EFFECT OF ADDING SOME CONDITIONERS and IRRIGATION LEVELS IN WATER USE EFFICIENCY AND PRODUCTION OF MAYZE CROP

Abstract

Field Experiment was carried out during the autumn season of 2018 to determine the effect of some soil enhancers on the productivity and growth of maize-fajir-1 in western Iraq (Anbar-Khaldiya) and the study of some indicators of soil enhancers. The experiment included five coefficients to add enhancers: without addition of material A0, as well as coefficients containing different concentrations of polymer (0.2%P1, 0.4%P2) and (2%O1,24%O2) of ceratophyllum powder, respectively, and three levels (Eta I1, 125% of Eta I2, 150% of Eta I3) during one of the main plant growth stages, The distribution of the split plot disign RCPD and three replicates were statistically analyzed and the averages were compared at a lower test Significant difference (LSD) at 5% using the Genistate . Positive results were obtained under the effect of the addition of conditioners mixed with the soil with the highest yield of 8.44-ton h-1and 8.39-ton h-1 for treatment of polymer P2 and P1, respectively, compared with the treatment of comparison A0 where It reached 8.09 tons h-1. The efficiency values of field and crop water increased by increasing the percentage of enhancers, with the highest value for field water use efficiency of 1.44 Kg.m-3 for P1 compared to the minimum efficiency of 1.33 Kg.m-3for O1, while the highest value for crop water use was 1.31 Kg m-3 for P2 compared with the lowest efficiency of O1 treatment at 1.29 Kg m-3. The plant height and dry weight values increased with the increase of the improvement rate. The highest value of plant height was 201.6 cm for the P2 treatment and 8.98 ton h-1 as dry weight for the same treatment compared to the lowest height of 181.7 cm for the treatment O1. The dry weight for the same treatment was 8.73 ton h-1, while the highest value of irrigation treatments was 192 cm for treatment I1. The dry weight of the same treatment was 8.87 ton h-1, compared to the lowest plant height for treatment I3 with 186 cm and the lowest dry weight for the same treatment was 8.7 ton h-1