Download or read book An Irrigation scheduling package for processing tomatoes written by and published by . This book was released on 1991 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drip Irrigation of Processing Tomatoes written by and published by UCANR Publications. This book was released on 2008 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Management of Processing Tomatoes written by Ian Smith and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Scheduling Strategies for Tomato Production in Southwestern Ontario written by Felix Jaria and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Precision irrigation scheduling is critical to improving irrigation efficiency. It is a combined technical and managerial tool that determines accurately when, how much and how often irrigation is applied to meet optimum crop response. This is particularly challenging in humid regions such as Southwestern Ontario, where soil moisture is often influenced by periodic rainfalls. The overarching goal of this three year research project was to investigate different irrigation scheduling strategies for tomato production in Leamingtion, Ontario. There were four specific objectives. The first sought to develop an optimum irrigation schedule for intensive cultivation of processing tomatoes by examining different irrigation trigger levels. Moisture triggers were expressed as a fraction of field capacity and soil tension, which are also related to soil available water content (AWC). Triggers with moisture depletion levels of ≤ 40 % (AWC) produced the higher yields. However, the best yields were obtained from the tension treatment with an upper and lower moisture threshold of -10 kPa and -30 kPa, which represented 20 to 24% depletion in AWC.The second objective sought to develop a robust protocol for implementing an irrigation scheduling. Three different types of soil moisture sensors were evaluated. The tension based senor emerged with the highest evaluation score. However, all three sensors could be used to effect irrigation scheduling. The sensor based irrigation data was subsequently compared with the Peman-Monteith model. It was found that the soil moisture treatments with a moisture depletion level of ≤ 40 % soil available water content (AWC) adequately met crop water requirements throughout the season.The third objective examined the spatio-temporal variability of soil moisture under drip irrigation in a controlled greenhouse environment. The study indicated that soil moisture content was not uniformly distributed prior to or after an irrigation event. For double row planting of tomatoes with a central drip line, a row spacing of 50 cm was adequate for planting of seedlings, due to the higher soil moisture contents within that zone. Further, due to the lack of uniform distribution of moisture in the soil profile, paired sensors (with one either side of the drip line) can provide a better estimate of soil moisture depletion for sensor based irrigation scheduling.The fourth objective investigated the nutrient dynamics along the soil profile over the growing season. Soil nutrients (P and N) were monitored at three different levels of the profile (0 to 30, 30 to 50 and 50 to 70 cm) and at the pre-planting, mid-season and end of season stages. Statistical significance in Olsen P and NO3-N was obtained both across the season and along the profile for each of the three years. The variability among treatments was not significant. The P and N concentrations at the 50 to 70 cm depths were found to be high, with the potential of being leached through the subsurface drainage system. A modification in the application of P and N can help reduce leaching of nutrients below the rooting zone. This would necessitate a split application of P and more frequent application of liquid N in smaller quantities." --
Download or read book Monitoring Soil Moisture for Irrigation Water Management written by Blaine Hanson and published by University of California, Agriculture and Natural Resources. This book was released on 2007 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring soil moisture is an alternate method to water-based balance methods of managing irrigation water. Using this method you can "see" what is going on in the soil and determine answers to some key irrigation management questions: Did enough water infiltrate the soil? Is too much water being applied? What is the water uptake pattern of the roots? When should irrigation take place? What was the depth reached by the irrigation? Includes 24 figures and 7 tables, metric conversions, and an appendix of typical root depths. One of a series of water management handbooks prepared by the UC Irrigation Program.
Download or read book Irrigation Scheduling at Tomatoes Crop Under Polyetilenne Tunnel Condition written by Mariana Florica Bei and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study examined the set of measures to ensure the correctly irrigation scheduling for optimal and uniform supply with water of crops, because irrigation sooner than necessary determined excess of soil moisture on short periods of time, oversized irrigation rate, waste of water and energy as well as negative consequences for soil and plant. Delay of irrigation leads to installation of hydric stress in the soil to the final negative consequences on agricultural yield (Domuta, 1995). The operation is particularly important for field crops and for the shelter, considering that irrigation scheduling represents measures that provided the correctly establishment of application time (Grumeza et al., 1989). Through this analysis we try to contribute to informing interested parties about the requirements of vegetable plants to water, air and soil, factors from the complex relations of interdependence, and their influence on the development, production and exploitation of vegetables.
