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Vol.6 , No. 5, Publication Date: Dec. 4, 2019, Page: 59-63
, single layer of polyethylene with green net 50% opening (S-PE+N) and double layers of polyethylene with 9cm air gap (D-PE). The experiments were conducted at the Demonstration Farm of the Faculty of Agriculture, University of Khartoum - Shambat, Sudan (32° 51’ E, 15° 65’ N and 380 m above mean sea level) during the two seasons (2018 and 2019) with the objective of improving the productivity of cucumber under greenhouses technology in Sudan dry land conditions. The parameters tested were irrigation efficiency (%), crop water requirements (mm/day), yield (kg/m<sup>2</sup>) and crop productivity (kg/m<sup>3</sup>). SAS Statistical Package was used to analyze the data. The results indicated that, crop water requirements, yield and crop productivity significantly difference in both seasons. Season 2019 gave the highest mean values of yield and crop productivity as compared to season 2018. Greenhouse technology covered by S-PE significantly (P ≤ 0.05) increased the yield (15.1 kg/m<sup>2</sup>) and crop productivity (25.3 kg/m<sup>3</sup>) comparing to S-PE+N which ranked the least (9.20 kg/m<sup>2</sup> and 20.8 kg/m<sup>3</sup>, respectively). The reductions in yield (23.4%) and crop productivity (19.1%) in season 2018 were due to the applied huge quantity of water more than crop required by drip irrigation system (irrigation efficiency 82%). It is concluded that, under the lower crop productivity of Sudan dry land conditions, greenhouse technology covered by S-PE with high efficiency of evaporative cooling system should be followed and adopted.&picture=http://www.aascit.org/aascit/decorators/img/journal/892.jpg)
| [1] | Amel Ahmed El Mamoun, Department of Agricultural Engineering, Faculty of Agriculture, University of Khartoum, Khartoum, Sudan. |
| [2] | Saher Gaafar Ahmed, Department of Agricultural Engineering, Faculty of Agriculture, University of Khartoum, Khartoum, Sudan. |
| [3] | Sirelkhatim Khalafalla Abbouda, Department of Agricultural Engineering, Faculty of Agriculture, University of Khartoum, Khartoum, Sudan. |
| [4] | Adam Bush Adam, Department of Agricultural Engineering, Faculty of Natural Resources and Environmental Studies, Alsalam University, Alfoula, Sudan. |
In the hot climate of Sudan, greenhouses technology is still a challenge to be monitored and adopted to avoid overheating air temperature inside the greenhouses. Three greenhouses were built and covered by different polyethylene covers namely; single layer of polyethylene (S-PE), single layer of polyethylene with green net 50% opening (S-PE+N) and double layers of polyethylene with 9cm air gap (D-PE). The experiments were conducted at the Demonstration Farm of the Faculty of Agriculture, University of Khartoum - Shambat, Sudan (32° 51’ E, 15° 65’ N and 380 m above mean sea level) during the two seasons (2018 and 2019) with the objective of improving the productivity of cucumber under greenhouses technology in Sudan dry land conditions. The parameters tested were irrigation efficiency (%), crop water requirements (mm/day), yield (kg/m2) and crop productivity (kg/m3). SAS Statistical Package was used to analyze the data. The results indicated that, crop water requirements, yield and crop productivity significantly difference in both seasons. Season 2019 gave the highest mean values of yield and crop productivity as compared to season 2018. Greenhouse technology covered by S-PE significantly (P ≤ 0.05) increased the yield (15.1 kg/m2) and crop productivity (25.3 kg/m3) comparing to S-PE+N which ranked the least (9.20 kg/m2 and 20.8 kg/m3, respectively). The reductions in yield (23.4%) and crop productivity (19.1%) in season 2018 were due to the applied huge quantity of water more than crop required by drip irrigation system (irrigation efficiency 82%). It is concluded that, under the lower crop productivity of Sudan dry land conditions, greenhouse technology covered by S-PE with high efficiency of evaporative cooling system should be followed and adopted.
Keywords
Greenhouses Technology, Crop Productivity, Cucumber
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