Abstract: An object of the present invention is to provide an agricultural/horticultural preparation having improved photostability, comprising MK 8383 substance. A composition according to the present invention comprises a compound of formula (I): wherein R1 represents hydrogen atom, or a lower alkyl or alkyl carbonyl group, and R2 represents hydroxyl group or a lower alkoxy group, or its salt, and cyclodextrins.

Abstract: A sulfonylsemicarbazide derivative of the general formula (I) is effective as a preservative agent for preserving the freshness of a flower, which can prolong the vase life of the flower petals of cut flowers where the flowers can be enjoyed. ##STR1## wherein R.sup.1 represents a (C.sub.3 -C.sub.4)-alkyl group, a substituted or unsubstituted phenyl group, a pyridyl group, a thio-phenyl group or others, R.sup.2 and R.sup.3 each independently represent a hydrogen atom, a lower alkyl group, an alkoxalyl group, an alkoxyalkyl group, a group of the formula --C(X)--X--R.sup.4 where X means an oxygen atom or a sulfur atom and R.sup.4 means an alkyl group, or other, or R.sup.2 and R.sup.3 may form a heterocyclic ring having 4 to 5 carbon atoms or a group of the formula --N.dbd.CR.sup.5 (R.sup.6), as taken with the --N atom to which R.sup.2 and R.sup.3 are attached.

Abstract: A known antibiotic, SF-1293 substance and salts thereof have now been found to exhibit high herbicidal effects against a wide variety of herbaceous and woody plants, but they are non-phytotoxic particularly to a useful woody plant, Chamaecyparis obtusa. The herbicidal effects of these SF-1293 substances can be synergistically enhanced by applying in combination with herbicides selected from Linuron, Monolinuron, Monuron and Diuron each known as herbicides of urea derivative class.

Abstract: 2-Amino-4-(hydroxy)(methyl)phosphinoylbutyric acid, which earlier nomenclature referred to as 2-amino-4-methylphosphinobutyric acid or its metal salts, or acid-addition salts thereof are used as perennial weeds and brush controlling agents. The L-isomer is twice effective than the racemic acid.

Abstract: A known antibiotic, SF-1293 substance and salts thereof have now been found to exhibit high herbicidal effects against a wide variety of herbaceous and woody plants, but they are non-phytotoxic particularly to a useful woody plant, Chamaecyparis obtusa. The herbicidal effects of these SF-1293 substances can be noticeably enhanced by applying in combination with certain known herbicides or compounds having biological activities.

Abstract: Disclosed is a novel process for optically active [(3-amino-3-carboxy)propyl-1]phosphinic acid derivatives, which comprises reacting a Shiff's base with a derivative of vinylphosphinate in the presence of a base, and subjecting the resulting compound to hydrolysis to form the optically active [(3-amino-3-carboxy)propyl-1]phosphinic acid derivatives as either [L-(3-amino-3-carboxy)propyl-1]phosphinic acid derivatives or [D-(3-amino-3-carboxy)propyl-1]phosphinic acid derivatives.

Abstract: A known antibiotic, SF-1293 substance and salts thereof have now been found to exhibit high herbicidal effects against a wide variety of herbaceous and woody plants, but they are non-phytotoxic particularly to a useful woody plant, Chamaecyparis obtusa. The herbicidal effects of these SF-1293 substances can be noticeably enhanced by applying in combination with certain known herbicides or compounds having biological activities.

Abstract: A known antibiotic, SF-1293 substance and salts thereof have now been found to exhibit high herbicidal effects against a wide variety of herbaceous and woody plants, but they are non-phytotoxic particularly to a useful woody plant, Chamaecyparis obtusa. The herbicidal effects of these SF-1293 substances can be noticeably enhanced by applying in combination with certain known herbicides or compounds having biological activities.

Abstract: 2-Amino-4-(hydroxy) (methyl)phosphinoylbutyric acid, which earlier nomenclature referred to as 2-amino-4-methylphosphinobutyric acid or its metal salts, or acid-addition salts thereof are used as perennial weeds and brush controlling agents. The L-isomer is twice effective than the racemic acid.

Abstract: A known antibiotic, SF-1293 substance and salts thereof have now been found to exhibit high herbicidal effects against a wide variety of herbaceous and woody plants, but they are non-phytotoxic particularly to a useful woody plant, Chamaecyparis obtusa. The herbicidal effects of these SF-1293 substances can be noticeably enhanced by applying in combination with certain known herbicides or compounds having biological activities.

Abstract: 2-Amino-4-methylphosphinobutyric acid or its metal salts, or acid-addition salts thereof are used as perennial weeds and brush controlling agents. The L-isomer is twice effective than the racemic acid. The perennial weeds and brush controlling effect may be obtained by foliar application over a prolonged period.

Abstract: PCT No. PCT/JP78/00058 Sec. 371 Date June 15, 1979 Sec. 102(e) Date June 15, 1979 PCT Field Dec. 18, 1978 PCT Pub. No. WO79/00405 PCT Pub. Date July 12, 1979This invention relates to a novel process for preparing D,L-2-amino-4-methylphosphinobutyric acid having herbicidal and antifungicidal activities which comprises subjecting acrolein to reaction with a dialkyl phosphonite to synthesize an acetal of an ester of 3-oxopropylmethylphosphinic acid; treating the thus obtained compound with an acid for deacetalization to obtain an ester of 3-oxopropylmethylphosphinic acid and then applying the Strecker's process used for amino synthesis to the thus obtained ester.

Abstract: Novel compounds represented by formula (I) or (II) are provided: ##STR1## They can control annual and perennial weeds, shrubs and aquatic plants more effectively than their mother compounds, or (2-amino-4-methylphosphinobutyryl)alanylalanine and 2-amino-4-methylphosphinobutanoic acid, respectively.