PJB-2019-667
“EFFECT OF KNO3 AND BORIC ACID FOLIAR APPLICATION ON GROWTH, YIELD AND OIL QUALITY OF OLIVE (Olea europaea)”
Yasir Ali
Abstract
The research study was carried out to examine the effect of potassium nitrate and boric acid foliar application on growth, yield and oil quality of olive (Olea eurapaea L). The experiment was arranged in two factors RCB design and different varieties and treatments. The boric acid applied at three stages (before bud initiation, after bud initiation and 1st blooming stage) and the potassium nitrate were applied at three stages (Pre-blooming, fruit set and after 20 days of fruit set) on two varieties of olive. The maximum result showed in treatment K450+B600 in plant canopy (9.18 m3), number of flowers (15.9), fruit set (6.73 %), fruit yield (23.66 kg), fruit length (21.05 mm), fruit width (13.05mm), fruit flesh (70.69 %), fruit stone (36.32 %), and oil content (12.96 %) were recorded in different replication. The highest value of fruit weight were showed in arbequina (2.64 g), leaf area (3.27cm2) and fruit volume were showed in coratina (2.45 ml) respectively. The minimum result of plant canopy were showed (3.81m3), number of flowers (8.01), fruit set (3.05), fruit yield (17.18 kg), fruit width (11.88 mm), fruit flesh (63.43 %), and oil content (8.67%) were recorded. The lowest leaf area in variety coratina (2.86 cm2) and fruit weight (1.79 g) and minimum fruit stone in arbequina variety (31.85 %) and fruit volume (1.58 ml) were recorded in different replication. Foliar application of boron and potassium performed better in term number of flowers, fruit set, fruit yield, fruit width, fruit flesh, fruit length, fruit stone, plant canopy and oil content. Boron 600 ppm and potassium 450 ppm performed better in terms of all quality and yield parameter.
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