scholarly journals Effects of Earthworm on Cow Dung and Chicken Manure of the Ratio to the Mineral Elements and Heavy Metals

2014 ◽  
Vol 04 (06) ◽  
pp. 137-141
Author(s):  
茂红 孙
2020 ◽  
Author(s):  
Caroline Wanjiru

Abstract World capture fisheries are declining while demand for fish is increasing due to population increase and an upward trend in diet preference where fish is preferred over white meat. It is hoped that aquaculture will help meet this deficit. In Kenya, coastal aquaculture remains under-developed even though over 3900 hectares of land have been designated as suitable for aquaculture. This case study is based on a study where Indian shrimp (Penaeus indicus) were cultured for 106 days, in hapas, inside fertilized ponds at Majaoni in Mtwapa creek, Mombasa district, Kenya. The manures used for pond fertilization were chicken, urea and cow dung. No manure was added in the control treatment. Physical, chemical and biological water parameters were taken weekly, fortnightly and monthly, respectively. Growth performance of the shrimp in terms of weight (g) and length (mm) was monitored fortnightly. The mean growth rates ranged between 1.13 and 2.34% day-1 in the control and chicken manure treated ponds, respectively. The highest net yield (NFY Kg ha-1) and annual production (AP Kg ha-1 yr-1) achieved was 18.87 Kg ha-1 and 64 Kg ha-1 yr-1, respectively, in the cow dung-treated ponds. The data collected from this study formed part of the author's MSc thesis in Aquaculture at the University of Nairobi. A major part of the study was funded by Alcoa Foundation's Conservation and Sustainability Fellowship Program which supported the author as a Practitioner Fellow in 2008. Additional support was provided through the Western Indian Ocean Marine Science Association (WIOMSA) small grant programme.


2014 ◽  
Vol 13 (15) ◽  
pp. 2453-2460
Author(s):  
Zhiyu Li ◽  
Ling Zhou ◽  
Fei Liu ◽  
Xuening Luo ◽  
Jinlong Sun ◽  
...  

2019 ◽  
Vol 294 ◽  
pp. 122199 ◽  
Author(s):  
Jingkun Hao ◽  
Zimin Wei ◽  
Dan Wei ◽  
Taha Ahmed Mohamed ◽  
Huimin Yu ◽  
...  
Keyword(s):  

2019 ◽  
Vol 22 (2) ◽  
pp. 84
Author(s):  
Witariadi N. M. ◽  
N. N. Candraasih K.

The study aims to determine the productivity of pinto beans (Arachis pintoi) which is fertilized with differenttypes of organic fertilizer including its dosage. The study was conducted by using a completely randomized design(CRD) within two patterns of factors. Firstly, organic fertilizers are cow dung (S) and chicken manure (A). Secondly,dosages without fertilizer (D0), 15 tons/ha dosages (D1), 20 tons/ha dosages (D2), dosage of 25 tons/ha (D3); anddosage of 30 tons/ ha (D4) of organic fertilizers. The variables observed were plant height, number of branches,number of leaves, leaf dry weight, stem dry weight, total forage dry weight, leaf areat and leaf dry weight ratio withstem dry weight. The results showed no interaction between the type and dosage of fertilizer in which the growthand production of pinto beans (Arachis pintoi) gave the same results by fertilizing with 25-30 tons/ha dosagesof chicken manure. It can be concluded that increasing the productivity of pinto beans (Arachis pintoi) can befertilized with 25-30 tons/ha dosages of chicken manure


2012 ◽  
Vol 573-574 ◽  
pp. 1129-1133 ◽  
Author(s):  
Ji Cai Qiu

The earthworm is an omnivorous animal low saprophytic, has a strong ability to decompose organic waste. The earthworm can directly grows on dung, consume a large amount of organic waste, numerous research reports, earthworm on heavy metal elements have very strong enrichment. Therefore, the use of earthworms as a bioreactor for animal feces, excessive heavy metals to biological concentration, reduce the content of heavy metals in animal feces, is a task that is worth to discuss. Taking the rural animal feces in the largest number, the most widely distributed of cow dung as study objects, to carry out the earthworm absorption in cow dung, Zn Pb Cu, the study of the optimum conditions for the further study of Earthworm on cattle manure, heavy metal enrichment techniques provide a basis.


