Activity ◽  
Low Dose ◽  
Farmyard Manure ◽  
Enzymatic Activities ◽  
Mineral Fertilizers ◽  
Mineral Fertilization ◽  
Favorable Conditions ◽  
Npk Fertilization

In this paper we provide new data about the soil enzyme activity as a biological process, which is an indicator for impacts of factorial combinations of lime and fertilizers applications. Five plots divided into fifteen subplots were sampled for determination of the enzymatic indicators of soil quality, based on the actual and potential dehydrogenase and catalase activities. The research revealed that limed soil samples, in comparison with unlimed ones, resulted in significantly higher soil enzymatic activities (p[0.05) in the upper (0-20 cm), while in the deeper (20-40 cm) layer, only catalase activity was significantly higher (at least at p[0.02). Mineral fertilization, in comparison with its farmyard manuring, led to an insignificant increase in each of the three enzymatic activities determined, excepting catalase activity which was significantly higher (0.05]p]0.02) in the 0-20 cm layer. Based on the absolute values of the enzymatic activities, the enzymatic indicators of soil quality (EISQ) were calculated. The mineral NPK-fertilization and low dose of lime in the 0-20 cm layer, and mineral NP-fertilization and low dose of lime in the 20-40 cm layer proved to be the best variants of fertilization. The enzymatic indicators of soil quality in these variants reached the highest values: EISQ=0.821 and EISQ=0.889, respectively, indicating the presence of high enzymatic activities. It should be emphasized that a balanced application of lime, mineral fertilizers and farmyard manure leads to the formation of favorable conditions for the development of microorganisms, growth of plants and for an intense and lasting enzymatic activity.

Effects of Long Term Application of Organic and Mineral Fertilizers on Soil Enzymes

2018 ◽  
Vol 69 (10) ◽  
pp. 2608-1612 ◽  
Author(s):  
Alina Dora Samuel ◽  
Simona Bungau ◽  
Delia Mirela Tit ◽  
Carmen Elena Melinte (Frunzulica) ◽  
Lavinia Purza ◽  
...  
Keyword(s):  
Biological Activity ◽  
Soil Quality ◽  
Soil Enzymes ◽  
Farmyard Manure ◽  
Enzymatic Activities ◽  
Mineral Fertilizers ◽  
Soil Biology ◽  
Soil Biological Activity ◽  
Organic And Mineral Fertilizers

Long term productivity and conservation of soils is critical for sustaining agricultural ecosystems. The specific objective of the work reported was to determine the effects of long term application of organic and mineral fertilizers on soil enzyme activity as an index of soil biology and biochemistry. Three key soil enzymes involved in intracellular metabolism of microorganisms and two soil enzymes involved in phosphorus metabolism were selected. Actual and potential dehydrogenase, catalase, acid and alkaline phosphatase activities were determined in the 0-20 cm layer of an eroded soil submitted to a complex fertilization experiment. Results showed that addition of mineral fertilizers to organic (green manure and farmyard manure) fertilizers led to a significant increase in each activity because of increased plant biomass production which upon incorporation stimulates soil biological activity. The enzymatic indicators of soil quality calculated from the values of enzymatic activities depending on the kind of fertilizers showed that by the determination of enzymatic activities valuable information can be obtained regarding fertility status of soils. A weak positive correlation between enzymatic indicators of soil quality and maize yield was established. The yield data demonstrate the superiority of farmyard manure which provided greater stability in crop production. Substantial improvement in soil biological activity due to application of organic fertilizers with mineral fertilizers contribute in maintaining the productivity and soil health.

Production of Artificial Farmyard Manure by Fermenting Straw 1

1927 ◽  
Vol 19 (7) ◽  
pp. 577-584 ◽  
Author(s):  
W. V. Halversen ◽  
E. F. Torgerson
Keyword(s):  
Farmyard Manure

EFFECT OF FARMYARD MANURE ON BARLEY PLANTS RESPONSE TO FOLIAR APPLICATIONS OF MICRONUTRIENTS AND SILICON IN SANDY SOIL IRRIGATED BY SALINE WATER

2019 ◽  
Vol 4 (1) ◽  
pp. 1-14
Author(s):  
Manal F. Tantawy ◽  
M. A. Ahmed ◽  
B. Y. El-Koumey ◽  
E. A. Abou Hussien ◽  
Asmaa A. E. Emam
Keyword(s):  
Sandy Soil ◽  
Saline Water ◽  
Farmyard Manure
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