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sur le développement des zones arides et semi-arides

Titre : EFFECT OF DIFFERENT LEVELS OF SALINITY AND ANTI-TRANSPIRATION ON THE GROWTH AND FODDER VALUE OF PANICUM PLANTS

Auteur : EL-Wardany, ADEL SAID HASSAN ALI.

Etablissement de soutenance : Ain Shams University

Grade : Doctor of Philosophy (PhD) in Agricultural Sciences 2022

Résumé
This study was carried out at the private farm in Ismailia and the regional center for Food and Feed (RCFF), Agricultural Research Center (ARC), ministry of Agriculture, Egypt. The aim of this study the effect of different levels of salinity and anti-transpiration on growth characters, chemical composition, and Value of Fodder for Panicum maximum plants during spring, summer, autumn and winter seasons through 72 treatments to experiment with the Panicum maximum plants [3 anti-transpiration x 4 salinity x 6 replecates]. Two types of anti-transpiration molasses (sugarcane) (5 ml / l), kaolin (50 g / l) and control. Using four levels of salinity (Rasheed salt) [well water in Ismailia (control) - 2000 - 4000 - 6000 ppm]. The results showed the highest plant height (123.77 cm) with the salinity of the well water (Control) with Kaolin anti-transpiration during the summer season. However, the results showed the largest number of branches and number of leaves (863.43, 325.10, respectively) with the salinity of the well water (control) with the anti-transpiration of molasses during the spring season. While the results showed the highest fresh and dry weight (298.20 and 1323.02) g/m2 respectively, and the largest leaf area (7542.77) cm2/m2 with the salinity of well water (control) with anti-transpiration kaolin during the summer season. and The results showed the highest percentage of protein (23.49%) with the salinity of 4000 ppm with anti-transpiration molasses during the winter season, while the lowest percentage of protein (15.15%) with the salinity of well water (control) with anti-transpiration kaolin during the summer season. The lowest percentage of fiber derivatives (hemicellulose cellulose, lignin, NDF, ADF, and ADL) at the beginning of growth during the spring and summer season at the level of salinity of the well water (control) and 2000 ppm. The results showed (DMD) comparison for Panicum maximum with alfalfa. A close percentage (DMD) was recorded in the kaolin (% 96.62) compared to other anti-transpiration levels with a salinity of 6000ppm compared to other salinity levels. The results showed (ME (Mj/KG DM), (ME (Kcal /KG DM), and OMD) comparison for Panicum maximum with alfalfa. Panicum recorded a higher percentage of alfalfa with control salinity with kaolin, with salinity 2000ppm with molasses, and with salinity 4000ppm with control and kaolin during the spring season. In conclusion, the idea of producing Panicum maximum is acceptable from a technical point of view. Due to the absence of forages green during the summer in Egypt.

Présentation étendue (EULC)