Investigation of the effect of phosphorus fertilizer and spraying Fe chellat in micronutrients absorption rate, rate of proline and soluble carbohydrates in bread wheat and some of its ancestral species in dryland condition
M.
Akbari
کارشناسارشد گروه زراعت، دانشگاه ایلام
author
M.J.
Zare
عضو هیأت علمی دانشگاه ایلام
author
A.A.
M.
عضو هیأت علمی دانشگاه ایلام
author
A.A.
N.
عضو هیأت علمی دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
text
article
2013
per
In order to investigate the effect of phosphorus fertilizer and spraying Fe chellat in micronutrients absorption rate, rate of proline and soluble carbohydrates in bread wheat and some of its ancestral species in dryland condition, a factorial experiment was conducted with three factors consist of: P fertilizer (in two levels), spraying Fe chellat (in two levels) and different species of wheat (sardari cultivar, Triticum boeoticum, Aegilops speltoides,Triticum diccocoides,Aegilops tauschii) in the form of randomized complete blocks design with three replications in research farm of Agricultural faculty of Ilam University. Results showed that micronutrients absorption rate in different species of wheat was different significantly. Triticum diccocoides had the most rate of phosphorus and cupper absorption, Aegilops speltoides had the most of Mn absorption efficiency and Triticum boiticum had the most rate of Fe absorption. Results showed that in flowering stage application of P fertilizer caused increase in proline and soluble carbohydrates. Sardari cultivar and Aegilops tauschii had the most amount of proline and carbohydrate content. Interaction of P fertilizer factor in different species of wheat was significant on proline and soluble carbohydrates rate. Application of phosphorus, increased proline and soluble carbohydrates rate in crop species of wheat and Aegilops tauschii more than other species.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
1
17
https://ejcp.gau.ac.ir/article_1509_f06198589721aa18e05253848627cfdf.pdf
Evaluating of some herbicides for Lambsquarter
and prostrate pigweed control in potato fields
M.T.
Alebrahim
گروه شناسایی و مبارزه با علفهای هرز، دانشگاه فردوسی مشهد
author
M.H.
Rashed Mohassel
گروه شناسایی و مبارزه با علفهای هرز، دانشگاه فردوسی مشهد
author
S.
Wilcockson
گروه زراعت، دانشگاه نیوکاسل انگلستان
author
M.A.
Baghestani
مؤسسه تحقیقات آفات و بیماریهای گیاهی، بخش تحقیقات علفهای هرز
author
R.
Ghorbani
گروه شناسایی و مبارزه با علفهای هرز، دانشگاه فردوسی مشهد
author
M.
Seragchi
گروه شناسایی و مبارزه با علفهای هرز، دانشگاه فردوسی مشهد
author
text
article
2012
per
In order to evaluate the effect of Rimsulfuron, EPTC (Eradican), oxadiargyl, metribuzin and Metribuzin herbicides for controling of Lambsquarter (Chenopodium album) and prostrate pigweed (Amaranthus retroflexus), an experiment was conducted at the Mohaghegh Ardabili University green house in 2008. A dose-response assay was conducted based on completely randomized design with four replications. The potato cultivar was Agria (common cultivar in Ardabil). Herbicides were used in six doses included reduced and overdoses rather than recommended doses. Common lambsquarter and prostrate pigweed were sprayed during the 2-4 leaves stage and potato was in 15-20 cm. Results showed that the most effective herbicides for weed control were Metribuzin, Oxadiargyl, Rimsulfuron and EPTC, respectively. Also the least herbicides damage for potato was in Rimsulfuron, EPTC, Oxadiargyl and Metribuzin, respectively.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2012
19
37
https://ejcp.gau.ac.ir/article_1202_e5a5668dbdd965b887774813fcb1e253.pdf
Study of dry matter and nitrogen accumulation, remobilization
and harvest index in bread and durum wheat cultivars
S.
Bakhshandeh
مدرس گروه علوم کشاورزی، دانشگاه پیامنور
author
A.
Soltani
استاد گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
E.
Zeinali
استادیار گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
R.
