Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Water And Nitrogen Effects On Leaf Senescence In Maize Zea Mays L full books in PDF, epub, and Kindle. Read online Water And Nitrogen Effects On Leaf Senescence In Maize Zea Mays L ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : David Walter Wolfe
Publisher :
ISBN 13 :
Total Pages : 326 pages
Book Rating : 4.:/5 (19 download)
Download or read book Water and Nitrogen Effects on Leaf Senescence in Maize (Zea Mays, L.). written by David Walter Wolfe and published by . This book was released on 1984 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ondino C. Bataglia
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.:/5 (14 download)
Download or read book Effects of Nitrogen-water Relations on Maize Productivity written by Ondino C. Bataglia and published by . This book was released on 1980 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nazma Begum
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (254 download)
Download or read book Genotypic Differences in Nitrogen Use Efficiency in Maize (Zea Mais L.) in Relation to Leaf Senescence written by Nazma Begum and published by . This book was released on 2004 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. Bänzinger
Publisher : CIMMYT
ISBN 13 : 9706480463
Total Pages : 69 pages
Book Rating : 4.7/5 (64 download)
Download or read book Breeding for drought and nitrogen stress tolerance in maize: From theory to practice written by M. Bänzinger and published by CIMMYT. This book was released on 2000 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction - why breed for drought and low N tolerance?; Conceptual framework - breeding; Conventional approaches to improving the drought and low N tolerance of maize; Conventional approaches challenged; The challenge of breeding for drought and low N tolerance; Maize under drought and low N stress; Conceptual framework - physiology; Water and the maize plant; Nitrogen and the maize plant; Maize under drought and low N stress - consequences for breeding; Stress management; Drought; Low N stress; Statistical designs and layout of experiments; Increasing the number of replicates; Improved statistical designs; Field layout; Border effects from alleys; Secondary traits; Why use secondary traits?; How do we decide on the value of secondary traits in a drought or low N breeding program?; Secondary traits that help to identify drought tolerance; Secondary traits that help to identify low N tolerance: Selection indices - Combining information on secondary traits with grain yield; Combining information from various experiments; Breeding strategies; Choice of germplasm; Breeding schemes; Biotechnology: potential and constraints for improving drought and low N tolerance; The role of the farmer in selection; What is farmer participatory research and why is it important?; What is new about farmer participatory research?; Participatory methodologies.
Author : Jiban Shrestha
Publisher : Universal-Publishers
ISBN 13 : 1612334407
Total Pages : 133 pages
Book Rating : 4.6/5 (123 download)
Download or read book Growth and Productivity of Winter Maize (Zea mays L.) Under Different Levels of Nitrogen and Plant Population written by Jiban Shrestha and published by Universal-Publishers. This book was released on 2015-09-29 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: A field experiment was conducted at farmer’s field of Anandapur, Mangalpur VDC-3, Chitwan, Nepal during winter season from September 2006 to February 2007 to study the effects of nitrogen and plant population on maize. Fifteen treatment combinations consisting of five levels of nitrogen: 0, 50, 100, 150 and 200 kg N/ha and three levels of plant population; 55555 plants/ha (60 cm × 30 cm spacing), 66666 plants/ha (60 cm × 25 cm spacing) and 83333 plants/ha (60 cm × 20 cm spacing) were tested in factorial randomized complete block design (RCBD) with 3 replications. “Rampur Composite” variety of maize was planted on sandy silt loam and strongly acidic soil having medium in total nitrogen (0.123%), high in soil available phosphorous (77.56 kg/ha) and low in soil available potassium (23.25 kg/ha). The research findings revealed that each level of nitrogen significantly increased grain yield upto 200 kg N/ha. The grain yield (6514.48 kg/ha) obtained under 200 kg N/ha was significantly higher than that of 0, 50, 100 and 150 kg N/ha. The percent increment in yield due to application of 50, 100, 150 and 200 kg N/ha was to the extent of 62.11, 104.74, 135.68 and 154.74%, respectively over control. Significant effect on grain yield due to different levels of plant population was observed. The grain yield (5113.46 kg/ha) obtained under 66666 plants/ha was statistically at par with that under 83333 plants/ha, but significantly superior over that under 55555 plants/ha. The interaction between different nitrogen levels and plant densities on grain yield showed that the highest grain yield (6925.79 kg/ha) was obtained under treatment of 200 kg N/ha + 66666 plants/ha. The yield attributes namely number of cobs/plant, cob length, cob diameter, number of grain rows/cob and 1000 seed weight significantly increased with increasing N levels and decreasing plant population levels. The number of barren plants/ha decreased with increasing levels of N but increased with increasing levels of plant population. The net return (Rs. 42188.74/ha) and benefit:cost ratio (1.67) obtained under 200 kg N/ha were significantly highest than that obtained under other levels of nitrogen (150, 100, 50 and 0 kg N/ha). The plant population of 66666 plants/ha gave the highest net returns (Rs. 25812.28) which was 10.19 and 49.64% higher than that of 83333 plants/ha and 55555 plants/ha, respectively. The benefit: cost ratio (1.44) obtained under 66666 plants/ha was significantly higher than that of 55555 and 83333 plants/ha. The interaction between different nitrogen levels and plant densities on economics of maize production showed that significantly highest net return (Rs.48606.98) and B:C ratio (1.78) were under treatment of 200 kg N/ha + 66666 plants/ha. The highest grain yield and maximum profit were obtained when maize variety “Rampur Composite” was planted with 200 kg N/ha and plant population level of 66666 plants/ha (60 cm × 25 cm spacing).
