Growth and Yield of Sweet Corn Plants (Zea mays L Var saccharata.) Effect of Providing Various Nitrogen Sources and Pruning Techniques
Abstract
Corn is a vital food component primarily due to its high carbohydrate content. This research examines the effects of various nitrogen sources and pruning methods on the growth and yield of sweet corn. The investigation occurred in Tambon Tunong Village, located in the Dewantara District of North Aceh Regency, and in the Laboratory of the Faculty of Agriculture at Malikussaleh University from February to May 2024. A randomized block design (RAK) was employed for the experimental setup, incorporating two main factors: nitrogen sources (ZA fertilizer, HX Nitro fertilizer, and Urea fertilizer) and pruning methods (No Pruning, Pruning at 45 days after sowing (HST), and Pruning at 55 HST). Nine treatment combinations were evaluated, each replicated three times, resulting in 27 experimental units with 15 plants per unit, culminating in 405 plants. The findings indicated that urea fertilizer at 300 kg/ha produced the most favorable results regarding plant height, stem diameter, cob weight, and overall corn yield (10.79 tons/ha). Additionally, pruning at 45 HST resulted in the highest measurements for stem diameter, leaf count, and corn yield (7.81 tons/ha).
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