Ghadiryan
دانشآموخته کارشناسیارشد گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
text
article
2012
per
The aim of this experiment was the study of dry matter and nitrogen (N) accumulation, remobilization and harvest index in different wheat cultivars. Five bread wheat cultivars (Darya, Kuhdasht, Shiroudi, Tajan and Zagros) and two durum wheat cultivars (Arya and Dena) were studied under optimum growth conditions during 2008-2009 at research field of Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran. Experimental design was a randomized complete block design with four replications. Results indicated that average total dry matter remobilization was 23.8%,which was affected by cultivar. Furthermore, results indicated that 57% of N remobilization from vegetative organs before anthesis and 11% from N uptake and/or N remobilization after anthesis contributed for grain growth. Therefore, majority of grain N supplied by remobilization of N from vegetative organs during seed filling period. Among organs, the leaves had the highest N remobilization (nearly 72%). Results indicated that leaves and stems N concentration decreased 57 and 54%, respectively, at the time of physiological maturity as compared with anthesis. N harvest index was 72.2% which it was not affected by cultivar. Meanwhile, N concentration in senesced leaves and stems along with grains were 1.04, 0.43 and 2.13%, respectively. The amount of harvest index was 44.1%, and it was not affected by the cultivar. There was a positive and significant correlation between the amount of N uptake by vegetative tissues, especially in leaves, with grain N and grain yield. The parameters obtained in this study can be used in wheat N modeling.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2012
39
59
https://ejcp.gau.ac.ir/article_1203_3e242a46295208be04fdf3b0aa7c3fe1.pdf
Study the competition of weeds in canola (Brassica napus L.) field using reciprocal of individual plant weight model and weed relative leaf area
A.
Ghanbari
استادیار دانشگاه فردوسی مشهد،
author
E.
Kazerooni Monfared
استادیار دانشگاه جامع علمی- کاربردی
author
M.T.
Aleebrahim
استادیار دانشگاه محقق اردبیلی
author
S.
Mijani
دانشجوی کارشناسیارشد دانشگاه فردوسی مشهد
author
M.
Afshari
دانشجوی دکتری دانشگاه فردوسی مشهد
author
J.
Shabahang
کارشناس آموزشی گروه زراعت، دانشگاه فردوسی مشهد
author
text
article
2013
per
In order to evaluate competition among some weed species and canola, a field experiment in Astan Ghods Razavi's field in Mashhad was done on 2007-2008. Thirty 50×50 cm quadrates were used in two times (stem and flower production) to measure the canola dry weight, leaf area index and canola and weeds density with destruction and thirty similar quadrates were used for counting weed species and identification without destruction. In order to estimate dry weight and leaf area of non-destructive quadrates; a nonlinear hyperbolic function has been fitted between leaf area or dry weight of weed and canola (species exist in destructive quadrates) as a dependent variant and their number as an independent variant. For comparison of competition status and estimation of inter and intra specific competition coefficient for each species, multi linear regression function between the early season’ relative leaf area as an independent variant and the latter season’ The reciprocal of individual plant weight of weed and canola as a dependent variant has been fitted. Regression Results showed that reversed weed dry weight and relative leaf area have a proper fitting (r2= 0.87) for estimation of yield reduction and competition coefficients. In this research in spite of present of Fumitory (Fumaria officinalis L.), Knot weed (Polygonum aviculare L.) and Malcolm stock (Malcolmia Africana (L.)) only wild oat (Avena ludoviciana L.) inhibited canola growth. The positive effect of other weed species on canola growth was probably due to their inhibitive effect on wild oat as a main competitor for canola.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
61
75
https://ejcp.gau.ac.ir/article_1204_39e31e50c9ffcb91abe033bcc2b1d4e6.pdf
Evaluation of forage quality in intercropping maize with some legumes
A.
Javanmard
استادیار گروه زراعت و اصلاح نباتات، دانشگاه مراغه
author
A.
Dabbagh Mohammadi Nasab
دانشیار گروه زراعت و اصلاح نباتات، دانشگاه تبریز
author
A.
Javanshir
استاد گروه زراعت و اصلاح نباتات، دانشگاه تبریز
author
M.
Moghadam
استاد گروه زراعت و اصلاح نباتات، دانشگاه تبریز
author
H.
