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Pea Responses to MCPB Applications At Different Growth Stages 1
Author(s) -
Vostral Henry J.,
Buchholtz Kenneth P.
Publication year - 1966
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/cropsci1966.0011183x000600040003x
Subject(s) - pisum , sativum , biology , point of delivery , bloom , acre , horticulture , sowing , botany , zoology , agronomy , ecology
‘Alaska’ and ‘New Line Early Perfection’ pea ( Pisum sativum L.) varieties responded similarly to 1 pound per acre of 4‐(2‐methyl‐4‐chlorophenoxy) butyric acid (MCPB) at comparable growth stages. Low yields of shelled peas were correlated with reduced numbers of pods formed on the lower bloom nodes. Shelled‐pea yields of both varieties were not reduced by treatments lnade at least three nodes before initial bloom. MCPB applications during a period commencing two nodes prior to initial bloom and continuing up to pod swelling, reduced shelled‐pea yields. Yield reductions were associated with high tenderometer readings, reduced pod numbers, and reduced pea seed numbers per plant.