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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal Solum

Nurhajati Hakim

Soil Science Department, Faculty of Agriculture Andalas University

Author-ID : 334682

Agriculture, Biological Sciences & Forestry Environmental Science

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PEMANFAATAN AGEN HAYATI DALAM BUDIDAYA TITONIA PADA ULTISOL Auzia Asman; Nurhajati Hakim; Agustian Agustian; Hermansah Hermansah
Jurnal Ilmu Tanah dan Lingkungan Vol 10 No 2 (2008): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Titonia could be used as alternative fertilizer to reduce up to 50% the chemical fertilizer aplication of chili, gardamon, maize, soybean and sweet potato. The titonia which grow as alley croping system(20 rows ha-1) could produced 6,6 -6,8 ton ha-1 y-1 of dry biomass with 2 months pruning period. This amount equal to 40 ton ha-1 y-1 of fresh biomass of titonia. Such amount of biomass content 150-240 kg ha-1 y-1 of N and 156 – 245 kg of K that could be used to replace the 50 % of chemical fertilizer. In the rhizosphere of titonia was observed the micro organism has role in increasing the production of biomass such as micorhizae, bacteria diluted P, Azotobacter, Azospirillium, and bacteria produced of phitohormon. We assume that the re-inoculation of those microorganism in to the rhizosphere of titonia might contribute in increasing of titonia biomass and nutrients yield. The study of the re-inoculation of such microorganism to the rhizosphere of titonia in order to find out the kind of micro organism which highly contributed in increasing of biomass was conducted. The study was conducted by using completed randomized designed with10 treatments and 5 replications. Those treatments are A=without reinoculation (control); B=bacteria diluted phosphate (bdp); C=Azotobacter; D=Azospirillium; E=bacteria produced phytohormon (bph); F=bdp+Azotobacter; G=bdp+Azospirillium; H=bdp+bph; I=bdp+Azotobacter+Azospirilliun; J=bdp+Azotobacter+Azosprilliun + bph. The result of study showed the combination of the reinoculation to the rhizospehere in increasing of biomass and nutrients yield of titonia were (1)Bacteria diluted phosphate; (2) Azospirillium; (3) Bacteri diluted phosphate + Azototobacter; (4) Bacteria diluted phosphate +Azospirillium; dan (5) Bacteria diluted phosphate +Azotobacter +Azospirillium.Keywords: Agen Hayati, Titonia, alternative fertilizer

EFISIENSI PEMUPUKAN P TANAMAN CABE PADA LAHAN INTENSIFIKASI YANG DIBERI BAHAN ORGANIK DENGAN TEKNIK P-32 Yulnafatmawita Yulnafatmawita; Lusi Maira; Junaidi Junaidi; Yusmini Yusmini; Nurhajati Hakim
Jurnal Solum Vol 3, No 1 (2006): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Phosphorous (P) is one of plant nutrient needed by plant in much amount as it is called as macro essential plant nutrient. This element, P, has complete problems. It is not only found in a small amount in soil compared to other nutrients, but it also has some problems in soil if it is there. At acid soils such as Ultisols, phosphorous is binded by aluminium (Al) and iron (Fe), while in basic soils it is held by calcium (ca) and magnesium (Mg). Therefore, both in acid soils or basic soils P is not available for plant growth. A research about P-fertilizer use efficiency for chilli (Capsicum annum) on intensification land which was added organic matter (OM) using P-32 technique was conducted in glasshouse and soil laboratory of Agricultural Faculty, and in laboratory of center for research utilizing nuclear science and technique (P3IN) Andalas University Limau Manis Padang from 1996 to 1997. The objective of this research was to measure P-fertilizer use efficiency (FUE) by chili on horticulture intensification area (on Andisols) as affected by organic matter. This research was designed as completely randomized design (CRD) with 2 factors those were TSP (consisting of 0, 25, and 50 kg P2O5/ha) and OM especially chicken manure (consisting of 2, 4, 6, 8, and 10 ton/ha) by 3 replications. The results showed that plant dry matter became higher by decreasing P-fertilizer added but was not significantly affected by manure. P-fertilizer (P-32) uptake by plants was not significantly affected by P-fertilizer and manure aapplication, therefore P-FUE decreased by increasing P-fertilizer added and tended to increase by increasing dosage of manure applied. Key words: fixed-P, available-P, desorpted-P, FUE, P-32 technique

