Establishing a Mixed Pasture under Maize in Malawi. I. Time of Sowing

1975 ◽  
Vol 11 (4) ◽  
pp. 257-263 ◽  
Author(s):  
D. Thomas ◽  
A. J. Bennett
Keyword(s):  
Maize Yield ◽  
Nitrogen Application ◽  
Rhodes Grass

SUMMARYThe results are reported of an experiment on the Lilongwe Plain to investigate the effects of under-sowing maize with a mixture of Rhodes grass and silverleaf desmodium. Undersowing caused no significant reduction in any component of maize yield, and mixed swards with a good legume content were established. Nitrogen application had no significant effect on yields of grain or pasture, but in the following year undersown swards outyielded those directly seeded. Some practical advantages of undersowing are discussed.

Establishing a Mixed Pasture under Maize in Malawi. II. Method of Sowing

1975 ◽  
Vol 11 (4) ◽  
pp. 273-276 ◽  
Author(s):  
D. Thomas ◽  
A. J. Bennett
Keyword(s):  
Maize Yield ◽  
Nitrogen Application ◽  
Maize Production ◽  
Rhodes Grass ◽  
Applied Nitrogen

SUMMARYDifferent methods of undersowing maize with a mixture of Rhodes grass and silverleaf desmodium were compared, together with the effects of applied nitrogen, in an experiment on the Lilongwe Plain. Drilling the legume on the ridge or in the furrow was superior to broadcasting, and caused no substantial reductions in maize yield. Nitrogen application increased all aspects of maize production but slightly reduced legume yield. The data generally confirm previous findings that undersowing causes no appreciable and consistent reduction in maize yield, and results in the establishment of mixed swards with a high legume content.

scholarly journals Mitigating Striga hermonthica parasitism and damage in maize using soybean rotation, nitrogen application, and Striga-resistant varieties in the Nigerian savannas

2020 ◽  
Vol 56 (4) ◽  
pp. 620-632
Author(s):  
Alpha Y. Kamara ◽  
Abebe Menkir ◽  
David Chikoye ◽  
Abdullahi I. Tofa ◽  
Aminu A. Fagge ◽  
...  
Keyword(s):  
Integrated Management ◽  
Maize Yield ◽  
Striga Hermonthica ◽  
Nitrogen Application ◽  
N Application ◽  
Resistant Varieties ◽  
Moisture Deficit ◽  
Maize Varieties ◽  
Control Technologies ◽  
On Farm

AbstractStriga hermonthica infestation causes significant losses of maize yield in the Nigerian savannas and several technologies have been developed and promoted to control Striga in maize. However, since no single technology has been found to be effective against Striga, integrated management is needed to achieve satisfactory and sustainable Striga control. Both on-station and on-farm trials were undertaken from 2013 to 2015 in Bauchi and Kano States of Nigeria to evaluate the performance of integrated Striga control technologies. In the on-station trials, a soybean–maize rotation did not suppress Striga in maize in either location. However, nitrogen application suppressed and reduced Striga infection, except in Bauchi in 2014. The soybean–maize rotation accompanied by N application reduced Striga damage in both locations. On farmers’ fields, rotating soybean with maize significantly reduced Striga infection. At the same time, the use of maize varieties with a combined tolerance to drought and resistance to Striga parasitism also increased maize grain yield on farmers’ fields, probably due to three factors: a reduction in Striga infection, reduced effects of a mid-season moisture deficit, and increased uptake of nutrients from the soil. We concluded that the use of Striga-resistant maize varieties in combination with the application of N fertilizer and rotation with soybean could increase the productivity of maize in Striga-infested fields in the Nigerian savannas.

Maize yield and water balance is affected by nitrogen application in a film-mulching ridge–furrow system in a semiarid region of China

2014 ◽  
Vol 52 ◽  
pp. 103-111 ◽  
Author(s):  
Chang-An Liu ◽  
Li-Min Zhou ◽  
Ju-Jie Jia ◽  
Li-Jun Wang ◽  
Jian-Ting Si ◽  
...  
Keyword(s):  
Water Balance ◽  
Maize Yield ◽  
Semiarid Region ◽  
Nitrogen Application ◽  
Film Mulching

scholarly journals Estimation of maize yield and effects of variable-rate nitrogen application using UAV-based RGB imagery

2020 ◽  
Vol 189 ◽  
pp. 24-35 ◽  
Author(s):  
Meina Zhang ◽  
Jianfeng Zhou ◽  
Kenneth A. Sudduth ◽  
Newell R. Kitchen
Keyword(s):  
Maize Yield ◽  
Variable Rate ◽  
Nitrogen Application

scholarly journals Optimization of Nitrogen Fertilizer Application with Climate-Smart Agriculture in the North China Plain

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3415
Author(s):  
Jinsai Chen ◽  
Guangshuai Wang ◽  
Abdoul Kader Mounkaila Hamani ◽  
Abubakar Sunusi Amin ◽  
Weihao Sun ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilizer ◽  
Maize Yield ◽  
Application Rate ◽  
N2o Emissions ◽  
Nitrogen Application ◽  
Residual Concentration ◽  
Nitrogen Use ◽  
N Application ◽  
Use Efficiency

