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ABSTRACT

 

This study aimed at determining the effect of granulation and compost enrichment to improve the effectivity of compost on green mustard, lettuce, kangkong, and spinach. The granulation treatments i.e without and with granulation and the enrichment using microbial cultures, the liquids from the rock phosphate fermentation, and the mixture of microbial cultures and the liquids from the rock phosphate fermentation were as treatments . The combinations of treatments were arranged using completely randomized block design with 20 replications. Variables observed were plant height, leaf number, fresh weight and dry weight. The data were analyzed using analysis of variance and foll owed by Duncan's Multiple Range Test. The results showed that there was no significant interaction between granulation with enrichment to improve the effectivity of compost on green mustard, lettuce, kangkong, spinach. The compost granulation treatment significantly increased the effectivity of compost on green mustard and lettuce, but not on kangkong and spinach. The granulation even decreased the compost effectiveness on spinach. The compost enrichments treatments significantly increased the effectivity of compost on green mustard, lettuce and spinach. The compost enrichments using the mixture of liquid fermentation medium of rock phosphate and microbial increased yield of green mustard and lettuce up to 48.4 and 60.1% respectively, while liquid fermentation medium of rock phosphate increased yield of spinach 75.0%.

Keywords: compost, granulation, enrichment, vegetable

 

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ABSTRACT

 

Guna mendukung keberhasilan budidaya sayuran secara vertikultur, media tanam dan aplikasi pupuk yang dilakukan merupakan factor yang sangat penting untuk diperhatikan. Oleh sebab itu, pengujian media tanam dan pupuk sebagai media dan sumber hara tanaman dalam sistem vertikultur masih sangat dibutuhkan. Penelitian ini bertujuan untuk mempelajari peran media tanam dan pupuk dalam mendukung pertumbuhan dan hasil selada, sawi, bayam dan kangkung dalam system vertikultur. Jenis media tanam yaitu pellet kompos dan kompos curah serta jenis pupuk organik melalui HPS-1, HB-101, serta control tanpa pupuk sebagai perlakuan. Pengkajian diatur menggunakan Rancangan Acak Kelompok (RAK) dengan 10 ulangan. Peubah pengamatan terdiri atas tinggi tanaman, jumlah daun, dan berat panen. Hasil penelitian menunjukkan bahwa tidak terdapat interaksi yang nyata antara perlakuan media dan pupuk pada setiap peubah pertumbuhan dan hasil selada, sawi, bayam, dan kangkung yang ditanam dalam sistem vertikultur rak talang bertingkat. Perlakuan pemeletan kompos yang dijadikan media tanam dalam system vertical rak talang bertingkat menurunkan pengaruhnya terhadap pertumbuhan dan hasil panen selada, namun tidak nyata berpengaruh terhadap pertumbuhan dan hasil sawi, bayam, dan kangkung.

Kata kunci: media, pupuk, vertikultur

 

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ABSTRACT

 

Tujuan dari penelitian ini adalah untuk menentukan kualitas fisiologis dan patologis benih padi. Percobaan dilakukan pada bulan Maret 2012 di Seed Sains dan Teknologi Laboratorium Teknologi Ilmu Perbenihan, Institut Pertanian Bogor dan Benih Laboratorium Kesehatan BBPPMB-TPH. Uji mutu fisiologis dilakukan dengan menggunakan metode antara kertas, uji kualitas patologis dilakukan menggunakan uji tinta dan metode pengujian cair. Hasil penelitian menunjukkan varietas benih padi Ciherang memiliki indeks 95% kekuatan, 98% perkecambahan, 20,66% sedling yang normal etmal-1 kecepatan perkecambahan, 0,15 g kecambah normal berat kering, dan tingkat pertumbuhan bibit 6.31 mg / sedling normal. Varietas benih padi HIPA 8 memiliki indeks 49% kekuatan, 77,25% perkecambahan, 8.24% sedling yang normal etmal-1 kecepatan perkecambahan, 0,10 g berat kering bibit normal, dan 6 mg / laju pertumbuhan sedling kecambah normal. Hasil pengujian benih berkualitas patologis menunjukkan Alternaria sp (6,5%), Fusarium sp. (24%), Drechslera sp. (4%), Curvularia sp. (22,25%), Xanthomonas oryzae pv. oryzae (3.32 x 109 cfu-g 1) dan Erwinia sp. (5.10 x 102cfu g-1) ditemukan sebagai bijiditanggung jamur dan bakteri varietas benih padi Ciherang. Alternaria sp (32%), Fusarium sp. (31,25%), Penicillium (1,25%), Curvularia sp. (43,75%), Cladosporium sp. (0,75%), X. oryzae pv. oryzae + X. campestris pv. oryzicola (6.63 x 109cfu g-1) dan Clavibacter sp. (5.47 x 103cfu g-1) ditemukan sebagai biji-ditanggung jamur dan bakteri dari benih padi varietas HIPA 8. 

Kata kunci: bakteri terbawa benih, jamur terbawa benih, kesehatan benih, viabilitas, vigor

 

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ABSTRACT

 

This study aimed to determine the effect of enrichment to effectiveness of liquid fertilizer from fermented household garbage on green mustard, lettuce, spinach, and kangkong. Post-scale test conducted in green house of Assessment Institute for Agricultural Technology of Jakarta. The treatments consists of without enrichment, enrichment using mixed microbial cultures, liquid fermented of phosohate rock, and the combination of microbial culture and liquid fermented of phosohate rock. Observation variables included plant height, leaf number, and fresh and dry weight yields. The test results showed that the enrichment significantly increases the effectiveness of liquid fertilizer from fermented household gargabe on green mustard, lettuce, spinach, and kangkong. Enrichment using mixed microbial cultures and liquid fermented of rock phosphate is the best treatment to increasing the effectiveness of liquid fertilizer from household garbage.

Key word: enrichment, effectiveness, liquid fertilizer

 

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Seed coating using biological pesticides such as clove oil and citronella oil, was expected to have the ability to control seed-borne pathogens on rice. The aim of the research was to determine the effectiveness of seed coating using clove oil and lemon grass oil against seed-borne fungi and bacteria on rice seed variety “Hipa 8” during storage. The experiment was conducted in Cimanggis, from February to September 2012, using completely randomized design with single factor, consisting of four levels: (1) clove oil 1% + chitosan 3%; (2) lemon grass oil 2% + carboxymethyl-cellulose 1%; (3) Synthetic pesticide (streptomycin sulphate 0.04% + benomyl 0.1%) + arabic gum 10%; and (4) control (without coating). Results showed that seedborne fungi pathogens on seed of Hipa 8 rice were detected at 6-month storage consisted of Fusarium sp., Curvularia sp., Alternaria sp., Cladosporium sp., Aspergillus sp. and Penicillium sp. The detected pathogenic bacteria were Xanthomonas oryzae pv. oryzae and X. campestris pv. oryzicola. Coating formula most compatible with the rice seed of HIPA 8 was chemical pesticide + 10% arabic gum, which suppressed fungal infection from 80% to 45% at the first month and from 90% to 70% at the fifth month, suppressed populations of Xoo + Xco from 7.6 x 108 cfu/g of seed to 5.86 x 105 cfu/g of seed at the first month and 7.0 x 106 cfu/g of seed to 1.4 x 104 cfu/g of seeds at the sixth month. The treatment caused the smallest decrease of seed viability compared to the other coating treatments.

Keywords: Bacteria; clove oil; lemon grass oil; natural pesticide

 

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