Abstract
Abstract The use of inorganic fertilizers in rice production system in Indonesia, increases to an excessive level of application, which was 300 kg urea, 100 kg TSP, and 100 kg KCl per hectare, respectively. This application increases cost of rice production, reduces soil fertility, and farmers income, and harm environment. This article reports the effect of Lombok brown algae extracts on growth and yield of rice plants grown in soil media containing several doses of inorganic fertilizers. Lombok brown algaes, such as Sargassum crassifolium, Sargassum cristaefolium, Sargassum aquifolium, and Turbinaria murayana , were collected in Lombok Indonesia coastal beach. Each liquid extract 10% of brown algae, was sprayed to rice plants grown in soil media containing 0, 50%, or 100% dose of inorganic fertilizers recomended by Indonesian ministry of agriculture. The result showed that effect Lombok brown algae liquid extracts on chlorophyll content in leaf, N, P, K content in tissue, growth, and yield of rice plants, depends on dose of inorganic fertilizer applied in soil media. Similar phenomena were also found in growth and yield parameters. An interesting result found in this experiment that there were no significant effect of brown algae liquid extract on chlorophyll content in leaf, N, P, K content in tissue, growth and yield of rice plants grown in media containing 50% and 100% inorganic fertilizers. This indicates that the application of inorganic fertilizers could be reduced to 50% when the rice plants were also sprayed with brown algae liquid extract to gain the same yield of these supplied with 100% inorganic fertilizers.
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Claims 4
Claim · model-written summary
The effect of Lombok brown algae liquid extracts on rice chlorophyll, N, P, K, growth and yield depends on the inorganic fertilizer dose.
- Taxon
- Oryza sativa
Oryza sativat0 - Treatment
- Lombok brown algae liquid extractse1
- Outcome
- chlorophyll content in leaf, N, P, K content in tissue, growth, and yielde1
- Qualifier
- depends on dose of inorganic fertilizere1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice plants (Oryza sativa)”
e1“The result showed that effect Lombok brown algae liquid extracts on chlorophyll content in leaf, N, P, K content in tissue, growth, and yield of rice plants, depends on dose of inorganic fertilizer applied in soil media”
Claim · model-written summary
Brown algae liquid extract had no significant effect on rice leaf chlorophyll and tissue N, P and K content in media with 50% or 100% inorganic fertilizer.
- Taxon
- rice plantsOryza sativae2
- Treatment
- brown algae liquid extracte2
- Outcome
- chlorophyll content in leaf, N, P, K content in tissuee2
- Direction
- no_changeinferrede2
- Setting
- media containing 50% and 100% inorganic fertilizerse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“there were no significant effect of brown algae liquid extract on chlorophyll content in leaf, N, P, K content in tissue, growth and yield of rice plants grown in media containing 50% and 100% inorganic fertilizers”
Claim · model-written summary
Brown algae liquid extract had no significant effect on rice growth and yield in media with 50% or 100% inorganic fertilizer.
- Taxon
- rice plantsOryza sativae2
- Treatment
- brown algae liquid extracte2
- Outcome
- growth and yielde2
- Direction
- no_changeinferrede2
- Setting
- media containing 50% and 100% inorganic fertilizerse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“there were no significant effect of brown algae liquid extract on chlorophyll content in leaf, N, P, K content in tissue, growth and yield of rice plants grown in media containing 50% and 100% inorganic fertilizers”
Claim · model-written summary
Rice sprayed with brown algae liquid extract may keep yield with inorganic fertilizer reduced to 50%.
- Taxon
- rice plantsOryza sativae3
- Treatment
- sprayed with brown algae liquid extracte3
- Outcome
- application of inorganic fertilizerse3
- Direction
- reducede3
- Value
- 50%e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“This indicates that the application of inorganic fertilizers could be reduced to 50% when the rice plants were also sprayed with brown algae liquid extract to gain the same yield of these supplied with 100% inorganic fertilizers”
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