Author: A. N. YadavPublisher:
ISBN:
Category :
Languages : en
Pages : 101
Book Description
Investigation on Weed Management in Maize (zea Mays L.) Through Intercropping & Chemicals
Author: A. N. YadavIntercropping and Weed Management Practices in Maize
Author: S. N. ShahPublisher: LAP Lambert Academic Publishing
ISBN: 9783847318460
Category : Corn
Languages : en
Pages : 224
Book Description
Maize (Zea mays L.) being native of Mexico is one of the oldest and most productive cereal food crop. It is the third most planted crop after wheat and rice. It is grown throughout the world for human and animal consumption. The Food and Agriculture Organization of the United Nations estimates the demand of maize for human and animal consumption will increase by nearly 300 million tonnes by 2030 which does not include the increase in demand for bio-fuel production. Maize being a rainy season and widely spaced crop gets infested with variety of weeds and subjected to heavy weed competition. Rainy season (kharif) maize suffers heavy yield losses due to weed infestation owing to congenial environmental condition for luxurious weed growth coupled with wider row planting and slow growth at the early stage. Besides chemical and cultural methods of weed management, intercropping of pulses with maize play vital role in reducing weed infestation.
Chemical Weed Management in Maize (Zea Mays L.) Under Conservation Agricultural Systems
Author: Akbar HossainPublisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
Book Description
Maize is a widely grown cereal after rice and wheat and contributes almost 5% to the global dietary supply. In the Eastern Gangetic Plains (EGP) including India, Bangladesh, and Nepal, maize is an emerging cash crop, because of its high yield potentiality and also the favorable climatic conditions which allow maize production round the year. In Bangladesh, area and production of maize are escalating due to the increasing demand for poultry, livestock, and fish feed, and fodder for animals and starch industries in the region. Presently, more than 90% of maize is planted by manual dibbling following 5,Äì6 intensive tillage, which increases the cost of cultivation. The conservation agricultural (CA)-based new agricultural practices could overcome those above challenges. CA is cost-effective and environmentally friendly; however, weeds are one of the key challenges in the system. The chapter described the uses of herbicides in different ways of combinations to make effective weed control in CA-based maize to achieve potential production and profits by reducing the intensive pressure of manual weeding. The efficient and right use of pre-plant/sowing, pre- and post-emergence herbicides and their combination may be the best way for effective control of weeds in maize production.
Improving Weed Management and Crop Productivity in Maize Systems in Zimbabwe
Author: Arnold Bray MashingaidzePublisher:
ISBN:
Category : Corn
Languages : en
Pages : 216
Book Description
Span lang=EN-GB style='mso-ansi-language:EN-GB'It was concluded that cultural weed management techniques that enhance radiation capture by the crop were effective in suppressing weed growth and seed production and increasing crop yields and should be incorporated into smallholder farmer's production practices in a systematic manner as part of Integrated Weed Management and cropping system design.
Ecological Management of Agricultural Weeds
Author: Matt LiebmanPublisher: Cambridge University Press
ISBN: 1139427245
Category : Science
Languages : en
Pages : 546
Book Description
This book presents principles and practices for ecologically based weed management in a wide range of temperate and tropical farming systems. Special attention is given to the evolutionary challenges that weeds pose and the roles that farmers can play in the development of new weed-management strategies.
Maize
Author: Akbar HossainPublisher: BoD – Books on Demand
ISBN: 1838802614
Category : Science
Languages : en
Pages : 158
Book Description
Maize is a staple cereal after wheat and rice. It is an important source of carbohydrate, protein, iron, vitamin B and minerals for many poor people in the world. In developing countries maize is a major source of income in resource-poor farmers. As maize is used both as silage and as crop residue and the grains of maize are usually used for food, starch and oil extraction industrially, the demand for maize is rising day by day. Therefore, it is imperative for improvement of maize to meet the increasing demand. This book entitled "Maize - Production and Use" highlights the importance of maize and the improved management approaches for improving the productivity of maize in the era of changing climate.
