PENGARUH LENGAS TANAH TERHADAP PERTUMBUHAN DAN HASIL TIGA VARIETAS LOKAL BAWANG MERAH PADA KETINGGIAN TEMPAT BERBEDA

Muhammad Anshar, Tohari Tohari, Bambang Hendro Sunaminto, Endang Sulistyaningsih

Abstract


Pot experimental research under green house condition was carried out in Yogyakarta during March-Mei 2009. The aim of the experiment was to determine the influence of soil moisture on growth and yield of local-varieties shallots (Palasa, Palu and Sumenep) at different elevations. The experiment was arranged in a Split Split Plot Design with three replications. The main plot was local varieties of shallot: (1) Palasa; (2) Palu; and (3) Sumenep. The sub-plot were soil moisture (field capacity percentage - % FC), included: (1) 50% FC; (2) 100% FC; and (3) 150% FC. Each variety has a different response to different soil moisture and altitude places.  Sumenep variety had the lowest net assimilation rate (NAR) and Palasa variety produced smallest fresh-bulb at all soil moisture and elevation. Soil moisture at 100% FC increased crop growth rate (CGR) and bulb’s fresh-weight per crop bunch of Palu variety particularly on elevation 100 m above sea level, whereas 50% FC reduced shallot growth and yield on all elevation.

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