Azolla

There were high levels of 15N-labelled azolla in the internal organs of nile tilapia and low ❋ Unknown (1995)

After uptake of 15N-labelled azolla for 96 h, 15N recovery in the intestine, stomach, and liver decreased from 10.3% to 1.0%, 1.6% to 0.2%, and 2.4% to 0.7%, respectively. ❋ Unknown (1995)

However, the level of 15N-labelled azolla in the internal organs gradually decreased, whereas the level of 15N-labelled azolla in the muscles greatly increased (Table 3). ❋ Unknown (1995)

The utilization of 15N from azolla in the rice-azolla-fish system is increased to 67.8% (Table 4); whereas, the rice-azolla treatment using 15N-labelled azolla as a top dressing at the maximum tillering stage had a utilization rate of 46.1%. ❋ Unknown (1995)

15N-labelled azolla levels in the external organs at the start of the experiments. ❋ Unknown (1995)

Both grass-feeding and omnivorous fish eat azolla. ❋ Unknown (1995)

This reduction was probably due to the dilution of 15N from the azolla by the other nitrogenous matter excreted from the alimentary canal of the fish (which includes digestive juice, sloughed cells from the stomach, and azolla). ❋ Unknown (1995)

After application of 50% 35S-methamidophos emulsion to the rice plants in the rice-azolla-fish ecosystem at the rate of 0.75 kg/ha, samples of water, soil, straw, azolla, and fish were taken for analysis of methamidophos residue at different times from immediately after application to 14 days. ❋ Unknown (1995)

Observations from 1983 to 1986 indicate that the rice-azolla-fish system effectively suppresses weeds and rice pests (Table 7). ❋ Unknown (1995)

Residue in the simulated rice-azolla-fish ecosystem. ❋ Unknown (1995)

The rapid increase of available potassium is also apparent, which demonstrates the capability of azolla to enrich potassium levels. ❋ Unknown (1995)

The rice-azolla-fish system increased farm income by about CNY 1954/ha. ❋ Unknown (1995)

Under these conditions, pure cultures of either species do not use azolla efficiently. ❋ Unknown (1995)

Experiments over 3 years demonstrated that the rice-azolla-fish system will produce fish yields of 1000 kg/ha. ❋ Unknown (1995)

In the natural rice-azolla-fish ecosystem, there was only ❋ Unknown (1995)

A glass aquarium (95 cm x 68 cm x 45 cm) held the soil (200 kg), rice plants (30 hills), fish (30), and azolla. ❋ Unknown (1995)

However, the environment created by the rice-azolla-fish system is also conducive to the survival of the natural enemies of rice pests (e.g., spiders and black ants). ❋ Unknown (1995)

The rice-azolla-fish system provides an excellent growing environment for rice, fish, and azolla. ❋ Unknown (1995)

Two methods are recommended to increase the azolla biomass: increase the space between rice rows to give the azolla sufficient room to grow, and prolong the propagation period to ensure the fish have sufficient food to eat. ❋ Unknown (1995)

[Look at] her! She's [just] like Azolla!. ❋ Scolopendra_ (2021)