World Journal of
Pharmaceutical and Life Sciences

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Pharmaceutical and Life Sciences
An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)
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Abstract

EVALUATION OF LEAD (PB) CONTAMINATION IN GT1 CLONE RUBBER SEEDLINGS USING A COMBINATION OF ORGANIC AND INORGANIC FERTILIZERS

Eva Yanti Manihuruk, Yayuk Purwaningrum*, Muhammad Rizwan

ABSTRACT

Lead (Pb) is a hazardous heavy metal that can contaminate the environment and inhibit the growth of rubber seedlings. This study evaluated the effects of combining organic (tankos) and inorganic (NPK) fertilizers on Pb accumulation and the growth of GT1 and PB260 rubber seedlings. The method used was a factorial Split-Plot Design (SPD) with two factors: Clone as the main plot and fertilizer combination (0%, 25%, 50%, 75% tankos + NPK) as the subplot, repeated three times. The results showed that the application of NPK and tankos affected soil chemical properties, increasing K-dd, but had no significant effect on P-Bray I, organic C, and total N. No Pb contamination was found in the seedlings, indicating that fertilization remained within safe limits. This study serves as a guide for environmentally friendly fertilizer management, supports the growth of healthy rubber seedlings, and enhances future rubber tree productivity.

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