Federation of crop science societies of the philippines

FEDERATION OF CROP SCIENCE SOCIETIES OF THE PHILIPPINES Institute of Plant Breeding, College of Agriculture and Food Science University of the Philippines Los Baños, College, Laguna 4031 Email: [e-mail]
Abstract Submission Form
Presentation (Double-click inside the box to open the field box settings and tick “checked” on the default value option)
 FCSSP Oral Session  CSSP Best Paper (Submit full paper on or before deadline)  FCSSP Poster Session
Society Membership/s  CSSP  PAPTCB  PFA  PSIA
Discipline (give two choices, number priority)
 Crop Physiology and Biochemistry	 Postharvest Handling, Processing and Utilization
 Technology Development and Commercialization	 Technology Extension/Dissemination and Education
 Plant Breeding and Genetics	 Health and Nutrition
 Crop Production and Management/Protection	 Socioeconomics
Instructions for submission of abstracts: Limit abstracts to 300 words (excluding authors' names and addresses, and keywords). Use 10 pt Arial font and provide at most 5-6 keywords. We prefer that abstracts be submitted in Microsoft Office Word format (compatibility mode) as an attachment by e-mail to [e-mail]
(Please follow sample format below) EFFECT OF NITROGEN, BIO-FERTILIZER, AND SILICON APPLICATION ON YIELD AND YIELD COMPONENTS OF RICE (Oryza sativa L.) Abolghasem Panahi^1,2, Hashem Aminpanah^2*, Peyman Sharifi^2 ^1Department of Agronomy and Plant Breeding, Guilan Science and Research Branch, Islamic Azad University, Rasht, Iran; ^2Department of Agronomy and Plant Breeding, Rasht Branch, Islamic Azad University, Rasht, Iran, P.O. Box: 41335-3516. Email address: [e-mail], [e-mail] A field experiment was conducted in Neka, Mazandaran, north of Iran, to determine the effect of nitrogen (N), N2-fixing bacteria (Azospirilum + Azotobacter), and silicon (Si) on rice grain yield and yield components. Treatments were: N rates (0, 75, 150 kg ha-1), bio-fertilizer application (inoculation with or without Azospirillum + Azotobacter), and Si rates (0, 150, 300 kg ha-1). Rice grain yield was significantly affected by N rate, bio-fertilizer application and Si rate. The interaction between N rate and bio-fertilizer rate was significant for yield. With bio-fertilizer application, grain yield was significantly increased as N rate increased from 0 to 75 kg N ha-1, but slightly reduced at 150 kg ha-1 N rate. Without bio-fertilizer application, the highest grain yield was obtained in plots applied with 150 kg N ha-1. Regardless of N rate and bio-fertilizer application, the highest grain yield (5287 kg ha-1) was observed in plots applied with 300 kg Si ha-1. Nitrogen application significantly increased plant height, tiller number per m2, grain number per panicle, 1000-grain weight, biological yield, harvest index, grain N concentration, and grain N uptake across bio-fertilizer applications and Si rates. Across N and Si rates, plant height, tiller number per m2, grain number per panicle, biological yield, harvest index, grain N concentration, and grain N uptake were significantly increased with bio-fertilizer application. Moreover, Si application increased significantly plant height, tiller number per m2, grain number per panicle, 1000-grain weight, biological yield, harvest index, grain N uptake across biofertilizer applications and N rates. This study proved that bio-fertilizer application could reduce chemical N application rate with increase in rice grain yield. Keywords: nitrogen, plant growth-promoting rhizobacteria, rice, silicon (Si)