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Effects of Herbicides and Seeding Rates on the Production of Alfalfa 1
Author(s) -
Moline W. J.,
Robison L. R.
Publication year - 1971
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/agronj1971.00021962006300040030x
Subject(s) - seeding , agronomy , cutting , sowing , weed , biology , horticulture
Spring seedings of alfalfa ( Medicago satva L.) were established using various seeding rates and establishment treatments. During the year of establishment, average total dry matter yields of alfalfa increased with increased seeding rate. Seeding rates of 24 kg/ha produced alfalfa yields lower than those of the 3 kg/ha seeding rates in cuttings taken the year following seeding. Higher yields of alfalfa were obtained at the lower seeding rates of 3 and 10 kg/ha using EPTC and benefin than at seeding rates of 17 and 24 kg/ha using 2,4‐DB plus dalapon, oats, or check. Weed yields were reduced by all establishment treatments. The effect of establishment treatment was significant during the year of seeding, but not in the year following. Seeding rate effects remained significant throughout six cuttings taken the first two years of the trial. The use of preplant herbicides and seeding rates of 10 or 17 kg/ha were superior in establishing stands of spring seeded alfalfa.