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All Journal Prosiding Jurnal Planta Tropika Journal of Tropical Crop Science
Teguh Widiatmoko
Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Education

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KORELASI ANTAR KOMPONEN HASIL DAN HASIL PADA PADI GENOTIP F5 KETURUNAN PERSILANGAN G39 X CIHERANG Riyanto, Agus; Widiatmoko, Teguh; Hartanto, Bambang
Prosiding Vol 3, No 1 (2012)
Publisher : Prosiding

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Abstract

Pendugaan korelasi antar sifat menentukan keberhasilan seleksi. Tujuan dari penelitian ini adalah 1) mengetahui korelasi antara karakter komponen hasil dan hasil dan 2) mengetahui korelasi antar karakter komponen hasil. Percobaan dilakukan di Kabupaten Banyumas pada bulan April sampai dengan Agustus 2012. Bahan yang digunakan adalah padi populasi F5 keturunan persilangan G39 dan Ciherang. Rancangan yang digunakan adalah Augmented Design. Hasil penelitian menunjukkan: 1. Karakter komponen hasil yang berkorelasi positif dan nyata dengan hasil adalah tinggi tanaman, jumlah anakan total per rumpun, jumlah anakan produktif per rumpun, umur berbunga, umur panen, jumlah gabah total per malai dan bobot 1000 biji. Karakter persentase gabah isi per malai dan panjang malai tidak nyata berkorelasi dengan karakter hasil. 2. Terdapat korelasi di antara karakter komponen hasil.
Effect of Various Levels of NPK Fertilizer on the Yield Attributes of Soybean (Glycine max L.) Varieties Perkasa, Achmad Yozar; Utomo, Utomo; Widiatmoko, Teguh
Journal of Tropical Crop Science Vol 3 No 1 (2016): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (73.68 KB) | DOI: 10.29244/jtcs.3.1.7-12

Abstract

Indonesian soybean production can only meet about 30% of national demand. Efforts to increase soybean production include the use of improved seed quality and fertilizer application. The aims of this research were to 1) examine the responses of six genotype soybeans to the application of different doses of NPK fertilizer; 2) determine the seed protein content of the six soybean genotypes following NPK application; 3) determine the interaction between soybean genotypes with NPK doses in affecting growth and yield. This research was conducted under a plastic house at the Faculty of Agriculture, University of Jenderal Soedirman, Central Java, Indonesia. The experiment was arranged in a randomized block design with three replications using six soybean varieties and four levels NPK fertilizer. Soybean varieties tested were “L/S: B6-G1” (V1), “L/S:B6-G3” (V2), “L/S:B6-G4” (V3), “Grobogan” (V4), “Burangrang” (V5), and “Argomulyo” (V6). Four levels NPK fertilizer tested were: without fertilizer (N0), 0.6 g per plant (N1) 1.2 g per plant (N2), and 18.g per plant (N3), or 0, 100, 200 and 300 kg.ha-1. “L/S: B6-G1” had the greatest number of seeds per plant (184) following treatment with 300 kg.ha-1 of NPK. The seed protein content increased with the increase doses of NPK. “Argomulyo” treated with NPK at 300 kg.ha-1 had the highest seed protein content (34.5%). Soybean responses to NPK treatment differed with varieties, particularly in the number of fl owers per plant, number of seeds per plant, grain weight per plant and seed protein levels.
Indol Acetic Acid Production of Indigenous Plant Growth Promotion Rhizobacteria from Paddy Soil Purwanto, Purwanto; Agustono, Tridjoko; Widjonarko, Bambang Rudianto; Widiatmoko, Teguh
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 7, No 1 (2019)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.2019.087.1-7

Abstract

The aim of this research was to examine the diversity of indigenous plant growth promoting rhizobacteria from paddy soil and to obtain a superior isolate that can support the growth and vigor of rice plants. This research was conducted in the Laboratory of Agronomy and Horticulture, Faculty of Agriculture, Jenderal Soedirman University from July to September 2017. The bacteria were isolated from paddy soil rhizosphere originated from rice production centers of Banyumas Regency i.e. Kebasen, Rawalo, Patikraja, Jatilawang, and Karangwangkal. Results showed that indigenous PGPR from paddy soil were able to produce Indol Acetic Acid (IAA) in the range 0.05-5.40 ppm, but did not have the ability to solubilize phosphate. Plant Growth Promoting Rhizobacteria (PGPR) inoculation in rice seedlings was able to increase seed vigor, plant height, root length, and seed germination. Based on morphological and biochemical characters, PGPR isolates were identified as Bacillus sp., Pseudomonas sp., Streptococcus sp., and Staphylococcus sp.
Co-Authors Achmad Yozar Perkasa, Achmad Yozar Agus Riyanto Agustono, Tridjoko Bambang Hartanto Purwanto Purwanto Utomo Utomo Widjonarko, Bambang Rudianto