PRODUCTIVITY OF IRRIGATED PEANUT PLANTS UNDER PULSE AND CONTINUOUS DRIPPING IRRIGATION WITH BRACKISH WATER

• Autor(a) principal: Cruz, Ruana Iris Fernandes
• Data de Publicação: 2021
• Outros Autores: Silva, Gerônimo Ferreira da, Silva, Manassés Mesquita da, Silva, Alan Henrique Santos, Santos Júnior, José Amilton, França e Silva, Ênio Farias de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Caatinga
• Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/9455
• topic: Arachis hypogaea L. Salinidade. Cloreto de sódio. Irrigação por pulsos.; Arachis hypogaea L. Salinity. Sodium chloride. Pulse irrigation.

Pulse irrigation may be more advantageous for peanut crops than continuous irrigation, when using brackish water. However, studies on pulse irrigation with brackish water considering the environmental conditions of the Northeast region of Brazil using are incipient. Therefore, the objective of this study was to evaluate the effect of using brackish water for pulse and continuous dripping irrigations on the grain yield and production characteristics of peanut (Arachis hypogaea L.) crops. A completely randomized block design with four repetitions was used, in a 6×2 factorial arrangement consisted of six electrical conductivities of the irrigation water (EC; 0.2, 1.6, 2.8, 4.0, 5.2, and 6.4 dS m-1) set by adding NaCl to the irrigation water, which originally had 0.2 dS m-1, until reaching the respective EC; and two irrigation methods (pulse and continuous). The evaluated variables were fresh and dry weights of shoot, 10 grains, pods, grains, and production; number of pods and grains; and percentages of empty pods (EP%) and perfect grains (PG%). The addition of salt to the irrigation water negatively affected all variables studied, except for EP% and PG%. The lowest EP% were found for the pulse irrigation, which increased the pod and grain yields, regardless of the EC of the irrigation water. Under the conditions of the present study, the use of brackish waters with electrical conductivities of up to 2.98 dS m-1 is viable for peanut production.