Requirements for Phase I, II, & III

Requirements for Phase I, II, & III By Upper Big Blue Natural Resources District

Phase I Requirements

All operators of land within the District are subject to the requirements of Phase I.

1. Pre-plant anhydrous ammonia may not be applied prior to November 1.

2. Pre-plant nitrogen fertilizer in liquid or dry forms may not be applied prior to March 1.

3. The following fertilizer application activities are exempt from Items 1 & 2.

  • The application of nitrogen fertilizer for any purpose other than fertilization for spring planted crops.
  • The application of nitrogen fertilizer for spring planted small grains such as barley, oats and rye.
  • The application of fertilizer that is not considered a “nitrogen fertilizer” as defined in Rule 5 of the District Ground Water Management Rules and Regulations.
  • The spreading of manure, sewage and other by-products conducted in compliance with state laws and regulations.

5

Phase II Requirements

All operators of land within the District Management Zones 5, 6 and 11 are subject to the requirements of Phase II.

1. Farm operators must attend NRD approved training once every 4 years (Zone 11 operator training will be conducted this fall and winter).

2. All Phase I requirements continue to be in force in Phase II.

3. Prior to applying nitrogen fertilizer each year, the operator must obtain analysis for at least one (1) composite, zero to eight inch (0-8″) soil sample per field for organic matter and residual nitrogen and one (1) composite eight to twenty-four inch (8-24″) soil sample per field for residual nitrogen in years that corn or sorghum will be grown following a non-legume crop and/or when livestock, municipal or industrial waste was applied within the last twelve (12) months.

4. Prior to applying nitrogen fertilizer the operator must calculate the nitrogen application rate needed for each field.

  • Calculations must be based on University of Nebraska recommended procedures and must account for soil analysis and all other nitrogen credits.

5. Each operator must schedule irrigation in one field that is at least 65 acres in size or their largest irrigated field in the Phase II area, by one (1) of the following methods:

  • Capacitance probes
  • Resistance blocks
  • Other methods approved by the District.
  • By April 1 of each year, each operator must report information regarding the use of best management practices for all cropland irrigated AND dryland.
  • A copy of the soil analysis must be included with the annual report.

In Phase II, the purpose of the NRD soil sampling requirements in a field is one where the crop and irrigation practices are the same.

Phase III Requirements

All operators of land within the District Management Zones 5 are subject to the requirements of Phase III.

1. All Phase I and Phase II requirements continue to be in force in Phase III.

2. Soil sampling requirements – Prior to applying nitrogen fertilizer each year, the operator must obtain analysis for at least one (1) composite, zero to eight inch (0-8″) soil sample per forty (40) acres, or any portion thereof, for organic matter and residual nitrogen and one (1) composite eight to twenty-four inch (8-24″) soil sample per forty (40) acres, or any portion thereof, for residual nitrogen in years that corn or sorghum will be grown following a non-legume crop and/or when livestock, municipal or industrial waste was applied within the last twelve (12) months.

3. Phase III irrigation water nitrate analysis – The operator must have the irrigation water tested for nitrates at least once every three (3) years.

4. Fall and winter application of anhydrous ammonia – If anhydrous ammonia is applied between November 1 and February 29, a District approved nitrification inhibitor must also be applied at the manufacturer’s recommended rate.

The only District approved inhibitor is N-Serve. If you have questions or concerns about another inhibitor please contact Rod DeBuhr at 402-362-6601.