Impact of Plant Growth Promoting Bacterial Root Endophytes on Growth and Nutrient Status of Brown Sarson (Brassica rapa L.)

2017 ◽  
Vol 5 (2) ◽  
pp. 638-651 ◽  
Author(s):  
Shahid Ahmad Padder ◽  
Keyword(s):  
Plant Growth ◽  
Brassica Rapa ◽  
Nutrient Status ◽  
Root Endophytes ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Brown Sarson

scholarly journals PENGARUH DOSIS PUPUK NPK MAJEMUK DAN PGPR (PLANT GROWTH PROMOTING RHIZOBACTERIA) TERHADAP BOBOT BASAH DAN KADAR KLOROFIL DAUN TANAMAN PAKCOY (Brassica rapa L.)

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Rosyida Rosyida ◽  
Ary Susatyo Nugroho
Keyword(s):  
Plant Growth ◽  
Brassica Rapa ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant Growth Promoting Rhizobacteria (PGPR) ialah kelompok mikroorganisme tanah yang menguntungkan bagi kesuburan tanah dan tanaman. Mikroorganisme yang hidup di daerah perakaran tersebut memiliki 3 peran utama bagi tanaman yaitu : 1) sebagai biofertilizer, 2) sebagai biostimulan, dan 3) sebagai bioprotektan. Penelitian ini bertujuan untuk memperlihatkan efek suplementasi PGPR dalam dosis pemberian pupuk majemuk NPK terhadap bobot basah dan kadar klorofil daun pada tanaman pakchoy (Brassica rapa L.). Perlakuan pada penelitian ini meliputi 5 taraf perlakuan, yaitu: variasi kombinasi dosis pupuk majemuk NPK dan PGPR: NPK 100% (A0P0), NPK 75% + PGPR 25% (A1P1), NPK 50% + PGPR 50% (A2P2), NPK 25% + PGPR 75% (A3P3), PGPR 100% (A4P4). Masing – masing perlakuan diulang 5 kali. Desain percobaan adalah Rancangan Acak Lengkap (RAL), hasil percobaan dianalisis dengan ANOVA (P < 0,05), dilanjutkan dengan uji Duncan. Berdasarkan hasil percobaan, disimpulkan bahwa bahwa ada pengaruh yang nyata pada suplementasi PGPR dalam dosis pupuk majemuk NPK pada parameter bobot basah dan kadar klorofil daun tanaman pakchoy. Bobot basah tertinggi ditunjukkan pada tanaman pakchoy yang diberi perlakuan NPK 25% + PGPR 75% (A3P3), sedangkan pada tanaman yang diberi perlakuan NPK 75% + PGPR 25% (A1P1) mampu mengakumulasi kadar klorofil tertinggi diantara daun tanaman lainnya. Kata Kunci: Plant Growth Promoting Rhizobacteria (PGPR), Pupuk, NPK, Pakchoy

scholarly journals PENGARUH PEMBERIAN PLANT GROWTH PROMOTING RHIZOBACTERIA (PGPR) AKAR BAMBU PADA PERTUMBUHAN DAN PRODUKSI TANAMAN PAKCOY (Brassica rapa L.)

2021 ◽  
Vol 17 (1) ◽  
pp. 19-24
Author(s):  
Rachmat Rachmat ◽  
Sendi Bororing ◽  
Ramli Ramli ◽  
Abd. Azis H.
Keyword(s):  
Plant Growth ◽  
Brassica Rapa ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian plant growth promoting rhizobacteria (PGPR) akar bambu pada pertumbuhan dan produksi tanaman pakcoy (Brassica rapa L.). Penelitian ini dilaksanakan dengan menggunakan metode yang digunakan dalam kajian ini yakni Rancangan Acak Kelompok (RAK) yang terdiri dari 4 perlakuan dan 3 ulangan, sehingga terdapat 12 plot. Dalam pelaksanaan kajian 1 plot terdapat  25 tanaman total tanaman untuk keseluruhan adalah 300 tanaman. Pengamatan dilakukan untuk memperoleh data yang akan dianalisis. Pengambilan data dilakukan 1 minggu setelah tanaman diberikan PGPR akar bambu dengan cara mengukur pertumbuhan tanaman dengan menggunakan alat ukur berupa mistar. Pengambilan data dilakukan pada saat tanaman berumur 7, 14, 21, dan 28 (HST), dilakukan sesuai dengan parameter yang diteliti, yaitu tinggi tanaman, jumlah daun, dan berat basah. rata-rata tinggi tanaman pakcoy mengalami peningkatan pada umur 7, 14, 21 dan 28 hari setelah tanam. rata-rata jumlah daun pakcoy yang diamati mengalami peningkatan pada umur 7, 14, 21 dan, 28 hari setelah tanam. rata-rata berat basah tanaman pakcoy umur 45 hari setelah tanam tidak mengalami perubahan.