Long−term excessive nitrogen fertilizer input has resulted in several environmental problems, including an increase in N2O emissions and the aggravation of nitrate leaching; monitoring nitrogen fertilizer is crucial for maize with high yield. This study aimed to optimize the amount of nitrogen applied to maize by Climate−Smart Agriculture (CSA) so as to continuously improve agricultural productivity and reduce or eliminate N2O emissions as much as possible. Field experiments with a completely randomized design were conducted to examine the effects of six nitrogen treatments (N application levels of 0, 120, 180, 240, 300, 360 kg·ha−1, respectively) on N2O emissions, residual concentration of nitrate and ammonium nitrogen, maize yield, and nitrogen utilization efficiency in 2018 and 2019. The results indicated that the residual concentration of nitrate nitrogen (NO3-−N) in the two seasons significantly increased; N2O emissions significantly increased, and the nitrogen fertilizer agronomic efficiency and partial productivity of maize fell dramatically as the nitrogen application rate increased. The maize grain yield rose when the N application amount was raised (N application amount <300 kg·ha−1) but decreased when the N application amount > 300 kg·ha−1. An increase in the nitrogen application rate can decrease nitrogen use efficiency, increase soil NO3-−N residual, and N2O emissions. Reasonable nitrogen application can increase maize yield and reduce N2O emissions and be conducive to improving nitrogen use efficiency. By considering summer maize yield, nitrogen use efficiency, and farmland ecological environment, 173.94~178.34 kg N kg·ha−1 could be utilized as the nitrogen threshold for summer maize in the North China Plain.

scholarly journals Nitrogen fertilizer management strategy for oil palm-maize intercropping system in the semi-deciduous forest zone of Ghana

2020 ◽  
Vol 55 (1) ◽  
pp. 75-86
Author(s):  
I. Danso ◽  
E. Larbi ◽  
E. Andoh-Menash ◽  
P. F. Ribeiro ◽  
I.K. Adjarko ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Oil Palm ◽  
Aboveground Biomass ◽  
Deciduous Forest ◽  
Maize Yield ◽  
Nitrogen Application ◽  
Forest Zone ◽  
Maize Varieties ◽  
Significant Difference ◽  
The Impact

  In an attempt to increase yield of maize in oil palm-maize intercropping system, farmers resort to indiscriminate cutting of fronds of palms leading to low yield of oil palm. This study evaluated the impact of different N fertilizer levels on maize varieties in oil palm-maize intercropping system. The economics of nitrogen application was also studied. The treatments were: T1-Sole oil palm, T2-Oil palm+‘Omankwa’, T3-Oil palm+‘Abelehi’ and T4-Oil palm+ ‘Obatanpa’. The crop associations were superimposed with nitrogen fertilizer levels as sub-treatments at N0- N0:P0:K0, N1-N60:P60:K60, and N2-N120:P60:K60 per ha. The experiment was a split plot design with 4 replications. There was no significant difference (p< 0.05) between maize varieties across seasons for both maize yield and aboveground biomass though ‘Omankwa’ was promising across seasons and more responsive to nitrogen application. Across the three maize varieties, N60P60K60 was significantly higher (p<0.05) by 40% and 17% for maize yield and aboveground biomass respectively as compared to N0:P0:K0. The study recommends N60P60P60 fertilizer level and further states that to improve fertilizer adoption, government should subsidize fertilizer cost for farmers to purchase. The outcome of cost benefit analysis revealed that return per cash invested favored cropping system with N60:P60:K60 and season with less water stress.

scholarly journals Effects of Supplement Irrigation and Nitrogen Application Levels on Soil Carbon–Nitrogen Content and Yield of One-Year Double Cropping Maize in Subtropical Region

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1180
Author(s):  
Gui-Yang Wang ◽  
Yu-Xin Hu ◽  
Yong-Xin Liu ◽  
Shakeel Ahmad ◽  
Xun-Bo Zhou
Keyword(s):  
Field Experiment ◽  
Nitrogen Content ◽  
Drip Irrigation ◽  
Maize Yield ◽  
Nitrogen Application ◽  
Subtropical Region ◽  
Double Cropping ◽  
Supplementary Irrigation ◽  
Grain Nitrogen ◽  
One Year

Inappropriate irrigation conditions and nitrogen application can negatively affect soil carbon–nitrogen content and yield of maize, as well as can lead to underground water pollution and soil degradation. A two year (2018, 2019) field experiment was carried out to determine the effect of irrigation and N, alone and in combination on maize grain yield, grain nitrogen content, soil inorganic N and MBC of one-year double cropping maize (Zea mays L.) in a subtropical region. Split plot design was adopted, with main plots consisting of two water regimes: drip irrigation (drip irrigation to keep soil water content no less than 70% of maximum field capacity) and rainfed (no irrigation during growing period). Split-plot treatments consisted of five nitrogen application levels, including 0 (N0), 150 (N150), 200 (N200), 250 (N250), and 300 kg/ha (N300). The results of two-year field experiment showed that soil irrigation nitrogen interaction had a significant influence on the all measured parameters. In detail, soil NH4+-N and NO3−-N content, total nitrogen (TN), soil organic carbon (SOC) and grain nitrogen contents under the combined treatment of N250 and supplementary irrigation were higher relative to other treatments. Compared with rainfed, maize yield, thousand grains weight (TGW) and harvest index increased by 22.0%, 7.7%, and 15.2% under supplemental irrigation. Yield and TGW N300 were 287 kg/ha and 3.1 g higher than those of N250, and yield and TGW of N250 were 59.4% and 23.1% higher than those of N0, respectively. The yield of spring maize was 24.0% significantly higher than that of autumn maize. Therefore, we suggested that 250 kg/ha nitrogen application fertilizer combined with supplementary irrigation can improve soil fertility and annual maize yield in subtropical one-year double cropping region.

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