Effect of Split Application of Nitrogenon the Yield of Rice Crop

International Journal of Chemical Studies, 2020

A field experiments was conducted during kharif 2016 to study the effect of splits of nitrogen application on yield and uptake on irrigated rice crop at Agricultural Research Station, Bapatla. The experiment was conducted in randomized block design on sandy clay loam soil with six treatments replicated four times. The treatments consisted of control i.e no nitrogen application, 1/2N at maximum tillering stage+1/2 N at panicle panicle initiation stage, 1/2 N at basal+1/4 N at maximum tillering stage+1/4 N at panicle initiation stage, 1/3 N at basal+1/3 N at maximum tillering stage+1/3 N at panicle initiation stage, 1/4 N at basal+1/4 N at maximum tillering stage+1/4 N at panicle initiation stage + 1/4 N at heading stage, 1/3 N at basal+1/3 N at maximum tillering stage+1/3 N at panicle initiation stage + extra 1/3 N at heading stage. The results shown that significantly the highest grain yield (5525 kg/ha), straw yield (7750 kg/ha) and nitrogen uptake (113kg/ha in grain and 75.9 kg/ha...

Journal of Soil Science and Plant Nutrition, 2020

The major challenge in sustainable rice production is to achieve the goals of increasing crop productivity, profitability, and resource use efficiency. Production systems (PS) and nitrogen (N) management patterns are two key agronomic practices influencing crop performance, profitability, water use efficiency (WUE), and N use efficiency (NUE). So, this study was conducted to check the influence of split application of N on rice productivity, NUE and profitability under dry direct-seeded rice (DDSR) and transplanted rice (TPR) systems. A field study was conducted in the summer season of 2017 and 2018 to investigate the influence of two PS (dry direct-seeded rice = DDSR and transplanted rice = TPR) and six N management treatments (N 1 = control, N 2 = 50 kg N ha −1 as basal, N 3 = 100 kg N ha −1 as basal, N 4 = 150 kg N ha −1 as basal, N 5 = 100 kg N ha −1 in three splits and N 6 = 150 kg N ha −1 in three splits) on crop productivity, profitability, and resource use efficiency. Yield-related traits, spikelet sterility, WUE, and profitability aspects were significantly influenced by PS. All aspects of crop performance, kernel quality, N uptake, and NUE (except NUE on biomass basis = NUEB) were affected by N management pattern, while no significant interaction between PS and N management was observed for any aspect. On average, DDSR improved the productive tiller density (26%), biological yield (16%), WUE (14%), and NUEB (27%) as compared with TPR. Similarly, DDSR reduced the cost of production (31-43%), while maintaining statistically similar paddy yields and reducing total water inputs (5-17%) in comparison with TPR. Among N management pattern, 100 kg N ha −1 in three splits increased paddy yields (44%), and WUE (42%) as compared with the basal application of 100 kg N ha −1. Similarly, application of N at 100 kg ha −1 in three splits improved the total N uptake (42%), agronomic NUE (146%), apparent recovery efficiency (226%) while reducing the spikelet sterility (28%) as compared with the basal application of 100 kg N ha −1. The DDSR has the potential to maintain or increase yield, WUE, NUE, and economic returns. While, split application of N at 100 kg ha −1 either in DDSR or TPR not only increased the SPADchlorophyll value, WUE, NUE, and economic returns but also reduced the spikelet sterility.

Presently, 50 percent of the human population relies on synthetic nitrogen (N) fertilizer for food production. In agriculture of subsistence during pre-chemical era, biological N2 fixation (BNF) was the primary source of reactive N but, in recent decades chemical N fixation (synthetic N) has become more important in global agriculture. Today, synthetic N fertilizer introduces reactive N of over 100 Tg N year-1 into the global environment to increase food production. Although this has sustained the large human population in meeting dietary needs, a large agriculture area in the world still lacks available N to sustain the crop production. As regards of split N application the yield and yield contributing parameters were significantly influenced by split application of N. With increase in the number of splits application along with basal application found more effective for improving the production of direct seeded rice. This article gives broad idea about Nitrogen status globally and nitrogen management in direct seeded rice.

pjlss.edu.pk

In field experiment at Sheikhupra, Pakistan conducted during 2006, the effect of nitrogen in split application, full N (140 kg/ ha) during puddling, full N at 35 days after transplanting ( DAT), ½ N during puddling + ½ N at 35 DAT, ½ N during puddling + ¼ N at 20 DAT +1/4 N ...

