Claim Missing Document
Check
Articles

Found 17 Documents
Search

KARAKTERISTIK GAMBUT RAWA PENING DAN POTENSINYA SEBAGAI BAHAN PEMBAWA MIKROBA Prihastuti, Prihastuti
BERITA BIOLOGI Vol 12, No 3 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i3.640

Abstract

This is a descriptive analytical research to describe characteristic of peat soils of Rawa Pening (a natural lake in Central Java, Indonesia). The purpose of this study was to determine the potency of peat soils as a microbial carrier. The parameters observed were chemical properties (pH, levels of C, N, P, K and CEC) and biological properties (total of soil microbial population), as well as its amendments by sun drying,ovens drying and sterilization process by autoclaving (121oC, and 1.5 atm for 15 minutes). The results showed that the Rawa Pening peat soil content consisted of high organic C, medium-high N, low-medium P, high K and high CEC. Total of soil microbial population was quite high, but it was reduced by sun drying and autoclave sterilization. The population of soil microbial was pressured by oven drying, but the process makes it a low pH caused by cell lysis. The Rawa Pening peat soils had physical properties that were not easily changed, is also not prone to changes in pH during the process by sun drying and sterilization by autoclave. It was concluded that the Rawa Pening peat soils have a potential to be a microbial carrier, since it contained high organic matter, and relatively easy to process.
KAJIAN PENGGUNAAN PUPUK HAYATI KEMASAN UNTUK TANAMAN KACANG TANAH DI LAHAN KERING MASAM, LAMPUNG Prihastuti, Prihastuti; Purwantoro, Purwantoro
Sains & Matematika Vol 3, No 1 (2014): Oktober, Sains & Matematika
Publisher : Sains & Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penggunaan pupuk hayati merupakan suatu pilihan untuk dilakukan dalam upaya meningkatkan penyediaan unsur hara tanaman, terutama yang ditanam pada lahan-lahan marjinal. Tujuan penelitian ini untuk mendeskripsikan pengaruh penggunaan pupuk hayati kemasan untuk tanaman kacang tanah. Penelitian menggunakan rancangan acak kelompok dengan enam jenis pupuk hayati yang diberikan secara tunggal ataupun kombinasi, masing-masing dengan tiga ulangan. Parameter yang diamati adalah tinggi tanaman, hasil polong, dan jumlah polong. Analisis kimia tanah sebelum tanam meliputi pH, C-organik, N, P, K, Ca, Mg, Al-dd, H-dd. Parameter biologis yang diamati adalah jumlah bintil akar dan tingkat infeksi mikoriza pada akar, dengan jumlah sampel tiga tanaman untuk masing-masing ulangan. Analisis data menggunakan analisis varians dilanjutkan dengan uji beda nyata terkecil (BNT). Hasil penelitian menunjukkan bahwa mikrob yang diintroduksikan melalui pupuk hayati kurang dapat berkembang dengan baik, yang diikuti dengan pertumbuhan tanaman yang kurang baik pula. Ketersediaan air merupakan faktor pembatas bagi perkembangan mikrob dan tanaman sehingga pertanian di lahan kering perlu disesuaikan dengan musim. Rendahnya pH tanah menghambat pertumbuhan bakteri pembentuk bintil akar. Penggunaan pupuk hayati yang tidak sesuai dengan kondisi lapang, sekalipun tanaman kacang tanah mampu membentuk polong, namun tidak mampu membentuk biji. Pupuk hayati yang direkomendasikan untuk digunakan di lahan kering masam adalah yang mengandung bakteri pelarut fosfat dan mikoriza vesikular arbuskular. The use of bio-fertilizers is an option to conduct in the effort improving the supply of plant nutrients, especially those planted on marginal lands. The aim this study was to determine the effect of the use of commercial biological fertilizers for peanut at acid dry land. This research used a randomized complete block design with six types of commercial biological fertilizers given in single use or in combination, each was applied in three replications. Parameters measured were plant height, pod yield, and the number of pods. Chemical analysis of the soil before planting include pH, C-organic, N, P, K, Ca, Mg, Al-dd, H-dd. Biological parameters measured were the number of nodule and level of the mycorrhizal root infection, the number of samples were three plants for each replication. Data were analyzed using analysis of variance (ANOVA) and followed by least signifi cant difference test (LSD). Results showed that the microbes that were introduced through bio-fertilizers were less well developed, followed by the growth of plants that were less good anyway. Water availability was a limiting factor for the development of microbes and plants, hence agriculture in dry land needs to be adjusted with the seasons. The low acidity of the soil inhibited the growth of nodule-forming bacteria. The use of biological fertilizer was not correspond to field conditions, even though peanut plants are capable of forming pods, however they are not capable to form a seed. Biological fertilizer that are recommended for usage on acid dry land is contained phosphate solubilizing bacteria and vesicular arbuscular mycorrhizae.
PENGUJIAN TERHADAP MUTU PUPUK HAYATI ILLETRISOY UNTUK TANAMAN KEDELAI Prihastuti, Prihastuti
Sains & Matematika Vol 4, No 1 (2015): Oktober, Sains & Matematika
