 | 446 páginas
Rubber from late coagulated with sulphuric acid . Jour . Rubber Res . Inst . Malaya 5 ( 3 ) : 294 , 1934 46 . 47 . PAN American Union . Washington , D . C . Rubber : 3 , 1944 PETCH , T . The diseases and pests of the rubber tree : . | |
 | Chelston W. D. Brathwaite - 1981 - 296 páginas
1978 PETCH , T. ( 1921 ) The South American leaf disease . In : The Diseases and Pests of the Rubber Tree . London : Macmillan . p . 78-81 . 1979 PETCH , T. ( 1928 ) Mycological notes - Fomes lignosus . Tropical Agriculture ( Trinidad ) ... | |
 | Alba Iris Calderón de Cerdas, Ana Maria Arias de Guerrero - 92 páginas
Includes control of snails , slugs and pests of rubber wood . Mycology / plant pathology : studies on abnormal leaf fall ( Phytophthora sp . ) , powdery mildew ( Oidium heveae ) , nursery leaf spot diseases ( Corynespora cassiicola ... | |
 | 92 páginas
Includes control of snails , slugs and pests of rubber wood . Mycology / plant pathology : studies on abnormal leaf fall ( Phytophthora sp . ) , powdery mildew ( Oidium heveae ) , nursery leaf spot diseases ( Corynespora cassiicola ... | |
 | 116 páginas
POTASH requirements of young rubber plants . Rubber Research Institute of ... STEINMANN , A. Diseases and pests of Hevea brasiliensis in the Netherlands Indies . ... TREE injection for the diagnosis of nutrient deficiencies . In Rubber ... | |
 | 38 páginas
PLANT DISEASES AND CROPPING SYSTEMS MAGISTER SCIENTIAE THESES Summaries and Conclusions NEWS IN BRIEF NEW. Diseases and pests affecting crops are important factors which regulate the availability of good quality food . | |
 | 588 páginas
ABSTRACTS OF PAPERS PRESENTED SYMPOSIUM ON THE CONTROL of diseASES AND INSECT PESTS OF CACAO BOTANY ALVIM , P. de T. ... R. G. Orellana , Plant Pathologist Inter - American Institute of Agricultural Sciences Turrialba , Costa Rica In ... | |
 | 66 páginas
Invasive diseases of crop plants are also reviewed , concentrating on tropical tree crops , in particular : cocoa , coffee and rubber . Three fungal pathogens , Moniliophthora roreri ( cocoa frosty pod ) , Crinipellis perniciosa ... | |
 | 192 páginas
He is one of a group of notable scientists who have conducted research on the control of the Sigatoga disease of bananas ... Hevea rubber tree , and is now assisting in the surveys and planning phases of the cacao farm mear Siquirres . | |
 | 400 páginas
... for each individual tree , of yield , incidence of diseases and pests and other characters that are being studied . ... One of the open ends of a tube is covered with a piece of cheese cloth held in position with a rubber band . | |
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