نتایج جستجو برای: subsoiling at soil depth of 40
تعداد نتایج: 21402807 فیلتر نتایج به سال:
Different soil management systems can change the sugarcane yield and quality parameters for sugar/ethanol production. The objective of this study was to evaluate effects subsoiling on inter-row ratoons after second harvest productivity technological quality. Productivity estimated in tonnes per hectare (TSH), were apparent sucrose percentage (Pol) total sugar recoverable (TRS). measured hectare...
drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...
current study was carried out with aim to evaluate the effect of pressurized irrigation methods and furrow irrigation method with municipal effluent on distribution of salinity and moisture in the soil profile. the experimental study was designed by split plot layout with three irrigation methods including furrow, surface drip (sd) irrigation and subsurface drip irrigation (ssd) and two water q...
laboratory and greenhouse experiments were conducted to determine the effects of drought and salinity stress, temperature, ph and soil depth on rye germination and emergence in gorgan university of agricultural science and natural resources. optimum temperature for germination between 25 to 34.51 oc and base and ceiling temperatures were estimated as 3.3 and 40 oc, respectively. this volunt...
The effects of tillage systems on soil properties and crop productivity have been the subject many studies to ensure sustainable productivity. Aims: In study, different methods applied in intermediate period wheat-maize rotation quality corn yield elements were investigated pre-planting (PP) plant growth (PGP) corn. Methods: Conventional (CT), minimum with subsoiling chisel (MT1), (MT2), (MT3) ...
In agriculture, cow manures are used to enhance soil fertility and productivity. Escherichia coli is the most common fecal coliform in cow manure and considered as an index for microbial contamination of groundwater resources. The objective of this study was to investigate the transport of Escherichia coli (released from cow manure) through the field soil. Lysimeters (with internal diameter of ...
vocabulary as a major component of language learning has been the object of numerous studies each of which has its own contribution to the field. finding the best way of learning the words deeply and extensively is the common objective of most of those studies. however, one effective way for achieving this goal is somehow neglected in the field. using a variety of activities such as games can r...
Current study was carried out with aim to evaluate the effect of pressurized irrigation methods and furrow irrigation method with municipal effluent on distribution of salinity and moisture in the soil profile. The experimental study was designed by split plot layout with three irrigation methods including furrow, surface drip (SD) irrigation and subsurface drip irrigation (SSD) and two water q...
abstract information on spatial and temporal variations of soil hydraulic conductivity (k) is essential to improve soil and water management. however several techniques have been proposed for measuring of soil hydraulic conductivity above water surface table, but reliability and easy use of these methods in various conditions were always concern for engineers. the purposes of this study are mea...
Tillage management is a direct factor in affecting soil quality, which key sustainable agriculture. However quality evaluation needs significant manpower, material resources and time. To explore the sensitive indicators of affected by tillage management, eight physical chemical properties under three managements, including plow tillage, subsoiling rotary were determined long-term experiment Nor...
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