Foliar Nutrition:
an Extra Bonus for the Rice Grower
Yoav Ronen, Joshua Golovaty and Eran Barak, Haifa group
Foliar Nutrition- an extra Bonus for the rice grower
About 80 million ha of irrigated lowland rice is mainly cultivated as flooded fields.
The unique properties of flooded soils make rice nutrient management different from any other crop.
Foliar Nutrition- an extra Bonus for the rice grower
When the soil is flooded, major chemical changes occur.
These changes influence nutrients availability to plants.
- Chemical reduction of soil.
- Decrease in concentrations of water-soluble Zn and Cu.
How Foliar Nutrition can improve nutrient management in flooded soils?
Foliar feeding is an effective method for overcoming the flooded soil special condition:
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Nutrients are |
increases the rate of the |
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absorbed directly |
photosynthesis in the leaves |
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where they are needed |
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stimulate nutrient absorption by plant roots
Foliar nutrition applied at critical times correct deficiencies immediately and help maximizing yields and quality.
What Foliar Fertilizer is good for rice ?
Available in various N-P-K ratios.
Enriched with secondary (Mg) or micro (Zn) plant nutrients.
Has good physical properties, to improve adhesion of the fertilizer to the leaf surface and to release nutrients over a prolonged period of time.
Free of chloride.
Haifa’s offer: Haifa Bonus
Haifa Bonus trials
Haifa conducted Foliar Nutrition trials in various geographical sites, aiming:
To optimize rate and timing of Haifa Bonus application.
To evaluate the economical benefits of various foliar treatments.
Haifa Bonus trials: Vietnam trial 1
The Effect of Foliar Sprays with Haifa Bonus at 3% on yield and the economical return.
Spring crop
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kg/Ha |
Diff % |
US$/Ha |
Net income |
Diff from control |
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US$/Ha |
$/Ha |
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control |
5900 |
100% |
1639 |
1342 |
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Haifa Bonus x2 |
6270 |
106% |
1742 |
1422 |
79 |
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Haifa Bonus x3 |
6440 |
109% |
1789 |
1457 |
115 |
Summer crop
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kg/Ha |
Diff % |
US$/Ha |
Net income |
Diff from control |
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US$/Ha |
$/Ha |
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control |
4320 |
100% |
1200 |
903 |
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Haifa Bonus x2 |
5040 |
117% |
1400 |
1080 |
177 |
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Haifa Bonus x3 |
5030 |
116% |
1397 |
1066 |
162 |
Conclusion: 3 sprays with Haifa Bonus at 3% concentration, resulted in highest grain yields while 2 spray resulted with most profitable return.
Haifa Bonus trials: Vietnam trial 2
The Effect of Foliar Sprays with Haifa Bonus+Mg at 3% on yield and the economical return.
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Treatments |
Grain Yield Increase |
Haifa Bonus+Mg |
Labor |
Net |
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Cost |
Return |
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DAS * |
(T/ha) |
% |
(US$/ha) |
Cost (US$/ha) |
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US $/ha* |
US$/ha |
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Non sprayed |
4.56 |
-- |
-- |
-- |
-- |
-- |
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40 |
4.98 |
9.2 |
49.2 |
8.4 |
6.25 |
34.5 |
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60 |
5.17 |
13.3 |
71.4 |
8.4 |
6.25 |
56.7 |
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40 & 60 |
5.22 |
14.4 |
77.3 |
16.8 |
12.5 |
47.9 |
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40, 60 & 75 |
5.29 |
16.0 |
85.5 |
25.3 |
18.75 |
41.4 |
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* DAS = Days After Seeding
Conclusion: 3 sprays with Haifa Bonus+Mg at 3% concentration resulted in highest grain yields while 1 spray resulted was most profitable.
Haifa Bonus trials: Vietnam
Mekong Delta (Vietnam) –’On-farm’ demo plots
Average grain yield results obtained from 100 demo plots.
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No. of |
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Grain yield (T/Ha) |
Increase |
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Region |
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demo. Plots |
Haifa Bonus+Mg |
Control |
(T/Ha) |
(%) |
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AN GIANG |
30 |
Ave.: 6,57 |
Ave.: 5,99 |
0,58 |
9,68 |
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(5,06 – 8,02) |
(4,48 – 6,83) |
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KIEÂN GIANG |
20 |
Ave.: 6,70 |
Ave.:,21 |
0,49 |
7,89 |
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(6,13 – 7,20) |
(5,53 – 6,80) |
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CAÀN THÔ |
30 |
Ave.: 6,83 |
Ave.: 6,39 |
0,61 |
6,89 |
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(5,54 – 8,46) |
(4,90 – 8,00) |
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SOÙC TRAÊNG |
20 |
Ave.: 6,37 |
Ave.: 5,70 |
0,64 |
11,75 |
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(4,90 – 7,33) |
(4,20 – 6,36) |
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Haifa Bonus trials: Thailand
The effect of 3 foliar applications with Haifa Bonus in two cultivars, on yield and net profit .
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Haifa Bonus™ |
Yield |
Increase / ha |
Cost |
Extra net |
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US$/ha* |
Return |
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Treatments*** |
T/ha |
kg |
% |
(US$/ha) |
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* |
US$/ha |
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Cultivar: Photong (100 days) |
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Unsprayed |
6.63 |
-- |
-- |
-- |
-- |
-- |
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30, 60 & 75 DAS* |
8.35 |
1720 |
25.9 |
294 |
31.50 |
262.50 |
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Cultivar: Suphan 1 (120 days) |
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Unsprayed |
7.03 |
-- |
-- |
-- |
-- |
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30, 60 & 75 DAS* |
8.20 |
1170 |
16.6 |
200 |
31.50 |
168.50 |
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Conclusion: 3 sprays with Haifa Bonus resulted highest grain yields and increased the net income per area for both cultivars. Cultivar Photong had better response to the foliar application.
Haifa Bonus trials: China (AAS, Shanghai)
The effect of 2 Haifa Bonus foliar applications on rice at about 30 and 60 days after transplanting.
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Treatment |
Yield |
Yield increase / ha |
Haifa Bonus™ |
Net Return |
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kg/ha |
kg |
% |
US $* |
US$/ha* |
US$/ha* |
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Unsprayed |
12,930 |
-- |
-- |
-- |
-- |
-- |
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Haifa Bonus |
14,340 |
1410 |
11.46 |
215.64 |
21.1 |
194.4 |
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Conclusion: sprays with Haifa Bonus resulted highest grain yields and increased the net income per area .
Haifa Bonus trials: India
NARDI research station, Hyderabad
The Effect of Haifa Bonus on Rice.
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Treatment |
Grain Yield |
% Increase |
Additional Net |
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(t/ha) |
Over control |
Income (Rs./ha) |
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Unsprayed |
5.83 |
- |
- |
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Haifa Bonus1%, 3 sprays |
6.32 |
8.4 |
1305 |
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Conclusion: sprays with Haifa Bonus™, resulted higher grain yields and
increased the net income per area .
The advantages of Haifa Bonus
- Enable relatively high spray concentration without scorching of the foliage.
- Consists of pure, fully-soluble nutrients only.
- Free of harmful compounds such as chloride, sodium, excessive sulfate, etc.
- Compatible for tank mixing with a large variety of insecticide and fungicides.
- Contains a special adjuvant for improved adhesion of the fertilizer to the leaf surface and prolonged action.
