scholarly journals Different carbon sources enhance system productivity and reduce greenhouse gas intensity

2018 ◽  
Vol 64 (No. 10) ◽  
pp. 463-469 ◽  
Author(s):  
Yeboah Stephen ◽  
Zhang Reanzhi ◽  
Cai Liqun ◽  
Jun Wu
Keyword(s):  
Greenhouse Gas ◽  
Nutrient Management ◽  
Block Design ◽  
Carbon Sources ◽  
Triticum Aestivum L ◽  
N Fertilizer ◽  
System Productivity ◽  
Management Guidelines ◽  
Soil P ◽  
Greenhouse Gas Intensity

The aim of this study was to investigate the effect of biochar, straw and nitrogen (N) fertilizer on soil properties, crop yield and greenhouse gas intensity in rainfed spring wheat (Triticum aestivum L.), and to produce background dataset to improve nutrient management guidelines for semiarid environments. The two carbon sources (straw and biochar) were applied alone or combined with nitrogen fertilizer (urea, 46% N), whilst the soil without carbon amendment was fertilized by urea in the rates 0, 50 and 100 kg N/ha. The experiments were arranged in a randomized complete block design with three replicates. The greatest yields were found with 100 kg N/ha under biochar, straw and soils without carbon. Biochar treated soils produced the greatest grain yield at 1906 kg/ha, followed by straw at 1643 kg/ha, and soils without carbon at 1553 kg/ha. This was explained by increased easily oxidizable carbon and total soil nitrogen in the biochar treated soil (P &lt; 0.05). Straw treated soils and soils without carbon increased global warming potential by 13% and 14% compared to biochar amended soils. The biochar amended treatment also improved easily oxidizable carbon and total nitrogen (P &lt; 0.05), which supported the above results. BN<sub>100</sub> (15 t/ha biochar + 100 kg N/ha) reduced greenhouse gas intensity by approximately 30% compared to CN<sub>100</sub> (100 kg N/ha applied each year) and SN<sub>50</sub> (4.5 t/ha straw applied each year + 50 kg N/ha). Based on these results, biochar could be used with N-fertilizer as a soil conditioner to improve yield and reduced greenhouse gas intensity.

scholarly journals DOSES AND SPLIT NITROGEN FERTILIZER APPLICATIONS ON THE PRODUCTIVITY AND QUALITY OF ARUGULA1

2021 ◽  
Vol 34 (4) ◽  
pp. 824-829
Author(s):  
CAMILA SENO NASCIMENTO ◽  
CAROLINA SENO NASCIMENTO ◽  
ARTHUR BERNARDES CECÍLIO FILHO
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Fertilizer Application ◽  
Additional Treatment ◽  
N Fertilizer ◽  
Nitrate Content ◽  
Management Technique ◽  
Maximum Height ◽  
N Losses ◽  
Negative Environmental Impact

ABSTRACT Splitting nitrogen (N) fertilizer application can be an efficient nutrient management technique to improve productivity and plant quality, as well as to reduce the negative environmental impact caused by N losses. In this context, the present study investigated how the management of N affects the agronomic characteristics of field-grown arugula plants. Nine treatments were assessed in a randomized complete block design, in a 4 x 2 + 1 factorial scheme, with three replicates. The evaluated factors were doses of N (60, 120, 180 and 240 kg N ha-1), split N fertilizer applications at side-dress (two and three times) and an additional treatment without a N supply. Maximum height was obtained with the application of 198 kg N ha-1. Nitrate content, fresh mass and productivity increased with increasing N doses. There was no effect of split N fertilizer applications on the characteristics evaluated. Therefore, the supply of 240 kg N ha-1 divided into two portions was considered as the best management strategy.

scholarly journals Effect of rhizospheric nutrient management on root growth, yield, and nutrient use efficiency of wheat (Triticum aestivum L.) under Tarai region of Uttarakhand, India

