Download or read book Risk Assessment of Sunflower Production Using In Field Rainwater Harvesting on Semi Arid Ecotope in South Africa written by Jestinos Mzezewa and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Risk assessment of sunflower production was carried out using an empirical model. The crop yield prediction for semi-arid areas (CYP-SA) was used to simulate sunflower yield using 26¬†years (1984,Äì2010) climatic data. Scenarios of crop yield simulation included production techniques associated with in-field rainwater harvesting (IRWH), and conventional tillage (CT). IRWH is a no-till (NT) crop production practice that promotes runoff from a crusted runoff strip into basins where water infiltrates beyond evaporation. The study focused on the effect of initial soil water content at planting viz. empty profile (water content near the lower limit of plant available water (LL)); half profile (water content between LL and the drained upper limit (DUL)); full profile (water content near DUL) and planting dates (November, December and January). Yield difference at 80% probability was 74% higher under IRWH compared to CT with empty initial soil water content at planting. Results indicated that IRWH is more sustainable compared to the CT.
Download or read book Sustainable Crop Production written by Mirza Hasanuzzaman and published by BoD – Books on Demand. This book was released on 2020-06-17 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes twenty-one comprehensive chapters addressing various soil and crop management issues, including modern techniques in enhancing crop production in the era of climate change. There are a few case studies and experimental evidence about these production systems in specific locations. Particular focus is provided on the state-of-the-art of biotechnology, nanotechnology, and precision agriculture, as well as many other recent approaches in ensuring sustainable crop production. This book is useful for undergraduate and graduate students, teachers, and researchers, particularly in the fields of crop science, soil science, and agronomy.
Download or read book Crop Production Technologies written by Peeyush Sharma and published by IntechOpen. This book was released on 2012-01-05 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crop production depends on the successful implementation of the soil, water, and nutrient management technologies. Food production by the year 2020 needs to be increased by 50 percent more than the present levels to satisfy the needs of around 8 billion people. Much of the increase would have to come from intensification of agricultural production. Importance of wise usage of water, nutrient management, and tillage in the agricultural sector for sustaining agricultural growth and slowing down environmental degradation calls for urgent attention of researchers, planners, and policy makers. Crop models enable researchers to promptly speculate on the long-term consequences of changes in agricultural practices. In addition, cropping systems, under different conditions, are making it possible to identify the adaptations required to respond to changes. This book adopts an interdisciplinary approach and contributes to this new vision. Leading authors analyze topics related to crop production technologies. The efforts have been made to keep the language as simple as possible, keeping in mind the readers of different language origins. The emphasis has been on general descriptions and principles of each topic, technical details, original research work, and modeling aspects. However, the comprehensive journal references in each area should enable the reader to pursue further studies of special interest. The subject has been presented through fifteen chapters to clearly specify different topics for convenience of the readers.
Download or read book Proceedings written by and published by . This book was released on 1982 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morphological differences between high and low yielding hybrids of sunflower; A study of the morphological characters of sunflower achenes in relation to their emergence under adverse conditions; The effects of ethephon on dormant seeds of cultivated sunflower (Helianthus annuus L.); Pathways of yields elaboration in sunflower under various water stresses; The behaviour of some sunflower genotypes (Helianthus annuus L.) under various flooding regimes; Tolerance of sunflower hybrids to competition among plants; Growth analysis irrigated sunflower at two plant populations; Estimation of leaf area on sunflower plants; Photosynthesis in sunflower leaves: RUBP carboxylates properties activities and quantitative determination; Effects of defoliation during seed filling of sunflower plants; Evolution for biosynthesis during the cycle of development of sunflower, and assimilates partition among organs and constituents; The sunflower roots activity in the field; Effect of daylength in the time of inflorescence initiation and rate of post-initiation development in two early sunflower cultivars; Yield and harvest index of sunflower cultivars: influence of duration and water stress; Determination of physiological nad harvest maturity in sunflower; Effect of physiological maturation on quantitative characters of sunflower