About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in AJ

  1. Vol. 64 No. 6, p. 736-738
     
    Received: Mar 8, 1972


 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/agronj1972.00021962006400060008x

Influence of Seed Orientation on Bean Seedling Emergence1

  1. S. A. Bowers and
  2. C. W. Hayden2

Abstract

Abstract

Observation from an unrelated field bean experiment indicated that certain seed orientations might reduce emergence. Consequently, studies were initiated to determine if orientation variations occur in planting and if these variations influence emergence.

Orientation of bean seeds, dropped into both “V” and flat-bottom furrows, were classified and tabulated. In “V” furrows almost all orientations were possible; 36% assumed the “lay-flat” orientation. In the flat-bottom furrow 85% of the beans were in the “lay-flat” position. The influence of 11 different seed orientations on emergence was evaluated in greenhouse studies. With crusted soils seeds planted “hypocotyl end down” produced significantly less emerged seedlings (1% level) and a lower emergence rate. Orientation effects were observed to a lesser degree in noncrusted soils.

The adverse influence of “hypocotyl end down” orientations was attributed to seed rotation within the soil. For controlled plantings the “lay-flat” orientation is recommended due to both its high frequency of occurrence and high emergence.

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

Copyright © .