IMPACT OF SOME SOIL AMENDMENTS ON PROPERTIES AND RODUCTIVITY OF SALT AFFECTED SOILS AT KAFR EL-SHEIKH GOVERNORATE

Abstract

TWO FIELD trials were conducted in salt affected soils at special farm Mars El-Gaml village, Kafr El-Sheikh Governorate, Egypt to study the effects of amending soils with gypsum, compost, ammonia injection and subsoiling on some soil physio-chemical properties as well as the outcome yields of barley (winter 2016/2017) and rice (summer 2017). Seven treatments were tested to attain this aim using a complete randomized block design (CRBD) with three replicates. The results showed that improving soil chemical properties such as soil salinity and soidicity took place through amending soils with gypsum requirements (SGR) combined with 4Mg. from compost fed.-1 and subsoiling in both seasons (1 feddan = 0.42 ha). Such treatments recorded a positive effect on soil Ca/Mg ratio in root zone (0-60 cm) in both seasons. It could be observed that the application of SGR combined with compost and subsoiling was superior to other treatments in decreasing of the soil bulk density and increment both of the soil porosity and soil infiltration rate. Yield of barely and rice were highly significantly increased and recorded highest values due to application of gypsum combined with ammonia and subsoiling. Economic efficiency recorded the highest values due to application of SGR and ammonia injection with subsoiling in both seasons. Consequently, application of SGR with ammonia and subsoiling treatments could be used economically to improve the yield of barely and rice. Some physio-chemical properties of salt affected were improved by application of SGR combined with compost and subsoiling at Kafr El-Sheikh Governorate..