نتایج جستجو برای: with activation of autumn sugar beet planting for bio
تعداد نتایج: 23586673 فیلتر نتایج به سال:
chapter one is devotod to collect some notion and background informations, which are needed in the next chapters. it also contains some important statements which will be proved in a more general context later in this thesis. in chapter two, we show that if the marginal factor-group is of order np1...pk,n>1, then we obtain a bound for the order of the verbal subgroup. also a bound for the bear-...
as water is the most restrictive factor in national agricultural production, it is necessary to take decreased water consumption and increased water us efficiency in crop production into consideration. nowadays, spring sugar beet production areas are concentrated in the region with water limitation and hence, the increase in spring production area contradicts the principle of water and soil con...
this study aimed at determining the evapotranspiration and crop coefficient (kc) of sugar beet during the plant growth using drainage lysimeter by using water balance and experimental methods for three years in shahrekord. after sugar beet planting and out of lysimeter, evapotranspiration was measured weekly and monthly by measuring the factors of the water- balance equation. results showed tha...
the purpose of this study was the relationship between problem – solvi ability with fdi cognitive style of students.the research method was correlation method. for data analysis pearson test was used. statistical society in this research was all the students of alligoodarz city in 1391-92 year.to sampling of statiscal population was used sampling multi-stage random the size of sample selected 2...
Shortage of irrigation water is a major problem constraining in agricultural production in arid and semi-arid regions. Deficit irrigation is one way to cope with water scarcity and increase water use efficiency. Determining the optimum applied water based on economic analysis is a major key to the deficit irrigation strategy. In this study, the required equations were derived to determine the o...
a factorial experiment was conducted for two years in the mahidasht experimental station in kermanshah. the objective of this experiment was to determine the optimum time of nitrogen application on two sugar beet varieties from both, quality and quantity point of views. these varieties, 7233- a diploid and pp22 a polyploidy variety were grown and subjected to five levels of nitrogen application...
in order to study the effect of genotype × environment interaction and stability of sugar beet varieties, four cultivars, including shirine, zarghan, laetitia and 7112 hybrid were planted in five major areas near to sugar beet factory of biseton as kangavar, sahneh, chamchamal, dinavar and ravansar for three years (2006-2008) using a randomized complete block designs, with three replications. a...
to determinine the timeliness cost of machine operation, farm-level data were collected from random sample of 227 sugar beet farms located in the three major districts of fars province of iran: eghlid, marvdasht and fasa in 2006. the results showed that timeliness cost of tillage practices (plough and land leveling), applying fertilizers before planting and timeliness in seed planting per ever...
genus polymyxa, belongs to plasmodiophoromycota phyllum and protozoa kingdom. this fungus is a obligate endoparasite in the root cells of vascular plants. since the two species of this genus, p. graminis and p. betae are both known to carry destructive viral agents to sugar beet and poaceae. for studying the distribution of infected fields with p. betae in razavi and northern khorasan provinces...
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