JI-11 Arbuscular Mycorrhizas in Various Rice Growing Environments and their Implication for Low Soybean Yields on Vertisol Soil in Central Lombok, Indonesia

Wayan, Wangiyana and Peter S., Cornish and Megan H., Ryan JI-11 Arbuscular Mycorrhizas in Various Rice Growing Environments and their Implication for Low Soybean Yields on Vertisol Soil in Central Lombok, Indonesia. IOSR - Journal of Environmental Science, Toxicology and Food Technology. ISSN e-ISSN: 2319-2402; p-ISSN: 2319-2399

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Abstract

This paper reports AMF (arbuscular mycorrhizal fungi) dynamics in 16 sites of vertisol rice growing environments existing in Central Lombok, Indonesia, for the 1999 non-rice dry season cropping to the end of the subsequent (1999/2000) rainy season rice cropping. The results showed that among the types of rice growing environments surveyed, the rainfed environments either with no flooding (upland rice) or only a short period of flooding (Gora rice) had higher AMF colonization levels and transparent spore number, compared with the irrigated environments in which rice crops are grown under flooded conditions (the once-rice or twice-rice cropping systems), indicating adverse effects of flooding on AMF colonization of rice. The transparent (viable) spore number was lowest and the percentage of black (dead) spores was highest in the twice-rice at the end of the rainy season rice crop indicating bad effects of flooded rice in maintaining AMF propagules in the soil. This may have an implication for the low yield of soybean normally direct seeded following harvest of the rainy season rice crops or following the second cycle rice crops in the twice-rice cropping systems, so that better production technologies need to be developed for sustainable crop production in those environments.

Item Type: Article
Keywords (Kata Kunci): arbuscular mycorrhiza, colonization, dynamics, rice growing environment, vertisols
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian
Depositing User: Dr. Wayan Wangiyana
Date Deposited: 23 Nov 2022 23:09
Last Modified: 23 Nov 2022 23:09
URI: http://eprints.unram.ac.id/id/eprint/33353

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