Uji Efektifitas Pupuk Mikro Zink Sulphate Terhadap Pertumbuhan Dan Produksi Selada (Lactuca Sativa L.)

Abstract

The objective of the reseach is to study the effectivity of micro zinc sulphate fertilizer on the growth and production of lettuce (Lactuca sativa L.). The research was done at Kwala Bekala field kelurahan Sidomulyo Kecamatan Medan Tuntungan on Juli 2007 until September 2007. The study applied Randomize Block Design (RBD) non factorial with five treatments namely: Z0 (control), Z1 (NPK 1,25 g/plant), Z2 (NPK 1,25 g/ plant + Zink 0,01 g/ plant); Z3 (NPK 1,25 g/ plant + Zink 0,02 g/ plant); Z4 (NPK 1,25 g/ plant + Zink 0,03 g/ plant) with 4 replications of treatment for each. The parameter observed is the height of plant, total of leaf, biomass product per plant, fresh product per plant, shoot/root ratio, and harvest index. The result of the research showed that the biomass product per plant, fresh product per plant, shoot/root ratio and harvest index were significantly affected by the micro zinc sulphate fertilizer, but the height of plant and total number of leaf unsignificantly affected