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Differential Response of Sugarbeet Populations to Herbicides 1
Author(s) -
Smith G. A.,
Schweizer E. E.,
Martin S. S.
Publication year - 1982
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1982.0011183x002200010018x
Subject(s) - biology , population , betaine , sucrose , cultivar , agronomy , hybrid , horticulture , nitrate , sodium , dry weight , zoology , chemistry , food science , biochemistry , ecology , demography , organic chemistry , sociology
Fifteen sugarbeet ( Beta vulgaris L.) populations consisting of five inbred lines, five F 1 hybrids, and five commercial cultivars were evaluated 2 years for their response to certain herbicide regimes. The populations were assessed primarily by determining the nature and magnitude of first and second order interactions. The treatment regimes consisted of cycloate (3.4 kg/ha) or ethofumesate (2.2 kg/ha) applied preplant followed by a postemergence mixture of desmedipham and phenmedipham each applied at 0.6 kg/ha. A third treatment regime was that of no herbicide application. The 10 characters examined were: root weight, sucrose, purity, sodium, potassium, nitrate, betaine, amino N, chloride, and foliar suppression. Genetic control of the response to herbicide application was exemplified by significantly different population reactions for the majority of the 10 characters studied. When the entire array of 15 populations was analyzed, a significant year ✕ population interaction was detected for eight characters. Further, significant first order interactions were those of year ✕ herbicide for root weight and herbicide ✕ population for foliar suppression. No significant second order interactions were found. Several chemical components of juice, foliar suppression, and root weight showed significant first order interactions, but only in the group of five commercial cultilvars. In general, root weight, sucrose, and purity were slightly reduced, whereas chloride, nitrate, and betaine were increased following herbicide application. The most prominent effect of herbicide treatment was suppression of foliar growth. Both pre‐ and postemergence treatments suppressed the population groups in the order: inbreds > F 1 hybrids > commercial cultivars.