Israeli authorities on Thursday opened the Kerem Shalom border crossing in northern Gaza for limited import and export, a Palestinian Authority official told Ma'an.The 450 trucks entering Gaza include cement, iron, gas and building material and other goods, said PA liaison officer Raed Fattuh. Flowers and herbs destined for Europe will also travel through the border.Farmers in the Gaza Strip on Sunday destroyed three tons of rotten herbs and spices that were to be shipped to markets in Europe before Israel closed the border crossings.Muhammad Zuweid, a marketing official in Gaza, told Ma'an that three tons of mint, sage, basil, and tarragon were ready to be exported to Europe and waiting at the Kerem Shalom crossing.After days of closure, the goods expired and became unsafe to use, he said.Moreover, the herbs are not heavily consumed by local markets. The available amounts exceed the needs of the local markets, which is why they were selected to export abroad.He explained that the tarragon herb is not used locally, but it is usually exported abroad. Salvia officinalis, or garden sage, was being prepared for export for the first time this year.UN Humanitarian Coordinator James Rawley said last Wednesday that the closure was hitting food supplies and would have "serious" effects if continued."In response to a deteriorating security situation in and around Gaza ... Israel has announced a series of heightened restrictions on the movement of people and goods to and from the Gaza Strip, including closures of the Kerem Shalom crossing," Rawley said."These measures are resulting in the depletion of stocks of essential supplies, including basic foodstuffs and cooking gas, and undermine the livelihoods and rights of many vulnerable Gazan families," he said in a statement."If these restrictions continue, the effect upon the Gaza population will be serious."