Results 91 to 100 of about 1,403,364 (309)
International Journal of AgronomyOptimizing organic fertilizer recommendations can be cost-effective and affordable for resource-poor farmers by increasing crop yield and income. This field experiment was conducted to determine the most effective vermicompost application method for ...
Kinfe Tekulu +5 more
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Reproductive Medicine and Biology, 2018 Purpose The authors previously revealed the association of the follicular fluid (FF) volume with oolemma stretchability following the gonadotropin‐releasing hormone (GnRH) antagonist protocol during intracytoplasmic sperm injection (ICSI).
Taketo Inoue +7 more
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A diminishing population whose every cohort more than replaces itself [PDF]
We observe that a dynamic population model can have period fertility that is always below replacement and cohort fertility that is always above replacement.
Robert Schoen, Stefan H. Jonsson
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Fertility decline in North-Central Namibia [PDF]
This study examines fertility decline in North-Central Namibia in the period 1960-2000. A Scandinavian-type parish-register system, established in the beginning of 20th Century and still in use, provided register-based data for fertility analysis ...
Harri Siiskonen +2 more
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Scientific ReportsSmoking of classic cigarettes has been well-established as a health risk factor, including cardiovascular, neurological, and pulmonary diseases. Adverse effects on human reproduction have also been shown. Smokers are assumed to have a significantly lower
Tom Trapphoff +3 more
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Practical fertilization in maize with organic fertilizers
Practice Abstract, 2018 Maize is one of the most important crops, especially on dairy farms. Because dairy farms are so nutrient-rich, they are often associated with nitrate leaching. To avoid N leaching during the winter period, the implementation of catch crops is important. Together with root fertilization and organic fertilizers, nitrogen can be used very efficiently and
openaire +4 more sources
Postponement and recuperation of Belgian fertility: how are they related to rising female educational attainment? [PDF]
Fertility trends in Europe after 1970 are routinely referred to in terms of the postponement of fertility. The shortening of the effective reproductive lifespan and its association with post-materialist values have raised questions as to whether ...
David De Wachter, Karel Neels
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The increasing importance of economic conditions on fertility [PDF]
This paper investigates whether there has been a fundamental change in the importance of economic conditions on fertility. Through the 1980s econometric studies had found at best a mixed, neutral or negative effect of economic conditions on fertility ...
Deniz D. Karaman Örsal +1 more
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Systematic ReviewsBackground The number of re-biopsied blastocysts is widely increasing in IVF cycles and concerns regarding retesting, which involves double biopsy and vitrification-warming, have been raised.
Alessandra A. Vireque +4 more
doaj +1 more source