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???? 07-25-2009, 06:40 AM   #1
 
????? ???????: Jul 2009
?????????: 116
???? ????? ???????: 6
???? ????? is on a distinguished road
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????? ??????

Soil Fertility
???? ?????? ?????? ?? ??? ???? ??????? Availability ??????? ???????? ?????? ??? ???????? ?????? ?????? ?? ??? ?????? ? ????? ??? ??? ???? ????? ???? ???? ??????? ????? ?????? ?? ??? ???????? ?? ??? ?????? ????? ???? ??? ???????? ???? ????? ????? ?????? Soil Fertility
????? ????? ?? ???? ?????? ???????? ?? ????? ?? ?????? ?? ????? ?????? ????? ????? ?????? ???????? ?????? ????? ???????.
????? ??? ????? ????? ?? ?????? ???????? ?????? ???? ??? ???? ?????? ??? ?????? ????? ??????? ??? ???? ??? pH ???????? ?? ??????? ??????? ??????? ????? ??????? ??????? ??? ???? ??? ?? ??????? .
???? ????? ?? ??? ??? ?????? ?????? ???? ???????? ?? ???? ????? ???? ?????? ??????? ???????? ???? ?? ???? ???? ? ??? ???? ??? ??????? ????? ????? ??? ??????? ???????? ?????? ????? ????????? ?????? ??? ???? ???? ????? ??? ????? ???????? ???????? ???????? ?? ??????? ?????? ???? ????? . ???? ??? ??????? ??? ????? ????????? .
?????? ???? ?????? ??? ????? ????? ?????? ????? ??? ?????? ???????? ???????? ??????? Inherent Fertility ????? ???? ??? ???? ????? ??? ????? ???????? ??????? ??? ???? ???? ????? ?????????? ?? ??????? ???????? ?? ???? ????? ??????? ????? ?????? ??? ????????? ?????????? ????? ???? ????? ????? ?????? ?????? ???????? ??????? ???????? ??????????? ?????? ?????? ?? ???? ?????? .. ????? ???? ????? ?? ??????? ????????? ????? ?????? ?? ??????? ????? ???????? ????? ?????? ?????? ??? ???????? ???????? ??????? ?? ..????? ????? ??? .. ????? ????? ??????? ...
???? ??? ??????? ???????? ??????? ????? ???? ????? ????? ?????? ??? ?? ????? ???????? ??????? ???????? ?? ???? ????? ?????? ???? ??????? ???????? ?? ?????? ??? ??? ??????? ?????? ?? ??????? ???????? ???? ?? ??????? ??? ?? ??????? ???????? ????? ?? ??? ??????? ?? ?????? ?? ???? ?????? Leaching ???? ?????? ?? ???? ?? ????? ????? ????? ???? ???? ???????? Volatilization ??? ???????? ??? ????? ?????? ????? ??? ????????? ??????? ??????? ??????? ??????? ? ?? ??? ??????? ??? ????? ????? ???? ?? ???? ?? ?????? ???????? ?????? .
??? ??? ??????? ??? ????? ?????? Soil Fertility ????? ??? ?????? ???? ??? ?? ?????? ????? ????????? ??????? ?????? ???????? ?? ?? ??? ???????? ????? ???????? ????????? ???????? ?? ???? ???????? ????????? ???????? ?? ???? ????? ???? ?????? .
??? ?? ????? ????? ??????? ?? ????? ?? ?? ?????? ?? ???????? ??????? ?????????? ??????? ?? ??????? ???????? ??? ??? ?????? ???? ??????? ????? ??????? ???? ???? ??? ?????? ????? ??? ??? ????? ??? ??????? ???????? ???? ????? ?????? ???????.
- ?????? ????? ?????? ???????? ?? ??????? ?????? ?????? ????? ?????? ??? ????? ?? ?????????? ???????? ???????? ? ??? ?????? ?? ??? ????? ???? ?????? ??? ????? ?????? ???????? ???????? ??????? ???????? ????? ???? ?? ??????? ?????? ?????? ??? ??????? ?????? ??????? .
???? ?????? ?????? ?? ????? ????????? ???? ?? ???? ????? ?????? ?? ?????? ????? ???? ??????? ???? :
1-???????? ?????? Soil tests
2-????? ?????? ?????? ?? ?????? Plant analysis
3-????? ??? ??????? ???????? ??? ?????? Nutrient deficiency symptoms
4-?????????? ?????????? Biological tests
?????? ???? ?? ????? ??????
