The extent and severity of Zn and Cu deficiency and their mutual interaction in maize on soils of the Punjab. | [Pakistan Journal of Scientific and Industrial Research • 1979]

Author(s):

1. A. Rashid: Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan

2. Rahmatullah: Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan

3. F Hussain: Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan

4. A. Latif: Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan

5. M. Sharif: Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan

Abstract:

The effect of Zn and Cu fertilizers on yield and their uptake by maize was studied in a pot experiment on 23 calcareous soils collected from major maize growing tracts of the Punjab. Ten ppm Zn applications increased dry matter yields quite appreciably, . while 10 ppm Cu decreased it on most bf the soils. Zinc uptake by `plants rose on Zn treated soils. Its applications generally depressed Cu concentration in plants without exhibiting any adverse effect on plant growth. Copper application enhanced Cu uptake but aggravated Zn deficiency in plants resulting in marked reduction in dry matter yield on many soils. Zinc fertilization depressed P concentration in plants on most of the soils. The response of maize to Zn addition was found to have little relevance to P/Zn ratio of maize tissue.

Page(s): 57-63

DOI: DOI not available

Published: Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 22, Issue: 1--2, Year: 1979

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