varieties and hybrids; Growth and development of sunflower in a semi-arid environment; Determination of regional strategies for sunflower production; Effect of early spring planting of sunflower on yield in Iraq; Oil content oi oilseed sunflower (Helianthus annuu L.) hybrids grown in Texas, USA; Effect of the planting date of sunflowers on the agronomic characteristics and on the quantity and quality of oil; A technique for selecting sunflower genotypes with temperature-stable linoleic acid synthesis; Water requirement of sunflower in a semi-arid environment; Effect of irrigation on water use pattern in sunflower root zone; Influence of plant population on phasic development, growth, yield and water use of irrigated sunflower in a semi-arid environment; The response of sunflower to strategies of irrigation; Salinity and sunflower agronomy in Egypt; Effect of sodium chloride on the lipid composition of sunflower oil; Nitrogen nutrition of sunflower with special reference to nitrogen stress; Effect of nutritional and cultural treatments on seed production on winter grown sunflower; The response of irrigated sunflower cultivars to nitrogen fertilizer; Studies of the uptake of soil and fertilizer nitrogen by sunflower using 15-N techniques; Interactions between moisture supply, N and P, in the performance of an open-pollinated and a hybrid sunflower variety in a semi-arid environment; Differential response to two sunflower cultivars to boron fertilization; Effect of phosphorus and nitrogen fertilization levels on the yield and oil content of sunflower (Helianthus annuus L.); Pollination studies in hybrid sunflower seed production; Sunflower hollow seededness and nitrogen fertilization in relation to harvest time; Effect of achene (seed) size on subsequent growth and development of hybrid sunflower (Helianthus annuus L.); Behaviour of NS sunflower hybrids harvested at different seed moistures; Evaluation of losses in the harvesting of sunflower; Maturity and seed quality in sunflower: physiobiochemical assessment through accelerated ageing; Irrigated sunflower production from the red-brown soils of Northern Victoria; Irrigated sunflower in the Ord River Valley; Potential for pest management in sunflowers in Australia; Insect and mite pests of Queensland sunflowers; Seasonal abundance of the Rutherglen bug (Nysius vinitor) on sunflowers and weeds in N.E. Victoria; Effect of moisture stress on damage to sunflowers by Rutherglen bug (Nysius vinitor); Sunflower seed yield as influenced by pollination and insect pests; Effect6 of maldison (malathion) ULV) on sunfloer insects; Phytomelanin: development and role in hybrid resistance of Homoeosoma electellum larvae (Lepidoptera: Pyrallidae); The control of alternaria blight of sunflowers in Eastern Australia; Some factors affecting the incidence and importance of sunflower rust in Australia; Investigations into increased rust (Puccinia helianthi) intensity on some hybrid sunflower cultivars grown in Queensland; Occurrence of sunflower diseases in Portugal in the last four years (1978 - 1981); White blister and petiole blight of sunflowers caused by Albugo tragopogonis; Stemphylium sp. the agent of reddish-brown spot on sunflowers stem; Further studies on the sunflower disease caused by Diaporthe (Phomopsis) helianthi and possibilities of breeding for resistance; A leaf spot disease of sunflower caused by Septoria sp.; The distribution, and incidence of charcoal rot of sunflower in Eastern Australia; Effect os stand density on the occurrence of charcoal rot and oil yield of some sunflower hybrids; Methods of studying the reaction of some cultivars and wild species of sunflower to infection by Sclerotinia sclerotiorum (Lib) de Bary; Field inoculation of sunflower for Sclerotinia sclerotiorum basal stalk rot and virulence of isolates from various hosts; Coniothyrium minitans as a treatment for sclerotinia wilt of sunflowers; The use of high frequency microwaves on sclerotia to control inoculum of Sclerotinia sclerotiorum; Use of the enzyme-linked immunosorbest assay (Elisa) for the detection of downy mildew (Plasmopara halstedii) in sunflower; Resistance to a new race of sunflower downy mildew; A new race of Verticillium dahliae; Models for potential status of infection: some aspects of the functioning of the climate x plant x pest system; Models for potential status of infection: application to sunflower-botrytis; A model for the development of grey mould (Botrytis cinerea) in sunflower heads; Losses caused in sunflowers by birds in Hungary; Pest status of parrot species on sunflowers in northern N.S.W.; An innovation in the control of galahs, Cacatua roseicapilla, and sulphur-crested cockatoos, Cacatua galerita, in sunflower; The economics of chemical dessication and mechanical drying as methods of reducing bird damage in sunflower; Very early combine harvesting of sunflower to avoid bird depredation; Allelopathic activity of cultivated sunflowers; Post-emergence weed control in sunflower; Information concerning the effect of cultivation as a complement for weed control; Utilization of wild Helianthus annuus in germplasm development; Cluster analysis of wild Helianthus annuus accessions; Variability on oil content in seed pf Helianthus spp.; Variation in oil and quality of wild annual