Saline water and potassium fertilization in cultivation of grafted west indian cherry ˜BRS 366 Jaburu

Authors

  • Francisco Wesley Alves Pinheiro Universidade Federal de Campina Grande
  • Geovani Soares de Lima Universidade Federal de Campina Grande
  • Hans Raj Gheyi Universidade Federal do Recôncavo da Bahia
  • Adaan Sudário Dias Universidade Federal de Campina Grande
  • Rômulo Carantino Lucena Moreira Universidade Federal de Campina Grande
  • Reginaldo Gomes Nobre Universidade Federal de Campina Grande
  • Lauriane Almeida dos Anjos Soares Universidade Federal de Campina Grande

DOI:

https://doi.org/10.14393/BJ-v35n1a2019-41726

Keywords:

Malphigia emarginata, saline stress, osmoregulation.

Abstract

Agricultural exploitation in the semi-arid region of Northeast Brazil depends on the use of irrigation to guarantee safe production of crops. Nevertheless, the waters commonly used in this region have high levels of salts and require management strategies that make their use possible in agriculture. In this context, the present study aimed to evaluate water relations, photosynthetic pigments and growth of grafted West Indian cherry as a function of saline water irrigation and potassium (K) fertilization. The study was conducted under greenhouse conditions in lysimeters filled with eutrophic Regolithic Neosol with sandy loam texture, in the municipality of Campina Grande-PB, Brazil. Treatments were distributed in randomized blocks and consisted of two factors: two levels of irrigation water electrical conductivity - ECw (0.8 and 3.8 dS m-1) and four K doses (50, 75; 100 and 125% of the recommendation), with three replicates and one plant per plot. The 100% dose corresponded to 19.8 g of K2O per plant per year. The West Indian cherry crop was sensitive to water salinity of 3.8 dS m-1 in the post-grafting phase, resulting in a decline in photosynthetic pigment content and growth. Increasing K doses reduced the percentage of cell membrane damage and promoted increase in the synthesis of chlorophyll a and carotenoids in West Indian cherry plants. There was significant interaction between salinity levels and K doses for the leaf osmotic potential, water saturation deficit, percentage of cell membrane damage and chlorophyll b content in West Indian cherry plants.

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Published

2019-02-17

How to Cite

PINHEIRO, F.W.A., LIMA, G.S. de, GHEYI, H.R., DIAS, A.S., MOREIRA, R.C.L., NOBRE, R.G. and SOARES, L.A. dos A., 2019. Saline water and potassium fertilization in cultivation of grafted west indian cherry ˜BRS 366 Jaburu. Bioscience Journal [online], vol. 35, no. 1, pp. 187–198. [Accessed23 May 2022]. DOI 10.14393/BJ-v35n1a2019-41726. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/41726.

Issue

Section

Agricultural Sciences