???? ???? ?????? ?? ???? ??? ????? ?????? ????? ????? ??? ???? ???? ?????? ???????? ?????????? ???? ??? ??? ?????? Prediction ??? ??? ???? ???????? ????? ??? ?????? Properties ??? ???? ?????? ?????? ?????? ???? ?????? .???? ???? ??? ???????
????????? ?????? ??????? ?? ???????? ?????????? ???? ???? ?????? ???? ??? ????? ??? ??????? ?? ??????? ??????? ?????? ?? ??????? ???????? ???????? ????? ??? ???pH ?????? ??????? ??????? .
???? ?????????? ???? ?????? ??????? ???????
????: ????? ??????? ??? ??????? ?????? ???? ???????? ??????? ??? ???? ??? ???????? ???????? Fertilizer Recommendations ???????? ??? ?????? ????
?????: ?????? ??????? ?????? ??? ????? (???????) ?? ????? ?????? ????????? ?? ?????? ?????? .
?????: ???? ??? ???? ?????? ???? ??? ????? ?????? ???? ?????? ? ???? ?? ????? ??? ????? ?????? ?? ??????
????? ??? ????? ??????? ??????? .
????? ??? ??? ????? ??????? ?? ?????? ?????? Soil test ??? ?? ?????? ??? ???? ????? ?? ?????? ????? ?????? ?????? ??????? ?????? ????? ??? ?? ??????? ???????? ????? ?? ???? ????? ?????? ?????? ?????? ??? ???? ??????? ????? ??? ??? ??????.
??? ??????? ????? ???? ??? ??? ???? ??? ????? ?????? ?? ??????? ??????? ?? ??????? ???????? ???? ??? ???? ?????? ?????? ???? ???????.. ?? ???? ????? ????? ??? ????? ?????? ?? ?????? ????? ?????? ?????? ???.
????? ??? ??? ???? ?????? ??????? ?? ??? ???????? ????? ??????? ?????????? ???????? .. ??????? ??????? Soluble ?? ??????? ?????? ????? ???? ????? ????? ?????? ??????..
????? ??? ??? ??? ??? ???? ?? ????? ?????? ??????? ????? ?? ????? ?? ??????? ??????.
??? ?????? ????????? Changeable ??? ???? ????????????? ??????? ????????? ??? ?????? ?????? ????? ?????? ???? ??? ??????? ?????? ??? ??????? ?????? ??? ?? ??? ???? ???? ??? ?????? ?? ??? ????? ?????? ??????.
????? ??????? ??? ?????? ??????? Adsorption (?? ???????? ???? ???? ?? ?????????) ??? ???????? ????????? ????????? ??????? (?????? ?????? ??????).. ?? ?? ???????? ????????? ??????? ?????? ?????? ?????? ??? ?? ??? ???? ?? ???? ?????? ?????? ??????? .
????? ??? ????? ???? ???? ????? ?????? ???? ????? ?? ???? ????? Balance ?? ????? ?????
???? ???? ?????? .. ???? ????? ??????
??? ???? ?????? ???? ?? ???? ??..????? ?????????? K..?? ?????? ??????? ?? ??????? ?????? (???? ?? ??? ???? ??? ?????? ?????? .??? ??? ?????? ?????? ???? ??? ???? Tap water ?? ??? ???? Irrigation water ??? ??? ?????? ?????? ???? ????? ?????? ?? ??????? ?????? Soil Solution..
????? ??? ??? ??????? ???? ??? ???? ??? ??? ???? ?? ????? ??? ?? ??? ???? ???? ????? ???? ??? ????? ???? ?? ????? ???? ..?????? ??? ??? ?? ??????? ???? ????? .. ???? ??? ??? ???? ..
???? ??? ??????? .. ???? ???? ??? ?????? ?????? ?????????? ?? ???????.. ????? ??????? ????? ?????????? ?? ??? ??????? .. ??? ??? ?????? ?? ????? ?????????? ?? ??????? ?????? ????? ?????? ?????? ?? .. ????? ??? ??? ???? ???? ?? ?????????? ???????? ?? ?????? ??????? Changeable ..?? ?????? ??? ?????? ?????? (?????????) ???? ???? Adsorption (???????) ???????? ??????? ?????? ??????? ??? ??????? ?????? .. ??? ??? ??? ????? ??? ???? ???? ?? ?????????? ?????? ?? ??????? ??????? ?? ?? ???? ?????? ?????? ??? ??? ??????? .. ?? ????? ?????? ??? ???? ?? ??????? ?? ???? ???? ??????? ??? ???? ?????. ?????? ????
