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 Studies on yield stability in autumn wheat species

2001 ◽  
pp. 61-66
Author(s):  
Erika Kutasy ◽  
József Csajbók
Keyword(s):  
Winter Wheat ◽  
Crop Production ◽  
Yield Stability ◽  
Regression Equations ◽  
Wheat Varieties ◽  
Wheat Production ◽  
Yield Level ◽  
Good Productivity ◽  
The Given ◽  
Winter Wheat Varieties

The environmental adaptability of crop production is basically determined by the selection of biological background (plant species and varieties) suitable for the region and the site. The sowing structure adapted to the ecological background increases the yield and decreases the yield fluctuation caused natural effects. Exact long-term trials are essential to develop variety structure of winter wheat production suitable for the given ecological conditions. We have examined the productivity and yield stability of genetically different state registered winter wheat varieties. We have compared the varieties’ yield results in plot trials, at similar agrotechnical conditions, in different cropyears. We have examined the absolute and relative (compared to the mean of varieties) yield of winter wheat varieties. We have valued the yield stability of genotypes with the help of analysis of variance and linear regression equations. We have defined the connection between productivity and yield stability of varieties. We have pointed out the varieties with good productivity and yield stability in given agroecological conditions.According to the results of our examinations the developing of variety structure suitable for the agroecological conditions could increase the potential and effective yield level of wheat production.

Intensive Crop Management Practices on Wheat Yield and Quality

1990 ◽  
Vol 82 (4) ◽  
pp. 701-707 ◽  
Author(s):  
M. A. Mohamed ◽  
J. J. Steiner ◽  
S. D. Wright ◽  
M. S. Bhangoo ◽  
D. E. Millhouse
Keyword(s):  
Management Practices ◽  
Wheat Yield ◽  
Crop Management ◽  
Yield And Quality

scholarly journals Effect of silicon on aphid populations and wheat yield in Minas Gerais, Brazil

2020 ◽  
Vol 41 (6) ◽  
pp. 2481-2494
Author(s):  
Gabriel Fernandes Rezende ◽  
◽  
Marcus Vinicius Sampaio ◽  
Beliza Queiroz Vieira Machado ◽  
Diego Tolentino de Lima ◽  
...  
Keyword(s):  
Yield Components ◽  
Crop Production ◽  
Control Strategies ◽  
Rhopalosiphum Padi ◽  
Wheat Yield ◽  
Aphid Species ◽  
Minas Gerais ◽  
Wheat Production ◽  
Experimental Area ◽  
Aphid Populations

The area cultivated with wheat has been increasing in the savannahs of the state of Minas Gerais, Brazil. Aphids are usually one of the main pests of wheat in many regions of the world; however, little is known about the aphid population in this new environment. The southern region of Brazil, the main wheat production area, has had several problems as a result of aphids, but aphid populations and the resulting impact on wheat production have not been investigated in these new crop production areas. Understanding control strategies to manage this insect could be essential for the “Cerrado” wheat that is grown in this area. The application of silicon (Si) has the potential to reduce the population growth of wheat aphids; however no field studies have been reported. Hence, we evaluated the effect of Si fertilization via soil application on the aphid populations and species composition and on yield components of wheat in three locations in Minas Gerais; the experiment was repeated simultaneously in Uberlândia, at the experimental areas of UFU and IFTM, and in Montes Claros, at the experimental area of UFMG, using the cultivars BRS 264 and BRS 394. The aphids first appeared just before wheat earing; they were then sampled six times over the course of the study, seven days apart, starting from 45 days after sowing. The aphid species Sitobion avenae (Fabricius), Schizaphis graminum (Rondani), and Rhopalosiphum padi (Linnaeus) were observed in all three locations; S. avenae was the dominant species in all locations. The experimental area of UFU had the highest number of S. avenae aphids per tiller for both cultivars, while UFMG had the lowest populations. Aphid populations and wheat yield components were not affected by soil Si fertilization. There was no difference in yield as a result of location or cultivar, but the location UFU and the cultivar BRS 394 had the greatest average hectoliter weight.

Improving Crop Production on Salt-affected Soils: by Breeding or Management?

1995 ◽  
Vol 31 (4) ◽  
pp. 395-408 ◽  
Author(s):  
R. A. Richards
Keyword(s):  
Land Use ◽  
Soil Salinity ◽  
Crop Production ◽  
Management Practices ◽  
Crop Management ◽  
Crop Productivity ◽  
Or Management ◽  
Perennial Vegetation ◽  
Salt Affected Soils ◽  
Irrigation Practices

