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Journal of Experimental Agriculture International, ISSN: 2457-0591, ISSN: 2231-0606 (Past),Vol.: 23, Issue.: 6


Morphophysiology of “Crioulo” Cashew Rootstock Seedlings under Saline Water Irrigation and Potassium Silicate Doses


Reynaldo Teodoro de Fatima1*, Reginaldo Gomes Nobre2, Leandro de Pádua Souza3, Geovani Soares de Lima3, Hans Raj Gheyi3, Evandro Manoel Silva3, Elcimar Lopes da Silva2 and Sabrina Gomes de Oliveira2

1Center of Agrarian Sciences, Federal University of Paraíba, Areia, Brazil.

2Center of Science and Agri-Food Technology, Federal University of Campina Grande, Pombal, Brazil.

3Academic Unit of Agricultural Engineering, Federal University of Campina Grande, Campina Grande, Brazil.

Article Information


(1) Peter A. Roussos, Assistant Professor, Laboratory Pomology, Agricultural University of Athens, Greece.


(1) Hani Mansour, Egypt.

(2) Golgen Bahar Oztekin, Ege University, Turkey.

Complete Peer review History: http://www.sciencedomain.org/review-history/25075


Aims: This work aimed to evaluate the effects of saline water and potassium silicate on the physiological and morphological changes of “Crioulo” cashew rootstock seedlings.

Study Design: The experimental design was the randomized block, corresponding to five levels of irrigation water electrical conductivity – ECw and five doses of potassium silicate, with four replicates and two plants per plot

Place and Duration of Study: The study was carried out in a greenhouse at the Center of Sciences and Agri-Food Technology of the Federal University of Campina Grande, Campus of Pombal – PB, Brazil, between August and November of 2017.

Methodology: The five levels of irrigation water electrical conductivity – ECw (0.3; 1.0; 1.7; 2.4 and 3.1 dS m-1) were prepared by the addition of NaCl, CaCl2 and MgCl2, maintaining an equivalent proportion of 7:2:1, respectively, in the water from the local supply system (0.3 dS m-1); the five doses of potassium silicate (0, 250, 500, 750 and 1000 mg L-1) were applied on the leaves, using the  commercial product Quimifol Silício, composed of 10% silicon (Si) and 10% potassium (K), completely soluble in water. The plant material was the “Crioulo” cashew genotype, adapted to semi-arid conditions, obtained from a commercial plantation area located in the municipality of Severiano Melo – RN, Brazil, and widely used in the production of rootstocks in seedling production nurseries of the region.

Results: Irrigation with 1.7 dS m-1 water causes acceptable reduction of 10% in the morphophysiology of “Crioulo” cashew rootstocks seedlings; the estimated potassium silicate dose of 524,78 mg L-1 led to improvements in the physiology, morphology and quality of the cashew rootstocks seedlings.

Conclusion: The "Crioulo" cashew rootstocks seedlings present moderate resistance to the salinity of the irrigation water; irrespective of salinity of irrigation water, fertilization with potassium silicate improves the morphophysiological characteristics.

Keywords :

Anacardium occidentale L.; abiotic stress; fertilization management; seedling production.

Full Article - PDF    Page 1-11

DOI : 10.9734/JEAI/2018/42289

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