نتایج جستجو برای: soil fertility management

تعداد نتایج: 1055683  

Journal: :Journal of the Bangladesh Agricultural University 2014

Journal: :International Journal of Agronomy 2023

Declining agricultural productivity has been a challenge worldwide and especially in Sub-Saharan Africa (SSA). Low attributed to factors such as poor farm management practices, soil moisture stress, infertility, degradation, among others. The nations the SSA are prone insufficient crop yields due their inadequate capacity adapt good practices that support integrated fertility water (ISFWM) prac...

اکبری نیا, مسلم, سلیمانی رحیم آبادی, معصومه, کوچ, یحیی,

According to importance of forests, enforcement of accurate and systematic management about them is necessary; in this regard recognition of soil quality is essential principles. With the aim of studying soil macroelement in each of Populus deltoiedes, Alnus subcordata, Taxodiom distichum stands and around uncultivated area (control), 8 samples taken from each of 0-15cm and 15-30cm depth. Soil ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده علوم اجتماعی 1389

the study aims to achieve research and testing of hypotheses survey techniques and questionnaires to collect information used. 61 questions in the questionnaire included 15 questions and 46 open questions according to research in the study population, girls and their mothers as the value of different children investment should be. mothers according to the research community benefits from havi...

2017
Paul J A Withers Robin A Hodgkinson Alison Rollett Chris Dyer Rachael Dils Adrian L Collins Paul E Bilsborrow Geoff Bailey Roger Sylvester-Bradley

Soil phosphorus (P) fertility arising from historic P inputs is a major driver of P mobilisation in agricultural runoff and increases the risk of aquatic eutrophication. To determine the environmental benefit of lowering soil P fertility, a meta-analysis of the relationship between soil test P (measured as Olsen-P) and P concentrations in agricultural drainflow and surface runoff in mostly UK s...

2004
R. H. GROVES

Soil temperature, soil moisture and soil fertility were determined empirically at 63 predominantly hill sites in the South Island, New Zealand. Soil temperatures were measured at a depth of 0.5 m in four seasons and gave a standard deviation of mean annual temperature between sites of 2.2 °C. Soil moisture levels, as available water in a 0-0.5 m profile, measured seasonally, gave a standard dev...

2016
Tsunehiro Watanabe Karibu Fukuzawa Hideaki Shibata

In forest ecosystems, a change of soil nitrogen (N) cycling after disturbance is regulated by various factors. Sasa dwarf bamboo (hereafter referred to as Sasa) is an understory plant that grows thickly on the forest floor in northern Hokkaido, Japan. However, the ecosystem function of Sasa after disturbances in the soil N cycling is not fully understood. The purpose of this study was to determ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید