INTERACTION AMONG IRRIGATION INTERVALS AND N LEVELS IN CORN Zea mays L. NEW APPROACH FOR EVALUATING INTERACTION | ||
| Journal of Plant Production | ||
| Article 3, Volume 25, Issue 4, April 2000, Pages 1909-1922 PDF (717.3 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2000.258776 | ||
| Author | ||
| A. A. El-Ganayni, | ||
| Agron. Dept., Fac. of Agric., Cairo Univ., Giza, Egypt. | ||
| Abstract | ||
| Two field experiments were carried out in Belcas, Dakhalia governorate, Egypt, during 1998 and 1999 on corn S.C. 10, to study the effect of four irrigation intervals 7, 12, 17 and 22 days, and four N levels, viz 80, 90, 100, 110 kg/fed. And their interaction. A strip plot design with four replicates was used, where the whole and sub plots were devoted to the levels of irrigation and N, respectively. Results showed that, mostly positive effects were detected as intervals were shortened and N levels were increased. The highest yield was observedon combination gathered irrigation every 12 day with N110, which yielded 33.3 and 33.7 ard/fed. in 1998 and 1999, respectively. Equilibirity among combinations of the interaction was achieved. A scale was suggested for classifying studied traits according to their response percentage to the interaction. Such scale included five categories A,B,C,D and E. Days to 50% silking, 100-kernel weight, P% and K% in grains showed high response % category “A”, meanwhile, no. of rows/ear showed no response %, category “E”. Grain yield/fed. was arranged in “B” category, “medium response”. Water use efficiency seemed to be increased as irrigation interval was shortened. Water utilization efficiency was 1.09, 1.10, 0.93. 0.82 kg/m3 for intervals 7, 12, 17 and 22 days, respectively. | ||
| Keywords | ||
| Maize; Irrigation interval; N fertilization; Interaction; I x N | ||
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