* U.S., China factory data; weaker supply-demand disappoints
    * Cyprus bailout still a threat as Europe closed for Easter
    * Caution too before ECB meeting, US jobs data later in week
    * Dollar down versus euro, U.S. stocks retreat from Thurs
record

    By Barani Krishnan
    NEW YORK, April 1 (Reuters) - Grains and metals markets
extended their tumble into the second quarter, with corn and
copper hitting nine-month lows on Monday amid weaker
supply-demand fundamentals and disappointing U.S. and Chinese
manufacturing data.
    Oil prices were mixed as traders remained wary of more
fallout from Cyprus' banking bailout and the impact that could
have on the broader euro zone as European markets reopen on
Tuesday from the Easter break.
    Caution also prevailed before the European Central Bank's
monetary policy review on Thursday, and monthly U.S. payroll
data on Friday. U.S. stocks fell after both the Dow and the S&P
500 retreated from record closing highs of the previous session.
The dollar also fell against the euro and other major
currencies. .
    By 12:20 p.m. EDT (1620 GMT), the Thomson Reuters-Jefferies
CRB index was down 0.6 percent after 12 of the 19
markets tracked by the commodities bellwether slipped into
negative territory.
    The broad decline came after The Institute for Supply
Management's reading of 51.3 for U.S. manufacturing in March
fell short of analysts' average forecast of 54.2.
 
    
    CHINA, U.S. FACTORY GROWTH DISAPPOINT
    In China, the official purchasing managers index for March
came in at 50.9, the highest in 11 months, although a Reuters
poll showed economists had expected a rise to 52.0 from
February's five-month low of 50.1. 
    China's factory data "came in below market expectations,
which could indicate that oil demand growth may not expand quite
as quickly as we would like it to", said Carl Larry, president
of the Houston-based Oil Outlooks and Opinion.
    London's benchmark Brent crude was up 33 cents at
$110.42 a barrel, after a 1 percent drop in the first quarter
which ended Thursday. Its peak for the session was $110.47,
which marked a high since March 15.
    U.S. crude was down 73 cents at $96.51 a barrel,
swinging between a six-week high of $97.80 and an intraday low
of $95.92 during the session. It had gained nearly 6 percent in
the January-March period. 
    On the grains front, corn futures in Chicago dropped to a
nine-month low, extending its biggest two-day slide since
January 2009, as larger-than-expected U.S. stockpiles heaped
pressure on the market.
    The U.S. Department of Agriculture surprised grains markets
on Thursday by pegging corn stocks at 5.399 billion bushels as
of March 1, above the average analyst estimate of 5.013 billion
bushels. The USDA also said farmers would plant the highest corn
acreage since 1936. 
    The front-month corn contract on the Chicago Board of Trade
corn fell as much as 6.3 percent to $6.51-1/2 a bushel,
the lowest nearby price since late June.
    CBOT soybeans fell to a near three-month low, while
wheat hit a three-week bottom, weighed down by corn. Wheat
also posted the biggest fall among U.S. commodities for the
first quarter, falling nearly 12 percent. 
    Among other crops, raw sugar futures flirted with a
2-1/2-year low in New York after losing 9 percent between Jan
and March for a fourth straight quarterly loss due to ample
Brazilian supplies. 
    In metals, the most-active copper futures contract in
Shanghai fell more than 2 percent to 53,600 yuan
($8,600) a tonne, its lowest level in more than nine months,
pressured by a weak euro and new measures to douse China's red
hot property sector. 
    In New York, U.S. copper's most-active contract, May,
was down 0.9 percent at $3.3720 a lb.
    
 Prices at 12:14 p.m. EST (1614 GMT)                        
 
                              LAST      NET    PCT     YTD
                                        CHG    CHG     CHG
 US crude                    96.36    -0.88  -0.9%    4.9%
 Brent crude                110.55     0.53   0.5%   -0.5%
 Natural gas                 4.027    0.003   0.1%   20.2%
 
 US gold                   1599.30     4.50   0.3%   -4.6%
 Gold                      1599.60     3.43   0.2%   -4.5%
 US Copper                  337.20    -3.00  -0.9%   -7.7%
 
 Dollar                     82.706   -1.282  -1.5%    7.7%
 
 
 US corn                    654.25   -41.25  -5.9%   -6.3%
 US soybeans               1395.25    -9.50  -0.7%   -1.7%
 US wheat                   670.75   -17.00  -2.5%  -13.8%
 
 US Coffee                  137.70     0.55   0.4%   -4.2%
 US Cocoa                  2180.00    10.00   0.5%   -2.5%
 US Sugar                    17.72     0.06   0.3%   -9.2%
 
 US silver                  27.955   -0.368  -1.3%   -7.5%
 US platinum               1585.00    13.80   0.9%    3.0%
 US palladium               783.80    15.55   2.0%   11.4%