Nitrogen Effects on Yield, Quality and Physiological Characteristics of Giant Rice

In China, the quantity of nitrogen fertilizer applied is large, but as a consequence of a high level of loss, its utilization rate is low. Compared to common rice, the new giant rice has interesting characteristics, namely high biological yield and good efficient use of fertilizer. However, it becomes urgent to further consider the appropriate rate of nitrogen fertilizer to be applied. The giant rice varieties Feng5 and Feng6 were set up in a pot experiment and a field experiment under five doses of nitrogen fertilizers, namely, 0 kg·ha−1 (CK), 75 kg·ha−1 (T1), 150 kg·ha−1 (T2), 225 kg·ha−1 (T3) and 300 kg·ha−1 (T4). Parameters such as leaf area index (LAI), lodging index (LI), nitrogen utilization rate, photosynthesis rate and grain yield were measured. The results showed that with the increase of nitrogen dose in a certain range, LAI, plant height, the number of tillers, net photosynthetic rate (NPn), the transpiration rate (Tr), and the grain yield increased while the lodging index (LI), the nitrogen agronomic utilization rate (AE) and nitrogen partial productivity (PFPN) decreased. Additionally, with the increase of nitrogen application, the grain yield index (HI) and nitrogen contribution rate (FCRN) of rice presented a parabolic trend.

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Studies on Potential of Different Dates of Sowing and Varieties on Productivity of Aerobic Rice in Assam

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2020/v39i4831277 ◽

2020 ◽

pp. 557-565

Author(s):

Bidisha Borah ◽

Kalyan Pathak

Keyword(s):

Grain Yield ◽

Rice Variety ◽

Canopy Temperature ◽

Index Number ◽

Dry Matter Accumulation ◽

Rice Varieties ◽

Area Index ◽

Main Plot ◽

Positive Effect ◽

Plot Design

An investigation was carried out to determine an optimum micro-climate regimes for different promising varieties of rice for realizing higher yields under aerobic conditions. A field experiment was conducted in the Instructional Cum Research (ICR) Farm of Assam Agricultural University, Jorhat, Assam during autumn season of 2017. The experiment was laid out in a split-plot design with three replications. The treatments consisted of four micro-climatic regimes (M) in main plot viz., sowing of seed on 15th February (M1), 1st March (M2), 16th March (M3) and 1st April (M4) along with four different rice varieties (V) viz., CR-Dhan 205 (V1), CR-Dhan 203 (V2), CR-Dhan 204 (V3) and Inglongkiri (V4) in sub plot. The results of the experiment revealed that among the different micro-climatic regimes, the micro-climate associated with 1st April recorded positive effect on micro-climate related and yield parameters in terms of canopy temperature, light intensity, soil moister content, soil temperature, dry matter accumulation, leaf area index, number of effective tillers and grain yield (3004 kg/ha), followed by the micro-climate associated with 16th March sown crop. Among the varieties evaluated, CR-Dhan 203 recorded the highest value in terms of number of effective tillers (187/m2) followed by Inglongkiri, CR-Dhan 204 and CR-Dhan 205. The highest grain yield of 2860 kg/ha recorded in rice variety CR-Dhan 203 was significantly superior to that of other varieties except Inglongkiri. In terms of economics, the crop sown on 1st April recorded the highest net return (INR 51755 /ha) and B:C ratio (2.30) which was found to be the greatest.

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Effect of Nitrogen Fertilizer and Its Application Efficiency on Two Local Sorghum Cultivars Sorghum bicolor L. Moench

Journal of Agricultural Science ◽

10.5539/jas.v9n4p236 ◽

2017 ◽

Vol 9 (4) ◽

pp. 236

Author(s):

Abdulla A. Mohamed Muflahi ◽

Ahmed Saleh Basuaid

Keyword(s):

