scholarly journals Fodder quality and nitrate estimation of oats grown under different nutrient management options

2021 ◽  
Vol 74 (4) ◽  
pp. 331-337
Author(s):  
Dinesh Kumar ◽  
Magan Singh ◽  
Sanjeev Kumar ◽  
Rajesh Kumar Meena ◽  
Rakesh Kumar
Keyword(s):  
Nutrient Management ◽  
Management Options ◽  
Fodder Quality

scholarly journals Soil Health as Influenced by Fertilizer Management in Rice Based Cropping System

2021 ◽  
Vol 24 (2) ◽  
pp. 119-131
Author(s):  
MM Haque ◽  
MR Islam ◽  
MS Rahman ◽  
MAR Sarkar ◽  
MAA Mamun ◽  
...  
Keyword(s):  
Crop Production ◽  
Nutrient Management ◽  
Soil Health ◽  
Cropping System ◽  
Crop Productivity ◽  
Cow Dung ◽  
Wet Season ◽  
Management Options ◽  
Cropping Patterns ◽  
Soil C

Nutrient management influences soil health and crop productivity. Sustained crop production re-quires specific nutrient management options after a certain period. The objectives of this investigation were to examine the effects of inorganic and organic fertilization on yields and soil carbon budget under rice based cropping patterns in Bangladesh. The research data and informationhave been gen-erated based on previouslypublished, unpublished sources and own concept.Omission of K or im-balanced K are more influential for reduction in grain yield up to 47% in Boro (dry) season but N was most limiting up to 35% in T. Aman (wet) season. With existing fertilizer rates for growing rice, the balances of N and K are always negative. Balanced chemical fertilizer (NPKSZn) can be an option for improving crop productivity and maintain soil quality. Net ecosystem carbon (C) balances are posi-tive when 3 t ha-1 cow dung (CD), 2 t ha-1 poultry manure (PM) and 2 t ha-1 vermicompost (VC) are used in combination with chemical fertilizers. Soil amendments with organic nutrient sources (rice straw, CD, PM, VC, legume crops) and rice based cropping patterns such as T. Aman-Mustard-Boro, Boro-Fallow-Fallow, Jute-T. Aman-Fallow, Wheat-Mungbean-T. Aman, Grass pea- T. Aus-T. Aman and Potato-Boro-T. Aman can be beneficial in improving soil C budget, soil nutrient ratio, total crop production and maintenance of environmental health that will meet SDGs goal. Bangladesh Rice J. 24 (2): 119-131, 2021

scholarly journals Reducing river export of nutrients and eutrophication in Lake Dianchi in the future

2020 ◽  
Vol 2 (1) ◽  
pp. 73-90 ◽  
Author(s):  
Chuan Ma ◽  
Maryna Strokal ◽  
Carolien Kroeze ◽  
Mengru Wang ◽  
Xiaolin Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Management ◽  
Environmental Policies ◽  
Management Options ◽  
Lake Dianchi ◽  
Pollution Levels ◽  
The North ◽  
River Export ◽  
Advanced Wastewater Treatment ◽  
Sewage Systems

Abstract Lake Dianchi is severely polluted with nitrogen (N) and phosphorus (P). The effects of implementing environmental policies and technologies on future lake quality are not well understood. We analyse effects of environmental policies and technologies on future river export of nutrients into Lake Dianchi. We develop scenarios for 2050 and analyse these with the existing MARINA-Lakes model (Model to Assess River Inputs of Nutrient to lAkes). The scenarios differ in assumptions about future nutrient management in agriculture, sewage systems and mining. In the SSP3 (Shared Socio-economic Pathway 3) scenario, river export of nutrients to Lake Dianchi is projected to increase 1.4–4.4 times between 2012 and 2050. In the Current Policies scenario, rivers may export fewer nutrients than in SSP3, but this may not avoid eutrophication. Effects of improved nutrient management on river export of nutrients differ among nutrient forms, sub-basins and sources (e.g., urbanization in the north, agriculture in the middle and south). Pollution levels can be reduced below the 2012 level in an Optimistic scenario assuming advanced wastewater treatment, improved nutrient management in agriculture and no mining. However, even this may not completely prevent eutrophication. Preventing eutrophication requires even more efforts, for example, in implementing circular-oriented management options.