???????? ???? . ?? ?? ??? ???? ???????? ??????? ??? ????? ???? 15 ???? ??? ????? ??? 11 ???? ?????? ?? ??? ?????? ..???? ??? ?? ????? 11 ?? ????? ??????? ????? ??????? ?????? ?? ?????? ..??? ???? 4 ?????? ?? ???????? ???? ??? ???? ?? ???? ??? ???? ????? ???????? ?????? ???? ?? ???????? ??? ?????????? ???? ??????? ?????? ??? ??????? ????? ?? 11 ???? ..????? ..
???? ?? ???? ??? ??? ????? ???? ?????? ???????? ?????? ????????? ??????? ?????? ?? ????? ?? ?????? ??????? ??????? ??????? ???? ????? ????? ?????? ??? ?????? ?? ????? ??? ???? ???? ?????? ????? ?????? ?? ?????? ?????????? ???? ?????
???? ??? ???? ???? ????? ????? ???? ???? ???????? ??? ?????? ??? ????? ?????? ??????? ?? ??????? ?????? ????? ????? ??? ?????? ???? ??? ?? ?????????? ?????? ??? ?????? ????????? ?? ??????? ?? ??? ??????? ?? ??????? ..??? ???? ??? ?????? ????? ?????????? ?? ??????? ?????? ??? ???? ????? ??? ???? ??????? ???????? ???? ???????.
?????? ???? .. ?? ??? ???? ?????? ..???? ?? ???? ??? ?? ??? ????.
??? ???? ??????? ??????? ???? ??? ?????? ?? ?? ??? ????? ??? ??? ?????? ??????? ????????? ??????? ?????? ???? ??????? ????? ????????? ???????? Stander Curve ??? ????? ?? ????? ????????? ?? ??????? ??????? ?? ?????? Low ???? ???????? ??????? ???????? ???????Medium ??????? ??????? ??????? ??????? ??? High ? ?????? ??? ????????? ?? ????? ???????? ???????? ???????? ??????? ?????? ?????? ???????? ???? ????? ??? ???????.
??????? ?? ??? ???????? ??? ?? ???? ??????? ??????? ?? ??????? ?? ?????? ???? ???? ?????? ??????? ??? ??????? Response ????? ????????? ?? ??????? ?? ?????? ?????? ?????? ???????? ???? ????? ??? ????? ?????? ?? ????? ?? ?????? ..
????? ??? ?????? ???? ?????? ?????? ????? ??? ???? ??????? ?? ??????? ?????? ?????? ?????.
???????? ?????? ?? ???????? ???????? ?? ????? ?????? ???? ??????? ?? ?? ???? ?????? ??? ???? ??????? ???????? ??????
????? ?????? ?? ???????? ???????? ?????? ?? ?? ?????? ?????? ???? ????? ???????? .?? ???? ????? ?? ????? ??? ????? ??? ????? ??? ????? ???? ??? ?? ???? ????? ????? ????? .
????? ??? ????? ???????? ???????? ????
????? ???????
????? ?? ??? ??????? ?????? ????? ??????? ??????? ???? ????? ????? ???? ????? ?? ??? ?????. ??? ???? ???? ???????? ?????? ??? .. ?????? ???? ?????? ??? ??????? ????? ??????? ???? ????? ????? ???????? ?????.
????? ??????? ?? ???? ????? ?????? ??????
????? ???? ????? ?????? ??????? ??? ????? ?? ?????? ?????? ?? ???? ?????? ?????? ????? ?????? ?? ??? ?????? ????? ?? ??????? ??????? ??? ?? ?????? ??????? ?? ???? ???????? ??????????? ???????? ?????? ??????? ?? ???? ????????? ???? ??? ???? ???? ?????? ?????? ?? ????? ??? ??? ?? ???????
????? ???????? ??????
????? ???? ????? ??????? ???? ????? ????? ?????? ???? ?????? ????? ???? ?? ???? ???? ????? ??? ???? ????? ??????? ??? ????? ??????? ????? ?? ?????? ??? ?? ????? ????? ??????? ?????? ?? ????? ???? ?? ?????? ???????. ???? ??????? ?? ????? ?? ?????? .
????????? ??? ????? ??? ????? ??????? ??? ?? ??????? ?????? ??????? ??? ?????? ????? ???? ??????? ?????? Extraction Methods ????? ??????? ??? ???? ???/ ???? ????? ??? ?????? ??????? ??????
???? ????? ?? ??? ????? ???? ?? ??????? ???? Stander ???? ??? ???? ????? ?????? ?? ?????? ?????? ??????? ???? ?????? ?????? ???? ?????? .(??????? ???? ???? ?????). ????? ?? ?????? ??????? ?? ??????? ?????? ???? ?? ????? ???????? ?????? ?? .
????? ?????? ??? ????? ?????? ??????? ???????? ?????? Available ???? ????? ??? .. ???? ???? ?????? ?????? ?????? Total ??? ????? ??? ???? ??? ?????? ???????? ?? ?????? ??? ??? ???? ?????? ???????? ???? ?????? ?????? ??? ??????? ?????? ????? ???? ????????? ????? ????? ??????? ????? ?? ?????? ???? ????? ?????? ?????? ?? ?????? ??? ?? ?????????? ?????? ??????..
?? ?????? ???? ?? ????? ?? ??????? ????? ?? ???????
??? ?? ????? ?????? ?????? ??? ????? ?????? ?????? ??? ?????????? ????? ??? ??? ??????? ??? ??? ?? ????? ????? ?????? ??????? ???????? .
????? ???? ?????? ??????? ?????? ????? ????????????? ???????
???? ????? ???? ????? ???? ?? ?????? ???????? ????? ??? ????? ?????? ????? ??????? ??????? ???? ??? ????? ????? ?????? ??? ??????? ???????? .
????? ?????????? (N)
??? ?????? ???? ??? ????
?????? ?? ???? ??????? No3 ..???? ??????? Incubation methods ???????.. ?????? ?????????? ????? ??? ???? ????? ???? ???????..????? ????? ????? ???Soltanpour ..????? ????? ?????? ?????????? KCl ?????? ???????? ??????? ?? ??? ?????? ?????? ????????? ??? ?????? ?????? ?? ????????? ??????..
???? ???? ????? ?????? ?? ????? ????????? ?????? ??? ?? ??? ??? 28 ??? ?? ??????? (ppm) ????? ??? ?? ??? ????? ??? ????? ????? ??? ?? ????????? very low ?????? ??? ?????? ????? ??????? ??? ??????? .
???? ??? ??????? ??47 ??? 64 ??? ?? ??????? (ppm) ??? ????? ??? ?????? ?????? ??? ??? ????? ???????? ?????? ?????? ??? ?? ???????? ????? ?? ????????? ?? ?????????
. ????????? ???????? ??? ???????? ??? ???????? ?? ???????? ?????? ??????? ?????? ..????? ??? ?????? ??????? ???? ..?? ?? ????? ?? ????? ?? ????? .. ????? ??? ?????? ?? ??? ?????? .
???? ????? ?????? ????????? ???? ?? 82 ??? ?? ??????? (ppm) ??????? ?????? ????? ??? ????? ????? ?? ????????? (???? ????? ??? ?????? ????) ?????? ?? ???? ??????? ??????? ????? ??? ????? ????????? ?????? .
???????? (P)
????? ????? ????? Olsen ?? ???? ????? ?????? ????? ??????? ??????? ???????? ??? ?????? ?????? ??????? ???? ???? ???? ??? ??? ???? ???????? ?????????????? ???? ???? ?? ???? ?? ????? ???????
???????? ?? ??? ??? 5 ??? ?? ??????? (ppm) ????? ????? ????? ?????Low ?????? ??????? ?? ???????? ???? ?????? ???? ?????????? ???????? ??? ??? ?????? .
??? 6 ??? 10 ??? ?? ??????? (ppm) ????? ????? ????? ???? ??????? ???? ??? ?????? ?????? ???? ?? 10 ??? ?? ??????? ????? ???? ??????? ?????? ????????.
??????????(K)
????? ????? ??????? ?????????? ?????? ???? ????????? ?? ???? ????? ?????? ???????? ?????? ??? ??????? ?????? ???? ??? ??
??? ???? ????? ????? Sand ???????????????? ??? 85 ??? ?? ??????? (ppm) ????? ????? Low ???? ???????
????? ?? ?? ????? ???? ????? Clay Loam ?????? 125 ??? ?? ??????? ????? ????? ???? ??????? .
??? ??????? ??????? Calcareous ?????? ????? 175 ??? ?? ??????? ?? ?????????? ????? ???? ????? ????? ???? ??????? ?????????.
??????? ??????
??? ?????? (Fe) ????????? (Mn) ?????? (Zn) ??????? (Cu) ??????? ??? ??????? ??????? ???????? ????? ??? DTPA
??????? ?????? ??????? ???? ??? ???? ??????? ???????:
??? ??? ????? ?? ?? ?????? ??? ?? (ppm2.5 ) .. ????????? (1.0 ppm) ..?????? (ppm 0.5 ) ..??????? ( 0.2 ppm)
?? ??? ?????? ??? ??????? ??????? ???? ??????? ???? ???? ????? ????? Soil application ???? ??? ??? ???? ????? ????? ???? ??????? ??????? ??? ????? ???? ??? ??????? ????? ???? ??? pH ?? ???? ??????? ????????? CaCO3 ???????.
?? ???? ?????? ????? Foliar application ?? ?????? ???????? ???
????? ?????? ??????? ??? ??????? ???????? ?????? .
????? ???? ?????? ?????? ???????
??????? ????? ????? ???? ???????
??? ?????  
???? 11-05-2009, 04:48 PM   #2
 
