Photosynthetic activity, yield, nutrient use efficiency and economics of rice (Oryza sativa L.) as influenced by foliar supplementation of urea phosphate

2020 ◽  
Vol 68 (4) ◽  
pp. 423-430
Author(s):  
M. Monica ◽  
A.K. Dash ◽  
N. Panda ◽  
S.G. Sahu ◽  
M. Prusty ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Photosynthetic Activity ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Urea Phosphate ◽  
Nutrient Use ◽  
Activity Yield ◽  
Use Efficiency

scholarly journals Productivity and nutrient use efficiency of hybrid rice (Oryza sativa L.) in response to integrated use of organic and inorganic sources of nutrients

2021 ◽  
Vol 17 (2) ◽  
pp. 390-403
Author(s):  
Dinesh Pandey ◽  
Anjum Ahmad ◽  
J.K. Chauhan ◽  
N. Pandey
Keyword(s):  
Growth Rate ◽  
Oryza Sativa ◽  
Grain Yield ◽  
Dry Matter ◽  
Hybrid Rice ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Inorganic Fertilizer ◽  
Nutrient Use ◽  
Use Efficiency

An experiment was carried out during the Kharif 2002 and 2003, to study the productivity and nutrient use efficiency of hybrid rice (Oryza sativa L.) in response to integrated use of organic and inorganic sources of nutrients at Research farm, IGAU, Raipur (CG). In all 12 treatments, comprising of different N, P and K levels and its conjunction with organic fertilizers were laid out in Randomized Block Design with 3 replications. The results revealed that application of inorganic fertilizer level of 150:80:60 kg NPK ha-1 significantly increased number of active leaf, leaf area, leaf area index and dry matter accumulation at later stages as compared to lower level of inorganic fertilizer. The conjunction of 100:60:40 kg NPK ha-1 along with PM or N blended with CDU found to be equally effective to that of inorganic fertilizer level of 150:80:60 kg NPK ha-1 for above growth parameters. The chlorophyll content during crop period under above level was the highest under said treatment. The highest crop growth rate was observed between 60-90 DAT followed by 90 DAT-harvest and 30-60 DAT, respectively. The per day accumulation of dry matter during 60-90 DAT period was almost three to four times of that accumulated during 30-60 DAT. Thereafter growth rate almost declined till maturity during both the years.The increased concentration of N at different growth stages and its uptake by plant helped in increasing the yield components and grain yield. The critical analysis of grain yield observations revealed that conjunction of lower levels of inorganic fertilizer (100:60:40 or 50:30:20 kg NPK ha-1) along with CDU or PM gave the saving of 50 kg N, 20 kg P and 20 kg K ha-1 for the cultivation of hybrid rice. Moreover, the higher buildup of available N and K has been also observed under said combination of organic and inorganic fertilizer treatments. The application of 150:80:60 kg NPK ha-1 along with PSB gave the highest buildup of available phosphorus. Inorganic level of 150:80:60 kg NPK ha-1 gave the highest production efficiency and productivity rating index, which was followed by application of inorganic fertilizer of 100:60:40 kg NPK ha-1 along with PM and blending of N with CDU, respectively. The application inorganic fertilizer of 50:30:20 kg NPK ha-1 + PM gave the highest nutrient efficiency during both the years. The highest input cost, net profit and per rupee investment was found under 150:80:60 kg NPK ha-1 followed by application of 100:60:40 kg NPK ha-1 along with PM.

scholarly journals ​Nutrient (Nitrogen, Phosphorous and Potassium) Uptake Capacity and Efficiency of different Elite Rice (Oryza sativa L.) Varieties under Delayed Planting Conditions

2021 ◽  
Author(s):  
Santrupta Manmath Satapathy ◽  
V.K. Srivastava ◽  
Suraj Gond ◽  
Prasanta Kumar Majhi
Keyword(s):  
Oryza Sativa ◽  
Agricultural Research ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Nutrient Content ◽  
Uptake Capacity ◽  
Rice Varieties ◽  
Nutrient Use ◽  
Main Plot ◽  
Use Efficiency