Janmohammadi
دانشیار گروه علوم دامی، دانشگاه تبریز
author
text
article
2012
per
In order to evaluate forage quality in intercropping, two field experiments were carried out based on randomized complete block design with three replications at the Agricultural Research Station, Faculty of Agriculture, University of Tabriz, Iran, in 2005-2006 and 2006-2007 growing seasons. Two maize (Zea mays L.) hybrids (SC704, SC301), vetch (Vicia villosa), bitter vetch (Vicia ervilia), berseem clover (Trifolium alexandrinum L.) and common bean (Phaseolus vulgaris) as sole crops and intercrops of maize hybrids with each of the legumes as an additive method were used. Results showed that forage quality characteristics such as protein yield, neutral detergent fiber (NDF), acid detergent fiber (ADF), total digestible nutrients (TDN) and dry matter intake (DMI) were affected by intercropping. The highest crude protein yield (CPY) was achieved with maize hybrid 704-vetch (1937.19 kg.ha-1) and maize hybrid 301-vetch (2180.95 kg.ha-1) intercrops and the lowest CP per ha was observed at monocultures of maize hybrid 704 (714.97 kg.ha-1) and maize hybrid 301 (762.308 kg.ha-1). Also mixture maize hybrid 301 with bean, vetch and bitter vetch showed a lower NDF and ADF content than the other intercrops. In conclusion as NDF and ADF percent decreased in intercrops, but TDN and DMI increased. Based on this study, mixture of maize hybrid 301 with vetch and common bean is considered as prime forage.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2012
77
96
https://ejcp.gau.ac.ir/article_1205_1511e3401c5e0ba11b4cd50a24e86e72.pdf
Evaluation of the effect of some factors on efficacy of Rindite on breaking dormancy of potato minitubers
S.
Monajjem
دانشجوی دکتری گروه تکنولوژی بذر، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
A.
Noshkam
دانشجوی دکتری گروه زراعت، دانشگاه تهران، پردیس کشاورزی و منابع طبیعی کرج
author
Kh.
Salimi
دانشجوی دکتری گروه زراعت، دانشگاه تهران، پردیس کشاورزی و منابع طبیعی کرج
author
E.
Rezvani
دانشجوی دکتری گروه تکنولوژی بذر، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
text
article
2013
per
One of the major problems in reproduction of potato minitubers, is the low germination due to dormancy period that it’s led to low germination percentage, vigor and rot of tubers planted. Therefore a factorial experiment based on the Completely Randomized Design with three replications was carried out with a topic of the effects of application of Rindite in various concentrations (0, 0.2, 0.4 and 0.6 ml L-1) and exposure duration (24, 48 and 72 h) on the breaking of dormancy and sprouting of potato (Solanum tuberosum L., cv. Marfona) minitubers in two ages (freshly harvested and one week after harvest). In comparison with the control, Rindite treated minitubers showed significantly shorter dormancy, especially when minitubers were treated one week after harvest. Three-way interactions of concentration, duration and minitubers age on the minituber sprouting were statistically significant and application of Rindite by fumigation with 0.2 ml L-1 for 48 h or 0.4 ml L-1 for 24 h effectively reduced the dormancy period of one week old minitubers. The number of sprouts per minituber was significantly enhanced by treating minitubers with Rindite, however, there were no differences among concentration or exposure duration. The length of sprouts per minituber was significantly increased by treating minitubers with Rindite. There were also strong interaction between concentration and duration, so that in concentration of 0.2 ml L-1, the length of sprout showed a positive correlation with exposure duration. When longer duration was accompanied with higher concentration, treatment with Rindite led to rotting of minitubers.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
97
108
https://ejcp.gau.ac.ir/article_1206_d32edee26e4a383c045a8beb279e1967.pdf
Study of seed yield and seed macro elements content of three winter rapeseed varieties as affected by different nitrogen sources
M.