????? ???????: Jul 2009
?????????: 590
???? ????? ???????: 6
?????? ???? is on a distinguished road
???????

?????? ???? ????? ??? ??????? ?????????? ??????
?????? ???????
??? ?????  
???? 12-09-2009, 01:10 PM   #3
 
?????? ??????? ?. ???? ??????
 
????? ???????: Oct 2009
??????: ?????? - ?????? - ???
?????????: 570
???? ????? ???????: 5
?. ???? ?????? is on a distinguished road
???????

????? ???? ????? ???????? ?????

????? ?? ?? ?? ???? ???? ????? ????? ?????? ???????? ?? ???? ?? ??? ????????? ?? ????? ?? ??????
??? ?????  
???? 01-26-2010, 02:40 AM   #4
 
????? ???????: Jan 2010
??????: ???
?????????: 12
???? ????? ???????: 0
ali2000 is on a distinguished road
???????

???? ??????? ??? ??????? ??????? ?????? ???????
??? ?????  
???? 01-26-2010, 08:17 AM   #5
 
?????? ??????? ?. ???? ??????
 
????? ???????: Oct 2009
??????: ?????? - ?????? - ???
?????????: 570
???? ????? ???????: 5
?. ???? ?????? is on a distinguished road
???????

???? ??????? ???? ??? ?????? ????? ???? ?????? ????
??? ?????  
???? 01-26-2010, 10:17 PM   #6
 
????? ???????: Jan 2010
??????: ???
?????????: 12
???? ????? ???????: 0
ali2000 is on a distinguished road
???????

???? ??? ?????? ????? ????
??? ????? ?? ?? ?? ???
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- ??? ???? ?? ??????? ??? ???? ????? ?????? ????!!!!!

????? ???
??? ?????  
???? 01-27-2010, 12:42 AM   #7
 
?????? ??????? ??????? : ????
 
????? ???????: Aug 2009
??????: ??????
?????????: 1,378
???? ????? ???????: 10
??????? : ???? will become famous soon enough??????? : ???? will become famous soon enough
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????: 4380777 - 01
????: 2133631 - 01

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????: 4380777 - 009661
????: 2133631 - 009661
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???? 01-27-2010, 07:28 AM   #8
 
?????? ??????? ?. ???? ??????
 
????? ???????: Oct 2009
??????: ?????? - ?????? - ???
?????????: 570
???? ????? ???????: 5
?. ???? ?????? is on a distinguished road
???????

??????
???????? ??????? ???? ?????? ali2000
???? ??? ?????? ????? ????
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- ??? ???? ?? ??????? ??? ???? ????? ?????? ????!!!!!

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??? ?? ???? ?? ???? ??? ??? ?????? ?? ???? ?????? ??? ????? ??? ??? ????????? ?? ?????? ??? ??? ?? ??? ?? ???? ??? ???? ??? ??? ???????? ?? ???? ???? ????????? ??? ????? ??????? ???? ?????? ?? ?????? ??? ??????? ???????? ??? ?????? ????? ?????????? ??? ??? ???? ?????? ??????? ????? ???? ????? ???????? ???????? ??? ???? ??????? ?? ?????? ??????? ??? ???? ????????

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??? ?????  
???? 01-27-2010, 07:30 AM   #9
 
?????? ??????? ?. ???? ??????
 
????? ???????: Oct 2009
??????: ?????? - ?????? - ???
?????????: 570
???? ????? ???????: 5
?. ???? ?????? is on a distinguished road
???????

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