Irrigation management for some maize cultivars under different plant populations

The effect of different irrigation intervals [10, 15 and 20 days] and plantpopulations [15, 20 and 30 thousand plants/fed.] on growth, yield and itscomponents as well as grain chemical composition of three maize cultivars,i.e. single cross 10 [SC 10]. Three way cross 310 [TWC 310] and Giza 2 werestudied. Two field experiments were carried out during 1998 and 1999 seasonsat the Central Administration Farm of the Agricultural Extension, El-FashnDistrict, Beni-Sweef Governorate, Egypt. The results showed that prolongingirrigation intervals up to 20 days decreased significantly growth patternsstudied after 70 and 90 days from sowing as well as grain yield and itscomponents. Total carbohydrate, crude protein and oil percentages in maizegrain were significantly affected by irrigation intervals. The data showedthat increasing plant population up to 30 thousand plants per feddan led to asignificant increase in plant height and final grain yield per feddan; whereas,stem diameter and ear leaf area as well as grain yield/plant and itscomponents were significantly decreased. Total carbohydrates and crudeprotein percentages were significantly reduced by increasing plant populationup to 30 thousand plants/fed., while oil content was insignificantly affected. Significant differences were found among the tested maize cultivars withrespect to growth patterns, yield and its components as well as the chemicalcomposition of grain. The data clearly showed that SC 10 cultivar was superiorin final grain yield than the two other ones. It also recorded the highestgrain yield [3.61 t/fed.] against 3.45 and 3.27 for TWC 310 and Giza 2,respectively. The results revealed that soil moisture stress has a seriouseffect on grain yield. The application of irrigations every 10 days, combinedwith planting SC 10 or TWC 310 cultivars at density 30 thousand plants/fed. could be recommended to obtain the best grain yield

Physiological response of two soybean cultivars grown under water stress conditions as affected by CCC treatment

Water stress significantly decreased plant height, number of both leaves and branches, total leaf area, dry weight of shoot per plant as well as yield and its components. A similar tendency was generally noticed when soybean plants were treated with CCC. However, CCC treatment significantly increased pods number and weight of seeds/plant. Decreasing the available soil moisture content significantly reduced the content of chlorophyll a, chlorophyll b and carotenoids in soybean leaves. Reversely, CCC treatment significantly elevated the concentration of photosynthetic pigments compared with untreated plants. Protein content was increased obviously whether the plants were subjected to water deficit or treated with CCC. Protein content in soybean seeds was significantly increased by increasing water stress, and was accompanied by decrease in oil percentage. However, CCC treatment had no significant effect on protein and oil content

Bone activity under the influence of estrogen replacement alone and with testosterone in ovariectomized rats

Replacement therapy with estrogen alone or in combination with testosterone was studied in ovariectomized rats. Bone activity was estimated by serum alkaline phosphatase, calcium and parathyroid hormone and urinary excretion of calcium. It was found that estrogen replacement resulted in considerable fall in serum calcium [14-18%], alkaline phosphatase [20-25%] and urinary calcium/creatinine ratio [28-34%]. Administration of estrogen combined with testosterone resulted in more decrease in all of these values. Parathyroid hormone returned to normal serum level after estrogen therapy and significantly increased more than normal levels after the combined therapy. These results proved that replacement therapy with estrogen in combination with testosterone is more effective than estrogen alone in treating osteoporosis after oophorectomy

Effect of dietary proteins on serum lipid profiles in immature and mature rats

This study was done to evaluate the effect of dietary protein on serum lipids in mature and immature male rats. Two groups of rats were used, immature [3-month old] and mature [9-month old], they were divided according to the type of food provided into 2 subgroups: Control subgroup fed on balanced diet [BD] mixed with 5% [w/w] casein and subgroup 2 fed on BD mixed with 5% [w/w] row soybean. All groups were fed their special diet regimen for four weeks. Serum triglycerides, total cholesterol, high density lipoprotein cholesterol [HDLC] and low density lipoprotein cholesterol [LDLC] were measured. Soybean protein dict caused highly significant decrease in serum triglyceride total cholesterol and HDLC levels in all groups of animals compared with controls fed on casein protein. While LDLC level in all groups showed insignificant decrease

Submandibular salivary calculi in an unusual form, and a developing technique for surgical removal

The chemical composition of the stones was 75% calcium phosphate, 13% calcium carbonate 6% calcium oxalate, 3% sodium chloride and 3% sodium thiocyanate. The patients were periodically seen for assessing the condition of the submandibular gland of the operation side usually in those cases as the gland gets chronically inflamed due to the partial obstruction, the change in the gland is reversible and the gland recovers after removal of the cause. Postoperative sialography was contra- indicated in these cases for a period from 3-6 months to avoid perforation of the operated duct during the infection of the die. In these cases all the glands were recovered with no swellings or pain and the flow of saliva was normal after the operation and there was no need for making sialogram for any of these cases and this is due to the shape of the calculus which was rod shape making only partial obstruction to the secretion of the gland with no severe retention of the saliva hence the glands were not seriously affected

Clinical experience in the management of ameloblastoma of the mandible with prolonged follow-up

Eighteen cases of ameloblastoma are reported and treated with modified conservative resection. All cases were followed up clinically and radiographically for a period of 4 years. One of these cases was followed up for twenty years. No evidence of recurrence was encountered in all cases

Effect of soft laser on healing of tongue wounds

In the present study the effect of soft laser on healing of intra oral inflicted wounds on the dorsal surface of the tongue in albino rats was investigated. The lased tissues exhibited enhanced healing evidenced by more collagen formation than in the control animals which denotes that soft laser has significant effect on wound healing