Author : Muhammad Aslam
Publisher : Springer
ISBN 13 : 3319254421
Total Pages : 79 pages
Book Rating : 4.3/5 (192 download)
Download or read book Drought Stress in Maize (Zea mays L.) written by Muhammad Aslam and published by Springer. This book was released on 2015-11-20 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on early germination, one of maize germplasm most important strategies for adapting to drought-induced stress. Some genotypes have the ability to adapt by either reducing water losses or by increasing water uptake. Drought tolerance is also an adaptive strategy that enables crop plants to maintain their normal physiological processes and deliver higher economical yield despite drought stress. Several processes are involved in conferring drought tolerance in maize: the accumulation of osmolytes or antioxidants, plant growth regulators, stress proteins and water channel proteins, transcription factors and signal transduction pathways. Drought is one of the most detrimental forms of abiotic stress around the world and seriously limits the productivity of agricultural crops. Maize, one of the leading cereal crops in the world, is sensitive to drought stress. Maize harvests are affected by drought stress at different growth stages in different regions. Numerous events in the life of maize crops can be affected by drought stress: germination potential, seedling growth, seedling stand establishment, overall growth and development, pollen and silk development, anthesis silking interval, pollination, and embryo, endosperm and kernel development. Though every maize genotype has the ability to avoid or withstand drought stress, there is a concrete need to improve the level of adaptability to drought stress to address the global issue of food security. The most common biological strategies for improving drought stress resistance include screening available maize germplasm for drought tolerance, conventional breeding strategies, and marker-assisted and genomic-assisted breeding and development of transgenic maize. As a comprehensive understanding of the effects of drought stress, adaptive strategies and potential breeding tools is the prerequisite for any sound breeding plan, this brief addresses these aspects.
Author : Edmundo Acevedo Hinojosa
Publisher :
ISBN 13 :
Total Pages : 534 pages
Book Rating : 4.:/5 (31 download)
Download or read book The Growth of Maize (Zea Mays L.) Under Field Conditions as Affected by Its Water Relations written by Edmundo Acevedo Hinojosa and published by . This book was released on 1975 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of growth of maize in relation to water in the soil-plant system was conducted in the field at Davis, California. The time course of root and aerial growth, and water uptake was investigated under conditions of a mild prolonged water stress, with emphasis of defining the soil and crop water status, photosynthesis and the generation of the yield and yield components also were studied. Hybrid maize was grown in deep alluvial soil with high mositure holding capacity. Three irrigation treatment were: a) Weekly 5-cm irrigation starting 21 days after planting (I treatment); b) No irrigation (NI treatment); c) Weekly 5-cm irrigation starting 55 days after planting (155 treatment). Shoot growth. NI treatment, compared to I treatment, reduced crop height 6.5% leaf area 11% although leaf y (water potential) generally was only 2 bars lower at midday during vegetative growth. Diunally, leaf elongation rate (in both treatment) was unespectedly fastest in early afternoon when leaf y was near the daily minimum. Leaf (solute potential) changes lagged behind y so high occurred at near minimum y values, and daytime elongation rates (presumably when temperature was not limiting) correlated with - leaf changes were associated with those of oraganic solutes; soluble leaf carbohydrates changes accounted for 40% of fluctuations. Consistently lower leaf elongation rates in NI treatment could m-not be explained by differences alone, however. Root growth water absorption. Water uptake at various soil depth and times (...).
Author : Anand Singh Bangarwa
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (652 download)
Download or read book Effect of Levels and Scheduling of Nitrogen on the Growth, Yield and Nutrient Uptake of Winter Maize (Zea Mays L.) Under Different Plant Densities written by Anand Singh Bangarwa and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. Rifin
Publisher :
ISBN 13 :
Total Pages : 183 pages
Book Rating : 4.:/5 (79 download)
Download or read book Growth and Yield of Maize (Zea Mays L.) Under Various Mulching, Nitrogen Application and Soil Moisture Regimes written by A. Rifin and published by . This book was released on 1988 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study was conducted from February to September 1987 at the Central Experimental Station, UPLB (a) to evaluate the efficacy of rice straw and maize stover mulch in optimizing growth and yield of maize, (b) to determine the effect of nitrogen fertilization under simulated dry-land farming on maize production, and (c) to measure the residual effect of mulch and nitrogen using maize, mungbean and cowpea as the test crops. Nitrogen and mulch application, but not irrigation, significantly affect most of the parameters in this study. Nitrogen application increased plant height, crop growth rate, leaf area index, nutrient uptake, grain yield and dry matter production. It lowered leaf area ratio and barrenness of maize ears and induced early silking in maize. As aresult of luxuriant growth, nitrogen application helped reduce the maximum soil temperature and increased the water utilization by maize plants. Rice straw was a better mulching materials than maize stover. Mulch, particularly rice straw, improved IDM accumulation, plant heit, leaf developement, grain yield and nitrogen uptake. The effectiveness of rice mulch in conserving soil moisture and maintaining a low maximum soil temperature especially when soil moisture became low was observed. Residual of nitrogen application and mulching treatment were detected but the response depend on the test crop species used. The most clear-cut case was observed with mungbean, where residual mulching effect resulted in a two-fold increase in bean yield. The residual (...).
