Developing Climate Resilient Integrated Soil–Crop Management (Criscm) System for Sustainable Wheat Production in Salt–Affected Agroecosystems: Bridging Yield Gaps and Increasing Farm Profitability

2022 ◽  
Author(s):  
PARVENDER SHEORAN ◽  
Raman Sharma ◽  
Arvind Kumar ◽  
Ranjay K. Singh ◽  
Arijit Barman ◽  
...  
Keyword(s):  
Crop Management ◽  
Wheat Production ◽  
Farm Profitability ◽  
Yield Gaps

The soybean yield gap in Brazil – magnitude, causes and possible solutions for sustainable production

2015 ◽  
Vol 153 (8) ◽  
pp. 1394-1411 ◽  
Author(s):  
P. C. SENTELHAS ◽  
R. BATTISTI ◽  
G. M. S. CÂMARA ◽  
J. R. B. FARIAS ◽  
A. C. HAMPF ◽  
...  
Keyword(s):  
Water Deficit ◽  
Precision Agriculture ◽  
Crop Management ◽  
Sustainable Production ◽  
Biodiesel Production ◽  
Yield Gap ◽  
Soybean Yield ◽  
South Central ◽  
Crop Simulation ◽  
Yield Gaps

SUMMARYBrazil is one of the most important soybean producers in the world. Soybean is a very important crop for the country as it is used for several purposes, from food to biodiesel production. The levels of soybean yield in the different growing regions of the country vary substantially, which results in yield gaps of considerable magnitude. The present study aimed to investigate the soybean yield gaps in Brazil, their magnitude and causes, as well as possible solutions for a more sustainable production. The concepts of yield gaps were reviewed and their values for the soybean crop determined in 15 locations across Brazil. Yield gaps were determined using potential and attainable yields, estimated by a crop simulation model for the main maturity groups of each region, as well as the average actual famers’ yield, obtained from national surveys provided by the Brazilian Government for a period of 32 years (1980–2011). The results showed that the main part of the yield gap was caused by water deficit, followed by sub-optimal crop management. The highest yield gaps caused by water deficit were observed mainly in the south of Brazil, with gaps higher than 1600 kg/ha, whereas the lowest were observed in Tapurah, Jataí, Santana do Araguaia and Uberaba, between 500 and 1050 kg/ha. The yield gaps caused by crop management were mainly concentrated in South-central Brazil. In the soybean locations in the mid-west, north and north-east regions, the yield gap caused by crop management was <500 kg/ha. When evaluating the integrated effects of water deficit and crop management on soybean yield gaps, special attention should be given to Southern Brazil, which has total yield gaps >2000 kg/ha. For reducing the present soybean yield gaps observed in Brazil, several solutions should be adopted by growers, which can be summarized as irrigation, crop rotation and precision agriculture. Improved dissemination of agricultural knowledge and the use of crop simulation models as a tool for improving crop management could further contribute to reduce the Brazilian soybean yield gap.

scholarly journals Factors Responsible for Yield Gap of Wheat at Farmers’ Field in Two Districts of Bangladesh

2013 ◽  
Vol 23 (1-2) ◽  
pp. 91-99 ◽  
Author(s):  
MA Kashem ◽  
MAM Miah ◽  
MA Islam ◽  
PC Roy
Keyword(s):  
Wheat Yield ◽  
Yield Gap ◽  
Sowing Time ◽  
Wheat Varieties ◽  
Wheat Production ◽  
Wheat Field ◽  
Yield Gaps ◽  
Practice Gaps ◽  
Practice Gap ◽  
Late Sowing

The main purpose of the research was to identify factors responsible for yield gap in wheat production. Eighteen (18) experiments were conducted in two major wheat growing districts Rangpur and Dinajpur in two consecutive years. The selected varieties for the conducted research were Prodip, Satabdi and Sourav. All the experiments were established in farmers’ fields providing all recommendations for wheat production. It was observed that yield gap varied with the variety and farmers to farmers and location to location. The overall yield gap of Prodip was the highest (18.43 percent) followed by Sourav (18.15 percent) and Satabdi (17.45 percent). Yield gaps of all the wheat varieties under study were higher in Rangpur site than Dinajpur site. The practice gap was the highest in gypsum application (69 percent) followed by boron (67 percent), sowing time (40 percent). Practice gaps in the application of MoP, TSP and irrigation were almost equal, 40 percent, 37 percent, and 36 percent respectively. Late sowing, non use of dolomite and micro nutrients (zinc and boron) in wheat yield with sub-optimal doses of phosphatic and potash fertilizers were the main reasons for yield gap. Adoption of short duration T. aman variety and optimal doses of chemical fertilizers with micro nutrients in wheat field could minimize this gap to a greater extent. Preventive measures against bird attack after sowing of seeds for optimum plant population would have impact in narrow down this yield gap as well.DOI: http://dx.doi.org/10.3329/pa.v23i1-2.16620Progress. Agric. 23(1 & 2): 91 – 99, 2012

scholarly journals Quantifying yield gaps in wheat production in Russia

2014 ◽  
Vol 9 (8) ◽  
pp. 084017 ◽  
Author(s):  
Florian Schierhorn ◽  
Monireh Faramarzi ◽  
Alexander V Prishchepov ◽  
Friedrich J Koch ◽  
Daniel Müller
Keyword(s):  
Wheat Production ◽  
Yield Gaps

scholarly journals Technical efficiency of wheat farmers and options for minimizing yield gaps in Afghanistan

2017 ◽  
Vol 46 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Srinivas Tavva ◽  
Aden Aw-Hassan ◽  
Javed Rizvi ◽  
Yashpal Singh Saharawat
Keyword(s):  
Technical Efficiency ◽  
Production Systems ◽  
Stochastic Frontier ◽  
Agricultural Practices ◽  
Potential Yield ◽  
Wheat Varieties ◽  
Wheat Production ◽  
Large Yield ◽  
Yield Gaps ◽  
Effective Transfer

Afghanistan is a net importer of wheat which is the staple food in the country. In order to improve the levels of food sufficiency, prevailing large yield gaps in wheat need to be reduced. This study assessed the reasons/factors influencing low wheat productivity and/or large yield gaps in different production systems in five major wheat-producing provinces in Afghanistan using a stochastic frontier production function model. The results indicated that the mean technical efficiency of wheat farmers was 0.67, and there was clear scope to improve wheat production by 33% in the short run with the same level of inputs. The potential yield gap could be reduced if adoption of good agricultural practices such as the use of improved wheat varieties with recommended seed rates was promoted through more effective transfer of technologies (training and extension) in the target provinces. Such efforts would help improve domestic wheat production and reduce dependency on wheat imports.

scholarly journals Rice Yield Gaps in Smallholder Systems of the Kilombero Floodplain in Tanzania

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1135
Author(s):  
Julius Kwesiga ◽  
Kristina Grotelüschen ◽  
Kalimuthu Senthilkumar ◽  
Daniel Neuhoff ◽  
Thomas F. Döring ◽  
...  
Keyword(s):  
Field Experiments ◽  
Farmyard Manure ◽  
Total Yield ◽  
Crop Management ◽  
Nutrient Deficiencies ◽  
Green Manures ◽  
Yield Gap ◽  
Potential Yield ◽  
Mineral N ◽  
Yield Gaps

To meet the growing rice demand in Africa, gaps between actual and attainable yields have to be reduced. In Tanzania, this particularly concerns smallholder rain-fed production systems in the floodplains. After quantifying the existing yield gaps, key contributing factors need to be analyzed to improve site-specific management. Field experiments were conducted for three years and in three pedo-hydrological environments (fringe, middle, and center positions) of the Kilombero floodplain to evaluate: (1) The grain yield under farmers’ management (actual yield), (2) yield with the best-recommended management (attainable yield), and (3) the non-limited yield simulated by the APSIM model (potential yield). In the field, we additionally assessed incremental effects of (1) field bunding and soil levelling, (2 and 3) additionally applying of 60 kg N ha−1, as urea or as farmyard manure (FYM), and (4 and 5) incorporating in-situ-grown leguminous green manures. Attainable yields were determined with mineral N application at 120 kg ha−1, additional PK fertilizer and supplemental irrigation. On average across years and positions, the potential, the attainable, and farmers’ actual yields were 11.5, 8.5, and 2.8 t ha−1 indicating a high total yield gap. About 16–38%, 11–20%, and 28–42% of this gap could be attributed to non-controllable yield-reducing (i.e., pest and diseases), yield-limiting (i.e., water and nutrient deficiencies), and yield-defining factors (i.e., poor soil and crop management), respectively. Results indicate a closure of the exploitable yield gap (differences between attainable and farmers’ actual yields) by up to 6.5 t ha−1 (nearly 60% of the potential yield). This exploitable yield gap was larger in 2016 than in 2017. Also, the gap was larger in the water-limited fringe and middle than in the frequently submerged center positions. Simple field bunds combined with land levelling could close 15–35% of the exploitable yield gap, depending on field positions and year. FYM or green manures were less effective than mineral N; however, in 2017 and in the wetter middle and center positions, they reduced the yield gap by >50%. We conclude that yield gaps in rainfed rice in Kilombero floodplain are large, but that a site- and system-specific adaptation of crop management can close much of the exploitable yield gap and increase grain yields by 0.7–4.8 t ha−1. Similar benefits may be obtained in other hydrologically variable floodplain environments of the region and beyond.