SUMMARYThe area of salt-affected land is increasing because of irrigation practices and changed land use. Breeding crops that tolerate soil salinity and yield well in salt-affected soils, and employing crop management practices to counter salinity, have been proposed to maintain crop productivity. Here, it is argued that neither breeding nor management will adequately counter the effects of salinity. Although both offer the potential to maintain yields for a brief period, it is inevitable that salinity will continue to increase and crop productivity will decline. Only the establishment of a perennial vegetation that will maintain evapotranspiration at high levels all year round on both salt-affected land and recharge areas will halt the increase in salinization.Mejorar la producción en los suelos afectados por la sal

scholarly journals Tillage Systems Affecting Rice-Wheat Cropping System

2021 ◽  
Vol 50 (6) ◽  
pp. 1543-1562
Author(s):  
Rafi Qamar ◽  
Atique ur Rehman ◽  
Hafiz Muhammad Rashad Javeed ◽  
Abdul Rehman Abdul Rehman ◽  
Muhammad Ehsan Safdar ◽  
...  
Keyword(s):  
South Asia ◽  
Management Practices ◽  
Cropping Systems ◽  
Wheat Yield ◽  
Cropping System ◽  
Zero Tillage ◽  
Tillage Systems ◽  
Wheat Production ◽  
Tillage System ◽  
The Cost

Rice-wheat production is an essential component of cropping systems in the Indus-Ganga Plains (IGP) which play a pivotal role in food security of south Asia. These crops are being cultivated on an area of about 13.5 M ha of South Asia. In rice-wheat cropping system, the major reason for lower wheat grain yield is use of unwise tillage practices during wheat seedbed preparation, cultivation of late maturing rice varieties, water shortage, labor shortage, high cost of fertilizers and poor crop management practices. Resource-conserving technology improves the sustainability and productivity of wheat, which ultimately increase the farmer’s livelihood and reduce poverty. Tillage plays an important role in agricultural operation for soil manipulation to optimize the crop productivity. Different tillage systems are being practiced for wheat production in rice-wheat cropping systems including intensive tillage system, conventional and deep tillage, conservation tillage that consisting of minimum tillage, ridge tillage, and no-till or zero tillage system. Zero tillage gives more accessible and efficient planting system that ensures timely wheat cultivation, cut off the tillage operation, better crop residue management that ultimately minimize the cost of production and keeps environment clean. Operational costs for wheat sowing are 50-60% lower with zero tillage (ZT) sowing than with conventional sowing. The cost saving effect is the main reason for the spread of zero tillage technology in rice-wheat system. Current paper presented a review of different tillage systems and their effects on soil physical properties, plant available water, soil organic matter and nutrients, rice residues, wheat yield and farmer’s economics.

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

Novel crop science to improve yield and resource use efficiency in water-limited agriculture

2010 ◽  
Vol 149 (S1) ◽  
pp. 123-131 ◽  
Author(s):  
W. J. DAVIES ◽  
J. ZHANG ◽  
J. YANG ◽  
I. C. DODD
Keyword(s):  
Drought Stress ◽  
Crop Production ◽  
Management Practices ◽  
Production Systems ◽  
Water Productivity ◽  
Crop Improvement ◽  
Crop Management ◽  
Interdisciplinary Approach ◽  
World Population ◽  
Use Efficiency

SUMMARYGlobally, agriculture accounts for 0·80–0·90 of all freshwater used by humans and, in many crop production systems, this water use is unsustainable. The current paper focuses on the potential exploitation of novel drought stress biology in both crop improvement programmes and via changed crop management practices. The aim is to deliver ‘more crop per drop’. In order to respond to the challenge of feeding a world population of seven billion and growing, it is concluded that an interdisciplinary approach is needed involving new genetic opportunities and plant breeding. It is also shown how crop management can exploit the drought stress physiology of plants to deliver improved water productivity without sacrificing crop yield.

scholarly journals Differences in Aceria tosichella population responses to wheat resistance genes and wheat virus transmission

2019 ◽  
Vol 13 (6) ◽  
pp. 807-818 ◽  
Author(s):  
Luaay Khalaf ◽  
Wen-Po Chuang ◽  
L. M. Aguirre-Rojas ◽  
Peter Klein ◽  
C. Michael Smith
Keyword(s):  
Resistance Gene ◽  
Resistance Genes ◽  
Wheat Yield ◽  
The United States ◽  
High Plains ◽  
Yield Losses ◽  
Wheat Varieties ◽  
Wheat Production ◽  
Wheat Curl Mite ◽  
Aceria Tosichella

Abstract Severe winter wheat yield losses due to infestations of wheat curl mite, Aceria tosichella Keifer, and mite-transmitted viruses occur in wheat production areas of the United States and Canada. Mite infestation alone causes stunted, chlorotic plants in susceptible wheat varieties, and mites transmit Wheat Streak Mosaic (WSMV), High Plains Wheat Mosaic (HPWMoV), and Triticum Mosaic Virus (TriMV). Wheat curl mites were collected from 25 sites in Kansas, Missouri, Nebraska, Texas, North Dakota, and South Dakota in 2014 and 2015. At each site, mite virulence was determined to wheat plants harboring the Cmc2-, Cmc3-, or Cmc4 mite resistance gene; or Cmc4 plus the Wsm2 WSMV resistance gene. Mites collected from 92%, 36%, and 24% of sites were virulent to susceptible Jagger wheat plants (no Cmc), Cmc2, and Cmc3, respectively. The mega-population consisting of all 25 mite sub-populations was avirulent to 80% of plants containing Cmc4 + Wsm2 or Cmc4. WSMV, HPWMoV, or TriMV was present in mites at 76%, 16%, and 8% of the 25 sites, respectively. Our results will enable breeders to increase the efficiency of wheat production by releasing wheat varieties containing wheat curl mite resistance genes that reduce wheat yield losses.