Background: The present investigation was concentrated to determine the nutrient uptake capacity of different varieties of rice (Oryza sativa L.) under delayed planting condition. The purpose of the study is to evaluate the nutrient content in straw and grain in different varieties of rice to understand the nutrient acquisition capacity. Methods: The experiment was conducted during kharif-2018 in a split plot design with three replications at Agricultural Research Farm, BHU, Varanasi with a combination of four rice varieties (HUR-3022, DRR-44, HUR-4-3 and HUR-105) as subplot factor and three dates of planting (06/09/2018, 13/08/2018 and 20/08/2018) as main-plot factor. Result: Among the varieties, DRR-44 was observed efficient for N, P and K absorption under timely planting conditions and recorded higher N content (1.01%) than HUR-3022 (0.91%) and HUR-105 (0.86%). The P (0.45%) and K (0.29%) content were observed highest for the variety DRR-44 on the first date of planting (06/08/2018). Maximum N, P and K uptake by grain and straw were recorded in DRR-44 followed by HUR-3022 and HUR-105. DRR-44 was also the highest grain and straw yielder. Thus, improved varieties of rice with higher nutrient use efficiency should be the priority for quality and higher yield of straw and grain of the crop.

scholarly journals Nutrient omission plot technique for yield response, indigenous nutrient supply and nutrient use efficiency estimation of rice (Oryza sativa L.) crop in Andaman & Nicobar Islands

2019 ◽  
Vol 56 (4) ◽  
pp. 388-395
Author(s):  
B Gangaiah
Keyword(s):  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Yield Response ◽  
Agronomic Efficiency ◽  
Nutrient Use ◽  
Efficiency Estimation ◽  
Use Efficiency ◽  
Nicobar Islands ◽  
Supply Capacity ◽  
Indigenous Nutrient Supply

A nutrient omission plot technique (NOPT) study in RCBD with 8 treatments (omission (-) of N, P, K, NP, NK, PK and no nutrient omission)and 3 replicates per treatment was made on rice at Port Blair, Andaman and Nicobar Islands during kharif 2015 to ascertain yield response and find out the most crucial nutrient for fertilization.The results revealed that yield response to fertilizers (NPK) was 2.63 t / ha (60.74%). The yield response of P (23.3 %) got multiplied by 2.16 and 2.60 times when combined with N and K applications as compared to their individual effects. Indigenous N, P and K supply capacity of the soil was estimated as 70.6, 10.0 and 80.0 kg/ha. Agronomic efficiency (kg grain / kg nutrient applied) was severely limited by P omission (10.13). The economics(Rs/ha) of rice cultivation indicates that omission of NPK & NP fertilizers results in losses. The highest profits realized with no omission (+NPK) were reduced by 52.3% with P omission. Omission of K followed by N and NK has less impact on profits. Rice crop duration got prolonged and shortened under P and N omission while K omission has no such effect.

scholarly journals Determination of Nutrient Accumulation Pattern of New Aromatic Rice (Oryza sativa L.) as Influenced by Different Applied Fertilizers and Plant Spacing

2020 ◽  
Vol 18 (1) ◽  
pp. 31-41
Author(s):  
AKM Alauddin Chowdhury ◽  
Md Nurul Huda Al Mamun ◽  
Md Khairul Islam ◽  
Md Mohashin Farazi
Keyword(s):  
Nutrient Uptake ◽  
Plant Density ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Plant Spacing ◽  
Accumulation Pattern ◽  
Nutrient Use ◽  
Plant Densities ◽  
Use Efficiency

Field and laboratory experiments were conducted at the Bangabandhu Sheikh MujiburRahman Agricultural University, Gazipur, during boro season of 2015-2016 to determine the response of rice crop (BU Dhan 2) to different plant densities under different fertilizer levels. The variety was grown with three fertilizer levels viz. recommended (57-10-8-7-0.9 kg NPKSZn ha-1), 50% higher (114-20- 16-14-1.8 kg NPKSZn ha-1) and 50% lower (28.5-5-4-3.5-0.45 kg NPKSZn ha-1) than recommended level and three plant spacing (20 cm x 25 cm, 20 cm x 20 cm and 20 cm x 15 cm) representing wider, standard and closer plant densities. Nutrient uptake of the variety was higher at higher level of fertilizer and closer plant spacing. The highest grain yield 5.18 t ha-1 of the variety was associated with the highest nutrient uptake under higher dose of fertilizer at closer plant spacing. This treatment combination also showed the highest nitrogen (86.53 kg ha-1), phosphorus (9.85 kg ha-1), potassium (103.9 kg ha-1), sulphur (12.27 kg ha-1) and zinc uptake (265.76 g ha-1) of the variety, although nutrient use efficiency was higher at lower fertilizer level under wider plant density. The Agriculturists 2020; 18(1) 31-41

scholarly journals Soil Test Based Fertilizer Application Improves Productivity, Profitability and Nutrient Use Efficiency of Rice (Oryza sativa L.) under Direct Seeded Condition

