About Us | Help Videos | Contact Us | Subscriptions
 

Members of ASA, CSSA, and SSSA: Due to system upgrades, your subscriptions in the digital library will be unavailable from May 15th to May 22nd. We apologize for any inconvenience this may cause, and thank you for your patience. If you have any questions, please call our membership department at 608-273-8080.

 

Institutional Subscribers: Institutional subscription access will not be interrupted for existing subscribers who have access via IP authentication, though new subscriptions or changes will not be available during the upgrade period. For questions, please email us at: queries@dl.sciencesocieties.org or call Danielle Lynch: 608-268-4976.

Abstract

 

This article in AJ

  1. Vol. 77 No. 2, p. 288-291
     
    Received: June 18, 1984


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/agronj1985.00021962007700020025x

Tillage for Control of Volunteer Proso Millet and for Production of Sorghum1

  1. Robert G. Robinson2

Abstract

Abstract

Production of proso millet (Panicum miliaceum L.) results in volunteer plants the following year. This research was conducted to determine if primary tillage influences the population density of volunteer proso and the persistence of the volunteer problem in five subsequent crops of sorghum [Sorghum bicolor (L.) Moench]. Following proso harvest, eight tillage treatments were repeated on the same plots for 5 years on Typic Hapludoll soil at Rosemount, MN. Treatments included moldboard or chisel plowing in the fall or spring, rototilling in the spring, moldboard or chisel plowing in the fall followed by rototilling in the spring, and zero tillage. Seed production of proso and other weeds was prevented for 5 and 3 years, respectively. Proso and annual weed numbers ha−1 were determined from repeated counts made shortly after emergence in permanent 1-m2 quadrats. Most (80%) of the total proso emergence occurred the 1st year after proso harvest, but 17, 2, and 1% occurred in the next 3 years, respectively. Although moldboard plowing gave the most 1styear control, proso was a potential major weed for 4 years following annual moldboard plowing in the fall and for only 3 years following the other tillage treatments. Most proso plants emerged in May, 10% emerged in June, and only 3% later. Moldboard plowing gave the most control of annual weeds other than proso. Highest grain sorghum yields followed moldboard plowing or rototilling in March or April or moldboard plowing in the fall followed by rototilling in April or May.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .