PMID- 27493649
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20160805
LR  - 20201001
IS  - 1664-462X (Print)
IS  - 1664-462X (Electronic)
IS  - 1664-462X (Linking)
VI  - 7
DP  - 2016
TI  - Nitrogen Mineralization of a Loam Soil Supplemented with Organic-Inorganic 
      Amendments under Laboratory Incubation.
PG  - 1038
LID - 10.3389/fpls.2016.01038 [doi]
LID - 1038
AB  - The quantification of nitrogen (N) supplying capacity of organic amendments 
      applied to a soil is of immense importance to examine synchronization, N release 
      capacity, and fertilizer values of these added materials. The aims of the present 
      study was to determine the potential N mineralization and subsequent 
      nitrification of separate and combined use of poultry manure (PM), wheat straw 
      residues (WSR), and urea N (UN) applied to a loam soil incubated periodically 
      over 140 days period. In addition, changes in total soil N and carbon contents 
      were also monitored during the study. Treatments included: PM100, WSR100, PM50 + 
      WSR50, UN100, UN50 + PM50, UN50 + WSR50, UN50 + PM25 + WSR25, and a control 
      (unfertilized). All the amendments were applied on an N-equivalent basis at the 
      rate of 200 mg N kg(-1). Results indicated that a substantial quantity of N had 
      been released from the added amendments into the soil mineral pool and the net 
      cumulative N mineralized varied between 39 and 147 mg N kg(-1), lowest in the WSR 
      and highest in the UN50 + PM50. Significant differences were observed among the 
      amendments and the net mineral N derived from a separate and combined use of PM 
      was greater than the other treatments. The net cumulative N nitrified (NCNN) 
      varied between 16 and 126 mg kg(-1), highest in UN50 + PM50 treatment. On 
      average, percentage conversion of added N into available N by different 
      amendments varied between 21 and 80%, while conversion of applied N into NO3 
      (-)-N ranged between 9 and 65%, and the treatment UN50 + PM50 displayed the 
      highest N recovery. Urea N when applied alone showed disappearance of 37% N (N 
      unaccounted for) at the end while application of PM and WSR with UN reduced N 
      disappearance and increased N retention in the mineral pool for a longer period. 
      Organic amendments alone or in combination with UN improved organic matter 
      buildup and increased soil N concentration. These results demonstrate the 
      existence of substantial amounts of N reserves present in PM and WSR that can be 
      utilized efficiently and effectively as potential N source for the management of 
      nutrient poor soils and plant growth.
FAU - Abbasi, M Kaleem
AU  - Abbasi MK
AD  - Department of Soil and Environmental Sciences, Faculty of Agriculture, The 
      University of Poonch Rawalakot, Rawalakot Pakistan.
FAU - Khaliq, Abdul
AU  - Khaliq A
AD  - Department of Soil and Environmental Sciences, Faculty of Agriculture, The 
      University of Poonch Rawalakot, Rawalakot Pakistan.
LA  - eng
PT  - Journal Article
DEP - 20160721
PL  - Switzerland
TA  - Front Plant Sci
JT  - Frontiers in plant science
JID - 101568200
PMC - PMC4954816
OTO - NOTNLM
OT  - N transformations
OT  - mineralization
OT  - nitrification
OT  - organic amendments
OT  - poultry manure
OT  - wheat straw residues
EDAT- 2016/08/06 06:00
MHDA- 2016/08/06 06:01
PMCR- 2016/01/01
CRDT- 2016/08/06 06:00
PHST- 2015/11/09 00:00 [received]
PHST- 2016/07/01 00:00 [accepted]
PHST- 2016/08/06 06:00 [entrez]
PHST- 2016/08/06 06:00 [pubmed]
PHST- 2016/08/06 06:01 [medline]
PHST- 2016/01/01 00:00 [pmc-release]
AID - 10.3389/fpls.2016.01038 [doi]
PST - epublish
SO  - Front Plant Sci. 2016 Jul 21;7:1038. doi: 10.3389/fpls.2016.01038. eCollection 
      2016.