Effect of UMAR-SRImat on weed management number of tillers and plant height of MR219 rice in System of Rice Intensification (SRI)

Aimrun Wayayok, . and Umar Mohammed, . and Mohd Amin Mohd Soom, . (2015) Effect of UMAR-SRImat on weed management number of tillers and plant height of MR219 rice in System of Rice Intensification (SRI). In: SEA Regional Conference on SRI 2015: Innovating Shared Value, 25-28 May 2015, Alor Setar Kedah.

System of Rice Intensification (SRI) is an innovation in rice farming cultural practice for increasing the productivity of water capital labour and land. SRI is all about altering the management of soil water rice plants and nutrients. However weeds growth is one of the major problems of SRI due to alternate wetting and drying (AWD) and wide planting spacing (25 × 25 cm or more). Thus if weed management is not being attempted it will lead to harmful competition between the weeds and the rice plants for water nutrients solar radiation carbondioxide and space. Currently manual weeder is being used to remove the weeds up to 40 days after transplanting (DAT) which is labour intensive while motorized weeder reduces the intensive labour but cannot be able to remove the weeds up to 40 DAT as practiced by farmers. This research was designed to determine the effectiveness of SRImat known as ;UMAR-SRImat; on weed control and to determine the influence of UMARSRImat on number of tillers and plant height. The experiment was laid out using randomized complete block design (RCBD) with four treatments [without soil cover (T1) SRImat (T2) UMAR-SRImat without LGE (T3) and UMAR-SRImat with LGE (T4)] and three replications. Weed density (WD) weed dry weight (DW) weed dry weight ratio (DWR) summed dominance ratio plant height and number of tillers were examined and recorded from the treatment plots for analysis. The dominant weed class associated with SRI were sedges due to higher summed dominance ratio (SDR) followed by grasses and broadleaves respectively. The effectiveness of UMAR-SRImat mulched was 100% (WCE) at 20 DAT and 99.64% at 40 DAT. The research exposed the opportunity of UMAR-SRImat mulch in controlling weeds up to 40 DAT with higher plant height and larger number of tillers at 30 and 50 DAT.

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Abstract

System of Rice Intensification (SRI) is an innovation in rice farming cultural practice for increasing the productivity of water capital labour and land. SRI is all about altering the management of soil water rice plants and nutrients. However weeds growth is one of the major problems of SRI due to alternate wetting and drying (AWD) and wide planting spacing (25 × 25 cm or more). Thus if weed management is not being attempted it will lead to harmful competition between the weeds and the rice plants for water nutrients solar radiation carbondioxide and space. Currently manual weeder is being used to remove the weeds up to 40 days after transplanting (DAT) which is labour intensive while motorized weeder reduces the intensive labour but cannot be able to remove the weeds up to 40 DAT as practiced by farmers. This research was designed to determine the effectiveness of SRImat known as ;UMAR-SRImat; on weed control and to determine the influence of UMARSRImat on number of tillers and plant height. The experiment was laid out using randomized complete block design (RCBD) with four treatments [without soil cover (T1) SRImat (T2) UMAR-SRImat without LGE (T3) and UMAR-SRImat with LGE (T4)] and three replications. Weed density (WD) weed dry weight (DW) weed dry weight ratio (DWR) summed dominance ratio plant height and number of tillers were examined and recorded from the treatment plots for analysis. The dominant weed class associated with SRI were sedges due to higher summed dominance ratio (SDR) followed by grasses and broadleaves respectively. The effectiveness of UMAR-SRImat mulched was 100% (WCE) at 20 DAT and 99.64% at 40 DAT. The research exposed the opportunity of UMAR-SRImat mulch in controlling weeds up to 40 DAT with higher plant height and larger number of tillers at 30 and 50 DAT.

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Item Type:	Conference or Workshop Item (Paper)
AGROVOC Term:	Rice
AGROVOC Term:	Paddy
AGROVOC Term:	Plant cultivation
AGROVOC Term:	Farm management
AGROVOC Term:	Intensification
AGROVOC Term:	Farming systems
AGROVOC Term:	Weed control
AGROVOC Term:	Weed control methods
AGROVOC Term:	Growth
AGROVOC Term:	Height
Geographical Term:	MALAYSIA
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:52
URI:	http://webagris.upm.edu.my/id/eprint/7723

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