Vol. 7, Issue 3 (2019)
Assessment of humic acid coated phosphatic fertilizers on soil p status, yield and quality of hybrid tomato
Author(s): Kavya Umesh, RK Kaleeswari and KB Sujatha
Abstract: The field experiment was laid out in Randomized Completely Block Design (RBCD) and consisted of ten treatments and replicated thrice. The treatments comprised of T1: 100% NK as KNO3 + P @ 250 kg ha-1 as MAP, T2: 100% NK as KNO3 + P @ 250 kg ha-1 as SSP, T3: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated MAP (5%), T4: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated MAP (10%), T5: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated MAP (15%), T6: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated MAP (20%), T7: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated SSP (5%), T8: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated SSP (10%), T9: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated SSP (15%), T10: 100% NK as KNO3 + P @ 250 kg ha-1 as HA coated SSP (20%). The results revealed that genetic characters like plant height and quality parameters (lycopene content, ascorbic acid content, titrable acidity) of tomato fruit was not significantly affected by change in humic acid concentrations of coatings of MAP and SSP. But tomato yield and soil available phosphorous was significantly affected. A significantly higher yield was observed in T4 which was statistically identical to T1 and T3 treatments. The lowest yield was recorded for T2 and T10. T3 and T4 recorded the highest soil available P compared to others. MAP treatments performed better compared to SSP treatments.
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How to cite this article:
Kavya Umesh, RK Kaleeswari, KB Sujatha. Assessment of humic acid coated phosphatic fertilizers on soil p status, yield and quality of hybrid tomato. Int J Chem Stud 2019;7(3):4393-4397.