PERBAIKAN EFISIENSI PEMUPUKAN P PADA JAHE EMPRIT)
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Date
2004-07-14
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balai penelitian tanaman rempah dan obat indonesian Spice and medicinal Crops Research institute
Abstract
s been done by using Organic fertilizer and
biofertilizer, in Order to reduce the use Of
inorganic fertilizers,
as well as to zeduce
environmental pollution. This experiment was aimed
to study Of using rock phosphate, zeol ite and
biofertilizers in order to improve phosphate use
efficiency on small ginger production.
The field experiment was carried out at
Kecama tan Ampel , Kabupaten Boyolali, which is
located at elevation 800 asl,
soi 1 type is
Andosol, from October 2001 to August 2002, using
randomized block design, with 9 treatments, i.e.
(1) 350 kg rock phosphate + 140 kg biofertilizer,
(2) 175 kg rock phosphate + 140 kg biofertilizer,
(3) 300 kg sp-36 + 140 kg biofertilizer, (4) 150
kg SP-36 + 140 kg biofertilizer, (5) 350 kg rock
phosphate + 140 kg biofertilizer + 400 kg zeolite,
(6) 175 kg rock phosphate + 140 kg biofertilizer +
(7) 300 kg SP36 + 140 kg
4 00 kg zeolite,
biofertilizer + 400 kg zeolite, (8) 150 kg SP36 +
140 kg biofertilizer + 400 kg zeolite, and (9) 300
Basic fertilizers, were 20
kg SP36 per hectare.
ton/ ha manure, 500 kg Urea /ha and 400 kg KCI/ha,