Response of spring rape (Brassica napus var. oleifera L.) to inoculation with plant growth promoting rhizobacteria containing 1-aminocyclopropane-1-carboxylate deaminase depends on nutrient status of the plant

2002 ◽  
Vol 48 (3) ◽  
pp. 189-199 ◽  
Author(s):  
Andrei A Belimov ◽  
Vera I Safronova ◽  
Tetsuro Mimura
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Pseudomonas Putida ◽  
Ethylene Production ◽  
Root Elongation ◽  
Plant Growth Promoting Rhizobacteria ◽  
Nutrient Status ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Stimulation Of

Responses of rape (Brassica napus var. oleifera L.) to inoculation with plant growth promoting rhizobacteria, Pseudomonas putida Am2, Pseudomonas putida Bm3, Alcaligenes xylosoxidans Cm4, and Pseudomonas sp. Dp2, containing 1-aminocyclopropane-1-carboxylate (ACC) deaminase were studied using growth pouch and soil cultures. In growth pouch culture, the bacteria significantly increased root elongation of phosphorus-sufficient seedlings, whereas root elongation of phosphorus-deficient seedlings was not affected or was even inhibited by the bacteria. Bacterial stimulation of root elongation of phosphorus-sufficient seedlings was eliminated in the presence of a high ammonia concentration (1 mM) in the nutrient solution. Bacterial effects on root elongation of potassium-deficient and potassium-sufficient seedlings were similar. The bacteria also decreased inorganic phosphate content in shoots of potassium- and phosphorus-sufficient seedlings, reduced ethylene production by phosphorus-sufficient seedlings, and inhibited development of root hairs. The effects of treatment with Ag+, a chemical inhibitor of plant ethylene production, on root elongation, ethylene evolution, and root hair formation were similar to bacterial treatments. The number of bacteria on the roots of phosphorus-deficient seedlings was not limited by phosphorus deficiency. In pot experiments with soil culture, inoculation of seeds with bacteria and treatment with aminoethoxyvinylglycine, an inhibitor of ethylene biosynthesis in plants, increased root and (or) shoot biomass of rape plants. Stimulation of plant growth caused by the bacteria was often associated with a decrease in the content of nutrients, such as P, K, S, Mo, and Ba, in shoots, depending on the strain used. The results obtained show that the growth-promoting effects of ACC-utilizing rhizobacteria depend significantly on the nutrient status of the plant.Key words: 1-aminocyclopropane-1-carboxylate deaminase, Brassica napus, PGPR, phosphorus uptake, plant-bacteria interaction, ethylene, Pseudomonas.

ISOLASI BAKTERI PLANT GROWTH PROMOTING RHIZOBAKTERIA (PGPR) LOKAL DARI ENDOFIT AKAR TANAMAN KELAPA SAWITDAN UJI ANTAGONIS TERHADAP PENYAKIT JAMUR AKAR PUTIH

2014 ◽  
Vol 5 (2) ◽  
Author(s):  
Hilwa Walida
Keyword(s):  
Biological Control ◽  
Plant Growth ◽  
Oil Palm ◽  
Descriptive Analysis ◽  
Morphological Characteristics ◽  
Plant Growth Promoting Rhizobacteria ◽  
Root Endophytes ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Fungus Disease

White root fungus disease has become the most damaging root disease in rubber trees in both Africa and Asia that supplies 98% of rubber products to the world market. Chemical control by using pesticide was a common root control of white root fungus. PGPR (Plant Growth Promoting Rhizobacteria) could be one of the solutions in biological control of environmentally to against white root fungi. The aims of yhis study were to obtain isolates of local PGPR bacteria from the root endophytes of oil palm trees, to know the morphological characteristics of local PGPR isolates from root endophytes of oil palm plants, and to know the potential of biological control agents againts white root fungus disease. This research was conducted by using descriptive analysis method. The results showed that there were 9 bacterial isolates from the root endophytes of oil palm plants with different macroscopic morphological characteristic and there were 9 isolatesable to inhibite the growth of white root fungus with the biggest potential was A5 isolate. Keywords : PGPR, Root Endophytes of Palm Oil Plant, Rigidoporus microporus

Respon Pertumbuhan Vegetatif Sawi Hijau (Brassica rapa l. Var. Tosakan ) Akibat Pemberian PGPR (Plant Growth Promoting Rhizobacteria) yang Dikombinasikan dengan Pupuk Kompos dan NPK