scholarly journals LIMITATIONS AND PROSPECTS FOR SUSTAINABLE INCREAYIELD IN TAJIKISTAN SE OF WHEAT

2020 ◽  
Vol 15 (3) ◽  
pp. 31-36
Author(s):  
Munira Otambekova ◽  
Bahriddin Solihov ◽  
Bahromiddin Husenov ◽  
Hafiz Mumindzhanov
Keyword(s):  
Environmental Sustainability ◽  
Crop Production ◽  
Management Practices ◽  
Social Economic ◽  
Wheat Yield ◽  
Crop Management ◽  
Human Consumption ◽  
Clear Understanding ◽  
Wheat Varieties ◽  
Wheat Production

Wheat is a major crop with a key role for food security in Tajikistan. A clear understanding of the major constraints and opportunities relating to wheat production and sustainability in farmers’ fields is therefore required. Monitoring of pests, diseases and weeds in the wheat fields of different sizes, located in different agricultural zones in Tajikistan and at different altitudes, was conducted during (2003–2016). A questionnaire on wheat production and sustainability, seeking overall information about farms and specific data on crop management practices, was applied. The results showed that the agronomic knowledge of Tajik farmers was generally poor and that wheat yield was low, affecting social, economic, and environmental sustainability. The farms surveyed were generally small, growing winter wheat for human consumption year after year. Seeds were hand-broadcast at the optimal sowing time, without chemical treatments and either wheat or technical crops were used as preceding crops. The low knowledge status of wheat farmers influenced crop performance and were correlated with lack of crop rotation, while the lack of pest management resulted in high levels of weeds and severe insect damage. Wheat production on small farms still relied heavily on manual labor, while larger farms used more machinery. Most of the Tajik wheat varieties and lines screened were found to be susceptible to at least one of the diseases screened for, i.e., stripe rust, leaf rust, and common bunt. Our findings demonstrate a need for concerted action to overcome wheat yield constraints and achieve sustainabшlity in crop production in Tajikistan. Education of farmers appears key to improving social, economic, and environmental sustainability. Use of certified seed of suitable wheat varieties and appropriate crop management practices, including weed control while also taking biodiversity into consideration, are other important measures for increasing wheat yield and improving sustainability

scholarly journals Technical inefficiency of wheat production in some selected areas of Bangladesh

1970 ◽  
Vol 35 (1) ◽  
pp. 101-112 ◽  
Author(s):  
M Kamrul Hasan ◽  
SM Fakhrul Islam
Keyword(s):  
Technical Efficiency ◽  
Production Yield ◽  
Cross Sectional ◽  
Technical Inefficiency ◽  
Wheat Production ◽  
Farm Operators ◽  
Yield Gaps ◽  
Good Potential ◽  
Effect On Yield ◽  
And Training

The main objective of the study was to identify and analyze the inefficiency and yield gaps of wheat production in Bangladesh. The study employed farm level cross sectional data from three major wheat growing areas of Bangladesh. Yield of wheat was found to vary across locations and farm categories. The average technical inefficiency of wheat production in Bangladesh is 16. This indicates a good potential for increasing wheat output by 16 percent with the existing technology and levels of inputs. Education and training on wheat of the farm operators was found to have significant effect on yield and technical efficiency of wheat production. Keywords: Technical inefficiency; wheat production; yield gaps. DOI: 10.3329/bjar.v35i1.5871Bangladesh J. Agril. Res. 35(1) : 101-112, March 2010

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