DuPont Co., parent of Johnston-based DuPont Pioneer, said its first-quarter earnings fell 57 percent as growth in most of its businesses was offset by harsh weather and shifts in agriculture, MarketWatch reported.

DuPont said that in the latest quarter, adverse weather reduced per-share earnings by an estimated 7 cents owing to increased operating costs and lost sales.

DuPont reported a profit of $1.44 billion, or $1.54 a share, down from $3.35 billion, or $3.58 a share, a year earlier. Revenue decreased 2.7 percent to $10.1 billion.