Production of pearl millet irrigated with different levels of brackish water and organic matter.
2020
LIRA, J. B. de | ANDRADE, A. P. de | MAGALHÃES, A. L. R. | CAMPOS, F. S. | ARAUJO, G. G. L. de | SIGNOR, D. | GOIS, G. C. | REGITANO NETO, A. | CUNHA, D. de S. | TABOSA, J. N. | SILVA, T. G. F. da | NAGAHAMA, H. de J. | Jaciele Beserra de Lira; Alberício Pereira de Andrade; André Luiz Rodrigues Magalhães; Fleming Sena Campos; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; DIANA SIGNOR DEON, CPATSA; Glayciane Costa Gois; AMADEU REGITANO NETO, CPATSA; Diego de Sousa Cunha; José Nildo Tabosa; Thieres George Freire da Silva; Hideo de Jesus Nagahama.
The objective is to determine the growth, yield and chemical characteristics of pearl millet irrigated with different levels of brackish water and organic matter in two cultivation cycles. The experimental design was randomized blocks in a 4 × 4 factorial arrangement, composed of 4 levels of brackish irrigation (25, 50, 75 and 100% evapotranspiration), 4 levels of organic matter (0, 15, 30 and 45 t ha−1) with 3 repetitions. Along two cultivation cycles, pearl millet crop was analyzed for: plant growth variables, fresh and dry mass production, water-use efficiency, and chemical composition. There was significant interaction between applied water levels and organic matter for lignin in the 2nd cut (P < .05). The number of leaves, number of dead leaves and fresh mass production were influenced by the isolated effect of brackish water levels in cut 1 (P < .05). In turn, fresh mass production, dry mass production, plant height, leaves length, panicle length, fresh mass production, crude protein and ether extract were influenced by the isolated effect of saline water levels in the 2nd cut (P < .05). Growth, biomass production and chemical composition variables in second cut are positively influenced by different brackish irrigation levels under low rainfall conditions.
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