Download or read book Irrigation Scheduling for Tomatoes written by Otinkorang, Edward Sowah and published by . This book was released on 1967 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Scheduling for Tomatoes written by and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Scheduling for Tomatoes Water Budget Approach written by Ontario. Ministry of Agriculture and Food and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Irrigation Scheduling and Management of Micro irrigated Tomatoes written by Gary A. Clark and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Irrigation Management Tool for Processing Tomato Production written by A. J. Van der Westhuizen and published by . This book was released on 2001 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scheduling Drip Irrigation for Tomato Production in Southwest Florida written by Donald J. Pitts and published by . This book was released on 1990* with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Nitrogen for Groundwater Quality and Farm Profitability written by Ronald F. Follett and published by . This book was released on 1991 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Interventions in Sustainable Trickle Irrigation written by Megh R. Goyal and published by CRC Press. This book was released on 2018-05-04 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving agricultural water use efficiency (WUE) is vitally important in many parts of the world due to the decreasing availability of water resources and the increasing competition for water between different users. Micro irrigation is an effective tool for conserving water resources. Studies have revealed a significant water savings, ranging from 40% to 70% under drip irrigation compared with surface irrigation. This new volume, Engineering Interventions in Sustainable Trickle Irrigation: Irrigation Requirements and Uniformity, Fertigation, and Crop Performance, presents valuable research that evaluates crop water and fertigation requirements, examines optimum irrigation and fertigation scheduling, and analyzes the performance of agricultural crops under micro irrigation. With an interdisciplinary perspective, this volume addresses the urgent need to explore and investigates the current shortcomings and challenges of water resources engineering, especially in micro irrigation engineering. The volume discusses crop water requirements, fertigation technology, and performance of agricultural crops under best management practices. The chapter authors present research studies on drip irrigated tomato, chilies, cucumber, eggplant, cabbage, garlic, sugarcane maize, cashew nut, sapota, banana, mango, and blueberries. Removing the research gap, this volume provides new information that will be valuable to those involved in micro irrigation engineering.
Download or read book Weed and Pest Control written by Sonia Soloneski and published by BoD – Books on Demand. This book was released on 2013-03-14 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers alternative insect control strategies, such as the allelopathy phenomenon, tactics in integrated pest management of opportunistic generalist insect species, biological control of root pathogens, insect pest control by polyculture strategy, application of several integrated pest management programs, irrigation tactics and soil physical processes, and carbon stocks to manage weeds.
Download or read book Fertigation Technologies for Micro Irrigated Crops written by Megh R. Goyal and published by CRC Press. This book was released on 2021-06-14 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new volume addresses the global water crisis by presenting new ways to use irrigation water judiciously through innovative fertigation management. It looks at the research and review work done throughout the world on micro irrigation and the techno-economic feasibility of various fertigation irrigation water management systems. Taking a multidisciplinary perspective, the chapters look at using fertigation to increase the effectiveness of irrigation systems crop performance evaluation of various crops under fertigation and irrigation methods estimating levels of crop requirements scheduling of fertigation and irrigation new fertigation equipment and technology cost components of the various irrigation and fertigation systems
Download or read book Genetic Engineering Biofertilisation Soil Quality and Organic Farming written by Eric Lichtfouse and published by Springer Science & Business Media. This book was released on 2010-06-14 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable agriculture is a rapidly growing field aiming at producing food and energy in a sustainable way for humans and their children. Sustainable agriculture is a discipline that addresses current issues such as climate change, increasing food and fuel prices, poor-nation starvation, rich-nation obesity, water pollution, soil erosion, fertility loss, pest control, and biodiversity depletion. Novel, environmentally-friendly solutions are proposed based on integrated knowledge from sciences as diverse as agronomy, soil science, molecular biology, chemistry, toxicology, ecology, economy, and social sciences. Indeed, sustainable agriculture decipher mechanisms of processes that occur from the molecular level to the farming system to the global level at time scales ranging from seconds to centuries. For that, scientists use the system approach that involves studying components and interactions of a whole system to address scientific, economic and social issues. In that respect, sustainable agriculture is not a classical, narrow science. Instead of solving problems using the classical painkiller approach that treats only negative impacts, sustainable agriculture treats problem sources. Because most actual society issues are now intertwined, global, and fast-developing, sustainable agriculture will bring solutions to build a safer world. This book series gathers review articles that analyze current agricultural issues and knowledge, then propose alternative solutions. It will therefore help all scientists, decision-makers, professors, farmers and politicians who wish to build a safe agriculture, energy and food system for future generations.
