نتایج جستجو برای: greenhouse crops

تعداد نتایج: 71599  

2014
Jan Bontsema Jochen Hemming

In the EU-funded CROPS (Clever Robots for Crops) project high tech robots are developed for site-specific spraying and selective harvesting of fruit and fruit vegetables. The harvesting robots are being designed to harvest high-value crops such as greenhouse vegetables, fruits in orchards and grapes for premium wines. The CROPS robots are also developed for canopy spraying in orchards and for p...

Background and Objectives: Greenhouse cucumber is one of the most important summer crops of Iran. Quality of the product is immediately lost after harvest due to physicochemical changes. Thus, use of special pre-processes (especially use of edible coating) to delay their maturity and increase the shelf-life of the product is important. Materials and Methods: To decrease weight loss, preserve nu...

2014
Dong Jiang Mengmeng Hao Jingying Fu Qiao Wang Yaohuan Huang Xinyu Fu

The main purpose for developing biofuel is to reduce GHG (greenhouse gas) emissions, but the comprehensive environmental impact of such fuels is not clear. Life cycle analysis (LCA), as a complete comprehensive analysis method, has been widely used in bioenergy assessment studies. Great efforts have been directed toward establishing an efficient method for comprehensively estimating the greenho...

Journal: :Applied Water Science 2022

Abstract One of the basic objectives sustainable agriculture is efficient use available inputs and resources. Hence, energy was evaluated in present study for cultivation greenhouse gas emissions main horticultural crops paddy Tajan. The required data were collected through relying on subjective objective methods such as questionnaries field recorded Tajan plain period 2020–2022. maximum input ...

2012
Yorike Hartman Danny A P Hooftman Brigitte Uwimana Clemens C M van de Wiel Marinus J M Smulders Richard G F Visser Peter H van Tienderen

Many crops contain domestication genes that are generally considered to lower fitness of crop-wild hybrids in the wild environment. Transgenes placed in close linkage with such genes would be less likely to spread into a wild population. Therefore, for environmental risk assessment of GM crops, it is important to know whether genomic regions with such genes exist, and how they affect fitness. W...

Journal: :Journal of nematology 2004
Heidi J Smith Fred A Gray David W Koch

The reproduction of a Wyoming population of Heterodera schachtii was determined for resistant trap crop radish (Raphanus sativus) and mustard (Sinapis alba) cultivars, and resistant and susceptible sugar beet (Beta vulgaris) cultivars in a greenhouse (21 degrees C/16 degrees C) and a growth chamber study (25 degrees C). Oil radish cultivars also were field tested in 2000 and 2001. In the greenh...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
M R Schmer K P Vogel R B Mitchell R K Perrin

Perennial herbaceous plants such as switchgrass (Panicum virgatum L.) are being evaluated as cellulosic bioenergy crops. Two major concerns have been the net energy efficiency and economic feasibility of switchgrass and similar crops. All previous energy analyses have been based on data from research plots (<5 m2) and estimated inputs. We managed switchgrass as a biomass energy crop in field tr...

2016
Hakkwan Kim Hanseok Jeong Jihye Jeon Seungjong Bae

Since the salinity of irrigation water is a critical constraint to the production of certain vegetable crops, salinity has been considered as one of the most important factors of irrigation water. The objective of this study was to investigate the response of lettuce and Chinese cabbage to various salinity levels of irrigation water in greenhouse cultivation. A pot experiment was conducted with...

2007
Derek Cardwell

This study examined the management situation for the Columbia root-knot nematode (Meloidogyne chitwoodi) in potato, using an approach with systems thinking and interactive meetings. The focus of current research for control of this nematode was evaluated. Control practices include crop rotation, and this study also evaluated popcorn cultivars for their potential as resistant rotation crops. Pop...

Ali Rajabpour, Fatemeh Yarahmadi Leila Ramezani Nooshin Zandi Sohani

Objective: Sweet potato whitefly, Bemisia tabaci Gen. (B. tabaci), is one of the most important pests of various greenhouse crops in Iran. Nowadays, chemical insecticides are broadly used for control of the pests that causes risk to consumer's health. For the first time, contact toxicity of Pelargonium roseum Andrews and Artemisia sieberi Besser essential oils on B. tabaci and its possible appl...

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