scholarly journals MANAGEMENT OPTIONS FOR DROUGHT PRONE RAINFED LOWLAND RICE IN ASIA: A REVIEW

2020 ◽  
Vol 1 (2) ◽  
pp. 82-84
Author(s):  
Gaurab Neupane ◽  
Avish Dhakal ◽  
Kalyan Bhattarai ◽  
Pradeep Kumar Teli
Keyword(s):  
Drought Stress ◽  
Nutrient Management ◽  
Oryza Sativa L ◽  
Management Strategies ◽  
Soil Conditions ◽  
Management Options ◽  
Water Losses ◽  
Rice Area ◽  
Rainfed Lowland ◽  
Moderate Drought

The rice-based rainfed lowland system in Asia covers about 45 million hectares which is almost 30% of the total rice area worldwide. Rice (Oryza sativa L.) is the main crop in this system and grown in bunded fields that are flooded for at least part of the season. Altogether, drought stress is the most important limitation to production in rainfed lowlands and is estimated to affect frequently about 19 to 23 million hectares resulting the reduced yield and hunger problems. In addition, drought-prone environments are often simultaneously affected by other abiotic stresses like submergence, adverse soil conditions, pests and weeds. In turn two main management strategies for drought stress alleviation in rice can be distinguished. The first strategy is based on management options which allow to escape drought by either avoiding severe dry periods or by providing access to additional water resources. The second strategy is to moderate drought by reducing unproductive water losses and thereby “saving” water for productive transpiration. Within both strategies there are several management options which offer considerable scope for improvement of drought-prone rainfed lowlands, however, direct seeding and improved nutrient management are probably the most widely applicable options. “Aeroabic rice” a new system of rice cultivation still under development and is thought to have potential to adopt in specific target environments within the rainfed lowlands of Asia.

scholarly journals Improving Performances of Late Transplant Aman Rice Through Spacing and Nutrient Management Options

2020 ◽  
Vol 23 (1) ◽  
pp. 1-11
Author(s):  
RM Foysal ◽  
B Karmakar ◽  
MAR Sarkar ◽  
AKMH Akther ◽  
S Akhter ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Nutrient Management ◽  
Block Design ◽  
Poultry Manure ◽  
Organic Fertilizers ◽  
Management Options ◽  
Inorganic Fertilizers ◽  
Yield And Yield Components ◽  
Two Factors

Crop and nutrient management options could improve the yield performances of late transplant Aman rice which is generally lower compared to optimum transplanting. To address these issues, an experiment was conducted at Bangladesh Agricultural University, Mymensingh to investigate the effect of spacing and nutrient management options on yield and yield components of late transplant Aman rice and to find out the better treatment combination to obtain higher yield. The experiment was laid out in two factors randomized complete block design (RCBD) with three replications consisting of three spacings viz. S1 =25 cm×15 cm , S2 =25 cm×10 cm and S3 =20 cm×10 cm; and eight nutrient management options viz. N0 = Control (No fertilizer), N1 = Poultry manure @ 5 t ha-1 , N2 = Vermicompost @ 3 t ha-1 , N3 = Researcher’s practice (Urea, TSP, MoP, Gypsum and ZnSO4 @ 180,75,105, 60 and 7.5 kg ha-1, respectively), N4 = 75% N3 + Poultry manure @ 2.5 t ha-1, N5 = 50% N3+ poultry manure @ 5 t ha-1, N6 = 75% N3+ Vermicompost @ 1.5 t ha-1 and N7 = 50% N3+ Vermicompost @ 3 t ha-1. Pre-germinated seeds of BRRI dhan46 were sown in wet nursery bed on 16 August and 30–d–old seedlings were transplanted as per treatments on 15 September in 2017. Yield and yield components were significantly influenced by spacing, nutrient management options and their interactions. The highest yield (5.20 t ha-1) was obtained the spacing 25 cm×10 cm which was at par with 25 cm×15 cm (5.12 t ha-1) and the lowest (4.88 t ha-1) was in 20 cm×10 cm. Statistically similar grain yield 5.85, 5.81 and 5.79 t ha-1 were produced in the treatments N3, N4 and N6, respectively. Grain yield increased in the treatments having combination of inorganic and organic nutrient, and also in the optimum inorganic fertilizers (researcher’s practice). The highest grain yield (5.98 t ha-1) was obtained in the interaction S2×N3 which was at par with S1 x N3, S1 x N4, S1 x N6, S2 x N4 and S2 x N6. Performances of sole organic fertilizers were not satisfactory level. Therefore, reduced amount (75%) of inorganic fertilizers combined with organic fertilizers (poultry manure 2.5 t ha-1 or vermicompost 1.5 t ha-1) along with closer spacing 25 cm×10 cm would be recommended to achieve better and sustainable yield performance of late transplant Aman rice cv. BRRI dhan46. Bangladesh Agron. J. 2020, 23(1): 1-11

