TITLE:
Agronomic and Physiological Responses of Rice (Oryza sativa L.) under Different Water Management Systems, Fertilizer Types and Seedling Age
AUTHORS:
Kyi Mon Mon Ko, Yasumaru Hirai, Oscar B. Zamora, Lucille Elna de Guzman
KEYWORDS:
Phyllochron, Root Pulling Resistance (RPR), Total Dry Matter (TDM), Leaf Area Index (LAI), Crop Growth Rate (CGR), Net Assimilation Rate (NAR), Grain Yield
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.8 No.13,
December
15,
2017
ABSTRACT: A field experiment was conducted to evaluate the
agronomic and physiological responses of rice under different water management
systems, types of fertilizer and seedling age. This experiment was done at the
farm of Agri Park, College of Agriculture, Central Experimental Station (CES),
Crop Science Cluster of the University of the Philippines Los Banos, College
Laguna during 2013. The strip-split plot design with three replications was
used with the two types of fertilizer (vermicompost and chemical fertilizer),
water management (with and without standing water) and two seedling ages (10
and 14-d old) were the treatments in the experiment. Chemical fertilizer
produced the highest grain yield, total dry matter (TDM), leaf area index
(LAI), net assimilation rate (NAR) and crop growth rate (CGR). Most of these
characters significantly increased in 10-d old seedlings with chemical
fertilizer without standing water. The shorter phyllochron and higher root
pulling resistance (RPR) were observed in 10-d old seedlings without standing
water. For the variety NSIC Rc 216, the use of 10-d old seedlings grown without
standing water with chemical fertilizer is the optimum conditions for the
better growth and high productivity.