PAPER TITLE :EFFECTS OF AGE AT TRANSPLANTING ON THE GROWTH AND VIGOUR OF CLEOPATRA MANDARIN (CITRUS RETICULATA BL

APPLIED TROPICAL AGRICULTURE | VOLUME 15 NUMBER 1 2010

Paper Details

  • Author(s) : S.K. OGUNDARE AND J.A. FAGBAYIDE
  • Abstract:

An experiment was carried out at the National Horticultural Research Institute of Nigeria (NIHORT), Ibadan, Nigeria
between August 1999 and March 2000 to examine the effects of age at transplanting on the growth and vigour of the
rootstocks and the time the rootstock seedlings attain buddable size in Cleopatra manadarin seedlings. Cleopatra
mandarin (Citrus reticulate Bianco) seedlings were transplanted from the pre-nursery to the main nursery at 4, 4 ½,
5, 5 ½. 6, 6 ½ and 7 months after the seeds were sown in the pre-nursery. The rate of seedling survival and increases
in stem diameter of four to five months old transplants were higher than seedlings transplanted at five and half to
seven month old. Also, younger seedlings (4 to 5 ½ months old) compete favourably with older seedlings (5 ½, to 7
months old seedlings) in rate of increase in height, leaf production and leaf area increase. However, production of
branches was higher in older seedlings which is undesirable in citrus seedling production. Since stem diameter is a
major growth factor at this stage of citrus development, it is concluded therefore that Cleopatra mandarin rootstock
seedling should be transplanted from the pre-nursery to the main nursery between the ages of four to five months to
increase rootstock turn over rate.