02884nam a22001457a 4500003000400000005001700004008004100021040001400062100003100076245012300107260000900230300002800239500006100267520241000328OSt20210920160204.0210920b        |||||||| |||| 00| 0 eng d  aMMSUcULS  aLagazo, Maria Jhelicca M.   aResponse of sweet potato varieties to varying rates of carrageenan plant growth regulator / cMari Jehllica M. Lagazo   c2019  axvi, 62 leaves c28 cm.  aThesis (BS Arg (Hort) - Mariano Marcos State University   a		ABSTRACT

LAGAZO, MARIA JHELLICA M. 2019. Response of Sweet Potato
Varieties to varying Rates of Carrageenan Plant Growth Regulator.
Undergraduate Thesis. College of Agriculture, Food and Sustainable Development
Mariano Marcos State University, City of Batac, 2906 Ilocos Norte. 61 pp.
Adviser: Dr. Artemio B. Alcoy
Co-adviser: Mr. Pio G. Belen, Jr.
	
	A study on the response of sweet potato varieties to varying rates of
carrageenan plant growth regulator (CPGR) was conducted from November 8, 2018
to February 16, 2019 at the Mariano Marcos State University Experimental Farm.
City of Batac, Ilocos Norte. The study aimed to: a) compare the agronomic
performance of two sweet potato varieties; b) evaluate the growth and yield response
of sweet potato to different rates of CPGR; c) identify the most appropriate rate of
CPGR that could give the highest yield; d) determine the interaction between sweet
potato varieties and different rates of CPGR; and e) assess the production economics
of sweet potato production applied with different CPGR rates. The field experiment
was laid out in Strip-plot in Randomized Complete Block Design (RCBD).
	The sweet potato varieties (NSIC Sp25 and PSB Spl) served as the vertical
factor and the rates of CPGR (7.5, 10 and 12.5 1 ha') as the horizontal factor. The
experimental unit plot size used was 5 mx 4 m (20 m').
Results revealed significant difference between NSIC Sp25 and PSB Spl on
vine length, vine weight and percentage of small-sized roots. Between the two varieties, NSIC Sp25 produced longer vines, heavier vine weight per plant and higher
percentage of small-sized roots. Moreover, significant differences were revealed
among CPGR rates in terms of vine weight, root yield, percentage of medium-sized
and large-sized roots and percent marketable roots.
Analysis of variance also revealed significant interaction between sweet
potato variety and CPGR rates in terms of vine weight, root yield and small- and
medium-sized roots.
	The sweet potato variety NSIC Sp2S is recommended for higher profitability.
On the other hand, the application of 7.5 1 ha'' CPGR which gave the highest
production of marketable root yield should be adapted in sweet potato production.
However, it is further recommended that a similar research along this line be
conducted using other varieties of sweet potato to verify and come up with a more
conclusive result.