Vanguard Ag Our affiliates: Tulare AG Products | Irrigation Matters | Cal GAP | Source to Source | Integrated Crop Capture Va ... nguard Ag was created to support Tulare AG Products, Irrigation Matters, and Cal GAP by revolutionizing the way in which the companies organize themselves, work together, and provide information to growers. For the last 25 years our traditional way of doing business has sculpted our culture and old school style of interacting with our growers our agronomists Vanguard Ag promotes traditional practices as well as provides our agronomists with decision making tools critical to grower’s success connecting nutrition, water, in-field sensor technology, and regulatory compliance. read more