Puerto, Ricarte M. <br/><br/>
Effects of topping and population density on yield of VISCA sweet potato no. 2 (Ipomea batatas, Lam.) / 
by Ricarte M. Puerto. 
 - Indang, Cavite,  Cavite State University- Main Campus,  1986. 
 - 43p. : ill. ; 28 cm  illustrations ;      cm. 
<br/><br/> Thesis (B.S.A.--Agronomy) Don Severino Agricultural College 
<br/><br/>Includes bibliographical references. 
<br/><br/> The experiment was conducted to find out the effects of topping and population density on yield of ViSCA sweet potato number two (VSP-2). Both the topped and untopped plants showed no significant differences at varying population density in terms of number of market-able cormels per plant. However, significant results were observed on the length, diameter and weight of tubers from varying population density.<br/><br/>As VSP-2 increases its population density from 40,000 to 200,000 plants per hectare, there is a corresponding increase in yield but the tuber length and diameter obtained from the sample plants gradually decreases.<br/><br/>The result could be attributed to competition between plants for light, nutrients, space and moisture.<br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sweet potatoes
<br/><br/><label>Dewey Class. No.: </label>635.22   / P96 1986