MEDEIROS, A. B.; http://lattes.cnpq.br/3359992747110989; MEDEIROS, Anderson Barbosa de.
Resumen:
The scarcity of good quality water and the occurrence of long periods without rainfall
are limiting factors for irrigated agriculture, mainly in semi-arid regions, which induce
the use of salt water and the use of technologies that allow the use of these waters in the
production agricultural. In this sense, the objective of this study was to evaluate the
influence of foliar proline doses on the physiological, growth and quality responses of
BRS 226 cashew rootstock irrigated with waters of different saline levels. The
experiment was carried out in a protected environment of the Federal University of
Campina Grande of the Agro-Food Science and Technology Center, Campus Pombal -
PB, where a randomized block design was used in a 5 x 4 factorial scheme with three
replications and two plants (0.3, 1.0, 1.7, 2.4 and 3.1 dS m-1) associated to the doses of
proline applied via the irrigation water foliar - P (0, 4, 8 and 12 mmol L-1).Gaseous
exchanges, growth and root quality are reduced by increasing ECa of irrigation water,
however, irrigation with ECa water of up to 1.12 dS m-1, promotes acceptable
reductions of 10% in morphophysiology of cashew BRS 226. Dose of 8 mmol L-1 of
proline attenuated the negative effects of water salinity on the Dickson Quality Index
and dried cashew root phytomass at 65 days after sowing. The increase in proline
concentrations did not attenuate the effects of salinity on the physiology variables.
