President Asif Ali Zardari has invited Australian companies to invest in Pakistan's agriculture and agricultural equipment sectors.He was talking to Australian High Commissioner to Pakistan Neil Hawkins who called on him in Islamabad today.The President expressed satisfaction over Pak-Australia bilateral cooperation in the field of mining and minerals.The Australian High Commissioner apprised the President of current level of Pak-Australia relations and told him that Australia is extending cooperation in the fields of education, defense and agriculture.Source: Radio Pakistan