Effect of drip irrigation regimes on growth, yield and economics of maize (Zea mays) genotypes

Abstract

A field experiment was conducted during summer 2018 and 2019 to study the performance of maize (Zea mays L.) genotypes under drip and furrow irrigation regimes at the Main Agriculture Research Station, University of Agricultural Sciences, Dharwad, Karnataka. The experiment was laid out in strip plot design with 3 replications. Treatments included 4 irrigation levels (drip irrigation at 0.6 ETc, 0.8 ETc and 1.0 ETc and furrow irrigation at 0.8 IW/CPE ratio) and 4 maize genotypes. The data indicated that, furrow irrigation at 0.8 IW/CPE ratio and drip irrigation at 1.0 ETc recorded significantly higher and on par growth and yield parameters, grain yield (75.8 q/ha and 71.4 q/ha, respectively) and economic returns. Drip irrigation at 1.0 ETc consumed 28.6% less water but recorded significantly higher water productivity over furrow irrigation. Among the genotypes, NK-6240 found superior over rest of the genotypes. The combination of furrow irrigation with NK-6240 recorded significantly higher growth and yield attributes as well as grain yield and economics over rest of the combinations. However, this treatment remained statistically non-significant with drip irrigation at 1.0 ETc with NK-6240 and furrow irrigation with CP-818.

Resource Use Efficiency and Economics of Summer Greengram as Influenced by Land Configuration and Irrigation Regimes in North-western Part of India

“…This might be due the fact that, ineffective usage applied irrigation water due to losses of applied water through deep percolation and evaporation in higher irrigation regimes. These findings were in line with the results reported by Singh et al (2018), Gull et al (2019) and Sujatha et al (2023).…”

Effects of different management practices on the growth and yield of corn

“…According to Usoh et al (2017), corn irrigated by the drip method had a higher stem diameter compared to corn plants irrigated by the furrow method. Stem diameter in the best practices treatment of drip irrigation was larger than the other treatments mainly due to better soil moisture availability coupled with improved nutrient uptake, which has favored cell elongation and division, leading to higher corn growth (Sujatha et al, 2023). The larger the stem diameter of corn, the more assimilates are produced, resulting in greater plant biomass produced.…”

“…Yield is a result of crop growth. Higher growth might have resulted in higher photosynthate, carbon assimilation, and carbohydrate reserves in the plant, which helped in the development of a higher-weight reproductive organ (Sujatha et al, 2023). Corn responded significantly differently to drip and furrow irrigation treatment judging from its yield characteristics, including the weight of cob cornhusk per plant and kernel dry weight per plant (Table 2).…”

“…Drip irrigation resulted in higher yield, profit (9.87-19.52%), and revenue-cost ratio (6.47-21.74%) than furrow irrigation. According to Sujatha et al (2023), drip irrigation can be recommended to farmers over furrow irrigation, which could achieve 26.6% water savings over furrow irrigation.…”

“…Drip irrigation is a proven technology to reduce water conveying and application losses (Sujatha et al, 2023). In drip irrigation, water is supplied to the crop drop by drop at a very low rate from a small hose with outlets called emitters for drippers.…”