Publication Date

1985

Location

Kyoto Japan

Description

A seven-year study was conducted to evaluate the effect of interseeding rye into Coastal bermudagrass during its dormant season on the total yield, and the fate of nitrogen (N) from litter application rates of 45 T.ha. -1yr-1 for four years follwed by a residual phase of three years (fertilization for maximum yield), and 177 T.ha-1yr-1 for two years followed by a residual phase of 5 years ( disposal rate). At the fertilization rate, yield and N recovery in forage were increased by interseeding rye. Concentrations of NO3-N in water percolating past 122 cm were dramatically reduced. Percolate NO3-N losses from the interseeded treatment were less than half those from the non-interseeded treatment. The decrease in soil water NO3-N loss approximated the increase in N uptake from the interseeded rye. At the disposal rate, yield and N recovery in the forage were increased by interseeding during the 2 years that broiler manure was applied. NO3-N losses in soil water percolate were similar on the interseeded and non-interseeded treatments. After litter applications were stopped, NO3-N losses to percolation in the interseeded plots were reduced. Interseeding rye increased yield and reduced NO3-N losses to percolating soil water, particularly at the fertilization rate, but did not significantly improve N recovery in the total system for either broiler litter rate. Surface run-off losses of NO3-N were very low because of small volumes of run-off and were not affected by interseeding rye.

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The Effect of Interseeding Rye (Secale cereale L.) in Coastal Bermudagrass (Cynodon dactylon L. Pers.) on Nitrogen Recovery from Broiler Litter Application

Kyoto Japan

A seven-year study was conducted to evaluate the effect of interseeding rye into Coastal bermudagrass during its dormant season on the total yield, and the fate of nitrogen (N) from litter application rates of 45 T.ha. -1yr-1 for four years follwed by a residual phase of three years (fertilization for maximum yield), and 177 T.ha-1yr-1 for two years followed by a residual phase of 5 years ( disposal rate). At the fertilization rate, yield and N recovery in forage were increased by interseeding rye. Concentrations of NO3-N in water percolating past 122 cm were dramatically reduced. Percolate NO3-N losses from the interseeded treatment were less than half those from the non-interseeded treatment. The decrease in soil water NO3-N loss approximated the increase in N uptake from the interseeded rye. At the disposal rate, yield and N recovery in the forage were increased by interseeding during the 2 years that broiler manure was applied. NO3-N losses in soil water percolate were similar on the interseeded and non-interseeded treatments. After litter applications were stopped, NO3-N losses to percolation in the interseeded plots were reduced. Interseeding rye increased yield and reduced NO3-N losses to percolating soil water, particularly at the fertilization rate, but did not significantly improve N recovery in the total system for either broiler litter rate. Surface run-off losses of NO3-N were very low because of small volumes of run-off and were not affected by interseeding rye.