Development of sustainable technologies and approaches for adaptive rice-based agricultural systems (DSTAR): influence of organic/bio-organic fertilizers on populations of arthropods (pests/natural enemies) and major diseases in irrigated/rainfed rice

Date

2014

Abstract

Field experiments were conducted at CES [Central Experimentation Station]-UPLB [University of the Philippines Los Baños] and farmer's rainfed rice field in Barangay [village] San Jose, San Antonio, Quezon [Philippines] to compare the effect of bio-organic fertilizer and biocon agents on rice sheath blight severity, arthropods count (pests/natural enemies), agronomic character and grain yield. During the dry season 2014, generally, more natural enemies were counted on Biocon and Bio N treated plants. Under CES-UPLB condition, the dry and wet season trial showed that grain yield of Biocon and Bio N treatments were comparable with inorganic fertilizer treatment. Sheath blight severity Biocon and Bio N treatments were comparable with inorganic fertilize r but significantly low compared with the untreated control. Generally, the profitability with bio-organic fertilizer and biocon agent usage can still be realized. Only 50% of the required inorganic fertilizer was applied with Bio N and Biocon treatments with grain yield comparable with inorganic fertilizer alone. However, the possible net return and return on investment does not include the external, off-farm costs of environmental damage caused by chemical fertilizer.

Language

English

Document Type

Article

Pages /Collation

16 leaves

En – AGROVOC descriptors

ORYZA SATIVA; RICE; ORGANIC FERTILIZERS; ARTHROPODA; NATURAL ENEMIES; PESTS OF PLANTS; DRY SEASON; WET SEASON; AGRONOMIC CHARACTERS

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