Studies on flowering and fruiting behaviour of guava, (Psidium guajava L.)
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Date
2014
Authors
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Publisher
CCSHAU
Abstract
The present investigations entitled Studies on flowering and fruiting behaviour of guava
(Psidium guajava L.) , was carried out on the eight year old guava trees cv. Hisar Safeda planted at a
spacing of 6 m x 6 m in orchard at Department of Horticulture, Chaudhary Charan Singh Haryana
Agricultural University, Hisar during the year 2013-14. The tagging was done on fifth and 20th day of
every month on the three branches in different directions on guava trees. The T1 is marked for the date
05/01/2013, T2 for 20/01/2013, T3 for 05/02/2013 and up to T24 (20/12/2013). The highest flowering
(38.00) and fruit yield (23.43 kg/plant) were recorded in T8 (20/04/13) whereas it was minimum in T4
(20/02/13) and T3 (05/02/13), respectively. The maximum days required for fruit set were (14.33)
observed in T1 (05/01/13) and minimum in T8 (20/04/13). The maximum fruit set percentage (82.00)
was observed in T22 (20/11/13) whereas it was minimum in T10 (20/05/13). The maximum days
required for fruit ripening (131.33) was observed in T20 (20/10/13) and minimum in T9 (05/05/13). The
minimum fruit drop percentage was observed in T19 (05/10/13) and it was maximum in T8 (20/04/13).
The highest TSS (12.84%) and ascorbic acid (207.76 mg/100g) content was observed in the fruits of
T16 (20/08/13) and T15 (05/08/13), respectively. The acidity was found lowest (0.45%) in T16 (20/08/13).
The pectin content was found maximum (0.74 %) in T19 (5/10/13) and minimum in T1 (05/01/13). The
maximum fruit weight (158.52 g) was recorded in T15 (5/08/13) whereas it was minimum in T3
(05/02/13). The 100 seed weight (1.15 g) and number of seeds per fruit were (390.9) were found
maximum in T18 (20/09/13) and T17 (05/09/13) and it was minimum in T1 (05/01/13) and T8 (20/04/13),
respectively.
Description
Keywords
Fruits, Developmental stages, Guavas, Acidity, Sets, Biological phenomena, Sowing, Seasons, Biological development, Vitamins