DANIEL, R.; http://lattes.cnpq.br/4398226052902295; DANIEL, Rossini.
Resumo:
Economy activity is of great importance for those who live in northeast region of Brazil, the
cashew tree is pointed as the main source of employment and income for small scale
producer. The study of nature and dimension of hydric regimes distinct plants are not
quantified, the information of the research of irrigation is scarce, that gives room for the
smallest recommendation for employment which makes unknown some of the characteristics
of the productive plants The purpose of this work is to evaluate the behaviour of small
premature cashew tree. {Anacardium occidentale L.) clone CCP-76 under the hydric
shortage in various phases of phonological in the second year of production. For that a
research was conducted in an environment protected in an experimental area of central
national resource technology (CTRN) of federal university of Campina Grande (UFCG), at
Campina Grande, PB district in February it 2007 to September 30th 2007 Irrigation blades
were applicated reference to 40; 55; 70; 85 e 100% the replacement of real evapotranspiration
(ETR), in stages: after repose A, growth B fructify stage C the shortage correspondent were
calculated according to the medium consumption of the plants witnessed (L5 = 100% da
ETR) at the end of each stages that was evaluated there was various growth (8 height of the
plant, numbers of leaves, numbers of falling leaves, average stem diameter and dry fitomassa
part of aerial) physicology variability (quantum efficacy of photosynthesis II and relative
water contents of the leave) at the and of cycle, at production variability (number of fruits,
length of peduncle, basalt diameter and peduncle of apical, fresh weight of peduncle and of
chestnut fresh weight of cashew and dry peduncle). The stem diameter lineally increases with
hydric shortage reduction at the beginning of the second stage (A and B) with increase of 18,
12 and 11, 02%, respectively, in relation to the smallest blade applicated (LI). All the falling
leaves occupied significant area when there is shortage of water at fructify stage. Variable
physiology studies did not affect hydric shortage in none of the stages all the
production variability were affected when stress was applied at fructify stage, however, stage
is a state where cashew premature dwarf develop more sensitively at hydric shortage of
fortification.