Mostafavirad
استادیار مرکز تحقیقات کشاورزی و منابع طبیعی اراک
author
text
article
2013
per
In the first phase of this research, adaptability of winter rapeseed (Brassica napus L.) varieties were investigated to select high yielding rapeseed cultivars. Accordingly, two field experiments were performed in 2006-2007 and 2007-2008 cropping seasons at experimental field of Agricultural and Natural Resources Research Center of Markazi Province, in Arak, Iran, in a randomized complete block design with three replications and using 15 winter rapeseed varieties. Results showed that Licord, Modena and Okapi varieties had superiority to other cultivars, respectively. At the second phase of this research, also, two field experiments were carried out during 2008-2009 and 2009-2010 cropping seasons at the same site, in order to evaluate the effects of nitrogen sources on seed yield and content of macro nutrient in seed of selected high yielding rapeseed varieties. Experimental design was a factorial arrangement based on randomized complete block with three replications. Three rapeseed varieties (V1 = Okapi, V2 = Modena and V3 = Licord) and three sources of nitrogen based on 150 kgN/ha (N1 = Compost of Azolla, N2 = 50% Compost of Azolla plus 50% Urea and N3 = Urea) comprised the experimental factors. In this experiment, Licord had the highest seed yield and seed content of Sulphur. Integrated nutrition system showed superiority to other treatments for seed yield and seed content of macro nutrients such as nitrogen, phosphorus and Sulphur. But, the greatest seed content of potassium was observed in N1 treatment. Results showed that integrated application of nitrogen sources increased yield and seed nutrients content.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
109
123
https://ejcp.gau.ac.ir/article_1207_666c183869bcec3ebfb3ea0eea8c6f95.pdf
Effects of Drought Stress and Foliar Application of Iron and Zinc on Quantitative and Qualitative Characteristics of Two Species of Annual Medics
M.H.
Rashnoo
دانشجوی دکتری گروه زراعت، دانشگاه تربیت مدرس
author
Z.
Tahmasbi Sarvestani
دانشیار گروه زراعت، دانشگاه تربیت مدرس
author
H.
Heydari Sharifabad
استاد دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران
author
S.A.M.
Modares Sanavi
استاد گروه زراعت، دانشگاه تربیت مدرس
author
R.
Tavakkol Afshari
دانشیار گروه زراعت، پردیس کشاورزی و منابع طبیعی دانشگاه تهران
author
text
article
2013
per
To evaluate of drought stress and foliar application of zinc and iron on two annual medics species, experimental field was carried out with split factorial based on randomized complete block design in three replication with Treatments of foliar application (Controlled, Fe, Zn and iron+ zinc) and cutoff irrigation from (50% flowering , lower pod maturity,10 days before starting of flowering and control treatment). The results showed that leaf to stem ratio in scutellata (1.82) more than polymorpha (1.43). Drought stress reduced the amount of forage yield and pod yield were 27%, 33%respectively compared to control treatment. The number of pods per plant increased to compare with control 17.6 and 27.6 percent in the treatment of iron and iron + zinc, respectively. Zinc application treatment increased the number of pod per plant in scutellata and polymorpha species 81% and 177% respectivelly compared with control treatment. The number of seeds per pod increased in polymorpha species and (Zinc+Iron) 17treatment 58% comparison to control foliar application. However, the number of of seeds per pod in all treatments of foliar application increased 40-70% compared to control in scutellata species. The nitrogen fixation in the thirth level of drought stress was reduced 51 and % in scutellata and polymorpha respectivelly compared to control.(Iron + Zinc) application increased protein forage 23.3 and 21.7 in scutellata and polymorpha respectively.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
125
148
https://ejcp.gau.ac.ir/article_1208_2e77b289e28e66f9d77e8deb2442240f.pdf
Practical attitude to predict the production and economic profit of wheat cultivars (Triticum aestivum L.) in interference with feral rye (Secale cereale) using regression models
B.
Saadatian
دانشجوی دکتری گروه زراعت و اصلاح نباتات، دانشگاه فردوسی مشهد
author
M.
Kafi
استاد گروه زراعت و اصلاح نباتات،
دانشگاه فردوسی مشهد
author
F.
