Η έναρξη εμφάνισης των λοβών ήταν το πλέον κατάλληλο στάδιο για την εφαρμογή του Multi-K
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Crop/cultivar |
Soybeans / A-4100 ; A-4501 ; Dorado 4.8. ; Dekalb 458 |
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|---|---|---|---|---|
| Country / location | North cent. Argentina / Junin ; Murphy ; Arequito ; Va. Dafonte | |||
| Objectives | Increase yields | |||
| Haifa product tested | Multi-K | |||
| Application method | Foliar nutition | |||
| Tested treatment | 1x 3% or 1x 6% or 3x 6% Multi-K at 200 lit./ha, combined with insecticides (against a caterpillar eating the stem base) at three different physiological stages: flower initiation, pod initiation & beginning of bean filling | |||
| Locations: Control treatment results Kg/ha |
Junin |
Murphy |
Arequito |
Va. Dafonte |
| Best treatment results Kg/ha |
2735 |
5030 |
5030 |
2579 |
| Characteristics of best treatment |
Best timing in all locations was spraying the Multi-K at pod initiation. In ¾ of the cases 6% produced best results. In one location 3% Multi-K was even better. The result obtained in Murphy is statistically very significant (P0.01), and the mean of all locations is significant (P0.05). Mean yield increase: 0.4 MT/ha Grower’s revenue from yield: 155.- US$/MT Cost of treatment (material only ): 6 $/Ha |
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| Net benefit of best treatment | 0.4 x 155 –6 = $ 56 | |||
| Benefit/Cost ratio | 62 / 6 = 10.3 | |||
| Conclusions |
This experiment is additional to several previous positive results showing considerable beneficial value for the soybean grower. Therefore, the results of this experiment can be implemented for all tractor- spraying at volumes of 100-200 L/ha. This experiment should be followed by an experiment with 20-40 L/ha (rates used in aerial sprays), and 9-12% Multi-K. |
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| Reference | G. Farbman and R. Melgar / Almidar & Haifa Chemicals Argentina, and National Institute for Agriculture | |||
Need more information about growing soybeans? You can always return to the soybean fertilizer & soybean crop guide table of contents
