Yield sustainability through micronutrient management in Guava


  • T Adak ICAR- Central Institute for Subtropical Horticulture, Rehmankhera, Lucknow-226101, Uttar Pradesh, India Author https://orcid.org/0009-0009-1172-2395
  • K Kumar ICAR- Central Institute for Subtropical Horticulture, Lucknow - 226101, Uttar Pradesh, India Author
  • A N Ganeshamurthy ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bengaluru, India Author https://orcid.org/0000-0001-5199-5333
  • G Pandey ICAR- Central Institute for Subtropical Horticulture, Lucknow - 226101, Uttar Pradesh, India Author




Fruit pulp, guava, micronutrient, sustainability index, yield


A field study conducted with soil and foliar application of ZnSO4 and borax at different phenological stages of guava cv. Shewta in sandy loam soil, revealed that highest sustainable yield index (0.80) was recorded with two sprays of 0.4% ZnSO4 + 0.2% borax during fruit growth at one month interval, followed by 0.63 with three sprays of 0.4% ZnSO4 + 0.2% borax before flowering, fruit set and during fruit growth. Highest TSS (13.13°Brix), acidity (0.652%) and ascorbic acid (262.21 mg/100 g) was recorded in two sprays of 0.4% ZnSO4 + 0.2% borax at fruit growth in one month interval. Significant differences in Zn and B content in guava fruit pulp was recorded. It was noted that Guava fruit pulp had Zn content of 13.7 mg kg-1 in control tree fruits while 14.6 to 16.5 mg kg-1 in treated trees. Moreover, guava fruit pulp enriched with B (14.3 to 17.3 mg kg-1) in treated tree fruits as compared to 12.4 mg kg-1 in control trees. Micronutrient contents in leaf tissues showed significant difference in Zn and B concentration, whereas, Fe, Mn and Cu contents were statistically non-significant. The index suggested for attaining the sustainability and to economize the nutrient application, technology package consisting of two sprays of 0.4% ZnSO4 and 0.2% borax during fruit growth at one month interval should be adopted at growers’ field.


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Original Research Papers

How to Cite

Adak, T., Kumar, K., Ganeshamurthy, A. N., & Pandey, G. (2023). Yield sustainability through micronutrient management in Guava. Journal of Horticultural Sciences, 18(2). https://doi.org/10.24154/jhs.v18i2.1860

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