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Carrot Population Density and Yield in an Arid Environment 1
Author(s) -
Robinson Frank E.
Publication year - 1969
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/agronj1969.00021962006100040004x
Subject(s) - dry matter , hectare , daucus carota , arid , irrigation , agronomy , yield (engineering) , population , mathematics , plant density , population density , biology , horticulture , sowing , physics , agriculture , ecology , demography , sociology , thermodynamics
Five plant densities of carrots, Daucus carota L. cultivar ‘Long Imperator #58,’ were studied under sprinkler irrigation in the arid Imperial Valley, California. Carrots on a 10‐cm square grid (870,000 per hectare) produced the least dry matter but the earliest roots of marketable size (35 T/ha). Twenty‐five days later plants in a 5.1‐cm square grid (3,370,000 plants per ha) produced both greater dry matter yields and yields of roots of marketable size (94 T/ha). The three greater densities of 13,590,000, 54,390,000, and 223,050,000 plants per ha produced greater dry matter yields but did not reach marketable size. Root‐to‐top ratios were approximately 1:1 in the two greatest densities and 2:1 in the three lowest densities.