Grain Yield ◽

Sorghum Bicolor ◽

Nitrogen Fertilizer ◽

Agricultural Research ◽

Nitrogen Efficiency ◽

Nitrogen Fertilizers ◽

Research Station ◽

Nitrogen Application ◽

Four Levels ◽

Sorghum Bicolor L

A field experiment was carried out at El-Kod Agricultural Research Station, Abyan Delta, Abyan Governorate during the seasons 2014 and 2015 in soil sandy silt to assess four levels of nitrogen fertilizers (0, 55, 110 and 165 kg N/ha) utilizing urea fertilizer (46% N) on some crop characteristics and efficiency of nitrogen application on two local cultivars of sorghum (Sorghum bicolor L. Moench). Split plot design was applied in four replicates. Fertilizer levels were distributed in main plots whereas, the cultivars in subplots. The results revealed significant differences between cultivars Benny and Saif in all characteristics during the two seasons. Cultivar Benny was significantly superior to cultivar Saif in all crop characteristics, except the length of spike which was significantly superior in Saif cultivar compared to cultivar Benny in both seasons. The increase in nitrogen level led to significant increase in all parameters of crop growth under study in both seasons, where the highest dose of nitrogen (165 kg N/ha) gave highest grain yield (3013 and 3201 kg/ha) in both seasons respectively, while the efficiency of nitrogen utilization declined with increased level of nitrogen application and highest value in nitrogen efficiency (12.78 kg grain/kg N). The interaction between cultivars and nitrogen fertilizer showed significant differences in terms of all studied parameters during both seasons. The cultivar Benny responded to high level of nitrogen (165 kg N/ha) and gave high grain yield (3640 and 3305 kg/ha) in both seasons respectively. The results yielded significant effect for efficiency of nitrogen application on grain yield between the cultivars, the levels of fertilizers and their interaction in the first season whereas, no significant differences were detected in the second season.

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Effects of Planting Density and Basal Nitrogen Fertilizer on Grain Yield, Quality, Taste of Rice Cultivar in Aomori Prefecture

Japanese Journal of Crop Science ◽

10.1626/jcs.88.89 ◽

2019 ◽

Vol 88 (2) ◽

pp. 89-97

Author(s):

Toshiyuki Kimura ◽

Hiroyuki Shimono

Keyword(s):

Grain Yield ◽

Nitrogen Fertilizer ◽

Rice Cultivar ◽

Planting Density ◽

Yield Quality ◽

Aomori Prefecture

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Responses of Grain Yield and Nutrient Content to Combined Zinc and Nitrogen Fertilizer in Upland and Wetland Rice Varieties Grown in Waterlogged and Well-Drained Condition

Journal of soil science and plant nutrition ◽

10.1007/s42729-020-00279-x ◽

2020 ◽

Vol 20 (4) ◽

pp. 2112-2122

Author(s):

Supapohn Yamuangmorn ◽

Rarinthorn Rinsinjoy ◽

Sithisavet Lordkaew ◽

Bernard Dell ◽

Chanakan Prom-u-thai

Keyword(s):

Grain Yield ◽

Nitrogen Fertilizer ◽

Nutrient Content ◽

Wetland Rice ◽

Rice Varieties

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Response of transplanted aman rice varieties to split application of potassium

Research in Agriculture Livestock and Fisheries ◽

10.3329/ralf.v5i3.39577 ◽

2018 ◽

Vol 5 (3) ◽

pp. 313-320

Author(s):

Israt Jahan ◽

Sarder Md Altaf Hossain ◽

Md Anwarul Islam ◽

Joynulalam Talukder

Keyword(s):

Grain Yield ◽

Plant Height ◽

Harvest Index ◽

Experimental Plot ◽

Split Application ◽

Rice Varieties ◽

Straw Yield ◽

Plot Size ◽

Biological Yield ◽

Equal Split

The research was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, to investigate the effect of time of split application of potassium on the yield of three transplanted (T) aman rice varieties. Rice varieties were BRRI dhan39, BRRI dhan40 and BRRI dhan41. Potassium was applied at the rate of 80 kg K ha-1. Experimental plot size was 5m2 (2.5m ×2.0m). Four split application of potassium [K1= Control (No K application), K2= 40 g K plot-1 at 15 DAT (days after transplanting), K3= 20 g K plot-1 at15 DAT+20 g K plot-1 at 30DAT, K4= 10 g K plot-1 at 15 DAT+ 10 g K plot-1 at 25DAT+ 10 g K plot-1 at 30 DAT+ 10 g K plot-1 at 45 DAT] were considered as treatments. From the experiment it was found that split application of potassium had no significant effect on plant height, length of panicle, thousand grains weight. It was evident that two splits application of potassium i.e., 20 g K plot-1 at 15 DAT+20 g K plot-1 at 30 DAT with BRRI dhan41 gave maximum no. of tiller hill-1, effective tiller hill-1, grains panicle-1, grain yield and straw yield, biological yield and harvest index. But varieties differed among themselves in terms of yield contributing characters and yield, and BRRI dhan41 performed the best. Therefore, based on the findings of the present study, it may be concluded that for obtaining higher yield BRRI dhan 41 can be grown following application of potassium at the rate of 80 kg ha-1 in two equal split at 15 and 30 days after transplanting Res. Agric., Livest. Fish.5(3): 313-320, December 2018

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Effect of nitrogen fertilizer and weed management on the yield of transplant aman rice

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v16i1.36473 ◽

2018 ◽

Vol 16 (1) ◽

pp. 12-16

Author(s):

Jyoti Adhikari ◽

Abdur Rahman Sarkar ◽

Md Romij Uddin ◽

Uttam Kumer Sarker ◽

Kawsar Hossen ◽

...

Keyword(s):

Grain Yield ◽

Plant Height ◽

Nitrogen Fertilizer ◽

Weed Management ◽

Research Work ◽

Growth And Yield ◽

Control Treatment ◽

Panicle Length ◽

Straw Yield ◽

Biological Yield

The research work was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during aman season from July to December 2015 to study the effect of nitrogen fertilizer and weed management on the growth and yield of transplant aman rice cv. BRRI dhan46. The experiment consisted of four fertilizer treatments viz. 0 kg N ha−1 (N0), 40 kg N ha−1(N1), 80 kg N ha−1(N2) and 120 kg N ha−1(N3) and four weeding treatments viz. one hand weeding at 20 DAT (W1), two hand weedings at 20 and 35 DAT (W2), three hand weedings at 20, 35 and 50 DAT (W3), weeding by Japanese rice weeder twice at 20 and 35 DAT (W4) and unweeded control (W5). The experiment was laid out in the randomized complete block design with three replications. The highest plant height (113.00 cm), number of total tillers hill−1 (8.74), number of effective tillers hill−1 (6.18), panicle length (21.98 cm), number of grains panicle−1 (114.20), grain yield (4.00 t ha−1), straw yield (5.25 t ha−1) and biological yield (9.25 t ha−1) were recorded in N2 (80 kg N ha−1) treatment. The lowest plant height (106.00 cm), number of total tillers hill-1 (7.20), number of effective tillers hill−1 (5.00), panicle length (20.70 cm), number of grains panicle−1 (97.60), grain yield (3.52 t ha−1), straw yield (4.46 t ha−1) and biological yield (7.97 t ha−1) were recorded from N0 (No nitrogen fertilizer control) treatment. On the other hand, the highest grain yield 4.23 t ha−1 was observed in three weedings condition because of the highest number of effective tillers hill−1 (6.81), number of grains panicle−1(111.10). The highest straw yield (5.51 t ha−1) was also found in three weeding condition. The lowest grain yield (3.40 t ha−1) was recorded in W5 (unweeded control) treatment. The lowest straw yield (4.31 t ha−1) was also observed in W5 (unweeded control) treatment because of the smallest plant (106.97 cm) and lower number of total tillers hill−1 (7.20). Therefore, 80 kg N ha−1along with three hand weedings at 20, 35 and 50 DAT may be used for obtaining the highest grain and straw yields of BRRI dhan46J. Bangladesh Agril. Univ. 16(1): 12-16, April 2018

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Use of Nitrogen Fertilizer in a Targeted Way to Improve Grain Yield, Quality, and Nitrogen Use Efficiency

Agronomy Journal ◽

10.2134/agronj14.0363 ◽

2015 ◽

Vol 107 (3) ◽

pp. 903-915 ◽

Cited By ~ 16

Author(s):

Peter Hooper ◽

Yi Zhou ◽

David R. Coventry ◽

Glenn K. McDonald

Keyword(s):

Grain Yield ◽

Nitrogen Use Efficiency ◽

Nitrogen Fertilizer ◽

Nitrogen Use ◽

Use Efficiency ◽

Yield Quality

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Impact of Different Nitrogen Levels to the Grain Yield and Yield Components of Some Corn (Zea mays L.) Hybrids

Journal of Experimental Agriculture International ◽

10.9734/jeai/2021/v43i1130756 ◽

2021 ◽

pp. 48-60

Author(s):

Wisam Khald Sabri ◽

Abdullah Oktem

Keyword(s):

Grain Yield ◽

Leaf Area Index ◽

Nitrogen Fertilizer ◽

Kernel Weight ◽

Total Chlorophyll ◽

Area Index ◽

Nitrogen Levels ◽

Maize Genotypes ◽

Maize Varieties ◽

Single Cross

Aims: The study was designed to elucidate the effect of different nitrogen (N) fertilizer levels on five different maize cultivars. Study Design: A split plot experimental design in randomized complete blocks (RCBD) with three replicates. Arrangement of seven nitrogen levels and five single cross hybrids were compared. Main plots were nitrogen levels and subplots were varieties. Place and Duration of Study: College of Agricultural Engineering Sciences at the University of Duhok, Iraq. The study was undertaken fromMarch– August 2021. Methodology: At the present research, five single cross-hybrid corn varieties were used, which were: CADZ, DKC6050, DRACHMA, MYIMY and ZP6468D. Arrangement of seven nitrogen fertilizer levels were 0, 50, 100, 150, 200, 250 and 300 kg N ha−1. The following features were studied: plant height, leaf area index, thousand kernel weight, total grain yield, total chlorophyll, protein% and oil %.The collected data were projected to SAS software program for analysis. The significant differences between treatment means were calculated using Duncan’s multiple ranges. Results: It was reveal that there were significant effect of different nitrogen fertilizer levels, maize genotypes as well as the interaction of nitrogen and genotype of maize (P<.01) for plant height, leaf area index, 1000 kernel weight, total grain yield, total chlorophyll and protein %. However, There were no significant differences between different maize genotypes as well as different nitrogen fertilizer levels (P>.05) with oil %, but the interaction of nitrogen and genotype of maize was significant (P<.01). Conclusion: Increasing the amount of nitrogen had better effect on studied characteristics of different maize varieties, in which adding 300 kg nitrogen had optimum results. In considering the response of maize varieties to nitrogen, the best variety was DRACHMA genotype while the worst variety was CADZ genotype, however this hybrids was superior in some traits.

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Effect of sowing density on grain yield, protein and oil content and plant morphology of soybean (Glycine max L. Merrill)

Plant Soil and Environment ◽

10.17221/346/2019-pse ◽

2019 ◽

Vol 65 (No. 12) ◽

pp. 594-601 ◽

Cited By ~ 1

Author(s):

Olena Sobko ◽

Jens Hartung ◽

Sabine Zikeli ◽

Wilhelm Claupein ◽

Sabine Gruber

Keyword(s):

Grain Yield ◽

Block Design ◽

Plant Morphology ◽

Field Trials ◽

Area Index ◽

Yield And Quality ◽

Randomized Complete Block Design ◽

Glycine Max L ◽

Yield Quality ◽

Almost All

To find out exactly how sowing density and sowing pattern affect soybean grain yield, quality and its components in non-traditional soybean growing regions, such as Germany, two field trials have been conducted at two locations in Bavaria in 2016 and 2017. The experiments were carried out with four sowing densities (30, 50, 70, 90 seeds/m<sup>2</sup>) and four cultivars from different maturity groups (Viola 000, Lissabon 000, ES Mentor 00, Orion 00) as randomized complete block design with four replicates. Almost all evaluated traits varied significantly depending on year × location. There was no interaction between the main factors (cultivar × sowing density). The results revealed that grain yield and height of the first pod increased with increase of sowing density. The number of pods per plant and branching decreased with increasing sowing density. At higher sowing densities at flowering leaf area index was significantly higher than at lower sowing densities. The cv. ES Mentor (00) with 70 seeds/m<sup>2</sup> has proved to be a suitable cultivar in terms of yield and quality in southern Germany (> 3.6 t/ha grain yield and 40% protein).

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