d width="43" valign="top">N1 N2 N3 N1 N2 N3 0.0 5.7 6.1 6.8 26.7 26.9 27.9 0.5 6.0 6.5 6.9 40.4 43.9 44.8 1.0 6.2 6.8 7.1 45.3 49.4 50.9 2.0 6.9 7.2 7.4 50.6 54.1 56.2

	Analysis Certificate of Agrite Sulphur
	Analysis Certificate of Giza CaB
	Certificate of Analysis Giza NPK
	Certificate of Analysis Vigro Iron
	Certificate of Analysis Vigro Manganese
	Certificate of Analysis Giza Fertile
	Certificate of Analysis Giza PK
	Certificate of Analysis-Vigro Nitrogen
	Certificate of Analysis Vigro Zinc
	GizaFertile-info
	Vigro Calcium info
	Vigro Iron info
	Vigro Manganese-info
	Vigro Potasium info
	Vigro Zinc-info

WINE

WATER SOLUBLE FERTILIZERS(WSF)

GIZA ORGANIC
FERTILIZERS

TELIANI
VALLEY
WINERY

ROCK PHOSPHATE
FROM FGYPT

GRANUPHOS (Direct
application rock phosphate)

Design by WebZone

/acre) and combined S & P were applied at random to certain plots. Effects of treatments on nutrient movement to root zone and on root depth were evaluated.


Effect of CaCO3/clay ratio on the yield response of barley to S application	Effect of S application on Barley yield in different soils.

Even though sulfur was mixed with the topsoil, considerable effect on the pH and phosphate content of subsurface soil was obtained. Only 4 weeks after sulfur application, pH of the root zone dropped from 8.0 in control plots to 7.7 in S treated plots. Phosphate availability in the same zone increased from few ppm in control plots to 35 ppm in phosphate treated plots to more than 85 ppm in sulfur treated plots, fig3. Movement of sulfate from topsoil was also increased several folds.
Movement of nutrients to subsurface and drop of pH seemed to maintain better growth conditions for root growth, it was shown that active root zone did not exceed 6 cm depth in S non treated plots compared to a zone of. 25 to 35 cm in sulfur treated plots. Maximum root penetration depth increased from 25 cm to 65 cm due to application of 200 kg S/acre. It can be observed from fig4 that both of strong and week plants in control plots are shallow rooted while strong and week plants in sulfur treated plots are deep rooted.
The depth of root zone is of special significance under limited water supply. Shallow rooted plants face complete damage due to temperature, drought and/or due to root infection.

Interaction effects of S, P and N:

Due to discrepancies in results concerned with the effect of S application on plant growth, in contrary to its emphasized effect on soil properties, it was thought important to investigate further the enhancing and retarding effects of different sulfur applications on plant production under different soil types. Therefore, field trials were conducted in sandy, calcareous and clay loam soils. The impact of different rates of S, P and N applications on some crops were evaluated

Effect of phosphorus and sulfur applications on certain properties on root zone

Effect of sulfur application on depth and distribution of lupine roots

Results indicated a positive combined effect of sulfur and nitrogen on the yield of garlic and squash in a loamy soil and with a lesser degree on the yield of fodder beet and wheat in sandy calcareous soils. A retarding effect of excessive sulfur application was recorded under all levels of added phosphorus on the yield of clover in the sandy soil. A sharp decline in clover yield was obtained in the treatment S P (one ton of sulfur + 300 kg super-phosphate).

Combined application of S and P was shown to increase the yield of garlic by 21%. The positive effect of S on bulb weight exceeded its effect on total garlic yield table4. This indicates that S contributes mostly to the eatable part while P and N contributes to total yield (straw included).

Sulfur Urea Mixtures

The response of peas to different sulfur-urea mixtures and to other fertilizer combinations was evaluated in a sandy soil.

Table5 shows that adding 50 kg sulfur resulted in significant increase in the yield of pods, ranging between 50% in the first picking and 15% in the third one. Increasing the rate of sulfur addition to 100 kg/acre gave twice as much yield of pods in the first picking. Further increase in sulfur addition to 200 kg/acre gave three times as much pods as compared to zero addition. Interesting to note that such recorded increases are true only in the first picking which is the most important from the economical point of view.

Effect of different S, P and N applications on the yield of garlic in a clay loamy soil

S (ton/fed.)	Yield ton/fed.			Average weight of bulb g.
	P-levels
	P1	P2	P3	P1	P2	P3
0.0	4.10	4.90	5.20	26.5	27.8	28.3
0.5	5.10	5.90	6.30	38.5	43.7	44.5
1.0	5.80	6.20	6.60	43.0	48.2	50.7
2.0	6.00	6.90	7.10	49.4	53.9	55.2
	N-levels