Closing yield gaps in maize production in Southeast Asia through site-specific nutrient management

2014 ◽  
Vol 156 ◽  
pp. 219-230 ◽  
Author(s):  
J.M. Pasuquin ◽  
M.F. Pampolino ◽  
C. Witt ◽  
A. Dobermann ◽  
T. Oberthür ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Nutrient Management ◽  
Maize Production ◽  
Site Specific ◽  
Yield Gaps

scholarly journals Site-Specific Nutrient Management for Rainfed Maize in Western Mid-Hills of Nepal

2015 ◽  
Vol 3 (2) ◽  
pp. 227-231 ◽  
Author(s):  
Prakash Ghimire ◽  
Khem Raj Dahal ◽  
Santosh Marahatta ◽  
Krishna Devkota ◽  
Buddhi Raj Ghimire
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Maize Production ◽  
Site Specific ◽  
Fertilizer Recommendation ◽  
Application Rates ◽  
Development Committee ◽  
Fertilization Practice ◽  
Village Development Committee ◽  
On Farm

 On-farm experiment was conducted in eight farmers’ field, of Khasyoli village development committee (952 to 1415 masl), Nepal, from April to September, 2011 to address the major constraint (nutrient management) to maize production through site-specific nutrient management (SSNM) as this approach is popular among scientists. The experiment comprised three nutrient omission plots (0N, 0P, and 0K), an ample NPK plot, and a farmers’ fertilization practice (FFP) plot, arranged in randomized complete block design. Farmers planted open pollinated variety (Manakamana-3) and managed in their way. Field-specific NPK application rates were calculated by considering nutrient demand, indigenous NPK supply and recovery efficiency of fertilizers. Grain yield in FFP (2.32 Mg/ha) and 0N (1.79 Mg/ha) plots differed significantly from each other and rest of the treatments, but was statistically similar among 0P (3.18 Mg/ha), 0K (3.40 Mg/ha) and ample NPK (3.38 Mg/ha) plots. Post-harvest grain and stover analysis revealed that indigenous NPK supply (20-71 kg N, 19-68 kg P2O5 and 51-164 kg K2O/ha) of soil vary among the farmers’ field. Moreover, soil was poor in indigenous N supply (42 kg/ha), but rich in indigenous P2O5 (35 kg/ha) and K2O (90 kg/ha) supply, on an average. As per the principles of SSNM, the initial fertilizer recommendation made can vary from 40-222 kg N, 0- 93 kg P2O5, and 0-50 kg K2O/ha. On an average, farmers may apply no or lower dose of P2O5 (18 kg/ha) and K2O (3 kg/ha) but need to significantly increase dose of N (143 kg/ha) fertilizer for enhancing soil and maize productivity.Int J Appl Sci Biotechnol, Vol 3(2): 227-231 DOI: http://dx.doi.org/10.3126/ijasbt.v3i2.12538   

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 Site-Specific Effects of Organic Amendments on Parameters of Tropical Agricultural Soil and Yield: A Field Experiment in Three Countries in Southeast Asia

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 348
Author(s):  
Thuy Thu Doan ◽  
Phimmasone Sisouvanh ◽  
Thanyakan Sengkhrua ◽  
Supranee Sritumboon ◽  
Cornelia Rumpel ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Southeast Asia ◽  
Biomass Production ◽  
Nutrient Availability ◽  
Organic Amendments ◽  
Water Infiltration ◽  
Elemental Content ◽  
Soil Parameters ◽  
Short Term ◽  
Site Specific

Organic amendments may improve the quality of acidic tropical agricultural soils with low organic carbon contents under conventional management (mineral fertilization and irrigation) in Southeast Asia. We investigated the effect of biochar, compost and their combination on maize growth and yield, soil physical, biological and chemical properties at harvesting time at four sites in three countries: Thailand, Vietnam and Laos. Treatments consisted of 10 t·ha−1 cow manure compost and 7 t·ha−1 of Bamboo biochar and their combination. Maize biomass production and cop yields were recorded for two seasons. Elemental content, pH and nutrient availability of soils were analyzed after the first growing season. We also characterized macrofauna abundance and water infiltration. Few changes were noted for maize biomass production and maize cop yield. Soil chemical parameters showed contrasting, site-specific results. Compost and biochar amendments increased soil organic carbon, pH, total K and N, P and K availability especially for sandy soils in Thailand. The combination of both amendments could reduce nutrient availability as compared to compost only treatments. Physical and biological parameters showed no treatment response. We conclude that the addition of compost, biochar and their mixture to tropical soils have site-specific short-term effects on chemical soil parameters. Their short-term effect on plants is thus mainly related to nutrient input. The site-dependent results despite similar crops, fertilization and irrigation practices suggest that inherent soil parameters and optimization of organic amendment application to specific pedoclimatic conditions need future attention.

scholarly journals Applicability of the Mehlich-3 method for the site-specific soil nutrient management in Northern Mozambique

2018 ◽  
Vol 9 (9) ◽  
pp. 138-146
Author(s):  
Fukuda Monrawee ◽  
Nakamura Satoshi ◽  
Nasukawa Hisashi ◽  
Naruo Kazuhiro ◽  
M. Ibraimo Momade ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Soil Nutrient ◽  
Site Specific

scholarly journals Site-specific Nutrient Management for Enhancing Crop Productivity

2020 ◽  
pp. 17-25
Author(s):  
Ramesh Chand Bana ◽  
S. S. Yadav ◽  
A. C. Shivran ◽  
Prabhoo Singh ◽  
Vinod Kumar Kudi
Keyword(s):  
Nutrient Management ◽  
Supply And Demand ◽  
Nutrient Use Efficiency ◽  
Simulation Models ◽  
Nutrient Status ◽  
Crop Productivity ◽  
High Price ◽  
Nitrification Inhibitors ◽  
Management Tools ◽  
Site Specific

Nutrient management plays a crucial role in achieving self-sufficiency in food grain production. High price index of chemical fertilizers coupled with mount pollution problem gave rise to interest in precision nutrient management tools. Site specific nutrient management (SSNM) increases and maintains the yield by optimizing the balance between supply and demand of nutrients. Nutrient application as per SSNM concept resulted in significantly higher grain yields of maize, rice, wheat and other important crop over recommended dose of fertilizers (RDF) and farmer’s fertilizers practices. The SSNM is real time feeding of crops with nutrients while recognizing the inherent spatial variability which enhances crop productivity, nutrient use efficiency (NUE) and avoids nutrient wastage. For effective SSNM, utilization of different sensing devices of soil and plant nutrient status, decision support systems, GIS, remote sensing, simulation models and nenoparticles play an important role. Traditional techniques like balanced fertilization, use of nitrification inhibitors and slow-release nitrogenous fertilizers (SRNF) are also used to attain higher productivity and reduce environmental pollution. This paper deals with the SSNM approaches which are able to enhance crop productivity, NUE and sustainability.

Empowering Farmer Leaders to Acquire and Practice Site-Specific Nutrient Management Technology

2007 ◽  
Vol 30 (1) ◽  
pp. 87-104 ◽  
Author(s):  
Tasnee Attanandana ◽  
Russell Yost ◽  
Prateep Verapattananirund
Keyword(s):  
Nutrient Management ◽  
Site Specific ◽  
Management Technology
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