Soleymani
دانشجوی دکتری گروه زراعت و اصلاح نباتات، دانشگاه بوعلیسینا همدان
author
text
article
2013
per
In order to determine the practical method to predict economic production of wheat in competition with feral rye by using regression models, a factorial experiment was carried out based on randomized complete block design with three replications in Dargaz. Iran. Experimental factors were included wheat cultivars (Sayson, Alvand, Chamran and Sepahan) and feral rye densities (0, 20, 40, 60 and 80 plants m-2). The results showed that increasing feral rye density, reduced biological and grain yield of wheat cultivars. In contrast, biological yield, grain yield, spike number per unit area of weed and infestation percentage of weed seed was increased. Minimum and maximum of initial slope (Parameter I) of grain and biological yield loss was obtained in Sepahan and Chamran cv., respectively. At all density levels, grain yield of Alvand cv was superior to other cultivars. Maximum amount of biological yield, grain yield, spike number of weed and percentage of crop infestation was obtained in Chamran cv. In the range of acceptable infestation level of wheat to weed seed (0-7 Percent), the lowest and highest feral rye density that was led to same infestation, were estimated in Chamran and Alvand cv., respectively. The highest production and gross profit was obtained in both Alvand and Chamran cultivars. Generally, Alvand cv. in addition to the negative effect on weed production, had a high gross profit. So in tested area, mentioned cultivar is recommended for planting in feral rye infested fields.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
149
170
https://ejcp.gau.ac.ir/article_1209_e49067f4fee4aea6cc817b7c5bfe190d.pdf
Ranking factors causing the wheat yield gap in Gorgan
B.
Torabi
استادیار گروه زراعت، دانشگاه ولیعصر رفسنجان
author
A.
Soltani
استاد گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
S.
Galeshi
استاد گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
E.
Zeinali
استادیار گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
M.
Kazemi Korgehei
مربی گروه مدیریت، دانشگاه ولیعصر رفسنجان
author
text
article
2013
per
Ranking the viewpoint of experts and farmers is an approach to determine the factors causing the yield gap. For this purpose, two different questionnaire types but with same questions designed for both agricultural specialists and farmers. After answering, the questionnaires of agricultural experts and farmers were analyzed through AHP and entropy techniques, respectively. Both techniques determined and ranked the importance of factors affecting on wheat yield gap based on attributing relative weights to factors with respect to comments provided in the questionnaires. Analysis of different experts viewpoints through AHP method showed that inappropriate management of irrigation, lack of good varieties grown genetically, and inappropriate use of basic, broadcast and micro fertilizers are the most important factors causing yield gap in the studied area. The results of analysis of the viewpoints of farmers using entropy technique showed that the inappropriate amount of seed at planting, inappropriate use of micro fertilizer, inappropriate planting depth, lack of good cultivars grown genetically and seed loss at harvest are the most important factors causing wheat yield gap, respectively. With respect to inconsistency in the viewpoints of these two groups, it was recommended that it should be made a strong relationship between agricultural experts and farmers to transfer experts' viewpoints to farmers for decreasing yield gap.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
171
189
https://ejcp.gau.ac.ir/article_1211_2f3aeadd19a6181a57561b772bc99026.pdf
Study the relations between grain yield
and related traits in wheat by path analysis
S.
Navabpour
استادیار گروه اصلاح نباتات و بیوتکنولوژی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
G.
Kazemi
دانشآموخته کارشناسیارشد گروه اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
author
text
article
2013
per
In order to determine the best traits related to indirect increasing of grain yield, five wheat genotypes (Zagros, Tajan, Durum cul., Kohdasht and N-81-18 line) were evaluated by using randomized complete block design (RCBD) with 4 replications in research field of Gorgan University of Agricultural Sciences and Natural Recourses. The studied traits included leaf area index (LAI), crop growth rate (CGR), relative growth rate (RGR), net assimilation rate (NAR), number of tiller, number of spike per plant, number of grain per spike, spike weight, grain weight, biological yield, harvest index and grain yield. The most grain yield was belonged to N-81-18 line. This line showed most number of grain per spike and spike weight in comparison with other genotypes. The results showed, there was significant correlation between grain yield and harvest index in all genotypes. The results of path analysis showed spike weight had the most direct effect on grain yield, in most genotype. Among of growth indices LAI had most negative direct effect, since correlation between leaf area and grain yield was significantly positive; therefore, the last correlation should be via indirect effect.
Journal of Crop Production
Gorgan University of Agricultural Sciences and Natural Resources
2008-739X
6
v.
1
no.
2013
191
203
https://ejcp.gau.ac.ir/article_1210_0a54db4b1842ba10fc8263f2d29fb464.pdf