Assessment of Weed Control Methods for Maize Production by Emerging Farmers on Commercial Farms
Author: Garikai MaravaPublisher:
ISBN:
Category : Corn
Languages : en
Pages : 188
Book Description
Maize (Zea mays L) is a staple food crop grown in South Africa by both large scale commercial and smallholder farmers. During the 2013/14 cropping season maize occupied about 2.6 million hectares of the total 3.9 million hectares of arable land that was under field crops in South Africa. Maize accounted for about 12.4 million tonnes of the 14.4 million tonnes of all field crops produced. Excessive competition from weeds is a major constraint, reducing maize yield and farmer income. Resource poor and inexperienced emerging farmers who have acquired land through the government land redistribution programmes are particularly affected. To date about 5.7 million hectares of land have been transferred to about 4.2 million black (previously disadvantaged) emerging farmers. Although emerging farmers have several options available for weed control, these still need to be appraised with regards to benefits, in the form of grain yield measured against the cost of weed management. An on-farm study was carried out at two sites in the North West province of South Africa during the 2011/12 and 2013/14 cropping seasons. The objectives were:- ? To determine the effect of different weed control methods on maize yields of emerging farmers at two localities in the North West province. ? To identify the most competitive or problematic weed species at two localities in the North West province. ? To compare the economic benefit of different weed control methods at the two localities. The experiment was laid out in a split-plot randomised block design. A stacked gene (stalk borer and herbicides resistance) and a conventional maize cultivar were planted in strips. Eight weed control methods that included hand-weeding, mechanical, chemical (herbicides) and combinations of these methods were randomly allocated across the strips. Weed species were counted and crop heights were recorded at three and eight weeks after crop emergence (WACE). Weed dry biomass was also determined. Grain yield and the yield components of ear mass and 100 kernels mass were recorded. A cost-benefit analysis of these weed control methods was carried out in the context of total production costs. The highest maize grain yields were obtained, where weed competitive effects were satisfactorily suppressed. The clean field and pre- and post-emergence herbicides methods produced the highest grain yields in the two seasons. In the first season the highest grain yields obtained were 73% higher than the lowest yield in no-weeding method for both cultivars. The second season was characterized by below average and erratic rainfall. The stacked gene cultivar outperformed the conventional cultivar by 63% where weeds were effectively controlled. Weed competition seemed to cancel the superiority of the stacked gene cultivar over the conventional cultivar in a drier season. The cost-benefit analysis revealed that a single cultivation operation at six WACE was the cheapest method, costing only R 495 ha-1 irrespective of the cultivar used. Keeping a clean field throughout the season was the most costly endeavour, at R 2 528 ha-1 and R 2 174 ha-1 for the conventional and the stacked gene cultivar respectively. The use of both pre- and post-emergence herbicides on stacked gene cultivars can provide farmers with a return of up to R 2.60 for every R 1 invested. Controlling weeds in a conventional maize cultivar, using tractor-drawn cultivator at six WACE, can give a return of up to R 1.64 for every R 1 invested. The weed control methods that provide the highest grain yields are not necessarily the most cost effective. It is preliminarily recommended that chemical weed control methods be considered if stacked gene cultivars are to be planted. However, mechanical weed control methods must be considered when planting conventional cultivars. The present study needs to be intensified, covering a wider geographical extent, to cater for variation that can be expected as a result of differences in climate, soil type and weed spectra.
Nitrogen Use Efficiency Through Weed Management Practices in Maize (Zea Mays L.)
Author: KIRAN M. VModern Weed Management
Author: O. P. GuptaPublisher:
ISBN: 9788177542158
Category : Wedds
Languages : en
Pages : 540
Book Description
Manipulation of Allelopathic Crops for Weed Control
Author: Khawar JabranPublisher: Springer
ISBN: 3319531867
Category : Science
Languages : en
Pages : 90
Book Description
This book clearly defines ways to maximize the allelopathic potential of important field crops for controlling weeds, either in the same crop or others. Compared to the use of herbicides, allelopathy is an attractive option to control weeds naturally under field conditions. The book highlights the allelopathic potential of several important cereals (wheat, maize, rice, barley, sorghum, rye) and two oilseed crops [sunflower and canola (as well as some other member of Brassicaceae family)]. Further, the book explains how the allelopathic potential of these crops can be manipulated under field conditions to suppress weeds. This is possible by growing allelopathic crop cultivars, using mulches from allelopathic crops, intercropping an allelopathic crop with a non-allelopathic crop, including allelopathic crops in crop rotation, or using allelopathic crops as cover crops. Equipped with several basic concepts of allelopathy, this book will be highly useful for the farming community as well as students and researchers.