Publisher : Sains & Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Penelitian ini bertujuan untuk mengetahui mutu dari pupuk hayati Illetrisoy. Penelitian diawali dengan identifi kasi jenis mikrob penyusun pupuk hayati, kualitas bahan pembawa dan produk pupuk hayati. Hasil penelitian menunjukkan bahwa Illetrisoy A dan Illetrisoy B mengandung 4 jenis bakteri yang berasal dari genus Phaenibacillus dan Bacillus. Bahan pembawa Illetrisoy berupa campuran gambut dan serbuk arang memberikan mutu yang baik pada Illetrisoy A (pH 6,75, C 22,13%, N 1,32%, P2O5 389 ppm, K 2,68 me/100 g dan total populasi 36,5 × 108 cfu/g bahan) dan Illetrisoy B (pH 6,92, C 21,74%, N 1,25%, P2O5 412 ppm, K 2,47 me/100 g dan total populasi 34,9 × 108 cfu/g bahan). Aplikasi pupuk hayati Illetrisoy terhadap tanaman kedelai dilakukan di rumah kaca Balitkabi pada MH II 2012. Perlakuan pemberian pupuk hayati Illetrisoy A dan Illetrisoy B dengan atau tanpa pemberian pupuk kandang tidak menunjukkan perbedaan terhadap karakter morfologis maupun hasil biji, yang belum dapat mengungguli perlakuan NPK. Penggunaan Illetrisoy memberikan harapan untuk mengurangi masukan pupuk kimia dan memperbaiki sifat-sifat tanah secara berkesinambungan. Disarankan penelitian dilakukan dalam periode waktu yang lebih panjang dan terintegrasi dengan pola tanam dan sistem budi daya yang ada. This study aimed to determine the quality of bio fertilizer. The research was consisted of identifi cation of microbial component, the carrier matter quality and the biofertilizer product. The result showed that Illetrisoy A and Illetrisoy B contain 4 species bacteria from the genus Phaenibacillus and Bacillus. The carrier of Illetrisoy was a mixture of Rawa Pening peat and charcoal powders provides a good quality in Illetrisoy A (pH 6.75, C 22.13%, N 1.32%, P2O5 389 ppm, K me/100 2.68 g and microbial population 36.5 × 108 cfu / g of matter) and Illetrisoy B (pH 6.92, C 21.74%, N 1.25%, P2O5 412 ppm, K me/100 2.47 g and microbial population 34.9 × 108 cfu / g of matter). The Illetrisoy effectiveness to soybean was conducted in the Balitkabi greenhouses at rainy season MH II 2012. The application of Illetrisoy A and Illetrisoy B with or without manure showed no differences in morphological characters and seed yield, which has been unable to outperform the NPK treatment. The Illetrisoy application provides a hope to reduce the inputs of chemical fertilizers and to improve soil properties in a sustainable manner. The research is recommended in a long period of time and is integrated with the cropping patterns and farming systems that exist.
KEMUNDURAN KUALITAS PUPUK HAYATI RHIZOBIUM Prihastuti, Prihastuti; Harsono, A.
Sains & Matematika Vol 1, No 1 (2012): Oktober, Sains & Matematika
Publisher : Sains & Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This is a descriptive analytical research to describe the quality deterioration of Rhizobium bio-fertilizer product during storage. The material was used a Rhizobium bio-fertilizer in plastic packing, which was stored in an incubator by temperature of 28oC for nearly ten months. The results showed that there had been a defect in the sealing plastic and formed small holes, caused the contamination, evidently by the growth of bacterial colonies were diverse. The analysis of C, N, P and K content indicated that career matter of bio- fertilizer composition belong to the dignity of the high fertility to support microbial growing. Total population of microbes in Rhizobium bio-fertilizer of all observed samples >106 cfu/g, but could not be considered a total population of Rhizobium. The damage of sealing packing decreased of the moisture career matter and become a limiting factor to support microbial viability. It was recommended to use a better quality plastic with appropriate sealing system. 
APLIKASI PUPUK HAYATI ILLETRISOY PADA TANAMAN KEDELAI DAN PENGARUHNYA TERHADAP POPULASI MIKROBA TANAH Prihastuti, Prihastuti
Sains & Matematika Vol 2, No 1 (2013): Oktober, Sains & Matematika
Publisher : Sains & Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Illetrisoy is a biological fertilizer for soybeans, improvised by Indonesian Legume and Tuber Crops Research Institute, consisting in two forms of formulations A and B. This study aimed to determine the benefits of Illetrisoy bio-fertilizer application on growth and seed yield, as well as its effect on soil microbial populations.? ? ? ? ? ? ? ? ? ? The research was conducted at the Indonesian Legume and Tuber Crops Research Institute, using of biological fertilizers Illetrisoy and soybean Grobogan variety. Design of the experiment used was a factorial randomized block with six replications. The first factor was the manure application consists of (1) without any manure, and (2) given manure. The second factor is giving inoculant Illetrisoy, consisting of (1) without inoculant, given inorganic fertilizer P, K, (2) without inoculant, given inorganic fertilizer N, P and K, (3) inoculation Illetrisoy A, and (4) inoculation Illetrisoy B. The results showed that the application of bio-fertilizers Illetrisoy on soybean has not significant effect on the physical variability of plants 45 days after planting and seed yield, compared to the treatment of manure and NPK application. The highest seed yields achieved on the application of Illetrisoy B accompanied with the application of manure and NPK fertilizer reached 50% (19.20 g seed/plant), which is not significantly different from the standard cultivation with application of NPK fertilizers which reached 18.43 g seed / plant. The analysis of the soil before and after soybeans planted, showed an improvement of chemically and biologically soil properties in terms of nutrient content (especially N and K) and total soil microbial population up to a hundred times.
The Strategy of Developing Sweet Potato Cultivation in Tidal Land Prihastuti, Prihastuti
El-Hayah : Jurnal Biologi Vol 6, No 1 (2016): EL-HAYAH (VOL 6, NO 1,September 2016)
Publisher : Department of Biology Science and Technology Faculty UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v6i1.4067

Abstract

The development of sweet potato cultivation in tidal land has begun. These activities require an appropriate invention in agricultural technology. An integrated management in physical, chemical and biological aspect also needs to be done. The content of soil microbes in tidal land is low, but it’s fairly high diversity can be used to improve the soil fertility. This paper describes some success of microbiological studies on tidal land. Further attempt is by integrate the potential of soil microbes utilization which supported by LEISA (Low External Input Sustainable Agriculture) technology.The success of this activity supports the national food security program and realizing sustainable agricultural system in the utilization of tidal land.
PROSPEK KOMERSIALISASI PRODUK MIKROBA DI BIDANG PERTANIA PRIHASTUTI, PRIHASTUTI
El-Hayah : Jurnal Biologi Vol 5, No 4 (2016): EL-HAYAH (VOL 5, NO 4,Maret 2016)
Publisher : Department of Biology Science and Technology Faculty UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v5i4.3472

Abstract

A microbial product commercialized is the final of a series of integrated research. This project started from a laboratory research, semi-field (greenhouse) into the field, to scale factories. The research procedures must be achieved, to maintain the quality of the microbial products. This paper raised the status and prospects for a microbial product commercialized in agriculture that can be developed and marketed, including the microbe that are active in the supply of nutrients, producing a substance in promoting plant growth and pest control. Technology of microbial commercialized covers: discovery, microbial strain development, greenhouse and field testing, formulation and implementation of products, regulatory, consumer response and market share. An economical aspect of soil microbial technology is determined by reference to the identification and quantification of financial research, processing time require, price of product, market share and return on investment.
UPAYA PENGELOLAAN BIOLOGIS LAHAN KERING MASAM ULTISOL Improving of acid dry land Ultisols by biologically management Prihastuti, Prihastuti
El-Hayah : Jurnal Biologi Vol 2, No 2 (2012): EL-Hayah (Vol 2, No 2, Maret 2012)
Publisher : Department of Biology Science and Technology Faculty UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v2i2.2212

