A low glycemic index fine rice variety RNR 15048 (Telangana Sona) suitable for both kharif and summer seasons was introduced in southern Odisha in 2019 kharif season. Its nitrogen and Phosphorus requirement was not worked out for kharif / rabi / summer seasons. An experiment was conducted during summer season of 2022 at M.S. Swaminathan School of agriculture (MSSSoA), Parlakhemundi, Odisha to study the effect of nitrogen and phosphorus levels on yield attributes and yield of low glycemic rice variety RNR 15048 in split plot design with four levels of nitrogen (0, 50, 100 and 150 kg/ha) in main plots and three levels of phosphorus (0, 30 and 60 kg/ha) in subplots replicated three times. The panicle number, number of spike lets per panicle, number of filled spike lets and 1000 grain weight, grain, straw and biological yield and NPK uptake in grain and straw increased significantly with increase in nitrogen levels from 0 to 50, 100 and 150 kg ha-1 and phosphorus level from 0 to 30 and 60 kg ha-1. For low glycemic index rice variety RNR 15048 during summer, application of 150 kg N and 60 kg P2O5 along with 50 kg K2O ha-1 found to give higher yield in southern Odisha.A low glycemic index fine rice variety RNR 15048 (Telangana Sona) suitable for both kharif and summer seasons was introduced in southern Odisha in 2019 kharif season. Its nitrogen and Phosphorus requirement was not worked out for kharif / rabi / summer seasons. An experiment was conducted during summer season of 2022 at M.S. Swaminathan School of agriculture (MSSSoA), Parlakhemundi, Odisha to study the effect of nitrogen and phosphorus levels on yield attributes and yield of low glycemic rice variety RNR 15048 in split plot design with four levels of nitrogen (0, 50, 100 and 150 kg/ha) in main plots and three levels of phosphorus (0, 30 and 60 kg/ha) in subplots replicated three times. The panicle number, number of spike lets per panicle, number of filled spike lets and 1000 grain weight, grain, straw and biological yield and NPK uptake in grain and straw increased significantly with increase in nitrogen levels from 0 to 50, 100 and 150 kg ha-1 and phosphorus level from 0 to 30 and 60 kg ha-1. For low glycemic index rice variety RNR 15048 during summer, application of 150 kg N and 60 kg P2O5 along with 50 kg K2O ha-1 found to give higher yield in southern Odisha.

Effect of Different Levels of Nitrogen and Phosphorus on Yield and Nutrient Uptake of Low Glycemic Index Rice Variety RNR 15048 during Summer Season

Background:&nbsp;Nitrogen plays a crucial role in growth cycling and development, thereby influencing the plant growth and productivity. Understanding the interactions between nitrogen uptake with different irrigation and nitrogen fertilizers could provide a valuable insight for optimizing tomato production. Hence, this study aimed to investigate the effect of nitrogen uptake on tomato production under different nitrogen fertilizer and irrigation regimes.

Methods:&nbsp;The field experiment was carried out during 2022-2023 in split plot design with two irrigation main plots treatments and five different nitrogen fertilizer subplot treatments. Irrigation treatments consisted of 0.6 and 0.8 IW/CPE ratio and the nitrogen fertilizer treatments comprised of conventional urea, neem coated urea, ammonium sulfate, nano-urea and vermicompost.

Result: A higher nitrogen uptake was observed in the treatment combination of 0.6 and 0.8 IW/CPE ratio with vermicompost and nano-urea fertilizer applied treatments. Additionally, optimal irrigation conditions positively influenced nitrogen uptake and subsequent tomato fruit yield. This finding emphasizes the importance of considering nitrogen uptake when determining nitrogen fertilizer rates and irrigation management strategies for tomato production.

Effect of Irrigation Regimes and Nitrogenous Fertilization on Nitrogen Uptake in Tomato

<div>Background: Indian economy is largely based on agriculture. Major share of agricultural investments goes into chemical fertilizers. Nitrogen (N) fertilizers are used in fields to enhance the crop yield. Most of the reports are based on growth related data, morphological and yield related data but very few reports reveal the facts about genotoxic and cytotoxic effects of these fertilizers. Therefore, the present communication is an attempt in the aforesaid direction. 
 
