Effect of Nitrogen Fertiliser Application on Maize Yield Across Agro-Ecological Regions and Soil Types in Zimbabwe: A Meta-analysis Approach

Grain Yield and Nitrogen Use Efficiency Vary with Cereal Crop Type and Nitrogen Fertilizer Rate in Ethiopia: A Meta-Analysis

“…Abera et al [2] reported that maize crop fertilized with half (55 kg•ha −1 ) and full recommended (110 kg•ha −1 ) of N-fertilizer in Ethiopia has a grain yield advantage of 18% to 209% and 18% to 254% over the control, respectively. Also, a meta-analysis study conducted in Zimbabwe revealed a positive and significant yield response of 33.7% under N-application over the control [33].…”

“…In the present meta-analysis study, N-application significantly increased grain yield in maize, teff, wheat, barley and sorghum by 64.8% overall (Figure 3 and Figure 4). The increase of crop yield under N application is due to the critical importance of nitrogen fertilizer as a macronutrient in the agricultural production system and its potential to augment the low nitrogen levels in soil [33]. It is also related to the high importance of N fertilizer in enhancing plant leaf area, and photosynthesis efficiency; which resultantly enhance harvest index, plant dry matter, and crop yield [2] [22].…”

Sorghum (Sorghum bicolor L.) yield response to rainwater harvesting practices in the semi-arid farming environments of Zimbabwe: A meta-analysis

“…The reciprocal of the calculated variance was used to weight individual research (Eqs. (IV) and (V)) (Gotosa et al, 2019;Rusinamhodzi et al, 2011).…”

“…Long-term mean annual precipitation, N fertilizer, and soil texture were used as covariate factors (Gotosa et al, 2019;Rusinamhodzi et al, 2011) for the response of sorghum grain yield to rainwater harvesting practice. Seasonal rainfall was categorized into three classes based on Rusinamhodzi et al (2011) namely low (<600 mm) and medium (600-1000 mm).…”

Predicting Kernel Growth of Maize under Controlled Water and Nitrogen Applications

“…Among the cereal crops, maize (Zea mays L.) yield is difficult to predict as it can vary widely in response to water and N availability (Raziel et al 2015;Albarenque et al 2016;Abbas et al 2020). The development of N fertilizer and water application strategies for maize cultivation are the priority of researchers for farmers to give them well-recognized and more efficient management practices (Cassman et al 2002;Gehl et al 2005;Shanahan et al 2008;Gotosa et al 2019). The optimum quantity of N and water that must be applied to avoid a yield penalty is safe for farmers' expenses and soil environment.…”