Influence of Azolla (<i>Azolla microphylla</i>Kaulf.) compost on biogenic gas production, inorganic nitrogen and growth of upland kangkong (<i>Ipomoea aquatica</i>Forsk.) in a silt loam soil

Jumadi, Oslan; Hiola, St. Fatmah; Hala, Yusminah; Norton, Jeanette M.; Inubushi, Kazuyuki

doi:10.1080/00380768.2014.942879

Cited by 21 publications

(10 citation statements)

References 41 publications

(49 reference statements)

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“…Azolla (Azolla filiculoides) was collected and prepared as described by Jumadi et al [21]. It was thoroughly washed using distilled water, then dried in an oven at 55 • C until the moisture content was stable at around 50%.…”

Section: Azolla Compost Preparation and Analysismentioning

confidence: 99%

“…It can fix atmospheric nitrogen by establishing a symbiotic association with Cyanobacteria (i.e., Anabaena azollae) which are located in the dorsal lobes of its leaves [19]. Furthermore, azolla has unique uses as a green feedstock and as composted manure due to its nitrogen content that can enhance crop productivity [20][21][22]. Using azolla compost in agriculture is considered a friendly environmental practice as a result of its desirable influence on suppressing methane emissions and decreasing global warming [23].…”

Section: Introductionmentioning

confidence: 99%

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Azolla Compost as an Approach for Enhancing Growth, Productivity and Nutrient Uptake of Oryza sativa L.

et al. 2022

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The excessive application of synthetic fertilizers can result in severe environmental risks, while composting green and fresh feedstocks can provide slow-release nutrients. Therefore, the aim of the current investigation was to study the effects of eight individual and combination treatments of azolla compost and NPK synthetic fertilizers (control = no fertilizer and compost; 100% NPK = full recommended dose of synthetic fertilizers as follows: 165 kg N/ha−1, 37 kg P2O5/ha−1 and 50 kg K2O/ha−1; 70% NPK; 40% NPK; 100% azolla compost (5 t DM ha−1); 50% NPK + 50% azolla compost; 70% NPK + 30% azolla compost and 40% NPK + 60% azolla compost) on rice growth, productivity and nutrient uptake in semi-arid agro-ecosystems. The results indicated that the combination of 40% NPK + 60% azolla compost or 50% NPK + 50% azolla compost resulted in the most optimal growth and the highest yield components. In addition, the application of 40% NPK + 60% azolla compost exhibited similar rice grain yields (10.76 t ha−1) as well as N, P, and K content and uptake compared with the full recommended dose of NPK fertilizer (100% NPK). This study declared that the utilization of azolla compost as an individual or combination application can reduce usage of synthetic fertilizers by up to 60% without significant reduction in the growth and grain productivity of rice.

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Section: Azolla Compost Preparation and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Azolla Compost as an Approach for Enhancing Growth, Productivity and Nutrient Uptake of Oryza sativa L.

et al. 2022

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“…Additionally, azolla is recognized to modify the physical, chemical, and biological properties of soil and the soil-water interface between flooding water and soil surface in rice fields for mobilizing fixed phosphates, retarding NH 3 volatilization which accompanies the application of chemical N fertilizer, suppressing aquatic weeds in flooding rice field, and reducing evapotranspiration losses for rice production (Mandal et al 1999;Cissé and Vlek 2003;Cheng et al 2015a;Kimani et al 2016;Kollah et al 2016). Recently, azolla has been highlighted again for biofetilizer and biodiesel production (Bocchi and Malgioglio 2010;Jumadi et al 2014;Brouwer et al 2016;Kollah et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Azolla cover significantly decreased CH₄but not N₂O emissions from flooding rice paddy to atmosphere

Kimani

Cheng

Kanno

et al. 2017

Soil Science and Plant Nutrition

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Azolla (Azolla filiculoides) is a common aquatic fern that has been used successfully as a dual crop with lowland rice. It grows rapidly and has the ability to fix N 2 for rice paddy. However, its ecological significance especially on greenhouse gases emissions remains unclear. To investigate the effect of azolla cover on methane (CH 4 ) and nitrous oxide (N 2 O) emissions from rice paddy, a pot experiment with two treatments, control (rice plant only) and azolla cover (rice plus azolla covering on the flooding water), was carried out in Tsuruoka, Yamagata, Japan, in 2016. The results showed that the rice growth parameters, like shoot height, maximum and productive tiller numbers, and plant biomass were not significantly different between the two treatments. Dual cropping of azolla with rice significantly suppressed CH 4 emissions, likely due to an increase in dissolved oxygen concentration and redox potential at the soil-water interface between flooding water and soil surface. There were significant (P < 0.05) positive correlations between CH 4 flux and night respiration (CO 2 emissions) between the two treatments. The cumulated CH 4 emissions during the growth period until 106 days after transplanting (DAT) was significantly lower at 36.2 g C m −2 from azolla cover treatment than that from control treatment pot at 55.4 g C m −2 . A prolonged nonsignificant N 2 O emission under the azolla cover treatment after the initial highest peak at 15 DAT was recorded due to denitrification of the nitrate in initial soil. No further N 2 O emissions were recorded thereafter from both treatments. Azolla cover did not affect N 2 O emissions from both treatments. ARTICLE HISTORY

