Studies on the effect of time and level of pruning on growth, flowering and yield of guava (Psidium guajava L.)
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Date
2009
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Publisher
CCSHAU
Abstract
Investigation on “Studies on the effect of time and level of
pruning on growth, flowering and yield of guava (Psidium guajava L.)”
was carried out at the experimental orchard of the Department of
Horticulture, CCS Haryana Agricultural University, Hisar, during the year
2008-09. Experiment was laid out with split pot design allocating three
pruning times i.e. third week of April, first week of May and third week of May
and four pruning level i.e. 0, 10, 20, and 30 cm tip removal comprising 12
treatment combination altogether. Treatment was replicated three times with
single plant per replication. During the course of studies, it was found that
number of leaves per shoot and leaf area increased significantly in severe
pruning and in pruning during first week of May in rainy and winter season.
Fruit size and fruit weight increased but TSS and acid content of fruit
declined markedly with increase in level of pruning and delay in pruning time
in both seasons. Pruning during first week of May in 20 cm pruning level
proved to be significantly superior to other pruning treatments for number of
fruits per shoot and yield per plant in winter season. Leaf tissue analysis
indicated the increase in nitrogen and phosphorous content with increase in
level of pruning and delayed pruning time. Similarly, foliar potassium was
found increasing with severity of pruning but decreasing with delay in
pruning time in both rainy and winter season.
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