Man's artificial glacier—a way forward toward water harvesting for pre and post sowing irrigation to facilitate early sowing of wheat in cold arid Himalayan deserts of Ladakh

2017 ◽  
Vol 34 (04) ◽  
pp. 363-372
Author(s):  
S. R. Dar ◽  
Chewang Norphel ◽  
Mohd Mehdi Akhoon ◽  
K. A. Zargar ◽  
Nazeer Ahmed ◽  
...  
Keyword(s):  
Short Duration ◽  
Management Practices ◽  
Crop Management ◽  
Water Requirement ◽  
Wheat Crop ◽  
Leeward Side ◽  
Water Harvesting ◽  
Wheat Varieties ◽  
Agronomic Management ◽  
Locally Grown

AbstractUnavailability of irrigation water for early sowing has remained a constant problem in cold arid deserts of Ladakh. In order to get a solution to this problem, a 2-yr farmers’ participatory research trial with best bet agronomic management on artificial glacier water harvesting technology was conducted. The technology involves collecting water from natural glaciers that melt during late December. The water is diverted toward a shed constructed with stone embankments set up at regular intervals. The area is chosen where there is minimum interference of solar radiation, generally between two mountain slopes or ridge that is on the leeward side. The melted water is that melts from the natural glacier impeded by the embankments and get frozen here. This frozen water starts melting in late March and is used for both pre sowing and initial crop water requirement. It also ensures early sowing of wheat by creating additional 45-day window which leads to introduction of long- and medium-duration wheat varieties to replace decades old locally grown short-duration varieties. The work was initiated with a benchmark survey of 100 farmers to get an understanding of present irrigation scenario, crop management practices and date of sowing. Data from 99 farmer participating trial of wheat conducted after or from bench mark survey clearly indicated that the effect of water shortage can be seen on yield and yield attributing characters due to unavailability of pre sowing irrigation and water requirement at imperative growth stages and may also lead to terminal heat stress in wheat crop. Out of total number of irrigations applied, initial two irrigations can be compensated by artificial glacier water harvesting technique, leading to a revolution in the agriculture scenario of the tribal population by introduction of long- and medium-duration wheat varieties in cold arid desert of Ladakh for the very first time. It was observed that wheat seeding done in first fortnight of April gave better yields in comparison to late seeded wheat. Moreover, the long-duration varieties (LDVs) or medium-duration varieties (MDVs) sown under late condition gave better yield in comparison to locally grown short-duration varieties sown at same time. Yield potential of LDVs and MDVs of wheat under late sowing was found quite low in comparison to early-sown wheat, still when compared with the performance of locally grown wheat the yields were more even if the local varieties were sown early. The outcome of this study will help the farmers of tribal, cold arid community in harvesting better wheat yields by timely sowing of the wheat crop accompanied with better bet agronomic management practices. Government initiative is further required to ensure better outreach of complete crop management strategies to the tribal farming community of the region in order to ensure food security and improve their socioeconomic status.

scholarly journals Are intensification and winter wheat yield increase efficient?

2017 ◽  
Vol 63 (No. 9) ◽  
pp. 428-434
Author(s):  
Křen Jan ◽  
Houšť Martin ◽  
Tvarůžek Ludvík ◽  
Jergl Zdeněk
Keyword(s):  
Winter Wheat ◽  
Management Practices ◽  
Management Practice ◽  
Crop Protection ◽  
Wheat Yield ◽  
International Comparisons ◽  
Crop Management ◽  
Optimal Level ◽  
Gross Margin ◽  
Production Factors

The results of small-plot field trials of international comparisons of a series of crop management practices for winter wheat grown during 2014–2016 on fertile soils of Central Moravia were assessed. The objective of the experiments was to obtain the highest gross margin (GM), which is the difference between revenues and direct costs. The analyses showed that an optimal level of inputs and costs for obtaining the highest GM could exist. In the assessed series of crop management practices, the optimum input costs corresponded to 11 000–12 000 CZK/ha and 6–9 input measures. At high levels of grains (above 10 t/ha), higher values of GM were obtained by increased efficiency of inputs, but not by increasing their amount to maximize the yields. This indicates the multifunctional and synergic effects of production factors, which can be used at the so-called ecological intensification. Optimizations of inputs can be obtained rather by crop protection than by crop nutrition, which means rather in protection of high yields than in their maximization. Under field conditions, soil and plant processes affected by weather cannot be controlled. Therefore, optimisation of production factors is based both on scientific findings and practical agronomic experience. That is why a universal crop management practice with increased economic and ecological effects cannot be practically proposed.

Sign in / Sign up

Export Citation Format

Share Document