Abstract
In the process of production of seedlings the formulation of substrates that supply the nutritional needs and make available appropriate humidity tenor is relevant for the success and the reduction of costs of the producing with other inputs. In this perspective, it is known that alternative substrates are rich in organic matter, which possesses extenuating action for the harmful effect of the salinity. Therefore, it was aimed at to evaluate the effect of saline waters and formulations of substrates in the production of seedlings of yellow passion fruit plant. Experiment was driven in atmosphere protected in the dependences of the Federal University of Campina Grande, Pombal, Paraíba. The randomized block design was used in factorial outline 5 × 5, being five levels of salinity of the irrigation water (0.3; 1.3; 2.3; 3.3 and 4.3 dS m-1) and five substrates: S1 = soil; S2 = soil, goat manure and bovine manure (1:1:1); S3 = soil and goat manure (3:1); S4 = soil and bovine manure (3:1); S5 = soil, goat manure and bovine manure (3:0.5:0.5). To the 52 days after the sowing the growth analyses and quality of the seedlings were checked. The growth of the passion fruit plant seedlings was inhibited by the salinity in the irrigation water. However, the use of organic inputs in the formulation of the substratum lessens the harmful effect of the saline stress, being the best substratum, soil and bovid manure in the proportion 3:1.
Highlights
The yellow passion fruit plant (Passiflora edulis Sims f. flavicarpa Deg.), it belongs to the family Passifloraceae and to the gender Passiflora, is a fruitful species thoroughly cultivated in tropical and subtropical climate and that it presents great economical and social relevance to Brazil (Bernacci et al, 2013; Silva, Machado, Santos, & Azevedo, 2016)
Works that seek the production of formulations of alternative substrates for the production of seedlings, seeking mitigation of the effect caused by the saline stress in the culture of the passion fruit plant are scarce (Oliveira et al, 2015), which it would be an alternative for the producer as cost reduction and use of salty water
When analyzing the quality of the seedlings (IQD) of yellow passion fruit plant, it was possible to verify that the best substrate was S3, since the highest values (0.61) and the lowest reductions (13.09% between the largest and smaller saline level) they were observed in this substrate, possibly for the electric conductivity of the goat manure (0.74 dS m-1) to be inferior to the bovine manure (6.47 dS m-1), with smaller accumulations associated the daily addition of saline solution in the substrate
Summary
The yellow passion fruit plant (Passiflora edulis Sims f. flavicarpa Deg.), it belongs to the family Passifloraceae and to the gender Passiflora, is a fruitful species thoroughly cultivated in tropical and subtropical climate and that it presents great economical and social relevance to Brazil (Bernacci et al, 2013; Silva, Machado, Santos, & Azevedo, 2016). Works that seek the production of formulations of alternative substrates for the production of seedlings, seeking mitigation of the effect caused by the saline stress in the culture of the passion fruit plant are scarce (Oliveira et al, 2015), which it would be an alternative for the producer as cost reduction and use of salty water. In this context, it was aimed at with this work to evaluate the production of seedlings of yellow passion fruit plant submitted to different substrates and different saline waters
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