Maize streak virus (MSV) contributes significantly to the problem of extremely low African maize yields. Whilst a diverse range of MSV and MSV-like viruses are endemic in sub-Saharan Africa and neighbouring islands, only a single group of maize-adapted variants - MSV subtypes A(1)-A(6) - causes severe enough disease in maize to influence yields substantially. In order to assist in designing eff...

Inbred maize (Zea mays L.) lines are grown for seed in Puerto Rico. In efforts to increase crop yields, some producers may apply nitrogen (N) fertilizer excess of nutrient requirements. The use cover crops (CC) rotation can serve as an alternative continuous cultivation maize. This experiment was conducted field plots Güamaní (fine-loamy over sandy or sandy-skeletal, mixed, superactive, isohype...

Drought and floods affect the growth yield of maize, affecting food security. Therefore, it is crucial to assess maize’s drought waterlogging status in various stages. We used phenological daily meteorological data spatial analysis identify conditions spring maize Northeast China eight calculated crop water surplus/deficit index national standard for waterlogging. The results indicate a signifi...

The United States is the largest producer of maize in the world. Maize-soybean is the most prominent crop rotation in the Midwestern United States. Glyphosate-resistant volunteer maize is a problem weed not only in soybean, but also in continuous maize or sugarbeet rotations. Storm damage, harvesting problems, poor stalk quality, and insect damage, among other factors, can lead to kernel and ea...

To quantitatively reveal the characteristics of spatial and temporal distribution influencing factors maize water requirement in Shaanxi Province, Penman-Monteith model path analysis were used to systematically analyze interannual variation at different growth stages three climatic zones Province. And relationship between meteorological based on daily data Province for past 60 years. The result...

Digestate, a by-product of biogas production, is widely recognized as promising renewable nitrogen (N) source with high potential to replace synthetic fertilizers. Yet, inefficient digestate use can lead pollutant N losses ammonia (NH3) volatilization, nitrous oxide (N2O) emissions and nitrate (NO3-) leaching. Cover crops may reduce some these recycle the back into soil after incorporation, but...

nickel (ni) is one of the essential micronutrients for higher plants and its known function is beingthe metal component of urease. the effects of various ni levels on urease activity in maize (zea maize l.)plants grown in two nutrient media containing urea or ammonium nitrate as two separate nitrogen sourceswere investigated. the experiments were performed as completely randomized blocks with t...

Despite the resurgence of parastatal marketing boards and strategic grain reserves over the last decade in eastern and southern Africa, there is little empirical evidence about how their activities affect smallholder input use and cropping decisions. This paper uses panel survey data from 1997-2007 on Kenyan smallholders to investigate the effect of Kenya’s National Cereal Produce Board activit...

Maize (Zea mays L.) is an important crop among Brazilian smallholder farmers,who are also responsible for 40% of the poultry and egg production in the country.Although poultry litter is considered a potential pollutant, if properly stabilized anddistributed in the field it can be used as a source of nitrogen for maize production.In this study, the response of maize to mineral fertilizer and pou...

Intercropping systems compared to monoculture systems can more efficiently use the existing resources which ultimately will lead to increased plant performance. Therefore, to evaluate the benefits of intercropping maize and beans and assess its impact on yield and yield’s component, an experiment was conducted in factorial design with randomized complete block design in three replication, in 20...