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Relationship of Hybrid Sudangrass Plant Populations to Plant Growth Characteristics 1
Author(s) -
Holt Ethan C.
Publication year - 1970
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1970.00021962006200040018x
Subject(s) - seeding , agronomy , row , yield (engineering) , mathematics , population , biology , plant density , sorghum , sowing , physics , demography , database , sociology , computer science , thermodynamics
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.