2020 ◽  
Vol 12 (4) ◽  
pp. 511-518
Author(s):  
Arvind Kumar ◽  
Vijay Pal Singh ◽  
Rajeew Kumar ◽  
D. S. Pandey ◽  
V.K. Singh
Keyword(s):  
Triticum Aestivum ◽  
Grain Yield ◽  
Nutrient Management ◽  
Block Design ◽  
Nutrient Use Efficiency ◽  
Triticum Aestivum L ◽  
Root Proliferation ◽  
Flowering Stage ◽  
Fertilizer Placement ◽  
Absolute Control

Rhizospheric nutrient management and fertilizer placement can be a useful measure to improve wheat crops productivity in Tarai regions of India.  An experiment was conducted to evaluate the effects of rhizospheric nutrient management on wheat (Triticum aestivum L.) to explore the relationship between root proliferation, grain yield and NUE in Tarai region of Uttarakhand,  India.  It comprised 3 fertilizer application (P1 to P3) and 6 nutrient management treatments (T1 to T6) with absolute control in a randomized complete block design and replicated thrice. Experimental results indicated that P1 (1.29 and 1.47; 1.84 and 2.29 mg/cc) produced greater root density, and compared to P3 (1.39 and 1.49; 1.74 and 2.17 mg/cc), P2 (1.24 and 1.36; 1.68 and 1.97 mg/cc) and absolute control (0.85 and 1.19; 1.42 and 1.69 mg/cc) at maximum tillering and flowering stage in year 2017-18 and 2018-19, respectively .The root proliferation also influenced the grain yield (5.4 and 5.5; 5.3 and 5.3; 5.1 and 5.2; 3.5 and 3.3 t/ha ) in P1, P3, P2 and absolute control in the year 2017-18 and 2018-19, respectively.  However, the grain yield and root distributions (at the flowering stage) recorded significantly (p=0.05) maximum in T4 (5.8 and 5.7 t/ha; 1.84 and 2.32 mg/cc) followed by T3, T6, T1, T5, T2 treatments and minimum in absolute control (3.5 and3.3 t/ha; 1.42 and 1.69 mg /cc) in the year of 2017-18 and 2018-19, respectively.  Thus, the rhizospheric nutrient management (75% RDF+ vermicompost + PSB) with fertilizer placement can be a feasible approach for increasing grain yield and NUE in Tarai regions of Uttarakhand, by promoting deep root development and reducing fertilizer inputs in wheat. 

scholarly journals Growth, productivity, physical and economic optima and yield gaps estimation in wheat (Triticum aestivum L.) through site specific nutrient management approaches under inner-Terai region of Chitwan, Nepal

2021 ◽  
Vol 4 (1) ◽  
pp. 191-202
Author(s):  
Sudeep Marasini ◽  
Lal Prasad Amgain
Keyword(s):  
Triticum Aestivum ◽  
Nutrient Management ◽  
Block Design ◽  
Winter Season ◽  
Triticum Aestivum L ◽  
Optimum Level ◽  
Dry Matter Accumulation ◽  
Site Specific ◽  
Yield Gaps ◽  
Management Approaches

