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Registros recuperados: 3
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Estimation of weed dry biomass and grain yield as a function of growth and yield traits under allelopathic weed management in maize Planta Daninha
MAHMOOD,A.; KHALIQ,A.; IHSAN,M.Z.; NAEEM,M.; DAUR,I.; MATLOOB,A.; EL-NAKHLAWY,F.S..
Growing concerns about toxicity and development of resistance against synthetic herbicides have demanded looking for alternative weed management approaches. Allelopathy has gained sufficient support and potential for sustainable weed management. Aqueous extracts of six plant species (sunflower, rice, mulberry, maize, brassica and sorghum) in different combinations alone or in mixture with 75% reduced dose of herbicides were evaluated for two consecutive years under field conditions. A weedy check and S-metolachlor with atrazine (pre emergence) and atrazine alone (post emergence) at recommended rates was included for comparison. Weed dynamics, maize growth indices and yield estimation were done by following standard procedures. All aqueous plant extract...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Allelopathy; Crop growth indices; Mulberry; Plant combinations.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100023
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WATER USE EFFICIENCY, GROWTH AND YIELD OF WHEAT CULTIVATED UNDER COMPETITION WITH Setaria Planta Daninha
IHSAN,M.Z.; EL-NAKHLAWY,F.S.; ISMAIL,S.M..
ABSTRACT Understanding the critical period of weed competition is indispensable in the development of an effective weed management program in field crops. Current experiment was planned to evaluate the critical growth period ofSetaria and level of yield losses associated with delay in weeding in rain-fed drip irrigated wheat production system of Saudi Arabia. Field experiment was conducted to evaluate the effect of weeding interval (07-21, 14-28, 21-35, 28-42 and 35-49 days after sowing) and drought stress (75% and 50% of field capacity) on Setaria growth, wheat yield and water use efficiency. Season long weedy check and wellwatered (100% FC) plots were also maintained for comparison. Weeding interval and drought stress significantly (p ≤ 0.05) affected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Weed control; Competition interval; Setaria viridis; Field capacity; Arid land.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000400679
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ASSESSMENT OF JEDDAH PARKS HEALTH STATUS BY Cyperus rotundus AND SOIL ANALYSIS UNDER WASTE WATER IRRIGATION Planta Daninha
EL-NAKHLAWY,F.S.; AL-SHAREEF,A.R.; IHSAN,M.Z..
ABSTRACT To investigate the health status of public parks in Jeddah city, a field survey was conducted based on the Cyperus rotundus weed and soil analysis of wastewater-irrigated parks during 2012. The city was divided into five different locations (North, South, East, West and Middle) and five parks were randomly sampled from each location; thus, the total number of sampled parks were twenty five. Toxic metals concentration were analyzed in the soil and in the plants while bacterial count was determined from the weed leaves. All studied toxic metals have significantly crossed the European Union safety limits for plant samples, while soil samples were just beyond the limit. The highest concentration was perceived for Lead (133-232 mg kg-1) and was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cyperus rotundus; Chromium; Bacteria; Parks health; Waste water irrigation.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100213
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