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9th International Rainwater Catchment Systems Conference
"Rainwater Catchment: An Answer to the Water Scarcity of the Next Millennium."
Petrolina, Brazil - July 1999

Section 8: Rainwater Catchment Systems in Agriculture

Paper 8.7

Maintenance of Productive Soil Capacity Through "in situ" Rainwater Catchment Systems

Roberto Coelho Lopes, José Barbosa dos Anjos, Aderaldo de Souza Silva, Everaldo Rocha Porto, Maria Sonia Lopes da Silva & Gilberto Gomes Cordeiro
EMBRAPA - Semi-árido
Caixa Postal 23
56.300-000, Petrolina -PE, Brasil


The effect of organic and chemical fertilizers applied at time were evaluated together with "in situ" rainwater catchment in zea crop. Two rainwater catchment techniques were used, one known as W and other as Guimarães Duque. Five treatments were used as follows: 1.Control (without fertilizers); 2. rainwater catchment plus manure; 3. rainwater catchment plus phosphorus; 4. rainwater catchment plus organic composite, and 5. rainwater catchment plus manure plus phosphorus. The same trend was observed in all treatments in both rainwater catchment systems. Treatment 5 showed the highest corn yield, followed decreasing by treatment 4, 3, 2 and the control. All the treatments showed higher yield in the rainwater W catchment technique than in the Guimarães Duque technique, indicating a better efficiency of the first for water storage in the soil.

PDF of full document (6pp, 100kb)

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