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Sjarif Avitidjadi Adimihardja
Universitas Djuanda
Agriculture, Biological Sciences & Forestry

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EFFICACY OF SEVERAL MULTIPLE LIQUID BIOFERTILIZERS ON THE GROWTH AND PRODUCTION OF SWEET CORN (Zea mays L. saccharata) Mutiara Yaumalika; Arifah Rahayu; Sjarif Avitidjadi Adimihardja
JURNAL AGRONIDA Vol. 3 No. 1 (2017)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.203 KB) | DOI: 10.30997/jag.v3i1.1010

Abstract

This study was aimed at assessing the efficacy of several multiple liquid biofertilizers found in the market on the growth and production of sweet corn. A factorial completely randomized design was used. The first factor was the type of multiple liquid biofertilizers (PHMC) consisting of three levels, namely PHMC 1, PHMC 2, and PHMC 3. The second factor was synthetic fertilizer rates consisting of five levels, namely 0, 25, 50, 75, and 100% of recommended rate (R). Results showed that the application of PHMC 3 combined with synthetic fertilizer treatments (05 R and 25% R) significantly increased  stem diameter (8 WAP). Plants treated with PHMC 3 application were found to have significantly higher number of leaves than those treated with PHMC 2 application at 6 WAP. Plant height, number of leaves, and weight, length, and circumference of main cob of plants treated with 50%R synthetic fertilizer were higher than those of plants treated with 0%R and 25%R synthetic fertilizer. Meanwhile, plants treated with 75%R synthetic fertilizer were found to have better values for girth, leave width, flowering time, harvesting time, number of cobs, dry weight of shoots and roots, grain total soluble solids (TSS) content, and cobs weight  than those of plants treated with 0, 25, and 50%R synthetic fertilizer. Key words: sweet corn, multiple liquid biofertilizers, TSS, synthetic fertilizer.
PERTUMBUHAN DAN PRODUKSI VARIETAS SELADA (Lactuca sativa L) PADA BERBAGAI DOSIS PUPUK ORGANIK RUMPUT LAUT Sulton Zainal Abidin; Oktavianus Lumban Tobing; Sjarif Avitidjadi Adimihardja
JURNAL AGRONIDA Vol. 3 No. 2 (2017)
Publisher : Universitas Djuanda Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (771.847 KB) | DOI: 10.30997/jag.v3i2.1041

Abstract

Lettuce (Lactuca sativa L.) is a widely known leave vegetable.  This vegetable is so rich in nutrient contents particularly vitamins and minerals that people can consume it to meet their nutrient requirements.  This study was aimed at assessing the effects of sea grass organic fertilizer administration on the growth and production of lettuce.  The study was conducted at the trial farm of Department of Agrotechnology, Faculty of Agriculture, Djuanda University, Bogor from March to April 2014.  A completely randomized design with two factors consisting of lettuce variety (V) and sea grass organic fertilizer (R) was used.  The varieties of lettuce consisted of curly lettuce (Lactuca sativa var. New grand rapid) (V1) and red lettuce (Lactuca sativa var. new red fire) (V2).  Sea grass organic fertilizer (R) was given in three levels, namely no fertilizer (R0), 500 kg/ha (0.5 recommended rate) (R1), 1000 kg/ha (1.0 recommended rate) (R2),  1500 kg/ha (1.5 recommended rate) (R3), and 2000 kg/ha (2.0 recommended rate) (R4).   Keywords: lettuce variety, sea grass organic fertilizer, growth and production.
Co-Authors Mutiara Yaumalika Oktavianus Lumban Tobing Rahayu, Arifah Sulton Zainal Abidin