نتایج جستجو برای: expansion of rain irrigation

تعداد نتایج: 21178589  

2010
C. A. Gonzalez-Benecke

We studied the effect of water availability on basal area growth and wood properties of 11-year-old loblolly pine (Pinus taeda L.) trees from contrasting Florida (FL) (a mix of half-sib families) and South Carolina coastal plain (SC) (a single, half-sib family) genetic material. Increasing soil water availability via irrigation increased average wholecore specific gravity (SG) and latewood perc...

2017
Eshetu Tefera

Livelihoods of the rural people of Ethiopia depend on agriculture. However, erratic nature of rain and prevalence of drought in the country make agricultural production a challenge. To counter this problem, use of the available water resource for irrigation development is the most promising option. Ketar small scale irrigation scheme is found in Ketar-Genet Peasant association, Tiyo District, A...

2002
Hermann Behling

To study the carbon storage increase of major forest ecosystems in tropical South America, such as Amazon rain forest, Atlantic rain forest, semideciduous forest, and Araucaria forest, the Last Glacial Maximum (LGM) and the early Holocene vegetation cover were reconstructed by pollen records. Marked forest expansion points to a significant total carbon storage increase by tropical forests in So...

Journal: :Ingénierie Des Systèmes D'information 2021

Clouds play a vital role in climate prediction. Rainfall prediction also majorly depends on the status and types of clouds present sky. Therefore, cloud identification is most exciting topic meteorology attracts researchers from other areas. This paper presents transfer learning technique to predict based ground-based Cloud images responsible for rains. It will estimated by identifying type tak...

2015
Tianduowa Zhu M. W. Ertsen N. C. van der Giesen

The Hohokam, an irrigation-based society in the American South West, used the river valleys of the Salt and Gila Rivers between 500 and 1500 AD to grow their crops. Such irrigated crops are linking human agency, water sources and the general natural environment. In order to grow crops, water available through rain and river flows needs to be diverted to land where the plants are grown. With a f...

2008
Paul J Block

Ethiopia is at a critical crossroads with a burgeoning population, a severely depressed national economy, insufficient agricultural production, and a minimal number of developed energy sources. This study assesses how investment in and management of water resources, together with related policy reforms, may mitigate the negative effects of hydrologic variability on the performance and structure...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده کشاورزی 1388

این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...

ژورنال: علوم آب و خاک 2016
زندپارسا, شاهرخ, سپاس‌خواه, علیرضا, مهبد, مهدی, پرویزی, سعیده,

In agricultural development many factors such as weather conditions, soil, fertilizer, irrigation timing and amount are involved that are necessary to be considered by the plant growth simulation models. Therefore, in this study, the values of soil water content at different depths of soil profile, dry matter production and grain yield of winter wheat were simulated using AquaCrop and WSM model...

Journal: :International Journal of Enviornment and Climate Change 2022

The existing irrigation system namely drip and sprinkler adds cost to production. So, an alternate low-cost (rain hose irrigation) was compared with other systems. study proposed find out the optimum soil moisture by selecting a proper that supports management, enhanced productivity, high water use efficiency, also involves less on treatment comprises different methods of (drip, sprinkler, rain...

Journal: :Journal of experimental botany 2006
S S O Burgess T M Bleby

Evidence is increasing to suggest that a major activity of roots is to redistribute soil water. Roots in hydraulic contact with soil generally either absorb or lose water, depending on the direction of the gradient in water potential between root and soil. This leads to phenomena such as "hydraulic lift" where dry upper soil layers drive water transfer from deep moist layers to the shallow rhiz...

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