July 27 (Reuters) - Bunge Ltd posted a 15% jump in second-quarter adjusted profit on Wednesday, but results of the global farm commodities merchant missed Wall Street expectations and its share price fell nearly 5%.

The company raised its full-year profit forecast and discussed plans to spend about $3.3 billion on investments and expenditures in the next few years.

About $1 billion is expected to be aimed at targets that would expand the company's "core agribusiness origin and crush capabilities," Bunge Chief Financial Officer John Neppl said during an earnings call.

Bunge's results come as global supply chains have become snarled and strong demand for food and fuel propels inflation to the highest rate in decades. The company said its rising operating costs offset higher demand and tighter supplies of commodity grain crops.

Russia's invasion of major corn and wheat exporter Ukraine has driven up demand for crops that supply-chain middlemen like Bunge ship around the world. But transportation and ongoing pandemic-related issues continue to drag on the grain sector.

Bunge's agribusiness unit saw a boost from U.S. and Brazilian soy crush due to strong demand for meal and oil, it said, but its merchandising group's results were impacted in part by ocean freight, whose rates have soared amid log-jams at ports.

The company told Reuters that the segment's results were down compared with a particularly strong prior year, and said "a higher contribution from global grains was more than offset by lower results in ocean freight."

A day earlier, rival Archer-Daniels-Midland Co beat earnings expectations and highlighted "good execution in global freight."

Bunge also attributed a $59 million net loss for the quarter from its agribusiness segment to the Russia-Ukraine war.

It will be a slow process for shippers to move commodities out of Ukraine and into the global markets, Bunge Chief Executive Gregory Heckman said, in part because of damage to the country's ports on the Black Sea.

Excluding items, Bunge earned $2.97 per share, below analysts' estimate of $3.26 per share, according to Refinitiv data. Second-quarter revenue climbed 16.5% to $17.93 billion, but were below estimates of $18.46 billion. (Reporting by Rithika Krishna in Bengaluru and P.J. Huffstutter in Chicago; Editing by Aditya Soni, David Evans, Chizu Nomiyama and Leslie Adler)