Since Sudan's war spread to Al-Jazira state south of Khartoum, farmers have watched their livelihoods wither away after fighting between paramilitary forces battling the army wreaked havoc on once-bountiful lands.After war erupted in April last year between the regular army and the paramilitary Rapid Support Forces (RSF), Al-Jazira -- just south of Khartoum -- became a sanctuary for more than half a million people, according to the United Nations.