Orchard Dusting Versus Spraying

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Profitability Comparison Study of an Organic Almond Orchard Versus a Conventionally Farmed Almond Orchard in Stanislaus County

This study examined the differences in costs and profitability for established conventional and organic almond orchards in Stanislaus County, California. The study used a partial budgeting approach to compare cost and profitability for established orchards for 2010, and thus ignored transition costs. Data was obtained from UC Davis cost studies for organic almonds, and from the Green Valley Ran...

متن کامل

Rock dusting considerations in underground coal mines

Rock dusting to prevent coal dust explosions has been in widespread use in U.S. underground coal mines since the early 1900s. Underground coal mining technology has changed significantly over this same time period, becoming highly mechanized and produces finer coal dust particles which are more explosive. Despite the advances in mining technology, mine-wide dust sampling practices have remained...

متن کامل

On Pólya’s Orchard Problem

In 1918 Pólya formulated the following problem: “How thick must the trunks of the trees in a regularly spaced circular orchard grow if they are to block completely the view from the center?”(Pólya and Szegő [2]). We study a more general orchard model, namely any domain that is compact and convex, and find an expression for the minimal radius of the trees. As examples, solutions for rhombus-shap...

متن کامل

An Orchard Theorem

We describe a natural way to plant cherryand plumtrees at prescribed generic locations in an orchard.

متن کامل

Absorption of hexachlorophane from dusting powder on newborn infant's skin.

In a maternity hospital in which the umbilicus and trunk of healthy newborn infants were treated with 0.33% hexachlorophane dusting powder, the hexachlorophane content of blood was measured in mothers before delivery, in infants' umbilical samples at birth, and at 8 days of age in capillary blood samples. One mother and her baby had rather high blood concentrations of hexachlorophane, probably ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Economic Entomology

سال: 1921

ISSN: 1938-291X,0022-0493

DOI: 10.1093/jee/14.2.225