International Journal of Environment and Climate Change

As the application of nitrogen fertilizers in agriculture is increasing day by day which is leading to environmental pollution and increasing the cost of cultivation, a field experiment was conducted at IIRR farm, Rajendranagar, Hyderabad during three consecutive seasons (Kharif-2020, Rabi-2021 and Kharif-2021) to study the effect of different nitrogen levels application on yield and yield attributes in rice. The experiment was laid out in split plot design with four nitrogen levels as main plots, fourteen varieties as sub plots and replicated thrice. Among the nitrogen treatments N150 recorded highest number of panicles, more panicle length and higher grain yield which is on par with N100. N0 recorded lowest number of panicles, less panicle length, lowest grain yield and harvest index. Among the varieties highest 1000 grain weight was noticed in Birupa while N-22 in Kharif-2020 and Kharif-2021 and, Nidhi in Rabi-2021 recorded the lowest value. Birupa showed least reduction in grain...

2000

Field studies were conducted to evaluate the effect of two planting methods i.e. transplanting and direct seeding and three levels of nitrogen i.e. 0, 50 and 100 kg N ha'! on growth and yield of rice (Basmati-385) during the year 1998, The experiment was laid out in a randomized complete block design with split plot arrangement having 4 replications and a net plot size of 2 x 3 m. Yield and yield components were significantly affected by different planting methods and nitrogen levels. Transplanting produced significantly higher paddy and total dry matter yield (2.77 t ha'! and 8.54 t ha") than with direct sowing method (2.30 t ha'! and 7.46 t ha'') but planting methods had no effect on harvest index. Among .nitrogen levels, 100 kg N ha'! resulted in maximum paddy and total biomass yield of 3.03 and 9.74 t ha", respectively.Transplanting produced significantly more number of productive tillers per hill, more number of spikelets per panicle than direct sowing but planting method had no effect on lOOO-grainweight. Among nitrogen levels 100 kg N ha'! resulted in maximum number of tillers per hill, spikelets per panicle and lOOO-grainweight than rest of the nitrogen levels.

Revista Brasileira de Ciência do Solo, 2012

Nitrogen is the most important nutrient for rice (Oryza sativa L) yields. This study aimed to evaluate the response of upland rice cultivars to N rate and application times in a randomized block design, in subdivided plots with four replications. The studied factors were five rice cultivars (BRS MG Curinga, BRS Monarca, BRS Pepita, BRS Primavera, and BRS Sertaneja), three application times (100 % at planting, 50 % at planting - 50 % at tillering and 100 % at tillering) and four N rates (0, 50, 100, and 150 kg ha-1). All cultivars responded to increased rates and different times of N application, especially BRS Primavera and BRS Sertaneja, which were the most productive when 50 % N rates were applied at sowing and 50 % at tillering. The response of cultivar BRS Monarca to N fertilization was best when 100 % of the fertilizer was applied at tillering.

Journal of Pharmacognosy and Phytochemistry, 2019

The investigation entitled "Effect of nitrogen management practices on productivity and nitrogen use efficiency in rice crop." was carried out under field conditions during kharif 2017 at the Research cum Instructional Farm, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G). The soil of the experimental field was vertisol. Rice variety "Rajeshwari 1" was used as a test crop. The experiment was laid out in randomized complete block design with seven treatments and three replications. The treatments comprised of T1 (

International Journal of Chemical Studies, 2020

An experiment were done to analyze the effect of different nitrogen levels on crop growth of various rice cultivars with different rice varieties. Six cultivars from rice (Naveen, Indira, Ratna, Surendra, Birupa and Daya) were evaluated in the kharif season 2017-2018. The experiment were conducted in factorial randomized block design with three replications. Among the cultivars of rice, the effect of nitrogen levels on crop growth rate found to be proportional till the vegetative stage and then diminishing effect on crop growth rate is observed during reproductive stage. The highest CGR was observed in naveen and birupa and lowest in daya and surendra.

Archives of Agriculture and Environmental Science

An experiment on the effect of different nitrogen levels on yield and yield attributes of different rice varieties was conducted in Kanchanpur, Nepal, from March 2021 to July 2021. The experiment was laid in randomized complete block design with two factors: nitrogen levels and rice varieties, each factor having three levels (Nitrogen: 60kg/ha, 120kg/ha, and 180kg/ha and rice varieties: Hardinath 1, Hardianth 3 and Chaite 5) resulting in nine treatment combinations. Rice seeds were sown directly in experimental plots under the dry condition on March 24, 2021. The plant spacing was 20x20cm^2. Growth parameters, grain yield, and yield attributing traits of rice were recorded. The statistical results revealed significant differences between the treatments regarding agronomical parameters, yield attributing characters, and grain yield. The results indicated that the 180 kg/ha level of N application contributes to the higher plant height (74.502 cm), the number of tillers (1101.667), eff...