نتایج جستجو برای: cultivated area of all irrigated crops decrease and rainfed crops rainfed wheat

تعداد نتایج: 24102885  

Journal: :Remote Sensing 2011
Muralikrishna Gumma Prasad S. Thenkabail Fujii Hideto Andrew Nelson Venkateswarlu Dheeravath Dawuni Busia Arnel B. Rala

Maps of irrigated areas are essential for Ghana’s agricultural development. The goal of this research was to map irrigated agricultural areas and explain methods and protocols using remote sensing. Landsat Enhanced Thematic Mapper (ETM+) data and time-series Moderate Resolution Imaging Spectroradiometer (MODIS) data were used to map irrigated agricultural areas as well as other land use/land co...

Journal: :پژوهش های تولید گیاهی 0

in order to study stress tolerance indices and identifying tolerance genotypes to drought stress condition 16 genotypes of durum wheat were assessed in a randomized complete block design with four replications under two irrigated and rainfed conditions in the research station located in west of iran ilam in 2006- 2007. results showed that variation in among durum wheat genotypes under irrigated...

Journal: :حفاظت گیاهان 0
شایلین لطفی مجید رحیمی زاده

in order to evaluate the response of russian knapweed seeds to cardinal temperatures a factorial experiment was conducted base on completely randomized design with 3 replications. russian knapweed seeds (collected from irrigated and rainfed wheat fields), and germination temperatures (constant temperatures of 10, 15, 20, 25, 30 and 35° c) were used as first and second levels of the experiment. ...

Journal: :Environmental Research Letters 2021

Abstract Increasing population and a severe water crisis are imposing growing pressure on Iranian cropping systems to increase crop production meet the rising demand for food. Little is known about separate contribution of trends variability harvested area yield in severely drought-prone areas such as Iran. In this study we (a) quantify importance 12 most important annual crops under rainfed ir...

2011
Guihua Chen Ray R. Weil

The yield of rainfed crops is commonly limited by the availability of soil water during the summer growing season. Channels produced by cover crop roots in fall/winter when soils are relatively moist may facilitate the penetration of compacted soils by subsequent crop roots in summer when soils are relatively dry and hard. Our objective was to determine the effects of fall cover crops on maize ...

Elham Mahtabi Ezatollah Farshadfar, Mohammad Mahdi Jowkar

Chickpea (Cicer arietinum L.) is one of the most important crops worldwide that is a subject of many plant breeding programs in many countries. In addition, climates are changing all over the world and drought becomes one of the most serious problems versus yield of crops. In order to screen drought tolerant genotype in Chickpea, twenty genotypes were tested under rainfed and irrigated...

Elham Mahtabi Ezatollah Farshadfar, Mohammad Mahdi Jowkar

Chickpea (Cicer arietinum L.) is one of the most important crops worldwide that is a subject of many plant breeding programs in many countries. In addition, climates are changing all over the world and drought becomes one of the most serious problems versus yield of crops. In order to screen drought tolerant genotype in Chickpea, twenty genotypes were tested under rainfed and irrigated...

Journal: :Journal of experimental botany 2016
P W Hendriks J A Kirkegaard J M Lilley P J Gregory G J Rebetzke

Genetic modification of shoot and root morphology has potential to improve water and nutrient uptake of wheat crops in rainfed environments. Near-isogenic lines (NILs) varying for a tillering inhibition (tin) gene and representing multiple genetic backgrounds were phenotyped in contrasting, controlled environments for shoot and root growth. Leaf area, shoot and root biomass were similar until t...

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