Response of tomato to nitrogen levels with or without humic acid
2013
Aman, S. (The Univ. of Agriculture, Peshawar (Pakistan). Dept. of Horticulture) | Rab, A. (The Univ. of Agriculture, Peshawar (Pakistan). Dept. of Horticulture)
An experiment was conducted to study the response of tomato to nitrogen levels with or without Humic acid on yield and yield components of tomato `Advanta-1209' sown at New Developmental Farm (Horticulture section). The University of Agriculture, Peshawar, Pakistan, during summer 2011. The experiment was laid out in Randomized Complete Block Design with spilt plot arrangements having three replications. The experiment involved two factors, Humic acid (0 and 5 kg per ha) allotted to main plot and nitrogen (0, 25, 50, 75, 100, 125 and 150 kg per ha) kept in sub plots. The results showed that leaf length (cm), plant height (cm), fruit weight (g), and yield (t per ha) were significantly affected, whereas survival percentage and blossom end rot to fruits were not significantly affected by Humic acid and nitrogen levels and interaction of both. High leaf length (6.43 cm), plant height (82.92 cm), fruit weight (75.27 gm) and yield (28.49 t per ha) were produced by Humic acid applied at the rate of 5 kg per ha and maximum leaf length (6.88 cm), plant height (89.16 cm), fruit weight (78.82 gm) and yield (32.43 t per ha) were recorded by nitrogen applied at the rate of 125 kg per ha. From this study it can be concluded that tomato plants should be treated with fertilizers, Humic acid and nitrogen at the rate of 5 kg and 125 kg per ha, respectively to obtain maximum and quality yield.
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