Effect of Addition of Organic Fertilizer and Rootstock in Lemon Transplants Exposed to Water Stress

Abstract

This experiment was carried out in lath house at University of Baghdad / college of Agricultural Engineering Sciences /Department of Horticulture and Landscape design during the two season 2019 and 2020 .The experience was conducted according to Split-split plots Within Design (RCBD) By three factors, the first factor was twoirrigation Intervals (every 3, 6 days), the second factor was three of rootstock (Volcamariana, Swingle Stromelo and sour orange) and the third factor organic fertilizer, was three concentrations, which is (0, 2.5 and 5 ml. L -1 /plant). results showed that irrigation Intervals had a significant effect It has given (every 6 days) increase in Proline and Transpiration rate and the effectiveness of the enzyme peroxidase in the leaves,The citrus rootstock have exceed with each other in the mentioned characteristics, while the organic fertilizer increased leaf water potential (less negative), the leaf area, percentage dry weight of leaves and the activity of the peroxidase enzyme in the leaves.

The Growth Response of Christi Thorn Seedlings to the Dates and Concentrations of (Ticamine Max) and the Liquid Organic Fertilizer (Vevter)

“…In addition to its role in improving the soil's physical, chemical, and vital properties, and in lowering the soil's pH to increase the availability of major and minor nutrients due to its content of organic matter, the addition of a concentration of 4 ml.L -1 of the liquid organic fertilizer in the characteristics under study can also be credited with the significant superiority observed. As a result, the plant was able to take in more of the nutrients it needed to carry out its important functions, such as boosting the efficiency of photosynthesis in the production of carbohydrates used in vegetative growth [10,11].…”