Refine search
Results 1-10 of 13,920
Leaf area index assessment for tomato and cucumber growing period under different water treatments Full text
2017
Shaikh Abdullah Al MAMUN HOSSAIN | Lixue WANG | Taotao CHEN | Zhenhua LI
Leaf area index assessment for tomato and cucumber growing period under different water treatments Full text
2017
Shaikh Abdullah Al MAMUN HOSSAIN | Lixue WANG | Taotao CHEN | Zhenhua LI
The aim of this study was to assess the leaf area index (LAI) of tomato and cucumber using an AccuPAR-LP-80-ceptometer to find the influence of irrigation. LAI was also determined by destructive sampling for comparison. The research was conducted at the Liaoning Water Conservancy Institute, North China in 2016. A randomized block design was used to test the influence of four treatments corresponding to field water capacity. Full irrigation (W1.0), 15% (W0.85), 25% (W0.75) and 35% (W0.65) water deficit were applied using the drip system. Regression model was developed to estimate LAI in response to irrigation. The results show that there is no difference between the two methods. The highest LAI obtained for tomato and cucumber was 5.21 and 3.21 m2/m2, respectively, with W0.85 at 70-days after transplanting, which corresponds with destructive results. This result was found 11% higher and equal compared with W1.0 for tomato (4.62) and cucumber (3.21), respectively. For both crops, LAI was found significantly influenced at 50-days after transplanting. It also indicated that LAI significantly influenced (by 15%) deficit irrigation for both crops and methods that achieved the highest yield. The predicted LAI was obtained best-fitting with the observed values, which indicated that the AccuPAR-ceptometer is suitable to be used.
Show more [+] Less [-]Leaf area index assessment for tomato and cucumber growing period under different water treatments Full text
2017
Mamun Hossain SAA, Wang LX, Chen TT et al.
The aim of this study was to assess the leaf area index (LAI) of tomato and cucumber using an AccuPAR-LP-80-ceptometer to find the influence of irrigation. LAI was also determined by destructive sampling for comparison. The research was conducted at the Liaoning Water Conservancy Institute, North China in 2016. A randomized block design was used to test the influence of four treatments corresponding to field water capacity. Full irrigation (W1.0), 15% (W0.85), 25% (W0.75) and 35% (W0.65) water deficit were applied using the drip system. Regression model was developed to estimate LAI in response to irrigation. The results show that there is no difference between the two methods. The highest LAI obtained for tomato and cucumber was 5.21 and 3.21 m2/m2, respectively, with W0.85 at 70-days after transplanting, which corresponds with destructive results. This result was found 11% higher and equal compared with W1.0 for tomato (4.62) and cucumber (3.21), respectively. For both crops, LAI was found significantly influenced at 50-days after transplanting. It also indicated that LAI significantly influenced (by 15%) deficit irrigation for both crops and methods that achieved the highest yield. The predicted LAI was obtained best-fitting with the observed values, which indicated that the AccuPAR-ceptometer is suitable to be used.
Show more [+] Less [-]The Growing Role of Minerals and Metals for a Low Carbon Future Full text
2017
World Bank Group
Climate and greenhouse gas (GHG) scenarios have typically paid scant attention to the metal implications necessary to realize a low/zero carbon future. The 2015 Paris Agreement on Climate Change indicates a global resolve to embark on development patterns that would significantly be less GHG intensive. One might assume that nonrenewable resource development and use will also need to decline in a carbon-constrained future. This report tests that assumption, identifies those commodities implicated in such a scenario and explores ramifications for relevant resource-rich developing countries. Using wind, solar, and energy storage batteries as proxies, the study examines which metals will likely rise in demand to be able to deliver on a carbon-constrained future. Metals which could see a growing market include aluminum (including its key constituent, bauxite), cobalt, copper, iron ore, lead, lithium, nickel, manganese, the platinum group of metals, rare earth metals including cadmium, molybdenum, neodymium, and indium—silver, steel, titanium and zinc. The report then maps production and reserve levels of relevant metals globally, focusing on implications for resource-rich developing countries. It concludes by identifying critical research gaps and suggestions for future work.
Show more [+] Less [-]Contracts and Agreements For Custom Dairy Heifer Growing Full text
2017
Karszes, Jason | Cady, Roger A.
Growing with wheat and barley rusts for three decades Full text
2017
BHARDWAJ, S.C.
