GB1148986A - Improvements relating to the cultivation of plants - Google Patents

Improvements relating to the cultivation of plants

Info

Publication number
GB1148986A
GB1148986A GB43873/66A GB4387366A GB1148986A GB 1148986 A GB1148986 A GB 1148986A GB 43873/66 A GB43873/66 A GB 43873/66A GB 4387366 A GB4387366 A GB 4387366A GB 1148986 A GB1148986 A GB 1148986A
Authority
GB
United Kingdom
Prior art keywords
nitrate
conductivity
supplied
potassium
nutrient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB43873/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wallco AB
Original Assignee
Wallco AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH1272265A external-priority patent/CH443952A/en
Application filed by Wallco AB filed Critical Wallco AB
Publication of GB1148986A publication Critical patent/GB1148986A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility

Abstract

1,148,986. Hydroponics. WALLCO A.B. 30 Sept., 1966 [1 Oct., 1965], No. 43873/66. Addition to 1,138,318. Heading C1B. In a system of hydroponics with recycling of the aqueous nutrient, the pH and conductivity of the nutrient are continuously measured and variations from a pH of 3-8 and a conductivity of 20-2000Á ohm<SP>-1</SP>cm.<SP>-1</SP> cause addition of a corresponding replacement stream. Replacement streams may be supplied to a holding tank from three supply tanks, equal quantities being supplied from the first and third in response to change in pH and equal quantities being supplied from the second and third in response to change in conductivity. The first tank contains ammonia, potassium dihydrogen phosphate, and potassium sulphate; the second contains ammonium nitrate, potassium dihydrogen phosphate, and potassium sulphate; and the third contains potassium nitrate, ammonium nitrate, nitrid acid, magnesium nitrate, calcium nitrate, and compounds of trace elements. The trace elements are iron, manganese, zinc, boron, copper, and molybdenum. The water level in the holding tank is maintained by the addition of de-ionized water. The nutrient contains elements in the proportions specified in the parent Specification.
GB43873/66A 1965-10-01 1966-09-30 Improvements relating to the cultivation of plants Expired GB1148986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1272265A CH443952A (en) 1964-09-18 1965-10-01 Automatic bottle cap dispenser

Publications (1)

Publication Number Publication Date
GB1148986A true GB1148986A (en) 1969-04-16

Family

ID=4385763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43873/66A Expired GB1148986A (en) 1965-10-01 1966-09-30 Improvements relating to the cultivation of plants

Country Status (2)

Country Link
FR (1) FR1495734A (en)
GB (1) GB1148986A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392597A1 (en) * 1977-01-15 1978-12-29 Fisons Ltd CULTIVATION PROCESS IN A LIQUID NUTRITIONAL ENVIRONMENT
US4146383A (en) * 1975-12-08 1979-03-27 Hanway John J Combination of ground and foliar application of fertilizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146383A (en) * 1975-12-08 1979-03-27 Hanway John J Combination of ground and foliar application of fertilizer
FR2392597A1 (en) * 1977-01-15 1978-12-29 Fisons Ltd CULTIVATION PROCESS IN A LIQUID NUTRITIONAL ENVIRONMENT

Also Published As

Publication number Publication date
FR1495734A (en) 1967-09-22

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