An on-farm field experiment was accomplished during the winter season of 2018/19 under inner Terai region at Khairahani, Chitwan for evaluating the influence of various site specific nutrient management approaches on growth, yield, optimum fertilizer dose and yield gaps of wheat (Triticum aestivum, L.). The experiment was laid out in Randomized Complete Block Design (RCBD) in three replications with different eight nutrient management practices: T1- farmers fertilization practice (FFP) (52:33:18 kg NPKha-1), T2 - Blanket recommendation (BR) (100:50:25 kg NPK ha-1), T3 - SSNM-NE (110:47:46 kg NPK ha-1),T4 - LCC-N+NE-P&K, T5 - NE-N + farmers -P&K, T6 - LCC- N + farmers–P&K, T7 - Nitrogen Omission Plot (NOPT) + NE- P&K, and T8 - NARC recommendation (120:60:40 kg NPK ha-1). The result findings indicated that the NARC recommendation was comparatively superior over other treatments in terms of plant height, dry matter accumulation, crop growth rate and yield, but the profitability (B:C ratio) was found higher in SSNM-Nutrient Expert recommendation. The physical and economic optimum level of fertilizer for wheat obtained was 135:47.66:43.94 kg NPK ha-1 and 130: 47.86:43.61 kg NPK ha-1, respectively. The yield gaps between farmers practice and SSNM-Nutrient Expert was found to be 110% and 41%, respectively over potential yield of wheat. Thus, it could be suggested that there is great potential to improve the yield of wheat through the NARC recommendation and the SSNM- Nutrient Expert model to raise sustained productivity and income of wheat farmers in inner-Terai region of Nepal.  

scholarly journals Verifikasi Dosis Rekomendasi Pemupukan Hara Spesifik Lokasi untuk Padi Varietas Hibrida

2016 ◽  
Vol 34 (3) ◽  
pp. 165
Author(s):  
Suyamto Suyamto ◽  
M. Saeri ◽  
D. P. Saraswati ◽  
Robi’in Robi’in
Keyword(s):  
Nutrient Management ◽  
Seed Quality ◽  
Hybrid Rice ◽  
Block Design ◽  
Rice Variety ◽  
N Fertilizer ◽  
Fertilizer Rate ◽  
Plot Size ◽  
Hybrid Variety ◽  
Rice Yields

<p>IAARD in collaboration with IRRI has developed site specific nutrient management (SSNM or PHSL) recommendation, which can be accessed through PHSL-web (http:/webapps.irri.org/nm/id). PHSL recommendations were evaluated for inbred rice variety but not yet for hybrid rice. The objective of this experiment was to verify the effectiveness of PHSL recommendation for hybrid rice and to evaluate the response of hybrid rice to N fertilizer. Two experiments were conducted during the dry season of 2012 in two locations (Malang and Blitar). The first experiment consisted of 6 treatments: (1) PHSL recommendation based on yield target of hybrid variety (Mapan-P05) (10.3 t/ha or 20% higher compared to that of inbred variety), (2) same as treatment 1 for Hipa-10 hybrid variety, (3) same as treatment 1 for Ciherang variety, (4) PHSL based on the yield target similar to that of inbred variety (8.6 t/ha) applied for Mapan-P05 hybrid variety, (5) same as treatment 4 applied for Hipa-10 hybrid variety, and (6) same as treatment 4 applied for Ciherang inbred variety. PHSL recommendation for hybrid rice was 300 kg NPK (Phonska) + 376 kg urea/ha applied 4 times, while that for inbred rice was 200 kg NPK (Phonska) + 332 kg urea/ha applied 3 times. The experiment was arranged in a randomized complete block design, 4 replications, and plot size was 5 m x 10 m. The second experiment was arranged in a split plot design with four replications and plot size 5 m x 10 m. The main plots consisted of 4 rates of urea application namely: 0; 150; 300; and 450 kg urea/ha. The sub plots were two varieties namely: Mapan-P05 (hybrid) and Ciherang (inbred). Soil was analyzed before the conduct of experiment. Main data collection included yield of rice, hybrid rice respon to urea fertilizer. Results of the experiment showed that fertilizer rate based on PHSL for hybrid rice was not appropriate. Applying rate of fertilizers based on PHSL for hybrid rice resulted in rice yields not significantly different to that of inbred variety fertilized based on PHSL for inbred variety. The response of hybrid variety to N fertilizer was higher than that of inbred variety, suggesting that hybrid rice produced higher yield than did inbred, at the same rate of fertilizer. To obtain a higher yield of hybrid rice (such as Mapan-P05) the rate and time of fertilizer applications are not necessarily to be increased as recommended on PHSL-web. Using the same fertilizer rate, hybrid rice (such as Mapan-P05) produced higher yield compared to that of inbred variety, which indicated higher efficiency of fertilization. Yield of hybrid rice Hipa-10 variety was not only determined by fertilizer rate but also by other factors, such as seed quality and crop management (M). The existence of GxExM interaction was higher for hybrid rice, meaning hybrid variety required very specific environment.<br />Keywords: </p>