PERANAN BAHAN ORGANIK DALAM PEMBEBASAN P-TERIKAT PADA TANAH ANDISOL Yulnafatmawita Yulnafatmawita; Lusi Maira; Junaidi Junaidi; Yusmini Yusmini; Nurhajati Hakim
Jurnal Solum Vol 2, No 2 (2005): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

A research about organic matter role on P desorption in Andisol was conducted in soil laboratory of Agricultural Faculty, Andalas University Limau Manis Padang. The objective of this research was to find out the ability of organic matter to change retained- or fixed-P into available-P in Andisols. This research was designed as completely randomized design (CRD) with 5 levels of chicken manure consisting of 2, 4, 6, 8, and 10 ton/ha by 3 replications. Based on laboratory analysis, the soil (Andisols) had pH 5.65, OC 2.33%, N-total 0.26%, available-P 56.94 ppm, and potential-P 60.38 mg/100 g soil. While chicken manure had OC 21.45%, total-N 5.60%, total-P 33.19 mg/100g and C/N ratio 3.83. The results showed that desorpted-P increased by increasing amount of chicken manure applied. Key words: fixed-P, available-P, desorpted-P

APLIKASI UNSUR MIKRO PADA PADISAWAH INTENSIFIKASI YANG DIBERI PUPUK ORGANIK TITONIA PLUS PADA METODE SRI Nalwida Rozen; Nurhajati Hakim; Gusnidar Gusnidar
Jurnal Solum Vol 14, No 1 (2017): JURNAL SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Penggunaan pupuk sintetik merupakan faktor penentu produksi terbesar, tetapi harganya makin mahal, sehingga menjadi masalah nasional. Oleh karenanya, pupuk alternatif harus ditemukan, salah satunya adalah POTP. Pupuk organik titonia plus (POTP) dapat mengurangi aplikasi pupuk sintetik hingga 50% dalam meningkatkan hasil padi pada sawah bukaan baru di Dharmasraya, serta sawah intensifikasi di Padang, Solok, dan di Tanah Datar. Akan tetapi, hasil padi pada sawah intensifikasi dengan POTP tersebut masih sekitar 6 ton/ha, pada hal hasil optimal yang diharapkan dengan POTP sekitar 8 ton/ha. Hal itu diduga akibat adanya gejala kekurangan unsur hara mikro. Unsur hara mikro apa yang diperlukan dalam pembuatan POTP belum diketahui. Tujuan penelitian ini adalah: untuk melengkapi formula POTP dengan unsur hara mikro untuk mengurangi aplikasi pupuk sintetik hingga 50% pada sawah intensifikasi dengan target hasil gabah sekitar 8 ton/ha. Hasil penelitian sebelumnya didapatkan 3 kombinasi Mn dan Zn yang ditambahkan dalam pembuatan POTP. Tiga formula POTP tersebut telah diteliti di lapangan pada dua lokasi sawah intensifikasi di kota Padang. Hasilnya formula POTP+3,0kgMn/ha+0kgZn/ha dan POTP+3,0kgMn/ha+3,0kgZn/ha dan POTP+4,5kgMn+6kgZn dapat diaplikasikan ke sawah, untuk diuji multi lokasi di kabupaten Solok dan Tanah Datar. Perlakuan yang dilakukan pada dua lokasi tersebut adalah POTP+3,0kgMn/ha+0kgZn/ha, POTP+3,0kgMn/ha+3,0kgZn/ha, POTP+4,5kgMn+6kgZn, POTP saja, dan 100% pupuk sinntetik. Rancangan yang digunakan berupa rancangan acak kelompok (RAK) dengan 3 kelompok. Hasil terbaik yang telah dilakukan pada sawah intensifikasi di Kabupaten Tanah Datar dan Solok adalah formula POTP+3kgMn/ha+3kgZn/ha serta POTP+3kgMn/ha+3kgZn/ha. Penambahan unsur mikro memberikan peningkatan hasil sebanyak 3,8 15%. Kata kunci: padi, unsur hara mikro, dan POTP

Co-Authors Agustian Agustian Auzia Asman Enita, Enita Gusnidar Gusnidar Hermansah Hermansah Hermansah Junaidi Junaidi Lusi Maira Nalwida Rozen Teguh Budi Prasetyo Yulnafatmawita Yulnafatmawita Yulnafatmawita Yulnafatmawita Yusmini Yusmini

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