Effect of some soil amendments on nutrients uptake and productivity of cowpea/maize intercropping system under water stress in sandy soil | ||||
| Egyptian Journal of Agronomy | ||||
| Volume 47, Issue 1, March 2025, Page 95-106 PDF (892.33 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/agro.2024.330983.1544 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ahmed, M. mohamed Abd-Allah1; Rehab H. Hegab  2; Amira Attia Elmehy3
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| 1crop intensification research , field crops research institute, Agriculture research center | ||||
| 2soil fertility and plant nutrition, desert research center | ||||
| 3Crop Intensification Research Department, Field Crops Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| Abstract | ||||
| A field experiment was conducted at the Ismailia Agricultural Research Station (ARC) in Egypt. To study the effect of three irrigation frequencies [2, 3 and 4 days], four soil application treatments [SN1 (100% NPK+ hydrogel), SN2 (75% NPK+ hyd.), SN3 (50% NPK+ hyd.), and SN4 (100% NPK without hydrogel as control)] on yields, nutrients content and uptake, land equivalent ratio (LER) and economic return of maize and cowpea. Maize components and maximum grain production as well as content and uptake of NPK were obtained with irrigation events once every 2 days (IF1) plus SN1, followed by irrigation once every 3 days (IF2) plus SN1. Also, the two most frequent irrigation frequencies (IF1 and IF2) plus SN2 improved the number of branches each plant and the yield of fresh fodder, with maximum values obtained by IF2. The NPK content, and NPK-uptake exhibited a similar forage yield trend. In contrast, the lowest values of all studied traits of both crops were obtained by less irrigation frequency (IF3) plus untreated soil with hydrogel (SN4). The highest LER (1.51) obtained by IF1x SN1 treatment, which at par with treatment IF2 x SN1 (1.50). Whereas highest values of net return was obtained with IF2 x SN1 compared to the other treatments. Thus, we can implement the irrigation maize/cowpea intercropping system once every 3 days with SN1(100% NPK +hydrogel) to reduce water frequency from 2 to 3 days and obtain higher productivity, nutrient content, LER, and maximum net income from intercropping maize and cowpea. | ||||
| Keywords | ||||
| irrigation frequencies; hydrogel; NPK content; NPK uptake; economic return | ||||
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