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This article in AJ

  1. Vol. 62 No. 4, p. 494-496
     
    Received: Nov 21, 1969


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doi:10.2134/agronj1970.00021962006200040018x

Relationship of Hybrid Sudangrass Plant Populations to Plant Growth Characteristics1

  1. Ethan C. Holt2

Abstract

Abstract

The number of plants established was not directly proportional to the number of seed planted in a seeding rate and row spacing study with a hybrid sudangrass (Sorghum bicolor (L.) Moench ✕ S. sudanense (Piper) Stapf,). At a fixed seeding rate more plants were established in narrow rows than in wide rows. Within a row spacing, percentage establishment decreased as seeding rate increased. Within a row spacing, plant size was inversely related to plant population so that yield per ha at maturity did not differ greatly. The largest plants were in wide rows; but at a fixed population level, plant size was greater in narrow than wide rows. LAI did not increase with increased plant numbers within a fixed row spacing. Within at least a two-fold difference in plant numbers, yield was not significantly influenced by seeding rate.

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