Influence of plaster and biofertilizer on chemical attributes of a saline sodic soil and on initial growth of sunflower [Influência do gesso e biofertilizante nos atributos químicos de um solo salino-sódico e no crescimento inicial do girassol]
Sa F.V.S.,Rural University |
de Mesquite E.F.,State University of Paraiba |
Bertino A.M.P.,CCHA UEPB |
Costa J.D.,CCHA UEPB |
Araujo E.L.,Federal University of Campina Grande
IRRIGA | Year: 2015
The objective of this study was to evaluate the effects of plaster and biofertilizer levels on the chemical attributes of a saline sodic soil and on initial growth of sunflower. The experiment was conducted in a greenhouse of the Center of Humanities and Agricultural Sciences, Paraiba State University (CCHA-UEPB), Campus IV Catole Rocha-PB, Brazil. Treatments were applied using a 4 x 2 factorial design with four levels of gypsum (25; 50; 75; 100% of the plaster need) in the absence and presence of bovine biofertilizer (0 and 10% v/v) and three replicates. After treatment application, soil incubation and subsequent washing, the sunflower plants cv CF/01 ADVANTA were grown for 30 days. Gypsum application reduced soil salinity and sodicity. Plaster need of 100% led to the greatest reductions in sodium adsorption ratio (SAR) and exchangeable sodium percentage (ESP), with values lower than 12 (mmolc L-1)-0.5and 15%, respectively. Optimal sunflower plant development was observed in the presence of soil biofertilizer. The gypsum and biofertilizer association favored the correction of saline sodic soil and cultivation of sunflower plants. © 2015, Universidade Estadual Paulista - UNESP. All rights reserved.
Dos Santos J.G.R.,CCHA UEPB |
Andrade R.,CCHA UEPB |
Galdino P.O.,UEPB |
Linhares A.S.F.,CCHA UEPB |
And 2 more authors.
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2014
The objective of this research was to study the effects of 5 doses of 4 different types of biofertilizer in production of banana Nanicão in 3 successive cycles. The experiment was conducted under field conditions at Escola Agrotécnica of the Cajueiro in the municipality of Catolé do Rocha, in the state of Paraíba, Brazil. The soil in the area is classified as Entisol with sandy loam texture. The experiment was conducted during June 2008 to June 2011. The experimental design was a randomized block design with 20 treatments in a 5×4 factorial scheme (doses × types) of biofertilizers with four replications. The results show that the types of biofertilizers did not affect the production quality, the length and diameter of fruit increased with increasing dose of biofertilizer to optimum limits, the length of the fruit of the second cycle was more than that of plants of first and third cycles, the diameter of the fruit of the second cycle of the crop was higher than the first and third cycles and values of oBrix and pH of the pulp of the fruit were not affected by biofertilizer doses.