Effect of using non - conventional and traditional organic wastes on some physical properties of clay soil and peanut productivity in Akkar Plain

This research was conducted in 2016c, at the Zahid Western Research Station in Akkar Plain region of Tartous Governorate, the objective of this research is study the effect of non-conventional organic waste (compost of garbage, sewage sludge) and cow manure on the physical properties of clay soil in the region. Wastes was added to the soil at a rate of (0 - 10 - 20 – 30) t/ha, in order to determine the effect of the difference in the quantity added on physical properties of the soil and peanut productivity.

Effect of different levels of organic fertilizer and deficit irrigation on the morphological development and the productivity of lettuce

A field experiment was carried out in Hout research station- Agriculture research center in Swaida – General Commission For Scientific Research Agricultural during the growing season of 2015-2016 to study the effect of different levels of deficit irrigation with different levels of town refuse compost (TRC)on some morphological parameters and the productivity of lettuce and compare it with the common mineral fertilizers. The experiment was designed as a split block design with three levels of irrigation, each level has four fertilizing treatments and control with three replicates. The research has studied the plant height (H), the number of its leaves (N) ,the leaf area (LAL), the plant's leaves area (LAP), the leaves area index (LAI), in addition to the lettuce head's fresh weight and the total productivity of the planted area. The irrigation and fertilizing interaction results indicate to the obvious positive effect of the organic additions on the productivity parameters and the efficiency of deficit irrigation, and the significant superiority of T11 treatment in all of the measured parameters in compare with the other treatments with an increased final yield of %169 comparing with T15 and % 428 comparing with T35. The results also indicate to the possibility of saving %25 of the consumed amount of irrigation water by using TRC instead of mineral fertilizer , and reveal that the organicmineral combination achieved a better yield with percentages of ( 29- 44 – 53 )% comparing with single mineral fertilizer in the three studied irrigation levels (T1-T2-T3) respectively. These results give the farmer a wide range of possibilities to choose what suits his available productivity needs , and a clear idea about the expected yield according to the chosen treatment.