Evaluation of different techniques to spray the compost tea for orcard trees / [electronic resource].

Includes references.

The conventional sprayers, such as the gun sprayers were appliedfor the
apple trees under Egyptian conditions. In organic apple production the
growers tends to apply the compost tea as provide fertili=er and
pesticides control. The objectives ofthis current research were to spray
the compost tea by using the gun sprayer, air assisted backpack sprayer
Stcuki (2.13 kW) and Tia=h. QiniJi Machinery Knapsack. Also,
investigated to use the yeast 'with the compost tea to improve and
increase nutrient availability. The different techniques sprayers an air
assisted backpack sprayer Su=uki (2.13 kW) and Tia=h. Qinili Machinery
Knapsack ,sprayer (0. 7 kW) achieving thorough coverage was compared
to a conventional hydraulic sprayer (gun sprayer) to apply the bio
fertilber compost tea. Two different composts tea, the aerated compost
tea (ACT1) and nun-aerated compost tea (.4CT2), were applied under
laboratory conditions. The 10 gm ofyeast!10 liter was added for both
compost teas (ACT) as the marker ofthe microorganism in the compost
tea. Microscope with digital camera and sofhvare Image J VI.52
program was used to cOllnt the yeasts cells before and after spray
treatment conditions. The conventional hydraulic sprayer (gun sprayer)
gave a good result to apply the compost tea with low values ofnumber of
microorganisms (yeast cells). The low values ofyeasts after treated main
that there are a highest damage or crushed of yeast cells and the
nutrition will be increasing. The viability numbers of yeast cells for
com'entional gun sprayer in ACTJ compost tea were 0.76 x 106 / ml and
0.52 x 1~ / ml at operating pressure 390 kPa and 480 kPa respectively.
As well as. the viability numbers of yeast cells for com'entional gun
sprayer in ACT2 compost tea were 0.84 x 1~ / ml and O. 76 x 106 / ml at
operating pressure 390 /cPa and 480 kPa respectively. he values ofnumber ofyeast cellsfor ACT1 were 0.52 x](1 Iml, 2.60x
106 I ml and 1.22 x 106 I ml for conventional sprayer, motorbed an air
assisted backpack sprayer SU=llki with 2.13 kW power and Tia=h Qinili
MachinelY Knapsack sprayer with 0.7 kW power respectively. The
viability numbers ofyeast cellsfor ACT2were 0.63 x 106
1ml, 1.06 x 1ifI
ml and 0.82 x 106 I mlfor conventional sprayer, motori=ed an air assisted
backpack Su=uki sprayer and Tia=h Qinili MachinelY Knapsack sprayer
respectively. The viability numbers of yeast cells for the air assisted
backpack SlI=uki ~prayer were 2.3 x 106 I ml and 4.6 x 106 I mlfor ACT!
and ACT2 compost tea at halfopen throttle air position respectively. The
conventional gun sprayer produced highly values ofdamage percentage
compared to the T. Qinili sprayer and Su=uki sprayer. The percentage of
damage yeasts cell in ACTl were 97.25% and 96.08 % at operating
pressure 480 /cPa and 390 kPa respectively

Summary in Arabic.