Bhatia, S.K.Amar Nath Singh2016-10-052016-10-052014http://krishikosh.egranth.ac.in/handle/1/79936The 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.enFruits, Developmental stages, Guavas, Acidity, Sets, Biological phenomena, Sowing, Seasons, Biological development, VitaminsThesis