In the following video, Fool.com contributor Maxx Chatsko analyzes the first-quarter results from Terra Nitrogen (NYSE:TNH). The first quarter is generally the weakest period of the year all throughout the fertilizer and nutrient industry. Given the seasonality of the industry, that should not be much of a surprise. The industry trend did not stop this master limited partnership from posting respectable gains compared to last year, solely attributable to its focus on nitrogen nutrients such as ammonia and urea ammonium nitrate, or UAN. Still, this one-trick pony is perfectly positioned to capitalize on strong pricing trends in 2013.