scholarly journals 434 Environmental Risk Assessment—A Nutrient Management Planning Strategy For Nursery and Greenhouse Systems

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 468C-468
Author(s):  
John D. Lea-Cox
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Risk Management ◽  
Nutrient Management ◽  
Planning Process ◽  
Nutrient Loss ◽  
Assessment Process ◽  
Management Options ◽  
Management Planning ◽  
Nutrient Runoff

In 1998, the state of Maryland adopted some of the toughest nutrient management planning regulations in the Nation, requiring virtually all agricultural operations plan and implement nitrogen and phosphorus-based management plans by Dec. 2002. The nursery and greenhouse industry is faced with a far more complicated nutrient management planning process than traditional agronomic planning scenarios. Factors include a large number (>500) of plant species, various fertilization and irrigation strategies, with crop cycles ranging from 6 weeks (bedding plants) to upwards of 15 years for some tree species in field production, often with a lack of knowledge of specific nutrient uptake rates and utilization. In addition, unique infrastructural and site characteristics that contribute to water and nutrient runoff from each nursery contribute to a multitude of variables that should be considered in the planning process. The challenge was to identify a simple, effective process for nutrient management planning that would a) provide an accurate assessment of nutrient loss potential from this wide variety of production scenarios, b) identify those specific factors that contribute most to nutrient leaching and runoff, and c) provide a mechanism to economically assess the various risk management (mitigation) scenarios. This risk assessment process provides information on a number of fixed (site) and dynamic (management) variables for soils/substrates, irrigation and fertilization practices, together with any surface water management systems (e.g. containment ponds, riparian buffers). When all the risk factors for a nursery are evaluated and scored, the complete picture of risk assessment then emerges. By identifying higher risk factors and evaluating different risk management options, the grower and/or nutrient management planner can then choose economic alternatives to reduce the potential for nutrient runoff.

scholarly journals The Agricultural Potentiality Of Some Wetland Soils Under Sylhet Basin Of Bangladesh

1970 ◽  
Vol 21 (1) ◽  
pp. 39-46 ◽  
Author(s):  
MJ Uddin ◽  
ASM Mohiuddin ◽  
ATMM Kamal ◽  
M Anwat Hossain
Keyword(s):  
Deep Water ◽  
Environmental Conditions ◽  
Irrigation Water ◽  
Nutrient Management ◽  
Ph Value ◽  
Rice Production ◽  
Wetland Soils ◽  
Cropping Pattern ◽  
Management Options ◽  
Denitrification Process

An investigation was conducted to study some representative wetland soils under Sylhet basin of Bangladesh with a view to evaluating the agricultural potentiality and its management options. The soils are nutritionally very productive. Soil textural and other environmental conditions are more appropriate for rice production. The contents of nitrogen and boron is low. Probably, the denitrification process leads to the loss of nitrogen in this basin soils. Other nutrients seem to be at a balanced condition for the successful growth of deep water rice. Boro and deep water T. Aman were introduced in the study area in recent times. Availability of irrigation water in the dry periods and shallow inundation level in the monsoon may be the main cause of such cropping pattern. Due to the changes in landuse, demand for nitrogen and phophorus fertilizer have increased. pH value stands near neutral which indicates the agricultural viability of the soils. The present investigations ascertained that the study area including the wetland of Bangladesh can be economically exploited through appropriate nutrient management without any extra agro?chemical use. DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9743 DUJBS 2012 21(1): 39-46

scholarly journals Integrated Nutrient Management in Rice–Wheat Cropping System: An Evidence on Sustainability in the Indian Subcontinent through Meta-Analysis

