تأثير أسلوب الري و نوعية المياه و إضافة الحمأة في بعض صفات حاصل الذرة الصفراء

الملخص EN

A field experiment was carried out in Al-Wihda Research Station included four irrigation treatments namely, irrigation with river water (treatment R1) in other treatments drainage water and river water used at a ratio of 1:1 which used for irrigation in different ways as a mixing (R2) alternating (R3) and dual irrigation (R4).

Application of sewage sludge and chemical fertilizers included the following treatments; chemical fertilizer treatment which added as recommended dose for maize (treatment F), fertilizer used in this treatment are include DAp, K2SO4 and urea (NH2)2CO added in amount as recommended for maize crop (Al-Sahuki, 2000).

Sewage sludge treatment (treatment S) added in a level of 50 tons per hectare and mixed treatment of both sludge + chemical fertilizer (treatment FS) .Different treatments cultivated by maize crop (Zea mays L) class (5018) and irrigated with river water (EC = 0.92 dS m-1) or both river and drainage (EC= 4.95 dS m-1) water.

The results showed a relative increase in plant height by 6.78 and 14.47% , at dry matter weight (g plant-1) by 9.58 and 20.34%, grains yield (g plant - 1)7.95 and 25.91%, weight of 1000-grain by 2.52 and 18.73%, and the weight of the grain (Mg ha-1) by 7.92 and 26.00%, at respectively, for S and FS treatments compared with F.

for the impact of water salinity and methods of irrigation on growth parameters differences were significant and generally enhanced in the following order: R1> R4> R3> R2, respectively for plants length; 214.4 , 205.1 , 192.3 and 184.6 cm.

dry matter (g plant -1); 182.67 , 168.00 , 158.33 and 146.00 and for grain weight (g plant -1); 152.9, 146.0,136.3 and 124.7 and for 1000-grain weight (g); 317.67, 304.92, 291.00 and 274.00 and the weight of grain (Mg ha -1); 8.13,7.77, 7.25and 6.63.