Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands

2021 ◽  
Vol 119 (2) ◽  
pp. 247-258
Author(s):  
Vanessa Z. Longhini ◽  
Abmael S. Cardoso ◽  
Andressa S. Berça ◽  
Isabel N. O. Carvalho ◽  
Robert M. Boddey ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Warm Climate ◽  
Litter Deposition

Seasonal changes in the nitrogen content of three warm-climate pasture grasses

1964 ◽  
Vol 4 (15) ◽  
pp. 336 ◽  
Author(s):  
EF Henzell ◽  
DJ Oxenham
Keyword(s):  
Nitrogen Content ◽  
Nitrogen Fertilizer ◽  
Nitrogen Deficiency ◽  
Nitrogen Supply ◽  
High Rate ◽  
Warm Climate ◽  
Stage Of Development ◽  
Pasture Grasses ◽  
Chloris Gayana ◽  
Nitrogen Treatments

The nitrogen content of three pasture grasses was measured under irrigation at Samford, south-east Queensland, during the period February-September 1962. The grasses were Paspalum plicatulum, Sefaria sphacelata, and Chloris gayana. Two nitrogen treatments were used-nil, and a high rate. The high rate comprised frequent nitrogen fertilizer dressings in amounts chosen to match the shape of the plant growth curve. Addition of nitrogen fertilizer caused a marked increase in the nitrogen content of all parts of the plant and maintained a higher nitrogen content in mature grass samples. Flowering had relatively less effect on the nitrogen content of the grasses than nitrogen supply. Frost had very little effect on the nitrogen content of these grasses. It is suggested that warm-climate pasture grasses generally are subjected to a greater degree of nitrogen deficiency than their temperate counterparts, and that this accounts, at least in part, for their comparatively low nitrogen content. In the nil nitrogen treatment, Setaria sphacelata and Chloris gayana consistently exhibited a higher nitrogen content than Paspalum plicatulum. The differences were greatest in the leaf blades and least in the stems. The relative influences of nitrogen supply and stage of development on the nitrogen content of pasture grasses are discussed.

Nitrogen fertilizer value of cattle manure applied on soils originating from organic and conventional farming systems

Agronomie ◽  
2002 ◽  
Vol 22 (7-8) ◽  
pp. 789-800 ◽  
Author(s):  
Monika Langmeier ◽  
Emmanuel Frossard ◽  
Michael Kreuzer ◽  
Paul Mäder ◽  
David Dubois ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Farming Systems ◽  
Cattle Manure ◽  
Conventional Farming ◽  
Fertilizer Value ◽  
Organic And Conventional Farming

Effect of Nitrogen Fertilizer and Spraying with Iron Growth and Yield for Corn Zea mays L.

2015 ◽  
Vol 28 (2) ◽  
pp. 56-66
Author(s):  
Kifah A. J. Al-Dogachi ◽  
Kadim K. Al-Asady ◽  
Manal A. Askar
Keyword(s):  
Zea Mays ◽  
Nitrogen Fertilizer ◽  
Zea Mays L ◽  
Growth And Yield

NITROGEN CYCLES IN CROP ROTATIONS DIFFERING IN FERTILIZATION

2015 ◽  
Author(s):  
Saulius GUŽYS ◽  
Stefanija MISEVIČIENĖ
Keyword(s):  
Crop Rotation ◽  
Soil Nitrogen ◽  
Nitrogen Fertilizer ◽  
Nitrogen Balance ◽  
Mineral Soil ◽  
Crop Productivity ◽  
Drainage Water ◽  
Perennial Grasses ◽  
Crop Rotations ◽  
Cereal Crop

The use of nitrogen fertilizer is becoming a global problem; however continuous fertilization with nitrogen ensures large and constant harvests. An 8 year research (2006–2013) was conducted to evaluate the relationships between differently fertilized cultivated plant rotations. The research was conducted in Lipliunai (Lithuania) in the agroecosystem with nitrogen metabolism in fields with deeper carbonaceous soil, i.e. Endocalcari Endohypogleyic Cambisol (CMg-n-w-can). The research area covered three drained plots where crop rotation of differently fertilized cereals and perennial grasses was applied. Samples of soil, water and plants were investigated in the Chemical Analysis Laboratory of the Aleksandras Stulginskis University certified by the Environment Ministry of the Republic of Lithuania. The greatest productivity was found in a crop rotation with higher fertilization (N32-140). In crop rotation with lower fertilization (N24-90) productivity of cereals and perennial grasses (N0-80) was 11–35 % lower. The highest amount of mineral soil nitrogen was found in cereal crop rotation with higher fertilization. It was influenced by fertilization and crop productivity. The lowest Nmin and Ntotal concentrations in drainage water were found in grasses crop rotation. Crop rotations of differently fertilized cereals increased nitrogen concentration in drainage water. Nmin concentration in water depended on crop productivity, quantity of mineral soil nitrogen, fertilization, and nitrogen balance. The lowest nitrogen leaching was found in the crop rotation of grasses. Cereal crop rotation increased nitrogen leaching by 12–42 %. The usage of all crop rotations resulted in a negative nitrogen balance, which essentially depended on fertilization with nitrogen fertilizer.

Influence of a BactoFil microbiological preparation on the intensity of infection by Rhizoctonia solani and the effects on sugar beet yield and quality

2012 ◽  
pp. 102-109
Author(s):  
Suzana Kristek ◽  
Andrija Kristek ◽  
Dragana Kocevski ◽  
Antonija K. Jankovi ◽  
Dražen Juriši
Keyword(s):  
Sugar Beet ◽  
Rhizoctonia Solani ◽  
Nitrogen Fertilizer ◽  
Soil Analysis ◽  
Block Design ◽  
Sugar Content ◽  
Pathogenic Fungi ◽  
Fertilizer Application ◽  
Beet Root ◽  
Set Up

The experiment was set up on two types of the soil: Mollic Gleysols (FAO, 1998) and Eutric Cambisols where the presence of pathogenic fungi – sugar beet root decay agent – Rhizoctonia solani has been detected since 2005. In a two year study (2008, 2009), the experiment was set up by completely randomized block design in 4 repetitions and 16 different variants. Two beet varieties, Belinda, sensitive to pathogenic fungi R. solani, and Laetitia, tolerant to pathogenic fungi R. solani), were grown. The microbiological preparation BactoFil was applied in different amounts in autumn and spring. In addition, the nitrogen fertilizer application, based on the results of soil analysis, was varied. The following parameters were tested: amount of infected and decayed plants, root yield, sugar content, sugar in molasses and sugar yield. The best results were obtained by applying the microbiological preparation BactoFil, and by 30% reduced nitrogen fertilizer application. Preparation dosage and time of application depended on soil properties.

Effects of Split Application of Nitrogen Fertilizer on Yield, Quality and Nitro-gen Use Efficiency of Sweet Potato

2018 ◽  
Vol 44 (12) ◽  
pp. 1858 ◽  
Author(s):  
Jian-Gang AN ◽  
Fu JING ◽  
Yi DING ◽  
Yi XIAO ◽  
Hao-Hao SHANG ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Nitrogen Fertilizer ◽  
Split Application ◽  
Use Efficiency ◽  
Yield Quality
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