The growth and yield of hybrid corn on different plant spacing

Abstract

Plant spacing affects the number of plants, the process of receiving sunlight, water and nutrients which also affect the process of photosynthesis and assimilation between plants. The aim of this research was to examine the effect of different plant spacing and to evaluate plant spacing that could increase the growth and yield of hybrid corn. This research was conducted in UNS experimental field Jumantono, Karanganyar from June-November 2019. Design utilization was experimental method with Randomized Completed Block Design (RCBD) of 1 factor, consist of 4 levels, the treatment was 60 cm × 30 cm (J1); 60 cm × 40 cm (J2); 60 cm × 50 cm (J3); and 60 cm × 60 cm (J4). There was replicated 6 times. The result showed that plant spacing of 60 cm × 60 cm has increase on cob weight with husk, cob weight without husk, number of cobs per plant and grain yield per plant compared with plant spacing of 60 cm × 30 cm. The plant spacing treatment of 60 cm × 60 cm can improve quality of yield per crop but have not been able to increase the quantity of hybrid corn yield.