Page Introduction 1 Alteration of the environment 2 Keduced sunlight 3 Shading with tall-growing plants 4 Shading with muslin tents 6 Shading with low and densely growing plants 7 Spraying and dusting 9 Soil management 10 Irrigation and fertilization 11 Page Soil management—Continued. Soil dryness and preirrigation 13 Green manuring _ 13 Green manure with lime and fertilizers.. 14 Time of plant...

Editor – In a recent letter (1) Dr Christian Lengeler dismisses as invalid our comparisons (2) of recent trials with pyrethroid-treated nets versus trials 20–40 years ago with house spraying of non-pyrethroid insecticides. One of his reasons is that the initial intensities of malaria transmission were different in the trials compared. Lengeler may postulate that the lower intensity of transmiss...

In this study, we investigated the effects of organic waste and moisture superabsorbent on the amount of available water and delay in moisture equivalent of permanent wilting point (PWP) in soil. In the first phase (soil incubation phase), 12 treatments were studied in a completely randomized design at the Soil Science Laboratory of Science and Research Branch, Tehran. The treatments c...

in order to study the effect of fertilizing treatments and limited irrigation regimes on yield and yield components of isabgol, a field experiment was conducted at experimental farm of college of agronomy and animal sciences, university of tehran. the experimental design was a split plot based on a randomized complete block design with three replications. in this research four irrigation regime...

introduction roselle (hibiscus sabdariffa l.) as a medicinal plant belongs to the malvacea family. their active ingredient increases under water stress. humic acid bacteria derived from humus and other natural resources have hormonal effects and can improve nutrient absorption to enhance performance especially under stress conditions . materials and methods this experiment was conducted in the ...

This study focused on the dissipation of propanil and 3,4 dichloroaniline (3,4 DCA) over time in the soil, field water, inlet water, and outlet water of paddy fields under three management systems: conventional water seeding (CON), conventional water seeding with supplied liquid manure (LMA), and dry seeding (DRY). Propanil dissipation in water was also investigated under laboratory conditions....

INTRODUCTION The purpose of this study was to compare the debridement efficacy of EndoVac irrigation versus conventional needle irrigation in vivo. METHODS Seven adult patients with a total of 22 matched pairs of single-canaled vital teeth with fully formed apices were recruited. Canals were instrumented to a master apical file size #40/.04 taper. One tooth from each matched pair was irrigate...