RDE Abstract of Completed Research
Soil Fertility Improvement / Green Manuring
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Evaluation of Leguminous Cultivars as Green Manures for Sugarcane (2005)
- E. Estanislao
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- Cane and sugar yields were increased by Centrosema pubescens and Colopogonium caerulum with or without N fertilization. In contrast, green manuring with Pucraria phaseloides and Centrosema macrocarpum produced comparable cane and sugar yield with control.
- Green Manuring of Sugarcane Fields with Mercena pruriens. Annual Report, SRA (LAREC) (2004)
- ESTANISLAO, E.B. and O.T. QUILLOY
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- Mercerna pruriens was planted at 2m x 2m distance of seeding and incorporated into the soil at full blooming stage. Millable stalks produced from the green manured plots were higher than those without green manure. Optimum cane tonnage and sugar yields were obtained where 90 kg/ha N was supplemented in the green manured sugarcane fields. M. pruriens incorporated into the soil during the plant crop had little residual effect on the succeeding ratoon crop although the optimum yields were also observed at the 90 kg/ha N fertilization level.
- Evaluation of different leguminous cultivars as green manure (1999)
- Oscar Quilloy and E. Estanislao
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- Different accessions of Colopogonium and Centrosema produced more biomass and high N content which could improve growth and yields of sugarcane when green manured into the soil before planting sugarcane. Although cowpea, tapilan and jackbean showed good potential as green manure, it is more profitable if they are harvested at full maturity.
- Residual effects of Crotolaria and Sesbania green manuring on the succeeding ratoon crop (1997)
- Oscar Quilloy
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- Growth and yields of ratoons were not significantly affected by green manuring of the field before establishment of the plant cane. Soil pH, organic matter and available P contents of the soil were similarly not influenced although exchangeable K was increased by the Crotolaria juncea green manure. Continuous practice of green manuring on fallowed fields and intercropping of ratoons are recommended to improve soil fertility.