2020 ◽  
Vol 10 (2) ◽  
pp. 79
Author(s):  
Kezia Sisilia Sagay ◽  
Parluhutan Siahaan ◽  
Susan Mambu
Keyword(s):  
Plant Growth ◽  
Brassica Rapa ◽  
Growth Response ◽  
Plant Growth Promoting Rhizobacteria ◽  
Crop Cultivation ◽  
Community Needs ◽  
Plant Growth Promoting ◽  
Npk Fertilizer ◽  
Growth Promoting ◽  
Better Than

ABSTRAKSawi hijau (Brassica rapa L. var. Tosakan ) adalah salah satu komoditi sayuran yang sudah banyak dibudidayakan. Kebutuhan masyarakat terhadap sawi hijau semakin meningkat sehingga dari permintaan konsumen sawi hijau layak dikembangkan. Faktor penting dalam budidaya tanaman yang menunjang keberhasilan produksi sawi hijau yaitu pemupukan. Penelitian ini bertujuan untuk menguji respon pertumbuhan tanaman sawi hijau (Brassica rapa L. var. Tosakan ) akibat pemberian PGPR (Plant Growth-romoting Rhizobacteria) yang dikombinasikan dengan pupuk kompos maupun NPK. Penelitian ini terdiri atas lima perlakuan yang diulangi sebanyak lima kali: P0 (tanah kebun sebagai kontrol), P1 (tanah kebun ditambah pemberian PGPR), P2 (tanah kebun, kompos ditambah pemberian PGPR), P3 (tanah kebun ditambah pupuk NPK dengan pemberian PGPR), P4 (tanah kebun ditambah NPK). Hasil penelitian menunjukan bahwa PGPR dapat meningkatkan pertumbuhan sawi hijau yang lebih baik dibandingkan dengan kontrol. Kombinasi PGPR yang memberikan hasil terbaik adalah perlakuan  PGPR yang dikombinasikan dengan pupuk NPK.Kata kunci: Sawi hijau; PGPR; Pupuk kompos; Pupuk NPK. ABSTRACTGreen mustard (Brassica rapa L. var. Tosakan) is a vegetable commodity that has been widely cultivated. Community needs for green mustard are increasing, so that the demand for green mustard consumers is worth developed. An important factor in crop cultivation that supports the success of mustard greens production is fertilization. Study aims to examine the growth response of green mustard plants (Brassica rapa L. var. Tosakan) due to the administration of PGPR (Plant Growth-romoting Rhizobacteria) combined with compost or NPK fertilizer. This study consisted of five treatments that were repeated five times: P0 (farmland as a control), P1 (garden land plus PGPR application), P2 (garden land, compost plus PGPR application), P3 (garden land plus NPK fertilizer with granting PGPR), P4 (garden land plus NPK). The results of the study showed that PGPR could generally increase the growth of green mustard better than controls. The combination of PGPR that provided the best results was the PGPR and NPK fertilizer combination.Keywords: Green mustard, PGPR, Compost fertilizer, NPK fertilizer.

scholarly journals Agricultural Utilization of Unused Resources: Liquid Food Waste Material as a New Source of Plant Growth-Promoting Microbes

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 954
Author(s):  
Waleed Asghar ◽  
Shiho Kondo ◽  
Riho Iguchi ◽  
Ahmad Mahmood ◽  
Ryota Kataoka
Keyword(s):  
Plant Growth ◽  
Brassica Rapa ◽  
Food Waste ◽  
Field Experiments ◽  
Chemical Fertilizer ◽  
Waste Material ◽  
Plant Growth Promoting Bacteria ◽  
Liquid Food ◽  
Plant Growth Promoting ◽  
Growth Promoting

Organic amendment is important for promoting soil quality through increasing soil fertility and soil microbes. This study evaluated the effectiveness of using liquid food waste material (LFM) as a microbial resource, by analyzing the microbial community composition in LFM, and by isolating plant growth-promoting bacteria (PGPB) from the material. High-throughput sequencing of LFM, collected every month from May to September 2018, resulted in the detection of >1000 bacterial operational taxonomic units (OTUs) in the LFM. The results showed that Firmicutes was abundant and most frequently detected, followed by Proteobacteria and Actinobacteria. Of the culturable strains isolated from LFM, almost all belonged to the genus Bacillus. Four strains of PGPB were selected from the isolated strains, with traits such as indole acetic acid production and 1-aminocyclopropane-1-carboxylic acid deaminase activity. Lettuce growth was improved via LFM amendment with PGPB, and Brassica rapa showed significant differences in root biomass when LFM amendment was compared with the use chemical fertilizer. Field experiments using LFM showed slight differences in growth for Brassica rapa, lettuce and eggplant, when compared with the use of chemical fertilizer. LFM is a useful microbial resource for the isolation of PGPB, and its use as fertilizer could result in reduced chemical fertilizer usage in sustainable agriculture.

Sign in / Sign up

Export Citation Format

Share Document