EFFECT OF IRRIGATION WATER QUALITY AND SOME PRACTICES OF ORGANIC FARMING ON CROP PRODUCTIVITY, QUALITY AND SOIL FERTILITY

Abstract

Three field trials were conducted at Al-Betaia village – Mashtoul El-Souk District –Sharqia Governorate during two successive winter seasons (2016-2017, 2017-2018). The main objective of this study is detecting the effect of irrigation water quality and some practices of organic farming on wheat (Triticum aestivum L.) crop productivity , quality and soil fertility . The three experiments included the same treatments which were arranged in split-split plot design including three rates of spraying algae extract (zero, 0.50, 0.75 cm/l) , three doses of compost fertilizer( zero, 6, 8 ton/fed.) and two rates of bio fertilizer(zero, cerialine + phospharine + potassium dissolving bacteria). Wheat plants were sawn in the three sites. The first site was irrigated using potable water (Nile water) where the second site was irrigated with underground water, The third site was irrigated using the agricultural drainage water. At the same area wheat plants were cultivated on isolate experiment included the recommended NPK fertilizer to evaluate such treatments for the productivity of wheat crop from the pratical point of view. The most important results could be summarized in both seasons as follows: 1- In most cases, grain yield and yield components of wheat plants were responded significantly, where the highest value of such treatment resulted in the highest grain yield and best yield components. The result of this study improved that the trible treatment of 0.75 cm/l as algae extract spray , 8 ton/fed. of Compost fertilizer in the presence of bio fertilizer was superior comparing the other treatments. 2- The results obtained from applying the recommended NPK fertilizer were relatively near to those obtained from the trible treatment of 0.75 cm/l as algae extract spray ,6 or 8 ton/fed. of compost fertilizer in the presence of bio fertilizer. 3- Nutrient contents of N,P and K elements in grain and straw of wheat were increased in most cases according to high levels of such treatments comparing to the control ones. 4- The obtained results in two growing seasons were the best when wheat plants were irrigated by Nile water in comparison with the other two sources ( underground and agricultural drainage water) . 5- Some chemical properties of the alluvial soil under study including organic matter content, soil salinity and the degree of acidity (PH) were estimated towards the safe state compared to its values before conducting the three experiments through the two growing seasons