SciELO - Scientific Electronic Library Online

 
vol.41 issue4Inoculation and application of different doses of nitrogen in bean cropProduction of yellow and purple passion fruit seedlings irrigated with salt water and use of cow urine author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • Have no similar articlesSimilars in SciELO

Share


Revista de Ciências Agrárias

Print version ISSN 0871-018X

Abstract

BONIFACIO, Benedito F. et al. Effects of potassic fertilization and irrigated with saline water in growth of rootstock of guava. Rev. de Ciências Agrárias [online]. 2018, vol.41, n.4, pp.101-110. ISSN 0871-018X.  http://dx.doi.org/10.19084/RCA18119.

The objective of this work was to evaluate the effects of different irrigation water salinities on the growth of guava rootstock cv. Paluma fertilized with increasing doses of potassium, in an experiment conducted under greenhouse conditions of the CCTA / UFCG municipality of Pombal - PB. The experimental design was a randomized complete block design in a 5 x 4 factorial scheme, whose treatments resulted from the combination of five levels of electrical conductivity of the irrigation water (ECw = 0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four doses of potassium (70, 100, 130 and 160% K), the dose corresponding to 100% K corresponding to 726 mg K dm-3 substrate, with four replicates and two plants per plot, no border. The increase of salinity of the irrigation water reduces the growth of guava rootstock cv. Paluma, the most deleterious effects being at levels above 1.9 dS m-1; increasing doses of K up to 1161.6 mg K dm-3 substrate did not attenuate the harmful effects of the salts, nor did they exert any difference on the growth of most of the variables of guava rootstock cv. Paluma at 120 and 225 days after the emergency.

Keywords : Psidium guajava L.; salt stress; potassium.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License