نتایج جستجو برای: the first irrigation delay after chemical application
تعداد نتایج: 16554123 فیلتر نتایج به سال:
introduction canary seed (phalaris canariensis l.) is a forage plant from poaceae family. this plant is drought tolerant. canary seed is originally a native to mediterranean region, which can be grown commercially in several parts of the word, especially in semi-arid conditions. increasing growth of population and lack of ability of pastures to satisfy the food requirement of animal has led to ...
in order to study the residues of phosphorous insecticides in mazandaran district of iran, ethion, azinphosmethyl, diazinon and malathion four most used pesticides were chosen and river water samples were collected in april to sept. 2000, throughout the mazandaran state. thin layer chromatography was used, since it was the best applicable method in area with reasonably high level of sensitivity...
previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...
up to now, interactions between method and amount of nitrogen fertilizers application on plant density and variety of wheat under sprinkler irrigation systems have not been studied. thus, this research was conducted during two years in esfehan region with split factorial design. the treatments of this experiment were: three fertilizers application methods (conventional manual application at the...
abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...
Bemisia tabaci is one of the most important pests of tomato greenhouses in Jiroft and chemical control is the only way to control this pest. To reduce the use of chemical pesticides and produce healthy crops, studying safer control methods such as application of kaolin powder is very important. In this study, the effect of kaolin clay, made in Iran (Sepidan(R)), on the control of Bemisia tabaci...
0022-1694/$ see front matter Published by Elsevier doi:10.1016/j.jhydrol.2011.03.040 q Manufacturer or trade names are included for the names, the USDA-ARS implies no endorsement, recom ⇑ Corresponding author. Tel.: +1 208 423 6508; fax E-mail address: [email protected] (G.A. L Differences in irrigation water quality may affect the water repellency of soils treated or untreated with sur...
short story as an important literary genre in the recent decade is focused by many of young writers and literary critical with searching structure, content , artistic techniques and cognitive phenomenon of these works , we can show quantity of using some parts of storied literature from new literal techniques of the word and also we can show the usage of native, cultural and social foundation...
In order to compare the effect of drip and furrow irrigation methods with different quantities of water (50%, 75%, and 100% of the amount of water evaporated from class A pan evaporation during irrigation intervals) on yield and quality of tomato, an experiment was conducted on a silty loam soil in Mashhad Agricultural Research Station. The experimental design was a factorial trial with complet...
In order to study the effects of foliar application of potassium (K) and boron (B) and dificit irrigation treatments on quantitative and qualitative traits of sugar beet (Beta vulgaris L.), a split plot experiment was conducted based on randomized complete block design with three replications in the Research Field of Shahrekord University, Shahrekord, Iran, in 2019. The main plots were allocate...
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