Interaction of water and nitrogen on maize grown for silage

Gheysari, Mahdi; Mirlatifi, S M; Aval, Mohammad Bannayan; Homaee, Mehdi; Hoogenboom, Gerrit

doi:10.1016/j.agwat.2008.11.003

Cited by 111 publications

(64 citation statements)

References 33 publications

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“…The higher rates of urea-N fertilizer in the solitary and integrated applications resulted in higher DMA in the early stages. Gheysari et al (2009) found that application of 225 kg N ha -1 resulted in the highest aboveground biomass for silage in the arid and semi-arid areas under study. At the flowering stage (92 days after planting), DMA was higher in the split integrated treatments that provided a second portion of urea (top dressing application); the gradual release of cattle manure nutrients improved photosynthesis (Table 5) and plant growth, which continued until the end of sampling.…”

Section: Resultsmentioning

confidence: 99%

Organic and inorganic fertilizer effect on soil CO2 flux, microbial biomass, and growth of Nigella sativa L.

Salehi

Fallah

Sourki

2017

International Agrophysics

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A b s t r a c t. Cattle manure has a high carbon/nitrogen ratio and may not decompose; therefore, full-dose application of urea fertilizer might improve biological properties by increasing manure decomposition. This study aimed to investigate the effect of combining cattle manure and urea fertilizer on soil CO 2 flux, microbial biomass carbon, and dry matter accumulation during Nigella sativa L. (black cumin) growth under field conditions. The treatments were control, cattle manure, urea, different levels of split and full-dose integrated fertilizer. The results showed that integrated application of cattle manure and chemical fertilizer significantly increased microbial biomass carbon by 10%, soil organic carbon by 2.45%, total N by 3.27%, mineral N at the flowering stage by 7.57%, and CO 2 flux by 9% over solitary urea application. Integrated application increased microbial biomass carbon by 10% over the solitary application and the full-dose application by 5% over the split application. The soil properties and growth parameters of N. sativa L. benefited more from the fulldose application than the split application of urea. Cattle manure combined with chemical fertilizer and the full-dose application of urea increased fertilizer efficiency and improved biological soil parameters and plant growth. This method decreased the cost of top dressing urea fertilizer and proved beneficial for the environment and medicinal plant health.

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Section: Resultsmentioning

confidence: 99%

Organic and inorganic fertilizer effect on soil CO2 flux, microbial biomass, and growth of Nigella sativa L.

Salehi

Fallah

Sourki

2017

International Agrophysics

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“…K MC is the microclimate coefficient and was assumed to be 1.2 (Gheysari et al 2009). When P ET act reached to irrigation depth (D irrig ), it was the irrigation time for all irrigation levels.…”

Section: Pot Experimentsmentioning

confidence: 99%

Root and physiological characteristics associated with drought tolerance in Iranian tall fescue

2014

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Research on crop response to deficit irrigation is important to reduce agricultural water use in areas where water is a limited resource. The objective of this study was to evaluate changes in physiological and root traits under mild and intense drought stress in tall fescue. It also sought to find associations between these changes and field drought tolerance. A total of 24 tall fescue genotypes were selected from a wide polycross population and assessed for field drought tolerance during 2011-2012 in the field. The genotypes were classified as tolerant, moderately tolerant, and susceptible based on drought stress tolerance index (STI), tolerance index (TOL), and yield reduction (YR). In 2013, 24 genotypes were clonally propagated and planted in polyvinylchloride (PVC) tubes under, three levels of moisture regimes. Root characteristics were investigated at 0-30 and 30-60 cm depths of soil. Also 11 physiological traits, dry forage yield, STI, TOL, and YR were recorded. At the 30-60 cm depths of soil, the root length increased by 5.95 and 7.30 % under mild and intense stress, respectively. Under mild stress, root area and root volume were positively correlated with STI. Consequences of drought stress, manifested as declined relative water content and chlorophyll, could be associated with a decrease in the activity of antioxidant enzymes. Some tall fescue genotypes had extensive root systems, high photosynthetic capacity, and less YR in the field. These genotypes may adapt to drought through drought avoidance and drought tolerance mechanisms. The application of principle component analysis for screening suitable genotypes was also discussed.

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“…Management of irrigation water is crucial in order to improve corn productivity with reduced pollution risks [70] and can reduces yield loss if applied in an inappropriate way [71]. Direct evaporation of water from the soil surface is influenced by a number of factors.…”

Section: Plant Density Effect On Water Use Efficiencymentioning

confidence: 99%

Response of Maize Grown Under High Plant Density; Performance, Issues and Management - A Critical Review

Sher¹,

Khan²,

Cai³

et al. 2017

Adv Crop Sci Tech

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Modern cropping is based on relatively high plant density. The improved grain yield per unit area of modern maize (Zea mays L.) hybrids is due to the increased optimum plant population rather than the improved grain yield per plant. High plant density has been widely used to enhance grain yield in maize. Subsequently we review the effect of planting density on physiology, phenology, morphology, nitrogen use efficiency, water use efficiency grain yield information in maize crop. At higher plant populations reduced grain yield also results from the increased pollento-silking interval and the following barrenness. However, it may lead to higher risk lodging hence causing significant yield loss of the crop. Future insights are morphological and physiological basis controlling barren and stalk lodging resistance. How root traits, and anatomy of sheath and stem of maize plants correspond to high plant population and a further study on the physiological and biological basis of organ development that may govern the mechanisms of high plant density would be essential for future research.

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Interaction of water and nitrogen on maize grown for silage

Cited by 111 publications

References 33 publications

Organic and inorganic fertilizer effect on soil CO2 flux, microbial biomass, and growth of Nigella sativa L.

Organic and inorganic fertilizer effect on soil CO2 flux, microbial biomass, and growth of Nigella sativa L.

Root and physiological characteristics associated with drought tolerance in Iranian tall fescue

Response of Maize Grown Under High Plant Density; Performance, Issues and Management - A Critical Review

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