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1756
Author(s):  
Vijay Kant Singh ◽  
Poonam Gautam ◽  
Gangadhar Nanda ◽  
Salwinder Singh Dhaliwal ◽  
Biswajit Pramanick ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Oryza Sativa L ◽  
Nutrient Use Efficiency ◽  
Farmyard Manure ◽  
Field Investigation ◽  
Soil Test ◽  
Rice Grain ◽  
Nutrient Use ◽  
Direct Seeded ◽  
Use Efficiency

A field investigation on direct seeded rice (DSR) was carried out in the two consecutive rice growing seasons of 2017 and 2018 at Pantnagar, Uttarakhand, India for the development and validation of soil test crop response (STCR) to fertilizer and for assessing the performance of STCR-treatments as compared to the general recommended dose (GRD) in terms of yield, nutrient uptake and use efficiency, and the economics of DSR. For producing 1 Mg of rice-grain, the required nutrients (N, P, and K) were 2.01 kg, 0.44 kg, and 3.06 kg; the contribution from the soil was 22.05%, 37.34%, and 41.48%; from applied farmyard manure 23.25%, 28.34%, and 16.80%, from fertilizer 38.08%, 49.93%, and 252.98%; and from fertilizer with FYM 44.83%, 60.57%, and 278.70%; for N, P, and K, respectively. The STCR approach, with or without FYM, at both the target yields (4.5 Mg ha−1 and 5.0 Mg ha−1) markedly enhanced the grain yield (20.2% to 32.3%) and production efficiency over the GRD. It also exhibited a higher NPK uptake and use efficiency, along with better profitability, than the GRD. Therefore, the STCR-targeted yield approach could improve the yield, economics, and efficiency of nutrient use for direct seeded rice.

Tomato Production in Florida Using Fertigation Technology

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Mary Dixon ◽  
Guodong Liu
Keyword(s):  
Nutrient Use Efficiency ◽  
Health Benefits ◽  
Vegetable Crop ◽  
High Demand ◽  
Tomato Production ◽  
Nutrient Use ◽  
Use Efficiency

Tomato is in high demand because of its taste and health benefits. In Florida, tomato is the number one vegetable crop in terms of both acreage and value. Because of its high value and wide acreage, it is important for tomato production to be efficient in its water and nutrient use, which may be improved through fertigation practices. Therefore, the objective of this new 7-page article is to disseminate research-based methods of tomato production utilizing fertigation to enhance yield and nutrient use efficiency. Written by Mary Dixon and Guodong Liu, and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1392

Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

2018 ◽  
Vol 102 (4) ◽  
pp. 8-10
Author(s):  
Fernando García ◽  
Andrés Grasso ◽  
María González Sanjuan ◽  
Adrián Correndo ◽  
Fernando Salvagiotti
Keyword(s):  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Management Strategies ◽  
Crop Productivity ◽  
Soil Productivity ◽  
Nutrient Use ◽  
Grain Crop ◽  
Wide Scale ◽  
Use Efficiency

Trends over the past 25 years indicate that Argentina’s growth in its grain crop productivity has largely been supported by the depletion of the extensive fertility of its Pampean soils. Long-term research provides insight into sustainable nutrient management strategies ready for wide-scale adoption.

Improved nutrient management in cereals using Nutrient Expert and machine learning tools: Productivity, profitability and nutrient use efficiency

2021 ◽  
Vol 192 ◽  
pp. 103181
Author(s):  
Jagadish Timsina ◽  
Sudarshan Dutta ◽  
Krishna Prasad Devkota ◽  
Somsubhra Chakraborty ◽  
Ram Krishna Neupane ◽  
...  
Keyword(s):  
Machine Learning ◽  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Learning Tools ◽  
Nutrient Use ◽  
Use Efficiency
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