sunflower (Helianthus annuus L.) populations in a uniform environment; Variability in the composition of higher fatty acids in oil of sunflower inbreds with different oil contents in seed; Variability in protein and amino acid contents in different sunflower inbreds; Investigations into seedset in sunflowers; Effect of isolation bags on seedset in sunflowers; Effect of stigmatic manipulation of pollination and seedset in sunflowers; The inheritance of drought tolerance in sunflower; Inheritance of plant height and leaf number in diallel crossing of sunflower inbreds; Inheritance of trichome characteristics in sunflower, Helianthus spp.; Genetic implications in transfering fertility restorer genes to a new genetic background in sunflower Helianthus annuus L.); Correlations for important agronomic characters between parent lines and F1 hybrids of sunflower; Relationships among traits of inbreds and hybrids of sunflower; Maternal and embryo effects on the oleic and linoleic acid contents of sunflower oil; Maternal and paternal effects on the oil content of cypsela in F1 seed; Genetic effect of days to flowering in sunflower (Helianthus annuus L.) under short day regimes; Epistatic gene action in sunflower - a caution to sunflower geneticists and breeders; Use of multivariate techniques in a breeding programme to assit selection of sunflower inbreds and hybrids; Stratified masal selection on sunflower as breeding method for synthetic varieties for forage or grain; Selection of sunflower plants containing high linoleic acid and its agronomic significance; Selection in sunflowers for resistance to Rutherglen bug (Nysius vinitor); Chemically induced mutations in sunflower; Genetic advances by mass selection in the oil percentage of sunflower (Helianthus annuus L.); Performance of early maturing hybrids in Manitoba, Canada; Sunflower variety evaluation, Coonabarabran, NSW, Australia; Evaluation of sunflower hybrids in international trial plantings; Plant breeder's rights and varieties registration in France; An objective description of sunflower for varietal registration, plant variety protection and other purposes; Oil quality analyser; TBHQ in sunflower oil; Utilization of sunflower oil in making plastic fat products for edible uses by miscella interesterification process; Plant oils as a fuel for diesel engines: experiences with sunflower oil; Energy farming update: the bio-oil option?; Lysine availabity in sunflower meals for pigs and chiks; What will the market place expect from sunflower?.
Download or read book Effect of Conservation Farming Practices on the Run off from a Semi arid Catchment written by South Africa. Department of Water Affairs. Division of Hydrological Research and published by . This book was released on 1959 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rainwater Harvesting and Conservation RWH C for Cropland and Rangeland Productivity in Communal Semi arid Areas of South Africa written by Johann Botha and published by . This book was released on 2014 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines on Best Management Practices for Rainwater Harvesting and Conservation RWH C for Cropland and Rangeland Productivity in Communal Semi arid Areas of South Africa written by B. Grant and published by . This book was released on 2014 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines on Best Management Practices for Rainwater Harvesting and Conservation RWH C for Cropland and Rangeland Productivity in Communal Semi arid Areas of South Africa written by Johann Botha and published by . This book was released on 2014 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sunflower written by South Africa. Department of Agricultural Technical Services and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drinking Water Supply in Southern Africa with a Risk Assessment Perspective written by and published by . This book was released on 2008 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On farm Application of In field Rainwater Harvesting Techniques on Small Plots in the Central Region of South Africa Extension manual written by J. J. Botha and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rainfed Farming Systems written by Philip Tow and published by Springer Science & Business Media. This book was released on 2011-09-16 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt: While a good grasp of the many separate aspects of agriculture is important, it is equally essential for all those involved in agriculture to understand the functioning of the farming system as a whole and how it can be best managed. It is necessary to re-assess and understand rain-fed farming systems around the world and to find ways to improve the selection, design and operation of such systems for long term productivity, profitability and sustainability. The components of the system must operate together efficiently; yet many of the relationships and interactions are not clearly understood. Appreciation of these matters and how they are affected by external influences or inputs are important for decision making and for achieving desirable outcomes for the farm as a whole. This book analyses common rain-fed farming systems and defines the principles and practices important to their effective functioning and management.
