บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Nitrogen nutrition and post-harvest susceptibility to Botrytis in table grapes.

Chambers, K. R.; Merwe, G. G. van der; Fourie, J. F.; Ferrandi, C.;

Rivista di Frutticoltura e di Ortofloricoltura Year: 1995 Vol: 57 Issue: 5 Pages: 47-50 Ref: 9 ref.

1995

บทคัดย่อ

Nitrogen nutrition and post-harvest susceptibility to Botrytis in table grapes.

 

The effect of 3 different levels of nitrogen fertilization (60, 120 and 180 kg/ha, each quantity applied 3 times) on the susceptibility of grapes (cv. Barlinka) to Botrytis cinerea was investigated in South Africa during 1988-90. The quantity of nitrogen used did not have a visible effect on the infection rates of B. cinerea in the vineyard, but after harvest there was a greater presence of the fungus in grapes from vines treated at 180 kg N/ha than in those from vines treated at 60 and 120 kg N/ha. High levels of nitrogen fertilization increased vegetative development, but did not improve the quality or yield of the product; grapes from vines treated with nitrogen at 120 and 180 kg/ha were of poor colour. Moreover, the cost of production was increased with high levels of nitrogen fertilization.