New Delhi, 02 November (NNS):  The arrivals of black pepper declined by 50 percent in the famous producing markets. The stock reported to be around 5 tonnes in the famous producing markets along with Kochi.  Both the big farmers and the traders have hoard their stock due to the limited supply. Recently, the prices of black pepper markara quality have gone up by Rs 35/40 to Rs 825/835 per kg. On the other hand, the situation seems uncertain in the famous producing countries along with Vietnam. The prices may increase after some time.