System fertilizers for growing seeds CUCUMBER

The development of fertilizer should consider the following features of seed plants and crops .

The harmful effects of elevated concentrations of fertilizer manifested in the weakeninggrowth, branching plants and fruit (reduces the number of testes), wilting plants during the day, reducing seed production, enhancing lesions basal rot and withering away .

5 . From seed, you should carefully check the agrochemical andphysical indicators of soil . For seed preferred greenhouses with fresh and unoccupied ground .

7 . In the period of intensive growth of plants in the soil with nitrogen maintain the level of security adopted for the culture for food purposes . At the time of formation of the testes and bookmarks on a plant it is somewhat reduced (15 - 25 ° / o) and carried out in the last period feeding part of the liquid nitrogen, phosphorus and potassium inlow concentration in the irrigation water.

10 . In the greenhouse seed can not be used chlorine fertilizer and fertilizer with a high content of dietary fiber (potassium chloride, 30 - 40% -s potassium salt, simple superphosphate and ammonium sulfate) .

where K - dose CaC03 + MgC03, t / ha; and - the mass of the layer of greenhouse soil, t / ha; I - hydrolytic acidity meq per 100 g soil; 0.0005 - a constant factor .

Table 7 . Mass ground 1 ha with different volumetric weight of it, that is

				Volumetric mass			G / cm³
Power of the arable layer, cm	0 . 2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0	1,1
5	100	150	200	250	300	350	400	450	500	550
10	200	300	400	500	600	700	800	900	1000	1100
15	300	450	600	750	900	1050	1200	1350	1500	1650
20	400	600	800	1000	1250	1400	1600	1800	2000	2200
25	500	750	1000	1250	1500	1750	2000	2250	2500	2750
30	600	900	1200	1500	1800	2100	2400	2700	3000	3300

After the application of organic fertilizers and liming materials soil plow or dig, and after application of mineral fertilizers is carried out milling, provides a very good distribution and mixing fertilizer with the soil .

Table 8 . Provision of greenhouse soil nutrients for growing seed heterosis hybrids cucumber breeding TSHA (by volume aqueous extract of the soil at a ratio of soil: water = 1: 2)If you use sawdust and straw to reduce the influence of nitrogen deficiency associated with biological fixationmineral nitrogen cellulolytic bacteria must be in addition to the normal standards make for a season 0.7 - 1.0 kg of pure nitrogen per 100 kg air-dry straw and about 1 kg of nitrogen per 1 m3 of wood chips .

	Element content, mg / l with the natural soil moisture				Total salt content
Level Security	N	P	K	Mg	G / l of soil	Specific electrical conductivity of a slurry, mS / cm
	For grades Natsu Fusinari
Low	30	5	30	10	0.5	0.3
Moderate	31 - 60	5.1 - 10.0	31 - 70	11 - 35	0.5 - 1.0	0.3 - 0.5
Normal	61 - 90	10.1 - 15.0	71 - 110	36 - 60	1.0 - 1.5	0.5 - 1.0
Increase	91 - 120	15.1 - 20.0	111 - 150	61 - 85	1.5 - 2.0	1.0 - 1.3
High	120	20	150	85	2.0	1.3
	For grades prolific 147B and other varieties and hybrids
Low	40	5	50	20	0.8	0.5
Moderate	41 - 80	5.1 - 10.0	51 - 110	21 - 50	0.8 - 1.5	0.5-1.0
Normal	81 - 130	10.1 - 15.0	111 - 170	51 - 70	1.5 - 3.0	1,0-2.0
Increase	131 - 170	15.1 - 20.0	171 - 220	71 - 100	3.0 - 4.0	2.0 - 3.0
High	170	20	220	100	4.0 - 5.0	3.0 - 4.0

Sort prolific 147B has a reduced salt tolerance compared with varieties Marfinskiy, Nerosimy 40 and hybrids . So when growing seeds Fi May unacceptable excess doses of fertilizers andtheir concentration in excess of dressing is usually recommended for the culture of cucumber for food purposes .

To convert the elements into oxides and vice versa, you can use the following data:

When filling the main listed in Table 9 doses of fertilizers should be made directly under the cutter . In the next 4 - 6 weeks of feeding is not carried out .

Plants quite micronutrients provided for the entire growing season due to their inclusion in the nutrient cubes, which are grown seedlings . Therefore, an additional application to the soil micronutrients in seed crops are usually not required .

Element X Factor = Oxide	Oxide HKoeffitsient = element
RH2,291 = P₂₅	P₂H0,436 = P₆
Kxl, 204 = K₂	C₂
SaH2,497 = SaS0₃	SaS0₃
CaX 1,400 = CaO	CaOx, 715 = Ca
MgX 1> 658 = MgO	MgOxO, 603 = Mg

Table 9 . Approximately dose of fertilizer in the seed crops heterotic hybrids cucumber breeding TSHA depending on the availability of soil nutrients (kg / 100 m2 d . C . )

Level of	Grade cucumber
Level of	Natsu Fusinari	147B prolific and everyone else
Nitrogen (N)
Low	202 - 135	252 - 169
Moderate	134 - 68	168 - 85
Normal	67 - 0	84-0
Increase	0	0
High	0	0
Phosphate(R₂)₅
Low	600 - 451	600 - 451
Moderate	450 - 231	450 - 231
Normal	230 - 0	230 - 0
Increase	0	0
High	0	0
Potash(K2O)
Low	312 - 209	390 - 261
Moderate	208 - 105	260 - 131
Normal	104-0	130 - 0
Increase	0	0
High	0	0
Magnesium(Mg)
Low	56 - 41	70 - 51
Moderate	40 - 25	50 - 31
Normal	24 - 0	30 - 0
Increase	0	3
High	0	C

Table 10 . Characteristics of the main mineral fertilizers to a protected ground

Fertilizers	Table Of Contents,%				Number of fertilizers (g) required to100L osmotic pressure of the solution at 1 atm
Fertilizers	N	B₂₈	K₂	MgO
Simple fertilizers
Ammonium nitrate	34	-	_	-	179
Urea	46	-	-	-	260
Calcium nitrate	14	-	-	-	271
Triple superphosphate	-	47	-	-	-
Potassium sulphate	-	-	45	-	259
Magnesium sulfate	-	-	-	16	549
Epsom (natural sulfate	-	-	-	11	-
Magnesium) Dolomite powder	-	-	-	16	-
Complex (complex) fertilizer
Ammonium phosphate	12	48	-	-	-
Diammonium phosphate	20	50	-	-	-
Potassium nitrate	13	-	46	-	225
Magnesium ammonium phosphate	8	46	-	15	-
Rastvorin	20	16	10	-	207
	18 *	6	18	-	213
	13 *	40	13	-	246
	10 *	5	20	6	332
Sulphate of potassium-magnesium **	-	-	30	10	-