There are a few institutions in Israel which offer different short and long term courses or training programs in the field of agriculture - all in English especially, to international students, visitors and professionals. Among those institutions: The Arava Institute, The Golda Meir Training Center, The Center of International Agriculture Development Cooperation and more. Each institution offer different courses so I've attached a link a at the end of my message that will send you to an article about the different schools, institutes and programs you can choose from and hopefully help you find the best one for you.