Singh, P.N.Singh, Saurabh Kumar2017-08-242017-08-242016-09http://krishikosh.egranth.ac.in/handle/1/5810029550The present investigation was carried out at Horticulture Research Centre (H.R.C.), Patharchatta, and Department of Horticulture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar (Uttarakhand) to find out effect of Pseudomonas fluorescens (PBAT-27) inoculation and foliar spray of FeSO4.7H2O (0.5%) on low chill peach cultivars for managing iron chlorosis, during 2014-15 and 2015-16 growing season. Two separate experiments were planned. In first experiment, one year old plants of low-chill peach cv. Pant Peach-1 were selected for pot experiment. The experiment consisted of eight treatments viz. control (water spray), Pseudomonas fluorescens (PBAP-27), FeSO4. 7H2O (0.5%) spray once, FeSO4. 7H2O (0.5%) spray twice, FeSO4. 7H2O (0.5%) spray thrice, Pseudomonas fluorescens (PBAP-27)+FeSO4.7H2O (0.5%) spray once, Pseudomonas fluorescens (PBAP-27)+FeSO4.7H2O (0.5%) spray twice, Pseudomonas fluorescens (PBAP-27)+FeSO4.7H2O (0.5%) spray thrice with four replications in Completely Randomized Design. In second experiment, the experiment was conducted on seven year old trees of peach cv. Flordaprince. The experiment was laid out in Splitplot Design with 8 treatments viz. No inoculation+ No foliar spray, No inoculation+ Foliar spray of FeSO4. 7H2O (0.5%) once, No inoculation+ Foliar spray of FeSO4. 7H2O (0.5%) twice, No inoculation+Foliar spray of FeSO4. 7H2O (0.5%) thrice, Inoculation of Pseudomonas fluorescens (PBAP-27)+ No foliar spray, Inoculation of Pseudomonas fluorescens (PBAP-27)+Foliar spray of FeSO4. 7H2O (0.5%) once, Inoculation of Pseudomonas fluorescens (PBAP-27)+Foliar spray of FeSO4. 7H2O (0.5%) twice, Inoculation of Pseudomonas fluorescens (PBAP-27)+Foliar spray of FeSO4. 7H2O (0.5%) thrice, and each treatment was replicated four times. The results, in both experiments, showed significant variation in plant height, number of leaves per shoot, chlorophyll ‘a’, chlorophyll ‘b’ total chlorophyll, active iron, total iron, ferric iron, manganese content of leaves and iron: manganese ratio of leaves among the different treatments. In addition to growth and biochemical parameters, in second experiment, flowering, fruit set, yield and fruit quality parameters were also studied. A significant variation in fruit drop, number of fruits per tree, fruit yield, fruit length, fruit breath, increasing fruit weight, fruit volume, stone weight, pulp weight, TSS of fruit, acidity of fruit, ascorbic acid content in fruit pulp and T.S.S and acid ratio of fruit with the inoculation of Pseudomonas fluorescens (PBAP-27) and Foliar spray of FeSO4.7H2O (0.5%). It is concluded that the inoculation of Pseudomonas fluorescence and foliar spray of ferrous sulphate were effective for application of iron to plants suffering from chlorosis under the iron limiting condition of soil.ennullThesis