2014 ◽  
Vol 29 (8) ◽  
pp. 764-767 ◽  
Author(s):  
M.Y. Arjouni ◽  
M.A. Bennouna ◽  
M.A. El Alaoui El Fels ◽  
A. Romane

Author(s):  
Delvi Yanti ◽  
Mislaini Rahman

The objectives of KKN-PPM activity are: 1) The method of utilizing the wastes of agriculture and stock husbandry as the media source of production oriented at the quality of outcome and the preservation of environment; and 2) The formation of sustainable integrated farming centers. The methods of activity applied are participation and action that involve the groups of target society and students who act as the facilitators. This activity was followed by 28 students partnering with <em>Cimpago Putih</em> farmer group. The results achieved on this activity are that the target groups have understood the method of utilizing the wastes of agriculture and stock husbandry, and together with the students made the demonstration plot of integrated farming system. The results achieved on each demonstration plot are: 1) The demonstration plot of mina paddy namely the growths of paddy and fish that look good; 2) The demonstration plot of combining fishery and stock husbandry, namely to decrease the contamination of environment by chicken manure; 3) The demonstration plot of biogas made of cow dung, namely gas (formed after 20 days from the first refill) and liquid compost (the sludge of biogas by-product) with the particle composition of nitrogen (2.59%), phosphor (0.022%), and kalium (4.01%); 4) The demonstration plot of compost from the waste of agriculture namely solid compost (straw and kirinyuh) with the particle composition of nitrogen, phosphor, and kalium are 2.14, 0.407, and 1.79%; and 5) the demonstration plot of cultivation and processing of forage namely the better growth of elephant grass with the ratio of alive and dead elephant of 30:1 and the paddy straw of ammoniation (the smell of ammonia, the color of brown green, and none fungus).


AgriPeat ◽  
2019 ◽  
Vol 19 (01) ◽  
pp. 51-58
Author(s):  
Administrator Journal

ABSTRACTApplication of fertilizer can increase nitrogen loss in agricultural land in the form of leaching andvolatilization. Research carried out on peat soil, done two times planting. First in the dry season totransition with nitrogen input from urea fertilizer, cow dung manure and from rainfall. Both areimplemented in the month of transition to the rainy season with nutrient input from nitrogen derivedfrom pearl NPK fertilizer, chicken manure and rainfall. Nitrogen washing is obtained frompercolation water which is accommodated by lysimeter. The volume of percolation water measuredat plant age 15, 30, 45 HST and at harvest, N content in laboratory analysis. The purpose of thisresearch is to know total nitrogen loss and efficiency level of sweet corn farming system inpeatland. Nitrogen washing in the first study was 2.28 kg N ha-1 or 2.49% and in the second studywas 8.95 kg N ha-1 or 13.65%. The other estimated loss of volatilization in the first study was 12.80Kg N ha-1 or 13.97% and in the second study it was 6.76 Kg N ha-1 or 10.31%. Average lossestimated volatilization of 9.78 kg N ha-1 or 12.45% Total nitrogen loss of 19.60%, so that sweetcorn farming system on peatlands in Kalampangan Urban Palangkaraya is classified as inefficientKeywords: Nitrogen, Sweet Corn, Peat Land


2021 ◽  
Author(s):  
Yiyuan Xu ◽  
Ruidong Yang ◽  
Jian Zhang ◽  
Lei Gao ◽  
Xinran Ni

Abstract Black shales are easily exposed duo to human activities such as mining, road construction, and shale gas development, which results in several environmental issues including heavy metals (HMs) pollution, soil erosion and the destruction of vegetation. Moss are widely used to monitor metal pollution in the atmosphere, but few studies on the distribution and dispersion of HMs in the rock – soil – moss system are available. Here, mosses (P. flexuosa Harv), growing soils, and corresponding parent rocks were collected from black shale areas. After appropriate pretreatment, samples were analyzed for multiple elements concentration by ICP-AES and ICP-MS. The results show that black shales parent rocks have elevated HMs concentration, and act as a source of multiple metals. Soil significantly inherit and accumulate heavy metals released from black shale. Significant positive correlations between HMs in P. flexuosa Harv and the growing soils indicate that HMs are mainly originating from geological source rather than atmospheric deposition. Compared with other elements, only the transfer factor (TF) of Cd is greater than 1, the normal functioning of mineral elements (K and Zn) absorption and transportation may contribute to its high tolerance to Cd. Finally, both the BCF and TF for most HMs in P. flexuosa Harv are less than 1, indicated that it has a tolerance and exclusion mechanism for these metals. Therefore, the luxuriant and spontaneous growth of P. flexuosa Harv could be used as a phytostabilization pioneer plant in the black shale outcrop where vascular plants are rare.


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