Effect of Chemical and Granular Organic Fertilizer with Hormone Mixed Formula (HO) on soil improvement and growth of Marigold (Tagetes erecta L.)
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In this experiment a new chemical and granular organic fertilizer with hormone mixed formula (HO) was developed and tested in combination with NPK. Fifteen treatments were arranged in Randomized Complete Block Design (RCBD). Vegetative growth variables namely: plant height plant-1 (54.47 cm), stem diameter plant-1 (9.55 mm), number of branches plant-1 (9.60), canopy spread plant-1 (45.40 cm), leaf chlorophyll content plant-1 (85.92 SPAD units) at 60 DAP, total dry matter plant-1 (59.67 g) and shortest days to 80% blooming plot-1 (72.33) were highest in T15. Percentage increment in plant height and total dry matter of T15 over the control (T1) were 25% and 86.1% respectively. Similarly, maximum improvement in soil properties via: N (0.08 %), P (26.28 ppm), K (254.43 ppm) and Ca, Mg, Fe, Mn, Cu and Zn were realized in T15. The best soil pH (6.10) was recorded in T14. Additionally, T15 again realized the most enhanced OM (1.33%), CEC (20.90 mg 100g-1, EC (195 uS cm-1) and water content (WC) (8.09%). Increasing fertilizer dosage from 100 kg rai-1 to 150 kg rai-1 did not impact marigold growth and residual soil properties much, except T15.
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