OAR 603-095-5045: Annual Nitrogen Plan Contents

An annual nitrogen plan shall include each of the following elements. (1) Landowner Name. Record the name of the landowner and the name of the operator if operator is not the owner of the land. If a certifier prepares the form, then the name of the certifier shall also be included. (2) Crop Year. Record the crop year for the calendar year that the crop will be harvested. (3) Field Identification and Acreage. Identify the location and the acreage for each field and label field location and the field identifier for each field on a map or aerial photograph. (4) Soil Type and Nitrogen. For each field, identify and label the soil type on a map or aerial photograph and record pre-planting levels of plant available nitrogen in the crop root zone. (5) Crop Type(s). For each field, identify and label on a map or aerial photograph the crop type(s) for the upcoming season. (6) Estimated Crop Yield. For each field, estimate yield per acre for each crop type. (7) Nitrogen Management Measures. For each field, record anticipated nitrogen management measures and specify the anticipated agronomic application rate for each crop. (a) An agronomic application rate shall account for existing plant-available nitrogen in the soil and include plant-available nitrogen to be applied from all sources including irrigation water. (b) A Landowner may use OSU Organic Fertilizer & Cover Crop Calculator: Predicting Plant-available Nitrogen (EM 9235) (2019) to determine the agronomic application rate for a crop. (c) An agronomic application rate for mid- or late-season fertilizer application shall account for the need for plant available nitrogen as obtained from soil or petiole sampling or as consistent with land grant university guidance for management of a specific crop type. (8) Anticipated Total Nitrogen. For each field, record estimated total nitrogen to be applied during the growing season from all sources. (9) Irrigation Water Management Measures. For each field, record the irrigation method(s) that will be used to meet the objectives in OAR 603-095-5025(3). (10) Adaptive Management Measures. For each field, record any applicable adaptive management measures according to Table 1 in OAR 603-095-5055(8). (11) Certification. A landowner shall provide proof of certification of an annual nitrogen plan as described in OAR 603-095-5060.