Abstract
The salinity is one of the stresses that more limits the income of the agricultural cultures, mainly in areas semiarid as the Northeast, though, it is known that the biostimulants are substances capable to alter the metabolism of the plant and to favor development under adverse conditions of stresses. In this context, it was aimed at with this work to evaluate the initial growth of the passion fruit plant irrigated with saline water and the application of biostimulants. The experiment was conducted at the Federal University of Campina Grande, campus Pombal, in factorial outline 5 × 3, corresponding to five salinity levels (S1 = 0.3; S2 = 2.3; S3 = 3.3; S4 = 4.3 and S5 = 5.3 dS m-1) and two biostimulants (B1 = Acadian and B2 = Crop Set) and treatment testifies (without an application of biostimulant). The dose used for each product was 4 ml L-1 of Acadian and 3 ml L-1 of Crop Set. It was used seeds of the passion fruit of the variety BRS-giant, sowed in containers of black polypropylene of 400 ml, containing sand and substrate Carolina Soil, in the proportion 1:1. For the 32 days after the sowing was determined the height, the root length, the fresh and dry mass (aerial, root and total) of plants, the biomass production and the index of tolerance the salinity. The data were submitted to the variance analysis of the test F at the level of 5% of probability, and when significant, the averages were submitted to the test Tukey for both factors, saline levels and biostimulants. The use of vegetable biostimulants increases the initial growth of the yellow passion fruit plant. The salinity in the irrigation water attacks the growth, however, I use of the biostimulant Crop Set lessens the harmful effect in passion fruit seedlings.
Highlights
Belonging to the family Passifloraceae the yellow passion fruit plant (Passiflora edulis Sims. f. flavicarpa Deg.) it represents one of the most fruitful of larger socioeconomic prominence in Brazil, due to the quality of their fruits, of the largest industrial income and still for the generation of jobs during cultivation (Zacharias et al, 2016).Among the producing areas the Northeast is responsible for more of the half of the national production, areas semiarid as it is the case of the Northeast, they are dependent on the irrigation use, tends to view the precipitation irregular rainfall during the year
The initial growth of the yellow passion fruit plant was influenced significantly (p > 1) for the saline levels in the irrigation water and biostimulant application in all of the phenological parameters appraised, demonstrating that the factors salinity in the irrigation water and biostimulant application acts in a united way (Table 1)
The height of the seedlings of yellow passion fruit plant (Table 2) was influenced so much by the saline levels in the irrigation water as for the application of the biostimulants, it was observed that were verified in the absence of the application of the biostimulant to the smallest averages, the use of the same ones increased the growth in height, it didn’t lessen the noxious effect of the saline stress
Summary
Belonging to the family Passifloraceae the yellow passion fruit plant (Passiflora edulis Sims. f. flavicarpa Deg.) it represents one of the most fruitful of larger socioeconomic prominence in Brazil, due to the quality of their fruits, of the largest industrial income and still for the generation of jobs during cultivation (Zacharias et al, 2016).Among the producing areas the Northeast is responsible for more of the half of the national production, areas semiarid as it is the case of the Northeast, they are dependent on the irrigation use, tends to view the precipitation irregular rainfall during the year. The height of the seedlings of yellow passion fruit plant (Table 2) was influenced so much by the saline levels in the irrigation water as for the application of the biostimulants, it was observed that were verified in the absence of the application of the biostimulant to the smallest averages, the use of the same ones increased the growth in height, it didn’t lessen the noxious effect of the saline stress.
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