The allelopathic potential of several rice varieties on barnyard grass (Echinochloa crus-galli L. Beauv.)

Ismail Sahid, . and Sarker Mohammad Rezaul Karim, . and Abdullah Mohamad Zain, . The allelopathic potential of several rice varieties on barnyard grass (Echinochloa crus-galli L. Beauv.). pp. 173-182. ISSN 1394-9829

A total of 148 rice varieties were tested for their allelopathic potential on Echinochloa crus-galli using the relay seeding technique. Seven days after the rice seed germinated non-dormant seeds of E. crus-galli were placed close to the rice seedlings. The effect factor (EF) of the rice varieties was calculated as (relative root length relative shoot length relative seedling dry weight)/3 and used as the indicator of the allelopathic potential of the rice varieties. Reduction of weed growth was calculated as (1 “ EF) x 100 whereby 1 is the control factor in which no reduction occurs. Significant differences among the rice varieties with regard to their effects on root length shoot length and dry weight were observed and these ultimately produced the significant differences in the effect factor. The results showed that there were 12 varieties with highly inhibitory effects on the weed growth. The percentages of growth reduction were Makmur (44) MR 14 (40) Acheh Puteh (37) Manik (37) MR 59 (37) Seberang (36) Sekencang (35) MR 15 (34) Anak China (33) Anak Ikan China (33) Anak Ikan China (33) and Y1021 (33). The weakly allelopathic rice varieties identified were Lembut Ketam (1) MR 212 (3) Chempaka 173 (4) MR 109 (5) MR 219 (5) and MR 58 (7). The following three varieties namely Janda Berhias Muda 2 and Mayang Seroi 70 caused 8 growth reduction in the E. crus-galli seedlings.

Full text available from: Official URL: http://ejtafs.mardi.gov.my/jtafs/35-1/Allelopathic...

Abstract

A total of 148 rice varieties were tested for their allelopathic potential on Echinochloa crus-galli using the relay seeding technique. Seven days after the rice seed germinated non-dormant seeds of E. crus-galli were placed close to the rice seedlings. The effect factor (EF) of the rice varieties was calculated as (relative root length relative shoot length relative seedling dry weight)/3 and used as the indicator of the allelopathic potential of the rice varieties. Reduction of weed growth was calculated as (1 “ EF) x 100 whereby 1 is the control factor in which no reduction occurs. Significant differences among the rice varieties with regard to their effects on root length shoot length and dry weight were observed and these ultimately produced the significant differences in the effect factor. The results showed that there were 12 varieties with highly inhibitory effects on the weed growth. The percentages of growth reduction were Makmur (44) MR 14 (40) Acheh Puteh (37) Manik (37) MR 59 (37) Seberang (36) Sekencang (35) MR 15 (34) Anak China (33) Anak Ikan China (33) Anak Ikan China (33) and Y1021 (33). The weakly allelopathic rice varieties identified were Lembut Ketam (1) MR 212 (3) Chempaka 173 (4) MR 109 (5) MR 219 (5) and MR 58 (7). The following three varieties namely Janda Berhias Muda 2 and Mayang Seroi 70 caused 8 growth reduction in the E. crus-galli seedlings.

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Item Type:	Article
AGROVOC Term:	Echinochloa crus galli
AGROVOC Term:	Grasses
AGROVOC Term:	Allelopathy
AGROVOC Term:	Rice
AGROVOC Term:	Varieties
AGROVOC Term:	Seeding (seed)
AGROVOC Term:	Seed germination
AGROVOC Term:	Seedlings
AGROVOC Term:	Root length
AGROVOC Term:	Growth inhibitors
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24581

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