Download or read book Drought in Arid and Semi Arid Regions written by Kurt Schwabe and published by Springer Science & Business Media. This book was released on 2013-07-08 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering a cross-country examination and comparison of drought awareness and experience, this book shows how scientists, water managers, and policy makers approach drought and water scarcity in arid and semi-arid regions of Spain, Mexico, Australia, South Africa and the United States.
Download or read book Multifunctional Land Use written by Ülo Mander and published by Springer Science & Business Media. This book was released on 2007-05-11 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a major contribution to the debate on future land development strategies, as well as helping to supporting land use decision making at all levels. Scientists from across Europe installed the Landscape Tomorrow network to prepare for upcoming challenges in research on sustainable land development. The book’s interdisciplinary perspective analyses, among other things, the general principles of land use multifunctionality and reports on a variety of success stories.
Download or read book Biofuel Production Technologies Critical Analysis for Sustainability written by Neha Srivastava and published by Springer Nature. This book was released on 2020-03-23 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Production and utilization of sustainable energy toward maintaining a clean environment is a major challenge. At the same time, the continued depletion of fossil fuels and the global dependency on non-renewable fuels is a chief concern. Moreover, the long-term economic and environmental issues associated with the high utilization of fossil fuel, such as global warming, are also important, particularly in the context of the predicted increase in the global population to around 5 billion by 2050. In recent years, researchers have been investigating alternative, renewable fuels to replace fossil fuels. Of the various options, biofuels are especially attractive due to their low production costs and the fact that they are pollution free. Also known as transportation fuels, their energy is derived from biological resources or through the biological processes. Biofuels such as biohydrogen, biomethane, biogas, ethanol and butanol offer a number of advantages and can be economically produced from cellulosic biomass. As such, they can play a vital role in sustainably meeting future energy demands. Biofuels have the potential to become a global primary energy source, offering significant reductions in greenhouse gas emissions as well as opportunities to increase economic and social development in rural communities and reduce the problems associated with waste disposal. However, low yields and lack of process technology are some of the aspects that need to be addressed. This book offers an overview of existing biofuels and the technologies to solve the problems associated with their practical implementation. Evaluating the biofuel options and discussing the opportunities and risks in relation to resources, technologies, practices, markets and policy, it provides insights into the development of economically viable bioenergy industries.
Download or read book Sustainable Bioresource Management written by Ratikanta Maiti and published by CRC Press. This book was released on 2020-04-21 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new volume emphasizes the drastic quantitative and qualitative transformation of our surrounding environment and looks at bioresource management and the tools needed to manageenvironmental stresses. This unique compilation and interpretation of concrete scientific ventures undertaken by environmental specialists at the global level explores research dedicated to the management of natural resources by controlling biotic and abiotic factors that make the earth vulnerable to these stresses. The chapter authors look at all types of bioresources on earth and their management at times of stress/crisis, focusing on the need for documentation, validation, and recovery of ethnic indigenous knowledge and practices that could have great impact in stress management. The book looks at topics in nature and changing climate management, adaptation, and mitigation, such as the effects of climate change on agriculture and horticulture, on timber harvesting, and on forest resources. Also specifically discussed are crop resources management, seed crops, tree seedlings, soil management, and conservation practices. The volume also includes chapters on animal resources management.
Download or read book Agroecology and the Search for a Truly Sustainable Agriculture written by Miguel A. Altieri and published by . This book was released on 2005 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