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“…Pupuk organik menjadi alternatif untuk mengatasi penggunaan pupuk anorganik serta unsur hara terutama nitrogen pada tanaman, pupuk organik lebih ramah lingkungan dibandingkan pupuk anorganik, pupuk organik dapat memperbaiki struktur tanah, meningkatkan kesuburan tanah serta berkelanjutan (Garcia-Ruíz et al, 2012). Salah satu tumbuhan yang kaya N yang dapat digunakan sebagai kompos adalah Azolla (Jumadi et al, 2014). Menurut Jumadi et al (2014), pemberian kompos A. microphylla dapat mengurangi kebutuhan pupuk N anorganik.…”

Section: Abstrakunclassified

“…Salah satu tumbuhan yang kaya N yang dapat digunakan sebagai kompos adalah Azolla (Jumadi et al, 2014). Menurut Jumadi et al (2014), pemberian kompos A. microphylla dapat mengurangi kebutuhan pupuk N anorganik. Namun demikian, nutrisi yang terkandung di dalam pupuk organik harus termineralisasi oleh mikroorganisme tanah untuk melepaskan nutrisinya ke dalam tanah.…”

Section: Abstrakunclassified

Kandungan Nitrat Daun, Pertumbuhan, Dan Hasil Biomassa Sawi Dan Pakcoy Pada Pemberian Pupuk Nitrogen Anorganik Dan Kompos Azolla Secara Berimbang

Pratiwi

Marwanto

Widodo

et al. 2021

JIPI

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[LEAF NITRATE CONTENT, GROWTH, AND BIOMASS YIELD OF GREEN MUSTARD AND CHINESE CABBAGE FOLLOWING BALANCED APPLICATION OF INORGANIC NITROGEN FERTILIZER AND AZOLLA COMPOST]. The aim of this study was to determine the application rate of Azolla compost, either alone or combined with inorganic N fertilizers, to produce high biomass of mustard greens and Chinese cabbage with low leaf nitrate content. The pot experiments were carried out at the Research Plot of the Faculty of Agriculture located in Bengkulu University Campus from December 2019 to January 2020 with five treatments arranged in a completely randomized design with five replications. The treatments were 100% IF or IF100 (42.0 mg N/kg soil), 100% AC or AC100 (4000 mg/kg soil), IF75 (31.0 mg N/kg soil) + AC25 (1000 mg/kg soil), IF50 (21.0 mg/kg soil) + AC50 (2000 mg/kg soil), and IF25 (10.5 mg/kg soil) +AC75 (3000 mg/kg soil). The results showed that partial replacement of IF with AC (IF75 +AC25) produced plant growth and biomass yield similar to IF100 or higher than IF100 and AC100. The treatment produced plant biomass of 9.35 g plant-1 for green mustard and 167.10 g plant-1 for pakcoy, 32% and 35% higher than AC100 treatment respectively. The leaf nitrate content was 1080 - 2760 mg kg-1 for green mustard and 2310 - 2820 mg kg-1for Chinese cabbage, lower than the maximum limit of safe nitrate for consumption which was set at 3100 mg kg-1. Overall, compared with their sole applications, the partial substitution of inorganic N fertilizer with Azolla compost represents the most effective practice to promote the biomass yield of low-nitrate green mustard and Chinese cabbage.

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Influence of Azolla (Azolla microphyllaKaulf.) compost on biogenic gas production, inorganic nitrogen and growth of upland kangkong (Ipomoea aquaticaForsk.) in a silt loam soil

Cited by 21 publications

References 41 publications

Azolla Compost as an Approach for Enhancing Growth, Productivity and Nutrient Uptake of Oryza sativa L.

Azolla Compost as an Approach for Enhancing Growth, Productivity and Nutrient Uptake of Oryza sativa L.

Azolla cover significantly decreased CH₄but not N₂O emissions from flooding rice paddy to atmosphere

Kandungan Nitrat Daun, Pertumbuhan, Dan Hasil Biomassa Sawi Dan Pakcoy Pada Pemberian Pupuk Nitrogen Anorganik Dan Kompos Azolla Secara Berimbang

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Influence of Azolla (Azolla microphyllaKaulf.) compost on biogenic gas production, inorganic nitrogen and growth of upland kangkong (Ipomoea aquaticaForsk.) in a silt loam soil

Cited by 21 publications

References 41 publications

Azolla Compost as an Approach for Enhancing Growth, Productivity and Nutrient Uptake of Oryza sativa L.

Azolla Compost as an Approach for Enhancing Growth, Productivity and Nutrient Uptake of Oryza sativa L.

Azolla cover significantly decreased CH4but not N2O emissions from flooding rice paddy to atmosphere

Kandungan Nitrat Daun, Pertumbuhan, Dan Hasil Biomassa Sawi Dan Pakcoy Pada Pemberian Pupuk Nitrogen Anorganik Dan Kompos Azolla Secara Berimbang

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Azolla cover significantly decreased CH₄but not N₂O emissions from flooding rice paddy to atmosphere