EFFECT OF WATERLOGGING ON WEED SEED GERMINATION AND GROWTH IN LOWLAND RICE

Paiman, Prodi Agroteknologi, Fakultas Pertanian, UPY (2022) EFFECT OF WATERLOGGING ON WEED SEED GERMINATION AND GROWTH IN LOWLAND RICE. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 20(6):5397-5408.

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Abstract

Weed control is needed to avoid competition in early rice growth. A weed control method is waterlogging. The study aimed to investigate the effect of waterlogging on weed seed germination and growth in lowland rice. This research was arranged in a completely randomized design (CRD) factorial and three replications. The first factor was waterlogging, which consisted of three levels: without waterlogging, 1-15 days after planting (DAP), and 1-30 DAP. The second factor was focused on two different soil types: latosol soil (LS) and regosol soil (RS). The results showed that waterlogging could inhibit seed germination of weed in RS but not in LS. In this study, waterlogging of 1-30 DAP inhibited weed dry weight higher than 1-15 DAP in both soil types. Waterlogging of 1-30 DAP decreased the weed dry weight by 87.2% in LS and 97.3% in RS than without waterlogging. Waterlogging could change the summed dominance ratio (SDR) of weed species. The research findings show that the waterlogging period of 1-30 DAP effectively inhibits the weed seed germination and growth in RS, but in LS could extend. We recommend that waterlogging period of 1-30 DAP can be applied for weed control in lowland rice.

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