نتایج جستجو برای: dryland wheat yield

تعداد نتایج: 243102  

ژورنال: علوم آب و خاک 2007
جواد ترکمانی, , شاهرخ شجری, ,

This paper investigates the effects of wheat production risk and other socio-economic factors on the probability of adopting new seed technologies. Also, the effects of production inputs and production conditions are examined on wheat production yield and risk. Moreover, the relative risk of new seed varieties will be examined under different scenarios. To carry out the study, farm-level data ...

2017
J. D. Williams

Conservation tillage systems that reduce soil erosion and maintain or increase soil carbon offer long-term benefits for producers in the inland Pacific Northwestern United States but could result in reduced grain yields due to increased pressure from weeds, disease, and insect pests. Our objective was to compare runoff, soil erosion, and crop yields from a conventional tillage, wheat-fallow two...

حسینی فرادنبه, نیره‌السادات, محمودی, سهراب , کریم مجنی, حسن,

A field experiment was conducted to evaluate the interference effects of wild barley (Hordeum spontaneum L.) on wheat (Triticum aestivum L.) yield, in 2009. The effects of different densities of wild barley (0, 25, 50, 75, 100, 125 plants m-2) in interferences with wheat at density of 300 plants m-2 were studied in a completely block design with three replications. Results showed that with incr...

Wheat is the main focus of the economy of Kurdistan province in which the annual fluctuation of wheat yield is 4/11 times as affected by the climatic elements of the site. This study investigated the role of agro-climatic variables and indices on rainfed wheat yield in Kurdistan province. The data of planting area, amount of production, damages and yield of wheat of 31-year in 10 regions of Kur...

Journal: :European Journal of Agronomy 2022

Under dryland systems of the Mediterranean basin, water management is widely recognised critical for improving grain yield. It has been proposed that nitrogen (N) fertilisation may be a tool to increase yield by increasing use efficiency. We tested in multilocation-multiyear study four different areas Basin if durum wheat and barley respond positively N under rainfed cultivation. The involved 1...

Journal: :Agronomia colombiana 2022

In order to determine the best time use and adequate dose of four herbicides control weeds in dryland chickpea (Cicer arietinum L.) fields, we performed present experiment 4 x 5 m plots. Fourteen treatments were carried out that from 1 9 included trifluralin. Treatments 1, 2, 3 with increasing doses trifluralin (480, 720, 960 g ai ha-1) applied 30 days before planting. 4, 5, 6 15 7, 8 consisted...

Journal: :Journal of environmental quality 2008
J A Ippolito K A Barbarick

Biosolids land application for beneficial reuse applies varying amounts of trace metals to soils. Measuring plant-available or total soil metals is typically performed to ensure environmental protection, but these techniques do not quantify which soil phases play important roles in terms of metal release or attenuation. This study assessed the distribution of Cd, Cr, Cu, Mo, Ni, Pb, and Zn asso...

Journal: :به نژادی نهال و بذر 0
رضا حق پرست r. haghparast deputy dryland agricultural research institute, p. o. box 67145-1164, sararood, kermanshah, iran..معاونت مؤسسه تحقیقات کشاورزی دیم، صندوق پستی 1164-67145، سرارود، کرمانشاه رحمان رجبی r. rajabi مظفر روستایی m. roustaii مصطفی آقایی سربرزه m. aghaee sarbarzeh

line to/cal/3/7c//bb/cno/5/cal//cno/sn64/4/cno//bad/dar/3/kl/6/sabalan was received from icarda under international winter wheat improvement in 1999-2000 cropping season. based on its favorable agronomic characteristics, it was selected for further evaluations in advanced and elite yield trials in main research stations of dryland agricultural research institute (dari) and on farm yield trials ...

ژورنال: علوم زراعی ایران 2021

One way to increase crop yield per unit of area is to close the gap between actual and potential yield in cropping systems. This study was conducted to determine the factors that affeced wheat yield gap in Khorramshahr, Iran during 2018-2019 growing season. In this study 60 fields of different areas under cultivation, field management practices and grain yield yield levels were surveyed based o...

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