This investigation was conducted at Barrage Station (BHRS), Horticultural Research, Kalubia Governorate, Egypt, to get some new and promising pea lines (Pisum sativum L.) using pure line selection method on the basis of genetic variability. Selection was performed between or within four pea populations of Master Bcultivar. The populations were collected from four different regions in Egypt and subjected to selection procedure during 2012/2013, 2013/2014 and 2014/2015 growing seasons. The investigation intended to study different traits of growth and yield and its components viz., No. of days to flowering, No. of first flowering node, plant length, No. of branches per plant, pod length, pod width, pod thickness, pod weight, No. of seeds per pod, weight of seeds per pod, No. of pods per plant, weight of 100 seeds, shelling percentage, pod yield per plant and seed yield per plant. The target of this study was to improve pea yield and its components as well as earliness of yielding. The analysis of variance revealed highly significant differences among genotypes for most of the studied characteristics, indicating ample scope of selection. Most characteristics showed a higher heritability coupled with higher genetic advance through two cycles of selection indicating that these characteristics are stable and can be improved through selection based on phenotypic observations. Twenty lines were obtained from selection program and were compared against the baseline populations in addition to check cultivar (Entsar1).Results showed significant differences among lines for most studied traits. Selection program resulted in genotypes or lines given symbols of H3, G7, N1, N3, G2, G1 and K2 that considered promising lines.  These lines have good pods traits, higher productivity and earliness of flowering. Simple correlation coefficient analysis revealed that greater emphasis should be given to the traits of No. of branches and No. of pods per plant along with pod length, pod width, No. of seeds and weight of seeds per pod for yield improvement.

The safe re-use of wastewater for agriculture is a desired goal in many arid zone countries. The potential of greywater as alternative irrigation source for vegetable crops was investigated. Tomato, pea and cantaloupe plants were drip irrigated with both fresh Nile water and greywater to access the impact on yield production and associated environmental and health risks. The biological properties of the two different sources of water clearly indicated that greywater was extremely higher in bacterial content compared with fresh Nile water. Pea plants showed significantly higher yield irrigated with fresh Nile water, however, tomato and cantaloupe plants gave significantly higher yield irrigated with greywater. Generally, the coliform populations in untreated greywater irrigated plants were higher than those irrigated with Nile water in all tested vegetables. The percentages of increasing in total coliform in untreated-irrigated greywater vegetables were 27.95%, 34.55% and 41.4% for pea, tomato and cantaloupe (averaged over outer and inner fruit tissues), respectively. Unexpectedly, central part of fruits for pea and tomato had highest coliform counts when compared to the outer surface using both Nile and untreated greywater. Overall, irrigation with greywater increased soil bacterial content by 15% while fresh Nile water increased it by 13% at the end of the experiment. In addition, greywater elevated the content of soil total coliform by 52% where fresh Nile water increased it by 30%. The results of this study indicated that untreated greywater should not consider as an alternative irrigation source for edible crops such as vegetables. In current investigation, the beneficial effects in tomato through giving significantly higher yield with greywater became worthless after the enormous fecal contamination that was detected in fruits. Several considerations must be adopted to minimize the health and environmental risks associated with greywater reuse in irrigation of vegetable crops.