Methods: In a pot experiment, mineral N content of soil in the form of ammonium-N (NH4+-N) and nitrate-N (NO3--N) were analysed at regular interval of 5 days till 30 days after treatment (DAT). On the corresponding days root tip assay was done for cytotoxic analyses and also the temporal changes in NH4+-N and NO3--N contents were observed. 
 
Result: In the Ammonium nitrate treatments, higher mitotic index (MI%) percentages were obtained. While for the Urea, NH4+-N content and MI were found to have a positive correlation. Also, it was found that there is an optimum ratio of NH4+-N and NO3--N in each treatment at which the MI% was the maximum. The study gives an interesting insight for the possible cytotoxic effects of the N fertilizers.</div>

Temporal Monitoring and Assessment of Inorganic Nitrogen Content of Soil due to Nitrogen Fertilizers and their Related Cytotoxic Effects

<div>An experiment was carried out to evaluate the effect of seed priming with magnesium nitrate salt against the moisture stress condition induced by Polyethylene glycol-6000 on seed germination, vigour index and tolerance index in root and shoot. Polyethylene glycol-6000 was used to create short term moisture stress under laboratory conditions while the seed priming was carried out by using magnesium nitrate. The percent germination, seed vigour index and tolerance index were started to decline from T1 to T4 (i.e. set first 1.5 and 4.5 % of PEG-6000 solution + none primed seed) while the results of second set (i.e. PEG-6000 + primed seed from T5 to T8) were also following the same decreasing trend along with improvement in every parameters. The germination was recorded highest 100 percent in T5 (i.e. 1.5% PEG-6000+ primed seed) followed by T6, T1 and T7 (T6 and T7 is 2.5% and 3.5 % PEG-6000+ primed seed) while the control set recorded 98.7% at final date of observations i.e. 240 Hrs. vigour index and tolerance index was also decreasing in both the set of treatments but PEG-600 + primed seed showed better results as compared to the treatments PEG-6000 + none primed. Tolerance index percent was recorded maximum in root as compare to shoot at 120 hrs. of intervals while the reverse result was recorded at 240 hrs. of intervals.</div>

<div>Ameliorative Effect of Seed Priming on Germination, Vigour Index and Tolerance Index against Short Term Moisture Stress in Maize (Zea mays L.)</div>

<div>Background: Poor soil fertility management in Ghana has necessitated the need to investigate the appropriate source of nitrogen which enhances nitrogen use efficiency and improves maize productivity under rainfed condition.&nbsp; 
 
Methods: The experiment consisted of five treatments; control (no fertilizer), NPK 15-15-15 (90 kg N ha-1), urea (90 kg N ha-1), poultry manure (4.2 tons ha-1) and combination of NPK 15-15-15 and poultry manure (&frac12;NPK 15-15-15 + &frac12; poultry manure). Randomized complete block design was the experimental design used for the experiment with three replications.&nbsp; 
 
Result: The greatest grain yield (5,551 kg ha-1) and biomass yield (14,296 kg ha-1) for the major rainy season were recorded by the combined application of NPK 15-15-15 and Poultry manure treatment, while the highest grain yield (3,507 kg ha-1) and biomass yield (7,976 kg ha-1) was recorded by NPK 15-15-15 treatment during the minor rainy season.</div>

Yield and Nitrogen Use Efficiency of Maize (Zea mays L.) Following the Application of Various Nitrogen Sources under Rainfed Conditions in the Bono Region of Ghana

Background: Adequate and balanced use of plant nutrients could increase crop performance and reduce adverse environmental effects. Farmers in Berekum have little information on the specific rate of nutrient, especially nitrogen application for hybrid and open pollinated maize varieties. 
 
Methods: A field experiment was carried out in Berekum Municipality of Ghana to determine the effects of different doses of N fertilizer (0, 90, 120 and 150 kg N ha-1) on growth and nitrogen use efficiency (NUE) of Pannar 12 (hybrid) and Omankwa (open-pollinated) maize varieties. The experiment was conducted in a factorial randomized block design and replicated thrice. 
 
