The effect of rate and time of nitrogen application on growth, yield attributes, yield and economics of summer maize (Zea mays L.)

Abstract

Background: Nitrogen management in maize production system is one of the main concerns since it is the most important and primary nutrient for growth and development of the crop. Optimum rate and time of N application can enhance yield and nutrient use efficiencies. The current study was aimed to evaluate optimum rate and time of nitrogen application in summer maize (Zea mays L.). Methods: A field experiment was conducted at College Farm, N. M. College of Agriculture, Navsari Agricultural University, Navsari to study the "Effect of rate and time of nitrogen application on growth and yield of summer maize (Zea mays L.)". The treatments of the study included three rates (60, 90 and 120 kg N ha -1 ) of nitrogen and three timings (two equal splits at sowing and 30 DAS, three equal splits at sowing, 30 and 45 DAS and four equal splits at sowing, 30, 45 and 60 DAS). Result: The results revealed significantly higher growth and yield parameters with 120 kg N ha -1 . The maximum grain yield (3463 kg ha -1 ) was obtained under 120 kg N ha -1 . The split application of nitrogen in four equal splits at sowing, 30, 45 and 60 DAS also had significant effect on growth and yield attributes of summer maize. Significantly highest grain yield (3331 kg ha -1 ) was obtained under four splits. The interaction between rate and time of nitrogen application had significant effect. The treatment combination involving 120 kg N ha -1 with four splits at sowing, 30, 45 and 60 DAS obtained significantly higher grain weight per cob (55.48 g) and grain yield (4084 kg ha -1 ). The treatment combination also accrued the maximum net realization (₹ 66680 ha -1 ) and B:C ratio (2.51).

Effect of nitrogen and seaweed extract (k-sap) on growth and yield of Zaid Maize

“…Maximum benefit cost ratio was recorded with application of nitrogen(150 kg/ha) might be due to, as a result of split application of nitrogen, which reduces nitrogen utilization and helps in order to improve the vegetative growth and increases the yield, which in turn produces the maximum benefit cost ratio. Similar results were obtained by Meena et al (2022) [11] . Further, increase in benefit cost ratio was recorded with the application of seaweed extract might be due to source of foliar organic fertilizer source that increased maize productivity and growth, adding to improved B:C ratio.…”

Cadmium accumulation and transfer in yellowish-brown and limestone soils of five potato varieties based on a pot experiment in the central Hanjiang River basin

“…The clay content in the soil was analyzed using a laser particle size analyzer (Malvern Panalytical Mastersizer 3000). Total nitrogen (N), available phosphorus (P), and potassium (K) were measured according to the Kjeldahl method (GB 7173-1987) (Madagoudra et al, 2021), combined extraction and colorimetry (NY/T 1848-2010) (Militaru et al, 2019), and combined extraction and colorimetry (NY/T 1849-2010) (Zhai et al, 2013), respectively.…”

Assessing the Impact of Combining Cotton Residue, Tillage and Nutrient Management on Rainfed Bt Cotton Growth in Marathwada Region of Maharashtra, India

“…The need of the hour is efficient resource use and conservation to address emerging agricultural issues" [4]. "Approaches like sustainable agriculture and conservation agriculture have gained prominence, not only for their ability to maintain high productivity but also for their role in preserving biodiversity and safeguarding the environment" [5]. "Sustainable agriculture practices focus on maintaining ecological balance, natural processes like nitrogen fixation, nutrient cycling, soil regeneration, and minimizing the use of inputs" [6].…”

“…This method is labour-intensive and increases the cost of subsequent crop cultivation. Alternatively, incorporating these cotton stalks into the soil can reduce labour costs and enrich the soil with valuable organic matter [14]. Recycling crop residues is a key strategy to enhance soil fertility and productivity.…”