Volume 59, Issue 327, March 2023

Effect of nitrogen fertilizer on the growth of hybrid sorghum sudan grass

Ali Hassan¹, MM Hussain¹, MA Ullah², M Nadeem¹, MA Shahzad¹, AA Khan¹, MJ Riaz¹, H Ahmad¹, F Ahmad¹, M Waqas¹, DA Afzal¹, A Anwar¹, A Qazmi¹

¹PMAS - University of Arid Agriculture, Rawalpindi, Pakistan
²Pakistan Agricultural Research Council, Islamabad, Pakistan

ABSTRACT

A pot experiment was conducted at Experimental area, Agronomy Department PMAS - University of Arid Agriculture Rawalpindi to see the effect of different levels of nitrogen fertilizer on the growth and physiological traits of Sorghum Sudan Grass during March, 2022. Completely randomized designed was applied along with three replications. Seeds of Sorghum Sudan grass were collected from NARC Islamabad. Nitrogen fertilizer was applied in pots on 30th March, 2022, according to the treatments. Nitrogen played a significant role in the growth and physiology of Sorghum Sudan Grass. Nitrogen @ 150kgha^-1 is the best among other four treatments and attained the highest plant heights in three times (21.355, 65.153 and 100.620 cm) respectively. However, results of nitrogen @ 200kgha^-1 are approximately statistically at par with NPK. Nitrogen @ 150kgha^-1 gained the highest position in two times data (0.7050 and 1.4250) respectively. Nitrogen @ 200kgha^-1 gained less value than nitrogen @ 150kgha^-1 might be excessive dose. Nitrogen nutrition played a key role in the enhancement of leaf area values; however, nitrogen @ 150 kgha^-1 nutrition had the top position (1.140 and 1.950) during two times respectively. Leaf area index data had statistically significant results but among the nutrition treatments nitrogen @ 150kgha^-1 nutrition is the best option attaining the highest values (91.475 and 152.550) respectively in two times. Nitrogen fertilizer at different levels had statistically significant effect on crop growth rate of sorghum plants; however, nitrogen @ 150kgha^-1 nutrition treatment attained the highest value (0.5333) which was statically at par @ 200 kgha^-1 nutrition treatment. Nitrogen @ 150 kgha^-1 nutrition treatment had the top position (4061.9) but other three doses of nitrogen values having minute difference with nitrogen @ 150kgha^-1 and higher than control. Four doses of nitrogen fertilizer produced more net assimilation rates than control and nitrogen @ 150kgha^-1 gained the highest value (45.653) which was statistically at par with nitrogen @ 200kgha^-1 (43.521). Nitrogen fertilizer is an inorganic fertilizer provides the nutrition to the plant fastly and provides better performance at nitrogen @ 150kgha^-1. Nitrogen @ 200kgha¹ showed better performance than control but less than nitrogen @ 150kgha^-1 therefore this finding improves the economics of the study.

Keywords: Forage Production, Economics of nutrition, Dry biomass and Physiological traits

Discovery, 2023, 59, e24d1024

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Published: March 2023