Agronomy ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 71 ◽  
Author(s):  
Sheetal Sharma ◽  
Rajeev Padbhushan ◽  
Upendra Kumar
Keyword(s):  
Grain Yield ◽  
Organic Farming ◽  
Nutrient Management ◽  
Indian Subcontinent ◽  
Meta Analysis ◽  
Cropping System ◽  
Crop Productivity ◽  
Integrated Nutrient Management ◽  
Management Options ◽  
The Impact

Over years of intensive cultivation and imbalanced fertilizer use, the soils of the Indiansubcontinent have become deficient in several nutrients and are impoverished in organic matter.Recently, this region has started emphasizing a shift from inorganic to organic farming to managesoil health. However, owing to the steadily increasing demands for food by the overgrowingpopulations of this region, a complete shift to an organic farming system is not possible. The rice–wheat cropping system (RWCS) is in crisis because of falling or static yields. The nations of thisregion have already recognized this problem and have modified farming systems towardintegrated nutrient management (INM) practices. The INM concept aims to design farmingsystems to ensure sustainability by improving soil health, while securing food for the populationby improving crop productivity. Therefore, this paper was synthesized to quantify the impact androle of INM in improving crop productivity and sustainability of the RWCS in the context of theIndian subcontinent through meta-analysis using 338 paired data during the period of 1989–2016.The meta-analysis of the whole data for rice and wheat showed a positive increase in the grainyield of both crops with the use of INM over inorganic fertilizers only (IORA), organic fertilizersonly (ORA), and control (no fertilizers; CO) treatments. The increase in grain yield was significantat p < 0.05 for rice in INM over ORA and CO treatments. For wheat, the increase in grain yield wassignificant at p < 0.05 in INM over IORA, ORA, and CO treatments. The yield differences in theINM treatment over IORA were 0.05 and 0.13 Mg ha−1, respectively, in rice and wheat crops. Thepercent yield increases in INM treatment over IORA, ORA, and CO treatments were 2.52, 29.2, and90.9, respectively, in loamy soil and 0.60, 24.9, and 93.7, respectively, in clayey soil. The net returnsincreased by 121% (INM vs. CO) in rice, and 9.34% (INM vs. IORA) and 127% (INM vs. CO) inwheat crop. Use of integrated nutrient management had a positive effect on soil properties ascompared to other nutrient management options. Overall, the yield gain and maintenance of soilhealth due to INM practices over other nutrient management practices in RWCS can be a viablenutrient management option in the Indian subcontinent.

Post–flood nitrogen and basal phosphorus management affects survival, metabolic changes and anti-oxidant enzyme activities of submerged rice (Oryza sativa)

2014 ◽  
Vol 41 (12) ◽  
pp. 1284 ◽  
Author(s):  
Priyanka Gautam ◽  
Banwari Lal ◽  
Rajagounder Raja ◽  
Mirza Jaynul Baig ◽  
Deepika Haldar ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Light Transmission ◽  
Soluble Sugars ◽  
Foliar Spray ◽  
Metabolic Changes ◽  
Turbid Water ◽  
Management Options ◽  
Existing Problems ◽  
Anti Oxidant ◽  
N Management

Flooding is one of the major harmful abiotic stresses in the low lying areas of Asia and crop losses due to submergence are considerably high. Along with plant breeding techniques, agronomic management options in general and nutrient management in particular should be taken into consideration. Response of Sub 1 and non-Sub1 cultivars of rice to post-flood nitrogen (N) management under variable flood water was compared at maximum tillering stage. Submergence tolerance on survival, leaf senescence, metabolic changes, and anti-oxidant enzymatic activities were evaluated. Sub1 cultivars proved their superiority over IR-20 in terms of significantly higher survival, anti-oxidant enzymes and lower metabolic changes. Turbid water resulted in lower survival because of poor light transmission, chlorophyll retention and silt deposition. Basal phosphorus reduced the elongation, senescence and ethylene accumulation. Post-flood foliar spray of urea substantially increased the chlorophyll, soluble sugars and extenuated ethylene accumulation resulting in significantly higher survival. These nutrient management options can provide opportunities for better survival and productivity even under turbid water, helping farmers to cope with the existing problems in flood-prone areas.

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