Abstract: A method for controlling insects using nitrophenyl pyrones is described. The pyrones are preferably derived from Streptomyces sp. by a method involving growth and extraction of the pyrones. A novel pyrone, griseulin is also described.

Abstract: A method for controlling insects using nitrophenyl pyrones is described. The pyrones are preferably derived from Streptomyces sp. by a method involving growth and extraction of the pyrones. A novel pyrone, griseulin is also described.

Abstract: A method and compositions for stimulating the growth of vesicular-arbuscular mycorrhizal fungi alone or in the presence of a plant material using isoflavonoid compounds is described. The isoflavonoids are preferably of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, hydroxyl and alkoxy, particularly methoxy.

Abstract: A method and compositions for stimulating the growth of vesicular-arbuscular mycorrhizal fungi alone or in the presence of a plant material using isoflavonoid compounds is described. The isoflavonoids are preferably of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, hydroxyl and alkoxy, particularly methoxy.

Abstract: A new species of Micromonospora, in particular Micromonospora spartanea ATCC 53803, is described. The species produces antifungal compounds spartanamicins A and B. Methods for the production, isolation and characterization of the compounds are described. The compounds contain deoxy-L-fucose, as well as another hexose and an amino sugar.

Abstract: A new species of Micromonospora, in particular Micromonospora spartanea ATCC 53803, is described. The species produces antifungal compounds spartanamicins A and B. Methods for the production, isolation and characterization of the compounds are described. The compounds contain deoxy-L-fucose, as well as another hexose and an amino sugar.

Abstract: A method for stimulating plant growth using synthetically produced 9-beta-L(+) adenosine is described. The method uses the synthetically produced compound instead of a naturally occurring material which occurs in only minute amounts and is difficult to isolate.

Abstract: A method and compositions for stimulating the growth of vesicular-arbuscular mycorrhizal fungi alone or in the presence of a plant material using isoflavonoid compounds is described. The isoflavonoids are preferably of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of hydrogen, hydroxyl and alkoxy, particularly methoxy.

Abstract: A new species of Micromonospora, in particular Micromonospora spartanea ATCC 53803, is described. The species produces new antifungal compounds spartanamicins A and B. Methods for the production, isolation and characterization of the compounds are described. The new compounds contain spartanose, which is a new hexose sugar, as well as another hexose and an amino sugar.

Abstract: Substituted olefinic (allyl) benzene compounds which exhibit important antimicrobial (antibacterial and antifungal) activity, compositions and methods of delivery against pathovars and pathogens, and methods of synthesis from commonly available reactants. The antifungal composition active ingredient is one or more 4,5-substituted 2,3-alkylidenedioxy-1-olefinic benzenes of the formula: ##STR1## where R.sub.1 and R.sub.2 may be the same or different, and are selected from OH, and C.sub.1 -C.sub.5 alkoxy (--OR) or thioalkyl (--SR) groups. R.sub.3 and R.sub.4 are selected from H and C.sub.1 -C.sub.5 alkyl, alkenyl and alkynyl groups, and R.sub.5 is selected from C.sub.3 -C.sub.7 alkyl, alkenyl and alkynyl groups. The preferred compounds are 4,5-substituted-2,3-methylenedioxy-1-allyl benzenes. Where R.sub.1 =OCH.sub.3, R.sub.2 =OH, R.sub.3 and R.sub.4 =H and R.sub.5 =allyl (2',3' propenyl) the compound may be called nor methyl-pseudo-dillapiole. Where R.sub.1 =R.sub.2 =OCH.sub.3, R.sub.3 and R.sub.

Abstract: The present invention comprises a new class of 2,3,4-tri-O-acylhexoses and mixtures thereof. Members of the new class of compounds are comprised of a hexose sugar having fatty acids attached at the 2, 3 and 4 positions of the hexose moiety. The fatty acids can be saturated or unsaturated, and can have a relative molecular size of up to C.sub.30. When at least one of the acylating fatty acid groups on the hexose molecule contains more than 7 carbons, the resulting 2,3,4-tri-O-acylhexoses (or mixtures thereof) have a non-bitter taste. On the other hand, when none of the acylating fatty acids have more than 7 carbons, the resulting 2,3,4-tri-O-acylhexoses (and mixtures that contain them) are bitter when tasted.The new 2,3,4-tri-O-acylhexoses can be synthesized using known chemical methods. Alternatively, the new compounds, and especially mixtures thereof, are obtained as the result of selective extraction and purification of the epicuticular exudate from Lycopersicon pennellii plant parts.