Our age adjustment delivers a measure that could be called ‘completed polygyny’ by analogy to ‘completed fertility’. The populations exhibiting surprisingly high levels of polygyny by our definition—e.g. the Ache´, Hadza, Maya, English and Krummho¨rn populations—reflect the prevalence of serial monogamy, not polygyny in the usual sense of multiple concurrent wives. Although most anthropological analyses …
Monthly Archives: May 2023
Agricultural robots will typically execute computed motions for a very large number of times
Dynamic, on-line route planning has recently received attention in the agricultural robotics literature for large-scale harvesting operations because of its economic importance and the availability of auto-guided harvesters and unloading trucks. Reported approaches compute a nominal routing plan for the harvesters assuming some initial yield map, and then they route the support units based on the …
Two non-suckering clonal root stocks that impart vigor to scions were released
In addition, hazelnut trees on C. colurna root stocks are frequently more variable in size and yield than self-rooted trees of C. avellana. In a trial using ‘Barcelona’ as a scion cultivar, the graft unions were overgrown and nut yields declined with age, at ~20–25 years. Due to these disadvantages, the Faculty of Agriculture, at …
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The biological reality of ripening is that its natural end is senescence
Temperature, humidity, ethylene levels, and the storage oxygen-to-carbon dioxide ratio must be controlled to slow down maturation and senescence in order to maintain produce shelf-life and quality. Low temperatures are used to reduce respiration, thereby extending shelf-life, but also have the added benefit of suppressing water loss, shrinkage, and fungal growth, which can occur due to …
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This follows the practice described for nearly all peoples who grew tobacco in the Far West
Plants have flowered and seeded here for at least the past thirty years, serving as a ready seed source for downstream dissemination.In 2004, an event occurred which ultimately helps clarify the relationship between regional riverine and roadside-growing plants and the surrounding flora by providing a biogeographical context for the meager ethnographic information regarding tobacco use …
Fruit sizes on sweet orange tend to run somewhat smaller than average
In California, they are larger than on Cleopatra mandarin, but smaller than those grown on Rough lemon, sour orange, or Troyer citrange. Seedlings of sweet orange are resistant to verrucosis according to Klotz . Again, this is not a problem in California, but in nurseries or grown trees it can be a problem in areas with …
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The greatest stress was on trifoliate orange and lowest on Rough lemon
The cultural practices within an orchard can materially affect root systems. In Ceylon , Gandhi cites a difference in citrus root distribution between irrigated areas and rainfall areas. However, when he grew grapefruit trees on Rough lemon with various degrees of cover crop the citrus roots would not compete with the cover crop. They either turned back …
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The roots of the sweet orange do not penetrate as deep or as far horizontally as Rough lemon
Notably, although recruited from across the United States, nearly all participants were sheltering in place at the time of study enrollment due to the COVID-19 pandemic, which may have affected substance use patterns and mood as well as interest in a digital health intervention. Notably, however, alcohol sales in the United States increased during the COVID-19 …
Budded trees on Glenn citrangedin also showed bud union crease
Several trees of Webb Red Blush grapefruit on Tavares limequat also showed problems at the bud union.Olson postulated that since seedlings of calamondin, lemonquat, red grapefruit, and sweet orange grew normally, whereas certain budded combinations showed bud union crease, it would seem possible that the disorder was related to interaction between specific root stock and scion varieties. It …
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The wrapped buds were then covered with soil to prevent them from freezing
Although knowledge of the art of budding, or grafting, goes back several millennia , it was only in the late 1800’s that budding of citrus became a general practice. The change was partly due to the introduction of superior varieties like the Washington navel orange, the Valencia orange and other named cultivars in which it …
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