Result: Experimental results revealed that incremental doses of nitrogen significantly impacted vegetative growth and NUE of maize. The studies indicated that the growth response in terms of plant height, number of leaves per plant and stem diameter of Omankwa was better than that of Pannar 12. It was found that in the main cropping period of 2019, the maximum NUE of 14.58 kg/kg was gained when Pannar 12 was grown with 150 kg N ha-1, while the highest NUE (15.91 kg/kg) was recorded when Omankwa was grown with 90 kg N ha-1. In the minor season of 2019, NUE was highest (13.54 kg/kg) when Pannar 12 was grown with 150 kg N ha-1, while application of 120 kg N ha-1&nbsp;to Omankwa resulted in the highest NUE (10.85 kg/kg). The studies indicated that application of nitrogen at 90, 120 and 150 kg N ha-1&nbsp;improved NUE in maize. However, NUE was optimized in Pannar 12 due to application of 150 kg N ha-1, while application of 90 kg N ha-1&nbsp;was enough to optimize NUE in Omankwa.

Effects of Different Doses of Nitrogen on Growth and Nitrogen Use Efficiency of Maize (Zea mays L.) in Berekum Municipality of Ghana

<div style="text-align: justify;">Soybean (Glycine max) is a leguminous crop grown worldwide for its dual qualities viz. high protein and oil content.&nbsp; It contains about 40-42% protein and 20-22% oil and is one of the major cash crop of rainy season.The plant growth parameters like plant height, leaf area index (LAI) and dry matter accumulation of soybean increased with application of nitrogen from 30-80 kg N ha-1. Nodule number and nodule dry weight increased with application of 40 kg N ha-1and decreased afterwards whereas, yield and yield attributes of soybean increased with the application of nitrogen upto 100 kg ha-1. Application of nitrogen from 40-80 kg N&nbsp; ha-1as basal dose resulted in increase in protein content. The split application of nitrogen as basal and at reproductive stages also resulted in increase in protein content. However, oil content decreased with increasing level of nitrogen. The oil content increased with application of nitrogen upto 40 kg N ha-1. Application of nitrogen also improved soil properties like organic carbon, available NPK and saturated hydraulic conductivity.</div>

Nitrogen management in Soybean: A Review

<div>Background: Stevia is a natural sweetener plant with zero calorie content which is used as an alternative source of sugar. Stevioside extract from stevia is considered to be 300-350 times sweeter than sugar. It is safe for use by both diabetics and hypo glycaemics due to its low glycaemic index. Stevia has some bitter aftertaste along with sweetness due to the presence of some essential oils, tannins and flavonoids. 
 
Methods: Field experiment was conducted at Eastern Block of Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, Prayagraj during Zaid 2018. The experiment was carried out in randomized complete block design comprising of three N levels i.e. 50, 75 and 100 kg N/ha and inter row spacing of 30, 40 and 50 cm with 20 cm of plant to plant spacing. The study was carried out to find out response of nitrogen levels and spacing on stevia. 
 
Result: Maximum plant height (51.24 cm), leaf area (4596.99 cm2) was observed with treatment 100 kg N ha-1 at 50 cm x 20 cm spacing and leaf area index (7.30), total soluble solids (TSS) (18.73 oBrix) was noticed with treatment 100 kg N ha-1 at 30 cm x 20 cm spacing, whereas the maximum Leaf number (342.52) was recorded with treatment 100 kg N ha-1 at 40 cm x 20 cm spacing. The results of this experiment revealed that increased dose of nitrogen with narrow spacing gave maximum quality.</div>

<div>TSS, Yield and Energetics of Stevia as Influenced by Nitrogen Levels and Spacing under Eastern U.P. Conditions</div>

<div>Background:&nbsp;Clusterbean (Cyamopsis tetragonoloba&nbsp;L.) is important commercial crop which belongs to family Leguminosae and has capacity to fix the atmospheric nitrogen. The nitrogen fixed by the legume crop is not enough to meet the demand of short duration crop like clusterbean. Besides, the experimental site falls under arid region where drought stress and poor distribution of rain during the crop growing cycle is common which affects the crop growth and productivity. Drawing on these insights, the study was planned to assess the performance of cluster bean with objectives to quantify water balance and to calculate suitable levels of irrigation and nitrogen. 
 