scholarly journals Calibration of Nitrogen Fertilizer for Quality Protein Maize (Zea mays L.) Based on In-Season Estimated Yield using a Handheld NDVI Sensor in the Central Rift Valley of Ethiopia

2016 ◽  
Vol 3 (1) ◽  
pp. 25-32
Author(s):  
Addis Tadesse ◽  
Hae Koo Kim ◽  
Adugna Debela
Keyword(s):  
Grain Yield ◽  
Environmental Pollution ◽  
Precision Agriculture ◽  
Rift Valley ◽  
Management Practices ◽  
Nutrient Management ◽  
Block Design ◽  
N Fertilizer ◽  
Net Benefit ◽  
Exponential Relationship

Maize is one of a highly valued crop in the national diet of Ethiopians especially in southern and southeastern regions of the country; it is produces across various agro-ecologies of the country. However, its productivity is constrained by blanket application of mineral nutrients, in particular, nitrogen (N). In this study, we aimed to test site-specific nutrient management supported by precision agriculture tools can provide extension agents and farmers better ways to manage nitrogen, to increase net benefit and reduce environmental pollution. The drastic increase in N fertilizer cost, environmental pollution and increased public scrutiny have encouraged development and implementation of improved N management practices. In this context, on-farm and on-station experiment was conducted during 2014 main cropping season in the central rift valley of Ethiopia. The objective of the study was calibrating N fertilizer rate using the handheld NDVI sensor for efficient management of N to optimize grain productivity. The trials were layout in a randomized complete block design with seven levels of N fertilizer with phosphorus applied uniformly. The study evaluated the relationship between grain yield and NDVI using the handheld Green seeker sensor. The result shows that a strong nonlinear relationship (R2=0.79) were exist between NDVI values and harvest grain yield. In similarly fashion positive exponential relationship (R2=0.71) between INSEY and grain yield during vegetative growth stage six (V6) at both locations. Overall this study shows that the handheld NDVI sensor can be an indicator to better manage N fertilizer application.

scholarly journals Effect of Lime and Integrated Nutrient Management on Rice-pea Cropping System

2021 ◽  
Vol 12 (3) ◽  
pp. 228-237
Author(s):  
Arenjungla Ao ◽  
◽  
Lowrence Kithan ◽  
L. Tongpang Longkumer Longkumer ◽  
◽  
...  
Keyword(s):  
Nutrient Management ◽  
Synergistic Effects ◽  
Block Design ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Cost Ratio ◽  
Integrated Nutrient Management ◽  
Farm Yard Manure ◽  
Yield Attributes ◽  
System Productivity

The field experiment was conducted to study the individual and synergistic effects of lime, NPK and manure application on rice–pea productivity during the kharif and rabi seasons of 2016–17 and 2017–18 from June to January in the experimental farm of SASRD, Nagaland University, Nagaland State, India. The experiment was laid out in Factorial Randomized Block Design with two levels of lime viz. without lime, Lime @ 2 q ha-1 and four levels of integrated nutrient management viz. Recommended Dose of Fertilizers, Recommended Dose of Fertilizers (75%)+Farm Yard Manure @ 6 t ha-1, Recommended Dose of Fertilizers (75%)+Poultry manure @ 1 t ha-1 and Recommended Dose of Fertilizers (75%)+Azospirillum+Phosphorus Solubilizing Bacteria and replicated thrice. Results revealed that the application of lime @ 2 q ha-1 brought about a significant increase in the growth and yield attributes of rice and pea. Among the nutrient sources, the application of Recommended Dose of Fertilizers (75%)+Farm Yard Manure@ 6 t ha-1 proved superior in terms of growth and yield over other treatments. With regard to economics like gross return ha-1, net return ha-1, benefit-cost ratio, system productivity and Rice Equivalent Yield (REY) treatment interactions of lime @ 2 q ha-1 and Recommended dose of fertilizers (75%)+farm yard manure @ 6 t ha-1 performed better by recording the highest.

