HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Kittock, D. L. Articles by Williams, J. H. Search for Related Content PubMed Articles by Kittock, D. L. Articles by Williams, J. H. Agricola Articles by Kittock, D. L. Articles by Williams, J. H.

Influence of Planting Date on Certain Morphological Characteristics of Castorbeans¹

Castorbean (Ricinus communis L.) plants were taken from irrigated and nonirrigated date-of-planting tests for 3 years to determine the effect of planting date on plant morphology. Planting date had no effect on plant height, except where drought was a factor. Hypocotyl diameter at harvest was significantly smaller with later planting dates. The number of nodes below the primary raceme, the distance from soil surface to primary raceme, length of primary raceme, aiid yield of primary raceme were significantly higher on June 13 planting date for three of the four varieties for all years. Morphology of the fourth variety, ‘Cimarron Hybrid’, was not affected greatly by planting date. Morphology of secondary and subsequent racemes was not affected greatly by planting date.

Key Words: node number • raceme length • Ricinus communis L • raceme yield

² Formerly Assistant Professor (now Research Agronomist, Crops Research Division, ARS, USDA, University of Arizona Cotton Research Center, Phoenix 85040) and Associate Professor, University of Nebraska, Lincoln 68503

Received for publication January 11, 1968.