Calgary-Canadian Pacific Railway Ltd. reported that a 31 percent increase in revenues from fertilizer and sulfur shipments in the first quarter helped boost its first quarter earnings to $128.6 million on revenues of $1.1 billion, up from the year-ago $108.8 million and $1.1 billion, respectively. Revenues from fertilizer/sulfur were $122.4 million, up from the year-ago $93.1 million. The increase helped offset weather-related operating conditions that CPR said challenged the entire transportation chain. CPR said weather disruptions and the CN strike increased network congestion, resulting in a reduction in the shipments of coal and some other commodities. However, fertilizer/sulfur railcar volumes were up 28.7 percent.