Author : Felizardo Amparano
Publisher :
ISBN 13 :
Total Pages : 250 pages
Book Rating : 4.:/5 (13 download)
Download or read book Comparative Effects of N and S Nutrition on a Normal Maize (Zea Mays L.) Genotype and Its Opaque-2 Counterpart written by Felizardo Amparano and published by . This book was released on 1978 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohammad Athar
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (29 download)
Download or read book Influence of Nitrogen Fertilizer and Plant Density on Some Physiological Aspects and Grain Yield of Maize (Zea Mays L.) written by Mohammad Athar and published by . This book was released on 1978 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Divya Jain
Publisher :
ISBN 13 : 9783346280923
Total Pages : 52 pages
Book Rating : 4.2/5 (89 download)
Download or read book The Growth and Yield of Zea Mays. Effects of an Integrated Nutrient Management written by Divya Jain and published by . This book was released on 2020-09-05 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2018 in the subject Agrarian Studies, grade: 8.5, course: Agronomy, language: English, abstract: The aim of this study is to study the effect of integrated nutrient management on the growth and yield of kharif Maize and to work out the economics of different nutrient management treatments. As the chemical's fertilizers play an important role in plants life so that these chemicals should not be avoided completely as they are the potential sources of the high amount of nutrients in easily available forms. These fertilizers greatly affect enzymatic activities in the soil profile but poor management of the chemical fertilizers has a key role in lowering the yield productivity and deteriorate the soil health also. So, to achieve optimum crop production, there is a need to use the combination of organic sources, inorganic sources, bio-fertilizers. Maize (Zea mays L.) requires the nutrients i.e., macronutrients as well as micronutrients for obtaining the higher crop growth and yield. The micronutrients content in organic manure may be sufficient to meet the crop requirement but the low soil fertility is the major problem to maintain sustainability in production. The application of organic manure do not produce optimum yield due to low nutrient status but they play a direct role in plant growth by the mineralization they provide the essential nutrients which furthermore improves the physical and biological properties of the soil. The use of organic plays an important role in maintaining soil health due to the build-up of soil organic matter, beneficial microbes. "Biofertilizer" is a substance that contains living organisms. It promotes growth by increasing the supply or availability of primary nutrients to the host plant. These are not fertilizers because fertilizers directly increase soil fertility by adding nutrients. They add nutrients through the natural processes of fixing atmospheric nitrogen, solubilizing phosphorus, and stimulating
Author : Errol Ross Thom
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (155 download)
Download or read book Effects of Nitrogen Fertiliser on the Growth, Development and Yield of Maize (Zea Mays L.) written by Errol Ross Thom and published by . This book was released on 1974 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shah Fahad
Publisher : BoD – Books on Demand
ISBN 13 : 1838810552
Total Pages : 496 pages
Book Rating : 4.8/5 (388 download)
Download or read book Abiotic Stress in Plants written by Shah Fahad and published by BoD – Books on Demand. This book was released on 2021-07-21 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental insults such as extremes of temperature, extremes of water status, and deteriorating soil conditions pose major threats to agriculture and food security. Employing contemporary tools and techniques from all branches of science, attempts are being made worldwide to understand how plants respond to abiotic stresses with the aim to manipulate plant performance that is better suited to withstand these stresses. This book searches for possible answers to several basic questions related to plant responses towards abiotic stresses. Synthesizing developments in plant stress biology, the book offers strategies that can be used in breeding, including genomic, molecular, physiological, and biotechnological approaches that have the potential to develop resilient plants and improve crop productivity worldwide.
Author : Noor Rawi Abu Bakar
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (963 download)
Download or read book Effect of Different Sources and Levels of Nitrogen on Growth, Yield and Composition of Maize written by Noor Rawi Abu Bakar and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Obadiah I. Nnoham
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (646 download)
Download or read book Effect of Nitrogen Levels and Soil Moisture Tensions on Growth and Nutrient Composition of Maize (Zea Mays L.). written by Obadiah I. Nnoham and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pierdomenico Perata
Publisher : Frontiers E-books
ISBN 13 : 2889193047
Total Pages : 143 pages
Book Rating : 4.8/5 (891 download)
Download or read book Plant responses to flooding written by Pierdomenico Perata and published by Frontiers E-books. This book was released on 2015-01-05 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:
