International Journal of Agricultural Sciences

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Effect of Optical Sensor Based Nitrogen Management on N, P and K Content and Uptake by Irrigated Wheat (Triticum aestivum L.)


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1 Department of Agronomy, C.C.S. Haryana Agricultural University, Hisar (Haryana), India
     

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A field experiment was conducted at CCSHAU, Hisar to study the effect of optical sensor based N management on N, P and K content of grain and straw as well as N, P and K uptake by grain and straw by wheat crop during rabi season of 2013-14. N content in grain was more in treatments having N application at 3rd irrigation as compared to N application at 2nd irrigation. Total N, P and K uptake as well as N, P and K uptake separately by grain and straw, generally increased at increasing the level of fixed rate N application, when equivalent treatments (i.e. treatments having same time of GreenSeeker (GS) guided N application) were compared. Significantly higher N uptake by grain in two stage (i.e. at 2nd and 3rd irrigation stage) applied N using GS over 2nd irrigation applied N indicated that 3rd irrigation applied N is important regarding the grain N uptake.

Keywords

Wheat, Nutrient Content, Plant Nutrient Uptake, Optical Sensor (GreenSeeker).
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  • Effect of Optical Sensor Based Nitrogen Management on N, P and K Content and Uptake by Irrigated Wheat (Triticum aestivum L.)

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Authors

Rekha Ratanoo
Department of Agronomy, C.C.S. Haryana Agricultural University, Hisar (Haryana), India

Abstract


A field experiment was conducted at CCSHAU, Hisar to study the effect of optical sensor based N management on N, P and K content of grain and straw as well as N, P and K uptake by grain and straw by wheat crop during rabi season of 2013-14. N content in grain was more in treatments having N application at 3rd irrigation as compared to N application at 2nd irrigation. Total N, P and K uptake as well as N, P and K uptake separately by grain and straw, generally increased at increasing the level of fixed rate N application, when equivalent treatments (i.e. treatments having same time of GreenSeeker (GS) guided N application) were compared. Significantly higher N uptake by grain in two stage (i.e. at 2nd and 3rd irrigation stage) applied N using GS over 2nd irrigation applied N indicated that 3rd irrigation applied N is important regarding the grain N uptake.

Keywords


Wheat, Nutrient Content, Plant Nutrient Uptake, Optical Sensor (GreenSeeker).

References