نتایج جستجو برای: 4 d residues corn irrigation soil simulation
تعداد نتایج: 2535012 فیلتر نتایج به سال:
residues on the soil surface to retard soil erosion, insulate the soil, and conserve soil moisture. This residue consists of leaves, leaf sheaths, ear husks, and stalks of corn that decompose very slowly on the soil surface. The relationship of surface residue to corn diseases can be divided into two categories: (1) a source of inoculum of disease-causing organisms, and (2) environment modifica...
to evaluate the sensitivity of different crops included some pulses to simulated metribuzin soil residues, an experiment was conducted in completely randomized design with factorial arrangement and four replications in research greenhouse of college of agriculture, ferdowsi university of mashhad. treatments included of 8 crops (chickpea, common bean, lentil, corn, wheat, barley, rape seed and s...
Constant use of treated wastewater (TWW) for irrigation over prolonged periods may cause buildup of heavy metals up to toxic levels for plants and animals, and entails environmental hazards in different aspects. However, application of TWW on agricultural land might be an effective and sustainable strategy in arid and semi-arid countries where fresh water resources are under great pressure, as ...
Opoku, G., Vyn, T. J. and Voroney, R. P. 1997. Wheat straw placement effects on total phenolic compounds In soil and corn seedling growth. Can. J. Plant Sci. 77: 301-305. The effects of placement of wheat (Triricum aestivum L.) straw on the release of phenolic compounds potentially phytotoxic to corn (Zen mays L.) seedling growth were examined in plastic pots under controlled conditions in grow...
Pre-emergence herbicide residues were detected in domestic wells sampled near Tracy, CA. This study sought to determine the source of contamination by comparing soil distribution of diuron [N'-(3,4-dichlorophenyl)-N,N-dimethylurea] and hexazinone [3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione] in an agricultural field where the soil was a cracking clay to infiltration ...
in the present study, the effects of different cadmium (cd) levels of irrigation water (0, 5, 10 and 20 mg l-1) on corn plants (foliage) under different irrigation intervals (1, 3, and 7 days) were investigated. clear cd toxicity symptoms appeared on the plants at the end of the experiment. the results showed that stem dry weight (dw) followed by transpiration (t) and plant height were the meas...
The carcinogen aflatoxin B1 (AFB1) produced by Aspergillus flavus is a major food safety concern in crops. However, information on AFB1 occurrence in soil and crop residue is scarce. A series of experiments investigated the occurrence of AFB1 in soil and corn residues and ascertained the ecology of A. flavus in a Dundee silt loam soil. Samples of untilled soil (0-2 cm) and residues were collect...
Furrow irrigation is the most common method of surface irrigation. However, the accurate estimation of the soil water infiltration equation is the most important challenge for evaluating this method of irrigation. In this study, a fast and simple method that is named soil intake families and presented by USDA-NRCS (RSIF), evaluated for estimation of the Kostiakove-lewis infiltration equation pa...
The objective of this study was to evaluate the effects of crop residues management on soil physical and biological properties. The impacts of residue management on yield of forage corn and barley and soil micro-organisms population were also studied. The results showed that application of crop residues increased soil organic matter (22.2 %), saturated hydraulic conductivity (51.9 %), porosity ...
Effect of Municipal Wastewater on the Accumulation of Heavy Metals Cadmium and Lead in Soil and Corn
Background and Objective: Using wastewater as a renewable water source to irrigate plants is a safe and effective solution. In contrast, the accumulation of heavy elements in soil and plants is one of the concerns of the use of wastewater in agriculture. This study was conducted to investigate the effects of urban wastewater use on the most important physiological parameters related to the grow...
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