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All Journal Agrikultura Kultivasi Soil REns Agrikultura Masyarakat Tani: Jurnal Pengabdian kepada masyarakat
Risanti, Rara Rahmatika
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Agriculture, Biological Sciences & Forestry

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Effect of NPK and Bacillus-coated NPK fertilizer on biomass, nutrient content in soil and nutrient uptake by lettuce Hindersah, Reginawanti; Setiawati, Mieke Rochimi; Suryatmana, Pujawati; Fitriatin, Betty Natalie; Aditya, Fasa; Nugraha, Gita Bina; Risanti, Rara Rahmatika; Asmiran, Priyanka
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.
Enhancing Tomato (Lycopersicon esculentum Mill.) Growth in a Green House Using NPK Fertilizer Coated with Endospore-Forming Bacillus Hindersah, Reginawanti; Fitriatin, Betty Natalie; Setiawati, Mieke Rochimi; Suryatmana, Pujawati; Risanti, Rara Rahmatika; Dewi, Yeni Wispa
Agrikultura Vol 36, No 1 (2025): April, 2025
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v36i1.62354

Abstract

Long-term use of NPK composite fertilizers mixed with biofertilizers, including spore-forming Bacillus rhizobacteria, can improve plant quality and growth. This study aims to analyze Bacillus’s growth and spore production in chemical-liquid growing media and to observe the effects of Bacillus-coated NPK formulas (BCN) on the growth of tomatoes in potted Andisol and the Bacillus population in the rhizosphere. The evaluation of Bacillus growth was conducted in the laboratory whereas the effect of the BCN was conducted as a pot experiment in a Randomized Block Design. The treatments included recommended dosage of NPK 16-16-16, liquid inoculant of Bacillus consortium, BCN-C, and BCN-G formulas with 100%, 75%, and 50% of the recommended dosage, respectively. Control plants were not treated with fertilizer. Laboratory assay verified that Yuniarti’s medium supported Bacillus-consortium growth and produced the highest Bacillus vegetative cells and spores. The BCN application significantly increased plant height, number of leaves, root length, and tomato biomass compared to the control up to 6 weeks after planting. Three-quarters of the dosage of BCN-C and BCN-G gave the best growth of tomatoes. Introducing BCN and conventional NPK did not change the population of Bacillus vegetative and spore form in the rhizosphere. Results indicate that BCN can replace conventional NPK 16-16-16 fertilizer for tomato plants in Andisol soil order.
Bacillus-Coated Inorganic Fertilizer to Improve Plant Growth and Bacillus Count in the Rhizosphere of Broccoli Hindersah, Reginawanti; Setiawati, Mieke Rochimi; Suryatmana, Pujawati; Fitriatin, Betty Natalie; Chotimah, Andina; Dewi, Yeni Wispa; Risanti, Rara Rahmatika
Soilrens Vol 23, No 1 (2025)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v23i1.66092

Abstract

Inovasi pupuk Bacillus pembentuk endospora berlapis NPK diharapkan dapat mengatasi rendahnya ketersediaan fosfat pada tanah Andisol. Telah dilakukan percobaan pot untukmenganalisis dampak berbagai dosis dua jenis BCN terhadap pertumbuhan dan biomassa brokoli,serta terhadap populasi Bacillus di rizosfernya. Percobaan disusun dalam rancangan blok acak untukmenguji kombinasi jenis dan dosis BCN dibandingkan dengan NPK dan inokulan cair Bacillus. Tidakada kombinasi jenis dan dosis BCN yang mempengaruhi pertumbuhan brokoli umur 6 minggu,meskipun 100% BCN-B meningkatkan tinggi tanaman pada 2 minggu. Biomassa akar meningkatsetelah aplikasi 75% BCN-A, sedangkan 100% BCN-B meningkatkan biomassa pucuk. Populasi sporameningkat pada rizosfir tanaman dengan 100% BCN-B dan 75% dari kedua jenis BCN namun totalpopulasi sel vegetatif tidak dipengaruhi oleh BCN. Percobaan ini menyarankan penggunaan BCNuntuk meningkatkan pertumbuhan brokoli.
Mikroba Tanah Sebagai Biostimulan untuk Tanaman Sayuran di Desa Karyawangi, Kecamatan Parongpong, Kabupaten Bandung Barat, Jawa Barat Hindersah, Reginawanti; Fitriatin, Betty Natalie; Setiawati, Mieke Rochimi; Risanti, Rara Rahmatika
Agrikultura Masyarakat Tani Vol 2, No 2 (2025): Maret
Publisher : Fakultas Pertanian, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrimasta.v2i2.62463

Abstract

Produksi tanaman sayuran di Kabupaten Bandung Barat masih bertumpu pada pupuk kimia padahal pupuk berbasis mikroba berpotensi menggantikan sebagian pupuk kimia. Tujuan program pengabdian pada masyarakat (PPM) di Desa Mekarwangi, Kecamatan Parongpong, Kabupaten Bandung Barat adalah 1) meningkatkan pengetahuan petani mengenai peran mikroba di dalam tanah, 2) memberikan pengetahuan  mengenai peran pupuk hayati dan biostimulan terhadap pertumbuhan tananaman  dan manjeman nutrisi dan 3) melakukan demonstrasi plot (Demplot)  aplikasi mikroba penghasil  biostimulan pada tanaman selerdri.  Sasaran PPM adalah kelompok tani sayuran di desa Mekarwangi dan dilaksanakan melalui diskusi, sosialisasi dan demplot. Program ini  meningkatkan pengetahuan petani mengenai mikroba di dalam tanah dan biostimulan, tetap lebih banyak petani yang belum meyakini perannya produksi tanaman sayuran. Namun demplot memperlihatkan bahwa mikroba berupa pupuk hayati dapat mengganti pupuk NPK untuk satu kali musim tanam seledri. Interaksi dan komunikasi intensif dengan kelompok tani perlu diperkuat agar partisipasi petani dalam demplot meningkat. Pada PPM jangka panjang diperlukan untuk meningkatkan minat petani untuk menggunakan produk berbasis mikroba tanah menguntungkan yang mereka kenal sebagai pupuk hayati. 
Co-Authors Aditya, Fasa Asmiran, Priyanka Betty Natalie Fitriatin Chotimah, Andina Dewi, Yeni Wispa Mieke Rochimi Setiawati Nugraha, Gita Bina Pujawati Suryatmana Reginawanti Hindersah