(Corrects headline, first and third paragraph after company clarifies it hopes producers, **t just Uralkali, will sign a deal with India) MOSCOW Russia's Uralkali hopes potash producers will sign a new supply contract with India, one of its largest customers, by the end of this month, Uralkali head of sales Vladislav Lyana told a conference call on Wednesday. The deal, if reached, would be a rare instance of India signing a potash supply contract with a major producer before China. Contracts with China usually set a price floor and benchmark for other markets.