By: Kandil AA, Shareif AE
- Department of Agronomy, Mansoura University, Egypt
Field experiment was conducted during 2013/2014 and 2015 seasons was
aimed to evaluate productivity of Rhodes and Blue panic grasses as well
as Alfalfa under sprinkler irrigation with foliar application of
potassium nitrate that enable plants to cope with water stress. Each two
forage grasses beside alfalfa were conducted in separate experiments.
Irrigation every 10 days surpassed in total chlorophyll, leaf area,
plant height, number of stems/m2, forage green yield/fed and forage dry
matter yield/fed than those irrigated every 20 days. Highest percentages
of water use efficiency, crude fiber and nitrogen free extract as well
as yield/fed of crude protein, crude fiber, ether extract, ash and
nitrogen free extract were produced from irrigation every 7 days.
However, highest percentages of crude protein, ether extract and ash
were produced from irrigation every 14 days. Forage species
significantly differed on total chlorophyll, leaf area/plant, plant
height, average of number of stem/cm2, forage green yield/fed and forage
dry matter yield/fed. A significant effect due to forage species on
percentages of water use efficiency, crude protein and fiber, extracting
ether, ash and nitrogen free extract and nitrogen free extract as well
as crude fiber, extracting ether, ash and nitrogen free extract
yield/fed.
Sown Rhodes grass produced maximum forage green and forage
dry matter yield/fed and its quality compared with other studied forage
crops. Foliar spraying of potassium nitrate at 15 ppm significantly
increased total chlorophyll, leaf area, plant height, number of
stems/m2, forage green and forage dry matter yield/fed. The results
showed that highest percentages of water use efficiency, crude protein,
crude fiber and ether extract, and nitrogen free extract and nitrogen
free extract as well as crude fiber, extracting ether, ash and nitrogen
free extract yield/fed. It could be stated that irrigation every 10 days
and sown Rhodes grass and foliar spraying of potassium nitrate at 15
ppm maximized forage green and forage dry matter yield/fed. Get the full articles: Productivity of some forage grasses under foliar sprinkler irrigation and foliar application of potassium nitrate under salinity stress
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