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All Journal Kultivasi Composite: Jurnal Ilmu Pertanian
Rara Rahmatika Risanti
Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Veterinary

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Effect of NPK and Bacillus-coated NPK fertilizer on biomass, nutrient content in soil and nutrient uptake by lettuce Reginawanti Hindersah; Mieke Rochimi Setiawati; Pujawati Suryatmana; Betty Natalie Fitriatin; Fasa Aditya; Gita Bina Nugraha; Rara Rahmatika Risanti; Priyanka Asmiran
Kultivasi Vol 22, No 1 (2023): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v22i1.43608

Abstract

The Inoculation of beneficial soil microbes is an effective method for lowering doses of inorganic fertilizers. This study was aimed to observe and compare the effect of doses and formulas of Bacillus-coated NPK (BCN) and conventional NPK fertilizers on biomass, major macro-nutrient in soil and their uptake by shoots of lettuce (Lactuca sativa L.); as well as evaluate the potency of BCN for decreasing doses of NPK fertilizers. The greenhouse experiment was set up in a randomized block design with seven treatments and five replications. The treatments included one and a half doses of recommended NPK fertilizer and two BCN fertilizer formulas; control treatment was without any fertilizer. This experiment showed that NPK fertilizer had comparable effect with BCN on growth traits; but application of NPK and coated NPK had a potency to increase the fresh weight of lettuce up to 24-45% which was in line with the increase of shoot-to-roots ratio. The potassium (K) content in soil and their uptake in lettuce shoots depend on doses and type of NPK but Nitrogen (N) and Phosphorus (P) content in soil and in shoot were not determined by treatments. The results showed that the recommended NPK dose (200 kg/ha) for lettuce can be reduced up to 50%; moreover, 50% of BCN enabled to maintain the N, P and K uptake as well as the lettuce yield.
Pengaruh pemberian inokulan Azotobacter sp. dan bahan organik dalam fitoremediasi tanaman rami (Boehmeria nivea) pada tanah yang dicemari limbah minyak bumi Rara Rahmatika Risanti; Pujawati Suryatmana
Composite: Jurnal Ilmu Pertanian Vol 1 No 2 (2019): Juli
Publisher : University of Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/composite.v1i2.153

Abstract

Fitoremediasi dalam tanah yang terkontaminasi dengan petroleum hidrokarbon adalah teknologi untuk meremediasi kontaminan menggunakan tanaman sebagai fasilitator ketersediaan nutrisi untuk mendegradasi mikroba di perakaran. Fitoremediasi dapat ditingkatkan oleh inokulan Azotobacter sp. Untuk meningkatkan kesuburan tanah, juga menghasilkan biosurfaktan. Penelitian ini bertujuan untuk menguji pengaruh interaksi dari inokulan Azotobacter sp. dan bahan organik berupa pupuk kandang sapi dalam fitoremediasi tanaman rami pada tanah yang dicemari limbah minyak bumi. Penelitian ini dilakukan di Laboratorium Biologi Tanah dan Rumah Kaca Fakultas Pertanian, Universitas Padjadjaran dari bulan Februari 2019 sampai dengan April 2019. Metode penelitian ini menggunakan Rancangan Acak Kelompok pola faktorial, faktor pertama adalah inokulan bakteri: (a0) tanpa inokulan dan (a1) inokulan Azotobacter sp. dan faktor kedua adalah bahan organik dengan dosis yang berbeda: (b0) dosis 0% dan (b1) dosis 100%. Hasil penelitian menunjukan bahwa terdapat interaksi antara inokulan bakteri Azotobacter sp. dan tanpa pemberian bahan organik dapat meningkatkan berat kering akar pada tanaman rami.
Co-Authors Betty Natalie Fitriatin Fasa Aditya Gita Bina Nugraha Mieke Rochimi Setiawati Priyanka Asmiran Pujawati Suryatmana Reginawanti Hindersah