Methods:&nbsp;The experiment was conducted at research farm, Agricultural research sub-station, Hanumangarh, Swami Keshwanand Rajasthan Agricultural University, Bikaner during Kharif, 2016. Cluster bean variety RGC-1055 with seed rate of 16 kg ha-1 was planted with 3 levels of irrigation (100, 200 and 300 mm) and 4 levels of nitrogen (0, 20, 40 and 60 kg ha-1) and analyzed in split plot design with three replications.&nbsp; 
 
Result:&nbsp;Results showed by that the irrigation and nitrogen application rates significantly influenced the growth parameters, yield, nitrogen content and uptake by cluster bean. Irrigation level 200 mm significantly increased leaf area index at 60 DAS (2.62), dry matter accumulation (DMA) at 60 DAS and harvest (16.51 and 42.62 g plant-1), crop growth rate at 30-60 DAS and at harvest (0.36 and 0.62 g m-2 day-1), relative growth rate at 60- at harvest (1.59 g g-1 day-1), grain yield (1624 kg ha-1), straw yield (3645 kg ha-1) and biological yield (5270 kg ha-1) over irrigation level 100 mm, but statistically at par with irrigation level 300 mm. However, leaf area index at harvest (1.24) was highest at 300 mm irrigation level. Nitrogen level at 40 kg ha-1&nbsp;significantly increased leaf area index at 30, 60 DAS and at harvest (0.19, 2.65 and 1.16), dry matter accumulation at 60 DAS and at harvest (19.62 and 49.58 g plant-1), crop growth rate at 30-60 DAS and 60- harvest (0.46 and 0.71 g m-2 day-1), relative growth rate at 30-60 DAS and 60-harvest (1.26 and 1.66 g g-1 day-1), grain yield (1668 kg ha-1), straw yield (3696 kg ha-1) and biological yield (5364 kg ha-1) over control. The highest nitrogen content and uptake in grain and straw was obtained with irrigation level at 300 mm and nitrogen level @ 60 kg ha-1.</div>

Performance of Cluster Bean (Cyamopsis tetragonoloba) under Varying Levels of Irrigation and Nitrogen

Background: Under the present context of global warming and climate change, the choice of an ecologically hardy crop is having prime importance. Nutrient management is an important approach for improving crop growth and productivity. Among all the nutrients, nitrogen helps in the overall growth of the plant. Nitrogen helps to synthesize chlorophyll and thereby supports building the protein units that enhance plant growth. As nitrogen is highly mobile, it is lost through different ways such as volatilization, leaching, nitrification, etc. Split application of nitrogen through proper scheduling is an important approach to reduce nitrogen loss as well as to improve nitrogen use efficiency. Hence, the investigation was conducted to find out how the scheduling of nitrogen is affecting pearl millet growth and productivity. 
 
Methods: The present study was conducted in kharif season of 2022 on pearl millet at Post Graduate Experimental Farm, M. S. Swaminathan School of Agriculture. The experiment was carried out in randomized complete block design with 3 replications and 9 treatments, namely, T1: control, T2: 50% basal RDN, T3: 100% basal RDN, T4: 50% basal RDN + 50% at 30 DAS, T5: 50% basal RDN + 25% at 30 DAS and 45 DAS, T6: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index &lt; 95%, T7: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index &lt; 90%, T8: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index &lt; 85%, T9: 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index &lt; 80%. 
 
Result: The results showed that the application of 50% nitrogen as basal + topdressing @10 kg nitrogen/ha at sufficiency index &lt; 95% gave the maximum growth, yield, and income was also significantly higher with this application. So, it could be recommended to the farmers for growing pearl millet during kharif season in southern Odisha to achieve higher growth and productivity.