INFLUENCE OF GREENHOUSE SHADING AND DIFFERENT NUTRIENT MANAGEMENT PRACTICES ON ALLEVIATING HEAT STRESS, IMPROVING PLANT NUTRIENTS STATUS, FLOWERING GROWTH AND YIELD OF TOMATO

2020 ◽  
Vol 51 (4) ◽  
pp. 1001-1014
Author(s):  
Sulaiman & Sadiq
Keyword(s):  
Heat Stress ◽  
Management Practices ◽  
Nutrient Management ◽  
Block Design ◽  
Nutrient Status ◽  
Growth And Yield ◽  
Reproductive Growth ◽  
Positive Effects ◽  
Nutrition Programs ◽  
The Impact

The experiment was conducted in a greenhouse during 2017 and 2018 growing seasons to evaluate the impact of the shading and various nutrition programs on mitigating heat stress, reducing the use of chemical minerals, improving the reproductive growth and yield of tomato plant. Split-plot within Randomized Complete Block Design (RCBD) with three replications was conducted in this study. Shading factor was allocated in the main plots and the nutrition programs distributed randomly in the subplots. Results indicate that shading resulted in the decrease of daytime temperature by 5.7˚C as an average for both seasons; thus a significant increasing was found in leaf contents of macro nutrients (Nitrogen, Phosphorous, and Potassium), and micro nutrients (Iron, Zinc and Boron), except the Iron content in 2018 growing season. Furthermore, shading improved significantly the reproductive growth and tomato yield. Among the plant nutrition programs, the integrated nutrient management (INM) including the application of organic substances, bio inoculum of AMF and 50% of the recommended dose of chemical fertilizers; lead to the enhancement of nutrients content, reproductive characteristics and plant yield. Generally, combination of both shading and INM showed positive effects on plants nutrient status and persisting balance on tomato flowering growth and fruits yield.

Effect of Integration of Fertilizers and FYM on Productivity and Soil Health of Rainfed Potato

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
S. K. YADAV ◽  
A. K. SRIVASTAVA ◽  
T. K. BAG
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Soil Health ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Research Station ◽  
Yield Attributes ◽  
Hill Region ◽  
North Eastern ◽  
Synthetic Fertilizers

A field trial was conducted during two consecutive summer seasons of2012 and 2013 at ICAR-Central Potato Research Station, Shillong, Meghalaya to evaluate the integration of nutrient sources on productivity and soil health under rainfed potato cultivation in north eastern hill region of India. There were six treatments of integrated nutrient management viz., 100% Recommended dose of fertilizers,75% RDF through synthetic fertilizers and 25% recommended dose of nitrogen (RDN) through FYM, 50% RDF and 50% RDN through FYM, 25% RDF and 75% RDN through FYM, 100% RDN through FYM and control (no application of any sources of nutrients). The experiment was laid out in randomized block design with four replications. Nutrient management practices showed the significant improvement on growth and yield attributes of potato over control plot. Highest productivity of potato tubers (t/ha) was noticed with application of 75% RDF through synthetic fertilizers along with 25% RDN through FYM. Similarly, the maximum net return was associated with application of 75% RDF and 25% RDN through FYM under investigation. Application of 75% Recommended dose of nutrients through synthetic fertilizers in combination with 25% Recommended dose of nitrogen through FYM was more profitable for sustainable production of potato in the north eastern hill region of India.

Sign in / Sign up

Export Citation Format

Share Document