scholarly journals Parameters to Estimate the Nitrogen Effect of Biogenic Waste Composts

1996 ◽  
pp. 306-313
Author(s):  
Th. Ebertseder ◽  
R. Gutser ◽  
N. Claassen
2019 ◽  
Vol 33 (5) ◽  
pp. 295-299 ◽  
Author(s):  
Bong-Jin Kim ◽  
Hyung-Jun Kim ◽  
Sung Mok Jung ◽  
Tae-Sik Yoon ◽  
Yong-Sang Kim ◽  
...  

2017 ◽  
Vol 35 (1) ◽  
pp. 82-91
Author(s):  
Cesar Edwin García ◽  
David Montero ◽  
Hector Alberto Chica

The main objective of the research carried out in the sugar productive sector in Colombia is to improve crop productivity of sugarcane. The rise of RPAS, together with the use of multispectral cameras, which allows for high spatial resolution images and spectral information outside the visible spectrum, has generated an alternative nondestructive technological approach to monitoring crop sugarcane that must be evaluated and adapted to the specific conditions of Colombia's sugar productive sector. In this context, this paper assesses the potential of a modified camera (NIR) to discriminate three varieties of sugarcane, as well as three doses of fertilization and estimating the sugarcane yield at an early stage, for the three varieties through multiple vegetation indices. In this study, no significant differences were found by vegetation index between fertilization doses, and only significant differences between varieties were found when the fertilization was normal or high. Likewise, multiple regressions between scores derived from vegetation indices after applying PCA and productivity produced determinations of up to 56%.


2020 ◽  
Vol 04 (02) ◽  
pp. 157-164
Author(s):  
M. B. Akter ◽  
N. Nahar ◽  
M. S. Rana ◽  
M. N. Hasan ◽  
M. B. Rayhan

The experiment was conducted at the BINA sub-station, Rahmatpur, Barishal, during the period from April 2020 to August 2020 to investigate the effect of nitrogen on the yield of transplant Aus rice cv. Binadhan-19. The experiment comprised four levels of nitrogen viz (a) N0 (zero nitrogen), (b) N1 (90 kg N/ha), (c) N2 (110 kg N/ha) and (d) N3 (130 kg N/ha). Nitrogen fertilizer was applied at two splits. The experiment was laid out in a randomized complete block design with three replications. Results revealed that plant height, effective tiller, non-effective tiller, flag leaf length, filled gran, unfilled grain and 1000 grain weight were increased with increasing nitrogen doses till 110 kg N ha-1. Furthermore, the highest grain weight was recorded in 110 kg N ha-1 due to superior performance of yield contributing characters of BInadhan-19. A positive correlation was found between grain yield and total dry matter production. The experimental results concluded that 110 kg N ha-1 would be the best dose for higher gain yield in Binadhan-19 in aus season.


2004 ◽  
Vol 96 (3) ◽  
pp. 1 ◽  
Author(s):  
K. R. Sistani ◽  
D. E. Rowe ◽  
J. Johnson ◽  
H. Tewolde

2011 ◽  
Vol 50 (5) ◽  
pp. 051301 ◽  
Author(s):  
Lynda Saci ◽  
Ramdane Mahamdi ◽  
Farida Mansour ◽  
Jonathan Boucher ◽  
Maéva Collet ◽  
...  

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