I feel honoured and elated for being conferred S.N. Dasgupta memorial award. I am grateful to the Indian Phytopathological Society to bestow this honour upon me which is named after one of the great Scientists of all the times. Dr. Dasgupta belonged to a family of distinguished people. He did pioneer research on physiological plant pathology, was an excellent Fungal taxonomist who rose to become the Vice Chancellor of Kalyani University, a position he served for two terms. I think he would have been very happy today to see that I would be discussing very important disease rust and sharing my experience with this august gathering, on ways and means to secure wheat. This crop is synonym to economic health and nutritional security of many countries with India no exception. Today we remember Dr. Dasgupta for the work done by him for the progress of biosciences and this lecture is a tribute to the great soul.
Show more [+] Less [-]Success with succulents
2017
Bagnasco, John | Reidmuller, Robert
"Succulents and cacti are wildly popular in homes the world over, regardless of climate. Whether you're in the southwestern United States enjoying succulents on the patio, or raising a cactus garden on a windowsill in Minnesota, this book has something for you. Success with Succulents is filled with well-known and unusual species of cactuses and succulents, as well as tips and techniques for caring for these water-sipping species. Color combinations outdoors, growing indoors, ideal soil and soil mixes, watering, fertilizing, grooming, and propagation sections teach all kinds of things about caring for cactuses and succulents. The book also includes more than 100 plant profiles, with details that will help you succeed in gardening prickly and waxy varieties of all kinds."--
Show more [+] Less [-]Growing of high-qualitative table grapes for storage and transportation Full text
2017
Rasulov, A.T.
Growing of high-qualitative table grapes for storage and transportation is carried out by using separate agrotechnical methods. To study these problems we have founded experience in the farm “Haji Aleddin farmer Ltd.” 100 ha of vineyards possess in this farm.It was established that the qualitative crop suitable for storage and transportation the of table varieties Tayfy pink obtained by remaining 40 bushes of green shoots after the first debris and pruning of fruit shoots to the length of 12–15 holes. And Sultana varieties respectively 35 green shoots and trim the length of 10–12 buds.
Show more [+] Less [-]Kansas Farmers Interest and Preferences for Growing Cellulosic Bioenergy Crops Full text
2017
Fewell, Jason | Lynes, Melissa | Williams, Jeffery | Bergtold, Jason
A survey was administered to determine Kansas farmers’ willingness to grow crops for biofuel. The primary purpose of the survey was to assess farmers’ willingness to produce biomass for cellulosic bioenergy in the forms of a value added crop, an annual energy crop, and a perennial energy crop under a favorable contractual arrangement, as well as to determine reasons they would or would not grow a bioenergy crop under a contract. Results show that net returns and contract length were the most important characteristics influencing farmers’ willingness to produce cellulosic bioenergy crops.
Show more [+] Less [-]Long-Term Prospects for Agriculture Reflect Growing Demand for Food, Fiber, and Fuel Full text
2017
Westcott, Paul C. | Trostle, Ronald
Green Biorefinery of Giant Miscanthus for Growing Microalgae and Biofuel Production Full text
2017
Shuangning Xiu | Bo Zhang | Nana Boakye-Boaten | Abolghasem Shahbazi
In this study, an innovative green biorefinery system was successfully developed to process the green biomass into multiple biofuels and bioproducts. In particular, fresh giant miscanthus was separated into a solid stream (press cake) and a liquid stream (press juice) using a screw press. The juice was used to cultivate microalga Chlorella vulgaris, which was further thermochemically converted via thermogravimetry analysis (TGA) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) analysis, resulting in an approximately 80% conversion. In addition, the solid cake of miscanthus was pretreated with dilute sulfuric acid and used as the feedstock for bioethanol production. The results showed that the miscanthus juice could be a highly nutritious source for microalgae that are a promising feedstock for biofuels. The highest cell density was observed in the 15% juice medium. Sugars released from the miscanthus cake were efficiently fermented to ethanol using Saccharomyces cerevisiae through a simultaneous saccharification and fermentation (SSF) process, with 88.4% of the theoretical yield.
Show more [+] Less [-]Seeds and cones for larches growing in the Taimyr treeline ecotone Full text
2017
Wieczorek, Mareike | Kruse, Stefan | Epp, Laura Saskia | Kolmogorov, Alexei | Nikolaev, Anatoly N | Heinrich, Ingo | Jeltsch, Florian | Pestryakova, Luidmila A | Zibulski, Romy | Herzschuh, Ulrike