Abstract

Pengelolaan Ultisol mempunyai prospek yang besar dalam mendukung program perluasan areal tanam komoditas pangan. Permasalahan utama pada lahan ini adalah nilai pH yang rendah, kandungan unsur hara yang rendah dan bersifat toksis. Keadaan ini menjadikan kandungan total mikroba tanah juga rendah. Upaya  pengelolaan  Ultisol  secara  fisis  dan  khemis  sudah  banyak  dilakukan,  untuk meningkatkan nilai pH tanah dan ketersediaan hara. Untuk menyempurnakan tindakan pengelolaan Ultisol, maka pengelolaan biologis lahan ini cukup menarik untuk dilakukan. Sekalipun total populasi mikroba rendah, namun keaneka ragaman jenisnya cukup tinggi dan  mengandung  mikroba  bermanfaat.  Pengelolaan  biologis  Ultisol  dapat  ditempuh melalui   masukan  mikroba  atau   dengan   memperbaiki  lingkungan  tumbuh  mikroba indigenous yang telah ada, antara lain dengan meningkatkan kadar bahan organik tanah.
STRUKTUR KOMUNITAS MIKROBA TANAH DAN IMPLIKASINYA DALAM MEWUJUDKAN SISTEM PERTANIAN BERKELANJUTAN Prihastuti, Prihastuti
El-Hayah : Jurnal Biologi Vol 1, No 4 (2011): EL-HAYAH (VOL 1, NO 4, Maret 2011)
Publisher : Department of Biology Science and Technology Faculty UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v1i4.1785

Abstract

Soils are made up of organic and an organic material. The organic soil component contains all the living creatures in the soil and the dead ones in various stages of decomposition.  Biological activity in soil helps to recycle nutrients, decompose organic matter making nutrient available for plant uptake, stabilize humus, and form soil particles.The extent of the diversity of microbial in soil is seen to be critical to the maintenance of soil health and quality, as a wide range of microbial is involved in important soil functions.  That ecologically managed soils have a greater quantity and diversity of soil microbial. The two main drivers of soil microbial community structure, i.e., plant type and soil type, are thought to exert their function in a complex manner. The fact that in some situations the soil and in others the plant type is the key factor determining soil microbial diversity is related to their complexity of the microbial interactions in soil, including interactions between microbial and soil and microbial and plants. The basic premise of organic soil stewardship is that all plant nutrients are present in the soil by maintaining a biologically active soil environment. The diversity of microbial communities has on ecological function and resilience to disturbances in soil ecosystems. Relationships are often observed between the extent of microbial diversity in soil, soil and plant quality and ecosystem sustainability. Agricultural management can be directed toward maximizing the quality of the soil microbial community in terms of disease suppression, if it is possible to shift soil microbial communities.Keywords: structure, microbial, implication, sustainable agriculture
Kemunduran Kualitas Pupuk Hayati Rhizobium Prihastuti, Prihastuti; Harsono, A.
Sains & Matematika Vol 1, No 1 (2012): Oktober, Sains & Matematika
Publisher : Sains & Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This is a descriptive analytical research to describe the quality deterioration of Rhizobium bio-fertilizer product during storage. The material was used a Rhizobium bio-fertilizer in plastic packing, which was stored in an incubator by temperature of 28oC for nearly ten months. The results showed that there had been a defect in the sealing plastic and formed small holes, caused the contamination, evidently by the growth of bacterial colonies were diverse. The analysis of C, N, P and K content indicated that career matter of bio- fertilizer composition belong to the dignity of the high fertility to support microbial growing. Total population of microbes in Rhizobium bio-fertilizer of all observed samples >106 cfu/g, but could not be considered a total population of Rhizobium. The damage of sealing packing decreased of the moisture career matter and become a limiting factor to support microbial viability. It was recommended to use a better quality plastic with appropriate sealing system.Â