181 result(s) for APPLICATION RATES

Abstract: A study was performed at Assam Agricultural University, Jorhat, on 5 doses of potassium: 0 (1), 83 (2), 166 (3), 250 (4) and 330 (5) g per plant per cycle. The yield of the control (1) was low at 13.5 t/ha. It was 27.8 t/ha in treatment (2) and 30.0, 35.3 and 35.3 t/ha respectively in treatments (3), (4) and (5). There was less variation in plantin...see more

Abstract: Study of the influence of the fouling of the sprayer circuit by fungicides on the dose applied per hectare and the quality of coverage by SICA-ASSOBAG aircraft in Guadeloupe.

Abstract: Different types of cv. 'Nendran' plant material (suckers 1, 2 and 3 months old with 25, 50 and 75% pseudostem) were exposed to 1.0, 1.5, 2.0, 2.5 and 3.0 KR of 60Co gamma radiation at 0.228 MR per hour and planted immediately afterwards. Observations on day 90 and at harvesting: plant size (height, girth and the number of leaves) and cycle duration...see more

Abstract: Nitrogen was tested at doses of 0 g (control), 40 (N1), 80 (N2), 120 (N3), 160 (N4) and 200 g (N5) per plant, divided into 2 (S1) or 3 (S2) applications. P was applied uniformly at 17 g and K at 260 g. Leaf analysis performed in tissue from the centre of leaf III showed that the leaf nitrogen content increased with the dose of N applied: from 0.86 ...see more

Abstract: Experimental work was performed at the Department of Horticulture of Birsa Agricultural College in India in 1985-87 to study the effect on cultivation of 'Dwarf Cavendish' bananas of NPK fertilization in the form of ammonium sulphate, simple superphosphate and potassium chloride in comparison with a non-fertilized control (N0P0K0). Three different ...see more

Abstract: Bibliographical reminder of studies on banana fertilisation. The results of trials performed at three highland sites in the Caldas plantain zone on cv. Dominico Harton (Musa ABAB): study of the response of plantain to different amounts of N and K, of the effect of division of N and K and of different amounts of boron. The acid sandy soils at the ...see more

Abstract: A comparative table shows the characteristics of treatments before and after planting. The former were effective for a maximum of 72 days. Good pre-emergence results were obtained with oxyfluorfene 1.5 kg/ha alone or mixed with metolachlor ( 1 + 1.5 kg/ha). After the beginning of plant growth, the best maintenance treatments were ametryne + paraqua...see more

Abstract: Three fungicides used in different amounts were evaluated for effectiveness in the control of 4 common post-harvest diseases (crown rot, pedicel rot, anthracnose and blossom-end rot) in 'Naine' bananas. Before fungicide treatment, the fruits were treated with 500 ppm Ethrel ripener at pH 8. Prochloraz (1, 1.75 et 2.5 ml a.i../l) and Topsin-M (0.7, ...see more

Abstract: A study performed on the cv. 'Cavendish Gigante'. Three N doses (0, 150 and 600 g ammonium nitrate per plant) were applied in two parts at planting and after 120 days. Effect of application lasted 40 to 90 days depending on whether N was in ammonia or nitrate form. The respective effects on yields (24, 49 and 50 t/ha) are reflected in organic nitro...see more

Abstract: A trial was performed at Johrat in a plot at the Horticulture Department, Assam Agricultural University, to compare increasing potassium applications: 0, 86, 172, 258 and 344 g K per plant cycle applied in the third and fifth month after planting. The Leaf Area Index (LAI) was strongly increased by the K applications with difference being at a maxi...see more

Abstract: Various micro-elements at different doses were tested in the field on several cultivars: Jahaji, Barjahaji and Chenichampa. The treatments were as follows in grams per plant: 6 g boron, 9 g zinc, 6 g copper, 6 g manganese and 1 g molybdenum. The combinations were: B + Zn, B + Zn + Cu, B + Zn + Cu + Mn and B + Zn + Cu + Mn + Mo. There was one contro...see more

Abstract: Four treatments were compared: (1) a control receiving a normal application of NPK 3 and 5 months after planting (110:35:330 g NPK per plant per year); (2) half of dose (1) plus 2 foliage sprayings at 3 and 5 months; (3) half of dose (1) plus 4 foliage sprayings at 3, 5, 7 and 9 months; (4) half of dose (1) plus 5 foliage sprayings at 3, 5, 7, 9 an...see more

Abstract: A trial was carried out at Jorhat (Assam) on the cv. 'Jahaji' (AAA, 'Dwarf Cavendish') with six doses of nitrogen (0, 40, 80, 120, 160 and 200 g urea per plant) applied in two operations three and five months after planting or in three operations: three and five months after planting and at flowering. The objective was to examine the effect of nitr...see more

Abstract: Irradiating green bananas with 0.4 kGy or more caused tissue damage and disturbed normal ripening. Irradiation at 0.2 kGy (at 7.35 kGy per hour) delayed ripening by reducing sensitivity to endogenous ethylene without any toxic effects. Ripening with large amounts of exogenous ethylene was not modified by irradiation. The delay was 28 days at ambien...see more

Abstract: Bananas of maturity stages of 0.6, 0.7, 0.8 were treated at 20oC with ethylene concentrations ranging from 0 to 100 ppm, and the effect of these treatments on respiration rate and ethylene formation was determined. The effect of ethylene treatment on polyphenoloxidase (PPO) activity and changes in water-soluble tannin content as well as the stabili...see more

Abstract: Previous studies had shown the beneficial effects of magnesium application on the yield of bananas grown on ultisol in Puerto Rico. This moist mountain region soil has low P, K and Mg contents and toxic levels of Al and Mn. A trial performed from 1984 to 1987 at Corozal Station on Musa acuminata, AAA, cv Grand Nain consisted of a control (1) with...see more

Abstract: A communication presented at the 20th annual NATO congress, San JosÄ, Costa Rica, November 1988. Oxamyl liquid nematicide was studied by IRFA in Martinique from 1984 to 1987. It was applied 3 or 4 times a year in two 3.5 ml applications per plant. Oxamyl was compared with phenamiphos for nematicide effect and with chlordecone for action on the bana...see more