Poultry Manure (poultry + manure)

Distribution by Scientific Domains


Selected Abstracts


Increases in pH and soluble salts influence the effect that additions of organic residues have on concentrations of exchangeable and soil solution aluminium

EUROPEAN JOURNAL OF SOIL SCIENCE, Issue 3 2002
M. S. Mokolobate
Summary It has been suggested that additions of organic residues to acid soils can ameliorate Al toxicity. For this reason the effects of additions of four organic residues to an acid soil on pH and exchangeable and soil solution Al were investigated. The residues were grass, household compost, filter cake (a waste product from sugar mills) and poultry manure, and they were added at rates equivalent to 10 and 20 t ha,1. Additions of residues increased soil pH measured in KCl (pH(KCl)) and decreased exchangeable Al3+ in the order poultry manure > filter cake > household compost > grass. The mechanism responsible for the increase in pH differed for the different residues. Poultry manure treatment resulted in lower soil pH measured in water (pH(water)) and larger concentrations of total (AlT) and monomeric (Almono) Al in soil solution than did filter cake. This was attributed to a soluble salt effect, originating from the large cation content of poultry manure, displacing exchangeable Al3+ and H+ back into soil solution. The considerably larger concentrations of soluble C in soil solution originating from the poultry manure may also have maintained greater concentrations of Al in soluble complexed form. There was a significant negative correlation (r = ,0.94) between pH(KCl) and exchangeable Al. Concentrations of AlT and Almono in soil solution were not closely related with pH or exchangeable Al. The results suggest that although additions of organic residues can increase soil pH and decrease Al solubility, increases in soluble salt and soluble C concentrations in soil solution can substantially modify these effects. [source]


Impact of organic manures with and without mineral fertilizers on soil chemical and biological properties under tropical conditions

JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE, Issue 1 2005
Kulvinder Kaur
Abstract Soils receiving organic manures with and without chemical fertilizers for the last 7 yr with pearlmillet,wheat cropping sequence were compared for soil chemical and biological properties. The application of farmyard manure, poultry manure, and sugarcane filter cake alone or in combination with chemical fertilizers improved the soil organic C, total N, P, and K status. The increase in soil microbial-biomass C and N was observed in soils receiving organic manures only or with the combined application of organic manures and chemical fertilizers compared to soils receiving chemical fertilizers only. Basal and glucose-induced respiration, potentially mineralizable N, and arginine ammonification were higher in soils amended with organic manures with or without chemical fertilizers, indicating that more active microflora is associated with organic and integrated system using organic manures and chemical fertilizers together which is important for nutrient cycling. [source]


Evaluation of Risk from Using Poultry Litter to Remediate and Reuse Contaminated Estuarine Sediments

REMEDIATION, Issue 4 2001
Edwin Barth
The availability of heavy metals in contaminated sediment evaluated for beneficial reuse, before and after chemical amendment, was evaluated using poultry manure as the amendment. The dredged sediment was only slightly contaminated with heavy metals. Availability tests on the amended sediment showed an increase in heavy metals, most likely because of poultry feed amendments passed to the manure. There would be difficulty finding one chemical amendment to reduce the availability of a number of heavy metals because the metals exhibit different chemical properties. © 2001 John Wiley & Sons, Inc. [source]


Evaluation of carbohydrate rich diets through common carp culture in manured tanks

AQUACULTURE NUTRITION, Issue 3 2002
P. KESHAVANATH
Four diets (T0,T3) were formulated reducing the fishmeal (Indian) component by 100 g kg,1 from 300 to 0 g kg,1 and including proportionately increasing quantities of maize. Diets were fed for 120 days at 50 g kg,1 body weight to triplicate groups of common carp (av. wt. 2.11,2.18 g) stocked at 1 m,2 in mud bottomed cement tanks (18 m2), fertilized with poultry manure. Fish growth, SGR and FCR in the different treatments were statistically not significantly different (P > 0.05). PER was lowest for the 300 g fishmeal kg,1 diet treatment (diet T0), increasing with decrease in dietary fishmeal content (diets T1,T3). Fish survival ranged from 96.29 to 100%. Diets influenced carcass composition and digestive enzyme activity. A significant increase in lipid deposition was recorded with increasing dietary carbohydrate content. Amylase, protease and lipase activities were higher in fish fed with diets T2 and T3. The protein sparing effect of dietary carbohydrate and the economic implication of eliminating fishmeal from the diet are discussed. [source]