Comparison of Variable Rate to Single Rate Nitrogen Fertilizer Application: Corn Production and Residual Soil NO3 -N

2015 ◽  
pp. 427-441 ◽  
Author(s):  
N. R. Kitchen ◽  
D. F. Hughes ◽  
K. A. Sudduth ◽  
S. J. Birrell
Keyword(s):  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Residual Soil ◽  
Variable Rate ◽  
Corn Production

Economic Optimum Nitrogen Fertilizer Rate and Residual Soil Nitrate as Influenced by Soil Texture in Corn Production

2018 ◽  
Vol 110 (6) ◽  
pp. 2233-2242 ◽  
Author(s):  
Khaled D. Alotaibi ◽  
Athyna N. Cambouris ◽  
Mervin St. Luce ◽  
Noura Ziadi ◽  
Nicolas Tremblay
Keyword(s):  
Soil Texture ◽  
Nitrogen Fertilizer ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Fertilizer Rate ◽  
Corn Production ◽  
Nitrogen Fertilizer Rate

The response of flue-cured tobacco cultivar K326 to nitrogen fertilizer rate in China

2020 ◽  
Vol 158 (5) ◽  
pp. 371-382
Author(s):  
Yanjie Chen ◽  
Ke Ren ◽  
Xian He ◽  
Yi Chen ◽  
Binbin Hu ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Dry Weight ◽  
Fertilizer Application ◽  
Economic Benefits ◽  
Quadratic Model ◽  
Residual Soil ◽  
Fertilizer Rate ◽  
The Sustainable Development ◽  
Tobacco Production ◽  
Nitrogen Fertilizer Rate

AbstractNitrogen is an important element for the growth of flue-cured tobacco and is closely related to its yield and quality. In order to pursue higher economic benefits, excessive fertilizer is generally applied in flue-cured tobacco production, which is unfavourable for the sustainable development of flue-cured tobacco production and for the environment. In 2016 and 2017, experiments using different nitrogen fertilizer application rates in flue-cure tobacco were conducted in Yunnan province, and the changes in agronomic, economic and chemical indices as well as in residual soil nitrogen were compared. Linear and quadratic models were used to compare the response of tobacco to nitrogen fertilizer. With increasing nitrogen fertilizer rate, the proportions of superior to medium tobacco and the average price of flue-cured tobacco leaves initially increased and then decreased, while fresh weight, dry weight and the proportion of inferior tobacco showed the opposite trend. Total sugar and reducing sugar contents decreased with increasing nitrogen fertilizer rates, while total nitrogen and nicotine contents increased. Sensory evaluation scores had the highest value when 90 kg N/ha and 120 kg N/ha were applied. Soil nitrate contents increased as nitrogen fertilizer rate increased. The quadratic model was suitable for the response of cultivar K326 to nitrogen and 90 kg N/ha could meet the needs of cultivar K326.

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.

Reduction of nitrogen fertilizer application under different crop rotation systems in paddy fields of Taihu Area

2011 ◽  
Vol 19 (1) ◽  
pp. 24-31 ◽  
Author(s):  
Jun QIAO ◽  
Ting-Mei YAN ◽  
Feng XUE ◽  
Lin-Zhang YANG ◽  
Ping LU
Keyword(s):  
Crop Rotation ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Paddy Fields

On-the-go variable rate fertilizer application on vineyard using a proximal spectral sensor

2020 ◽  
Author(s):  
Marco Sozzi ◽  
Enrico Bernardi ◽  
Ahmed Kayad ◽  
Francesco Marinello ◽  
Davide Boscaro ◽  
...  
Keyword(s):  
Fertilizer Application ◽  
Variable Rate
Sign in / Sign up

Export Citation Format

Share Document