The Effect of Different Irrigation Water Levels on Grain Yield, Yield Components and Some Quality Parameters of Silage Maize (<i>Zea mays indentata </i>Sturt.)

Abstract

This research was conducted in Bursa, Marmara region, Turkey, in order to determine grain yield and some morphological traits which affect the silage maize response to different irrigation water amounts. The grains' percentage of crude oil and of crude protein were determined. Field experiments were planned following randomized complete block design with three replications and included six irrigation treatments. Irrigation treatments were created as water levels of pan evaporation (Epan) applied via drip irrigation [1.25 × Epan (I125), 1.00 × Epan (I100), 0.75 × Epan (I75), 0.50 × Epan (I50), 0.25 × Epan (I25) and 0 × Epan (I0)]. The highest value of grain yield was found to be 18,268 kg ha -1 in the I125 treatment, which represents excessive water. A quadratic relationship between grain yield and irrigation water applied was obtained. Deficit irrigation decreased grain yield and yield components except the percentage of crude oil and crude protein of grain, but improved the efficient use of irrigation water. Relationships between the grain yield and each yield component were positively significant. The highest correlation coefficient in the research gave the relationship between grain yield and plant height (r=0.957 ** ). The results revealed that 1.25 × Epan and 1.00 × Epan treatments are preferable for higher yield. The results of this study also suggest that if water is limited, the application of 0.75 × Epan can be recommended as optimal treatment, because the best compromise among yield, yield components, quality and irrigation water use efficiency for maize was achieved with this application.

Yield response, water productivity, and seasonal water production functions for maize under deficit irrigation water management in southern Taiwan

“…The average ear length and diameter ranged from 14.83 to 18.27 cm and 3.93 to 4.68 cm, respectively, over the two cropping seasons. These results are similar to those reported in some studies (Aydinsakir et al, 2013;Karasu et al, 2015;Moosavi, 2012), while others have reported that irrigation water amount does not significantly affect these parameters (Elzubeir & Mohamed, 2011;Yazar et al, 2009). According to Moosavi (2012), maize ear diameter is closely associated with the assimilate produced by photosynthesis, which varies markedly with water stress.…”

“…This implies that in this study the soil moisture deficits during vegetative growth and development had only a small effect on internodes elongation, which supports the finding in some studies (Djaman et al, 2013;Elzubeir & Mohamed, 2011). In contrast, some studies reported that water stress significantly affected maize plant height where deficit irrigation typically resulted in shortened plants (Aydinsakir et al, 2013;Çakir, 2004;Karasu et al, 2015).…”

Evaluatıon of growth and yıeld traıts ın corn under ırrıgatıon regımes ın sub-tropical climate

“…In control treatment, (water stress) both varieties produced the minimum but statistically identical biological yields in this study. Results of present study are similar to the findings of Hanson et al (2007) and Karasu et al (2015) those who observed that deficit water in maize yield traits and biological yield. Dry matter yield of maize reduced severely with water deficit condition as reported by Karam et al (2003).…”

SUSTAINABLE MAIZE (Zea mays L.) PRODUCTION UNDER DROUGHT STRESS BY UNDERSTANDING ITS ADVERSE EFFECT, SURVIVAL MECHANISM AND DROUGHT TOLERANCE INDICES

“…However, the production capacity of maize is not adequate to meet the utilization demand. Therefore, to meet the increasing demands greater efforts should be taken under different environmental conditions (Karasu et al, 2015). Maize is a necessary crop which is using as food, fodder, fuel, as well as in the manufacture of industrial products.…”