•  
  •  
 

Keywords

Pearl millet, nitrogen, phosphorus, forage yield, nutritive value, TifLeaf 3

Abstract

There is limited information on the nitrogen (N) and phosphorus (P) fertilizer requirement of pearl millet forage in dryland systems. Determination of optimum N and P rates for pearl millet forage production in dryland environments of the Great Plains will have economic advantage for farmers and ranchers growing pearl millet for forage. A field experiment was conducted in 2016 at the Agricultural Research Center-Hays, KS, to investigate N and P fertilizer application effects on forage yield and nutritive value of pearl millet. Factorial combinations of five levels of N (0, 30, 60, 90, and 120 lb/a) and three levels of P (0, 15, and 30 lb/a) were evaluated in randomized complete block design with four replications. A forage-hybrid cultivar, TifLeaf 3, released by U.S. Department of Agriculture, Agricultural Research Service (USDA-ARS) unit at the University of Georgia (Tifton, GA) was used for the experiment. The seed was drilled in six rows at 15 lb/a in individual plot sizes of 5 ft wide × 30 ft long. The results indicate that N fertilizer application increased forage yield, crude protein content, andin vitrodry matter digestibility. Although increase in N rate increased the protein content and digestibility of the forage, this single season on-station experiment indicates that N rate of 30 lb/a is adequate for pearl millet forage production under rain-fed conditions. Application of P fertilizer had no effect on forage yield. However, applying 15 lb P/a did increasein vitrodry matter digestibility compared to the check treatment.

COinS
 

Rights Statement

In Copyright - Educational Use Permitted.
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.