Phenology of Greater Yam (Dioscorea alata L.) Under Humid Tropical Conditions of Kerala

Authors

  • Sunitha S. Principal Scientist Division of Crop Production ICAR-CTCRI
  • Santhosh Mithra V. S. Principal Scientist ICAR-Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram-695017
  • Sreekumar J. Principal Scientist ICAR-Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram-695017
  • Sheela M. N. Head ICAR-Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram-695017

Abstract

Phenology of greater yam (Dioscorea alata L.) was studied by planting two greater yam varieties viz., Sree Keerthi and Sree Karthika for three seasons (2013, 2014 and 2015) at ICAR-CTCRI, Thiruvananthapuram, Kerala. Sree Keerthi took 16 to 23 days for sprouting, 88 days for tuber initiation, 236 to 243 days for senescence, which lasted for 24 to 39 days. Sree Karthika took 17 to 28 days for sprouting, 83 days for tuber initiation, 236 days for senescence which lasted for 26 to 45 days. Active tuber development was noticed between 6 to 8 months of planting (180 to 240 days). Timely planting resulted in more tuber yield in Sree Keerthi (26.4 to 31.5 t ha-1) than Sree Karthika (22.65 to 29.3 t ha-1). Delayed planting although resulted in early emergence and tuber initiation, senescence was also early resulting in yield loss in both the varieties. However, Sree Keerthi resulted in less yield loss compared to Sree Karthika, indicating its suitability for delayed planting.

Downloads

Published

2020-07-08

How to Cite

S., S., V. S., S. M., J., S., & M. N., S. (2020). Phenology of Greater Yam (Dioscorea alata L.) Under Humid Tropical Conditions of Kerala. JOURNAL OF ROOT CROPS, 46(1). Retrieved from https://journal.isrc.in/index.php/jrc/article/view/567

Issue

Vol. 46 No. 1 (2020): Journal of Root Crops 2020 46(1)

Section

Research Articles

License

Dear Author(s)

We need your written permission before we can publish your accepted article in the Journal of Root Crops.   Please read this form carefully, complete it and palace your signature below. A scanned copy of this form may be mailed to us within two days of receipt of this letter. Our email ID is: isrc_ctcri@yahoo.com  or    editor_jrc@yahoo.com  or sreekumarctcri@gmail.com 

 

Details:

In consideration of the publication in the Journal of Root Crops of our contribution entitled

(Name of the paper): .................................................................................................................

.................................................................................................................................................... by us (all Authors’ names) ..........................................................................................................

....................................................................................................................................................

 
   

 

 

A.  To be filled in if copyright belongs to you

                      I/we hereby assign to Indian Society for Root Crops, Thiruvananthapuram, India, the full copyright in all forms and media in the said contribution, including open/ restricted access to online version. They own the rights to freely grant or distribute the paper to any third party or public

    Please tick this box if you are the sole author of the paper

    Please tick this box if you are authorised to execute this copyright transfer on behalf of all the authors of the above article

 

Name (block letters): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......

Institution/Company:..................................................................................................................

....................................................................................................................................................

Signature:.....................................................................; Date: ....................................................

 
   

 

 

B. To be filled in if copyright does not belong to you

1. Name and address of copyright holder:................................................................................

........................................................................................................................................................................................................................................................................................................

 

2. The copyright holder hereby grants Indian Society for Root Crops, Thiruvananthapuram, India the full copyright in all forms and media in the said contribution, including open/ restricted access to online version. They own the rights to freely grant or distribute the paper to any third party or public.

 

 (Signature of copyright holder or authorised agent)