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BIBTEX RIS

Estimates for maize yield (Zea mays L.) in rainfed and irrigated crops determined by the method of agroecological ZONE/FAO (ZAE/FAO), state of Alagoas, Brazil

2014; Volume: 8; Issue: 2 Linguagem: Inglês

10.7127/rbai.v8n200231

ISSN

1982-7679

Autores

Remy Farias de Souza, Allan Cunha Barros, A. H. C. Barros, J. N. Tabosa,

Tópico(s)

Soil Management and Crop Yield

Resumo

The aimed of this study was to calibrate the model ZAE/FAO and estimate productivity, assessing which planting periods have lower risks to maize crop in the state of Alagoas. The study was conducted at the Universidade Federal de Alagoas, in partnership with Embrapa Solos – unit Recife - PE and Instituto Agronômico de Pernambuco – IPA - PE, developed in two stages: ZAE/FAO model calibration with maize yield data obtained from the Maize Breeding Program-NE region, municipality of Araripina - PE, after calibration, scenarios were simulated for the municipalities: Arapiraca, Água Branca, Palmeira dos Índios and Porto de Pedras, obtaining yields based on the planting season (every ten days) whose CAD (19,5 – 58,5 – 65,0 mm) x cropping system (irrigated and rainfed). In calibration, the ZAE/FAO method presented "optimum"statistical performance indexes for the reliability index (CI = 0,86). The highest yield was achieved for the municipalities of Arapiraca 5.099 and 8.748 kg ha -1 , now in the municipalities of Palmeira dos Indios, with the lowest yields were 2.308 and 4.711 kg ha -1 respectively in the non-irrigated and irrigated condition. On average irrigated yields were 58% higher than non-irrigated. In the irrigated system is recommended planting maize at any time and in the months from march to may, rainiest months.

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