181 result(s) for APPLICATION RATES

Abstract: A communication presented at the 20th annual NATO congress, San JosÄ, Costa Rica, November 1988. Cadusafos (Rugby 10 G) was tested on cv. 'Maricongo` plantain in the southern humid mountainous zone (Corozal clay). Dosages of 3 and 6 g of active ingredient (a.i.) of cadusafos were compared with 3 g a.i. of aldicarb and non-treated control plants. In...see more

Abstract: A communication presented at the 20th annual NATO congress, San JosÄ, Costa Rica, November 1988. Comparison of the effects of terbuphos 10G, 3 g and 4 g of active ingredient (a.i.) per plant twice and three times a year, and aldicarb and phenamiphos, 3 g a.i. three times a year on the control of Radopholus similis and yields in the Limon region (...see more

Abstract: 'Hom Thong` cultivar shoot tips were divided and cultured in vitro and 500 plantlets obtained were radiated at 0, 1, 2, 3 and 4 krads. The last two dosages were too high and resulted in necrosis and death of the plantlets. The survivors were cultured and subjected to inoculation tests with Sigatoka conidia. Although most of the plantlets were as ...see more

Abstract: Trials were carried out at Corozal Station (Puerto Rico) on a selected 'Maricongo' plantain. A first experiment in 1982 compared the effectiveness of Nemacur 15G, Furadan 10G, Dyfonate 10G and Temik 10G at different doses. Different methods of application of two chemicals at the same time were compared in a second trial : Mocap EC and Furadan 10G, ...see more

Abstract: Note. Comparison of numerous nutrition treatments applied to Robusta banana plants. Application of NPK 3 to 5 months after planting (110:35:330) led to a distinctly shorter cycle (389 days); all the other treatments gave 410 to 445-day cycles. Foliar sprays of urea at 1%, 2% and 3% were started after 4 months and applied every two weeks. Applicatio...see more

Abstract: Note. Treatments comprise soil application and foliar sprayings of increasing amounts of potassium compared to a control without potassium. The results of leaf analyses at different stages of development of the banana plants did not reveal any great differences between treatments but verified the variations previously reported by other authors, e.g...see more

Abstract: Available potassium in some soils at Reconcavo (Bahia) is low at 20 to 65 ppm. This K deficit is probably the main cause of the low productivity of crops in the region. A trial was carried out with K doses applied in chloride form: 0 (control), 200, 400, 600, 800, 1200, 1440 and 1600 kg/ha/year. In addition, comparison with a plot mulched with bana...see more

Abstract: Comparison of aldicarb at 2 g a.i. per plant and phenamiphos at 3 g a.i. per plant. Application every 4 months from December 1984 to April 1987 (8 applications). 1 ha was treated with each product. A total of 114 bunch harvests gave 4096 bunches with an average weight of 44.61 kg for aldicarb and 3708 bunches with an average weight of 40.77 kg for ...see more

Abstract: Trials were set up by INIAP to define the number of applications required to keep Radopholus similis populations low and banana yields high. Aldicarb 10G at 1.5 g and 3.0 g a.i. per plant every 6 and 12 months, ethoprophos, phenamiphos and carbofuran 10G at 3.0 g per plant and in a semi-circle around the successor sucker every 4, 6 and 12 months ...see more

Abstract: Short note summarizing work and advice on irrigating banana plantations: drip irrigation in heavy soil using good quality water and in moderate hot season (less than 30¡C), microjet irrigation in lighter soils with water containing cations and in the hot season (over 30¡C). Winter requirements are about 40% less than in summer. It is considered tha...see more

Abstract: Spanish translation under the auspices of the Centro Internacional de Investigaciones para el Desarrollo (CIID) of a series of articles published by the journal FRUITS from 1983 to 1986.

Abstract: After a bibliographical reminder of the very varied results of studies of nitrogen uptake by bananas, the author describes results of experiments at Burgershall and on the south coast of Natal. They confirm previous findings: no more than 70 g of N per mat per year should be provided; this corresponds approximately to the amount of nitrogen exporte...see more

Abstract: Urea and potassium chloride were applied weekly in trickle irrigation water from 3 months after planting. Comparison of 0, 4, 8 and 12 kg/ha of N plus 24 kg/ha of K2O on the one hand and 0, 8, 16, 24 and 32 kg/ha of K2O plus 8 kg/ha of N on the other. The economic optimum was found to be 8 kg/ha of N and 24 kg/ha of K2O/ha. This gave 137 t/ha of sa...see more

Abstract: N, P, K, Ca, Mg and S were analysed in 13 leaf samples in relation with the application to the soil of 0 to 1,400 kg/ha/year of K2O. Heavy precipitations and high temperatures increased the leaf concentrations of K, Mg, P and S and reduced those of N and Ca. The potassium in the soil acted on K, Ca and Mg contents in the leaves; their best levels w...see more

Abstract: The following annual amounts were tested: 0, 200, 400, 600, 800, 1,000, 1,200 and 1,400 kg/ha, with application of 500 kg of N in all cases. The optimum was between 600 and 800 kg of K2O; this gave the best vegetative growth and fruiting. Maximum financial profit was obtained with application of 660 kg of K2O; this gave 2,808 boxes of 19.32 kg of f...see more

Abstract: A study on 'Dwarf Cavendish' at Ranchi Station, Horticultural Experimental Centre, in a tropical climate on red sandy/silty soil, pH 6.1. The cool climate from November to February lengthens the cycle: 431 to 448 days from planting to harvest. Basic dressing consisting of manure, cake and natural phosphate was placed at planting. Comparison of 9 co...see more

Abstract: The first trials on 'Macho 3/4' plantain (Musa paradisiaca) at Alquizar, in La Habana province consisted of 7 treatments including a control containing no active ingredient. Primicid 50% EC was used at a dose of 1.5 cm3 per plant with 4 replications and 6 different volumes of spraying liquid: 0.12 l/plant (1), 0.50 l/plant (2), 1.00 l/plant (3), ...see more

Abstract: Reminder of knowledge of cucumber mosaic virus on banana. The disease appears to be spreading in Central America. Main weed hosts of the virus. Transmission vectors. Stress on description of symptoms at secondary, protruding leaf veins. Cases of swelling of secondary leaf veins. Flecking on internal sheaths. Damage is reduced by eradication by inje...see more