The rest of the population is divided into the different Protestant denominations and the sect the Iglesia ni Kristo and other denominations. Soil characteristics play an important role in the areas devoted to different types of industries. In the eastern section where population is numerous, the soil is composed of alluvial deposits having medium to coarse texture and with good drainage qualities suitable for planting the principal crops of the province. Rice, the major crop, is planted extensively in the area. Palay production has contributed much to the income gathered from agricultural products.
Sugarcane is the next important produce of the province.
Corn, tobacco, fruits, and tubers, the minor crops of Tarlac, are also planted in these areas. Along the extreme eastern section where the boundaries of Tarlac and Nueva Ecija meet, the soil is sticky, slightly plastic and compact making internal drainage very poor. Most of the lands here are irrigated palm. Irrigation systems are either communal or pulm types. Sources of water are the Tarlac River, o'Donnel River, and the San Miguel River.