Δύο διαφυλλικοί ψεκασμοί με Multi-K Mg οδήγησαν σε σημαντική αύξηση σε αρκετές παραμέτρους απόδοσης και σε αντοχή καλλιέργειας σε ασθένειες
Πίνακας
|
Crop/cultivar |
Sugar Beet/ Belotserkovskiy-45 (standard cv. in Ukraine) |
|---|---|
| Country / location | Ukraine / Belaya Tserkov, near Kiev |
| Objectives | Increase yield |
| Haifa product tested | Multi-KMg |
| Application method | Foliar nutrition |
| Tested treatment | 2 x foliar sprays, each @ 18 kg/ha, combined with 1kg/ha of a micro-nutrient compound (Microsol-B). 1st spray- just before spaces between rows were covered by the foliage, 2nd spray – 3-4 weeks before harvest. |
| Control treatment results | Total root yield: 28.5 MT/ha Sugar content: 18.3% Sugar yield: 5.22 MT/ha Yield of plant tops: 13.4 MT/ha Bacterial infection rates (%): Cercospora: 91.7; Phoma: 2.5; Erysiphe: 75.8; Ramularia: 65.0; Bacterial blotch: 21.7 Viral (mosaic) infection rate 0.8%. Grower’s revenue from root yield: 50.5 US$/MT |
| Best treatment results | Total root yield: 33.6 MT/ha Sugar content:18.6% Sugar yield: 6.25 MT/ha Yield of plant tops: 16.7 MT/ha Bacterial infection rates (%): Cercospora: 82.0; Phoma: 1.7; Erysiphe: 63.3; Ramularia: 43.3; Bacterial blotch: 11.7 Viral (mosaic) infection rate 0.1%. Grower’s revenue from root yield: 50.5 US$/MT |
| Characteristics of best treatment | Net benefit of best treatment Increase in total root yield: 5.1 MT/ha (17.9% over control) Increase in sugar content: 0.3% (1.6% over control) Increase in sugar yield: 1.03 MT/ha (19.7% over control) Increase in yield of plant tops: 3.3 MT/ha (24.6% ---“--- ) Cost of treatment (application + material) 70.2 US$/ha |
| Net benefit of best treatment | 257.55 |
| Benefit/Cost ratio | 3.67 |
| Conclusions | Significant increase in several yield parameters, and in crop resistance to diseases. Similar experiments should be performed in a variety of conditions in Ukrine. An important experimental control of spraying Microsol-B without the Multi-KMg is missing. Also, the extra benefit stemming from the enhanced top yield was not taken into consideration. |
| Reference | Dr. A. Zarishnyak & Mr. N.V. Roik– Ukrainian Academy of Agricultural Sciences, Institute of Sugarbeet |
