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EFFECT OF LEVELS AND FREQUENCY OF ZINC SULPHATE APPLICATION ON ITS CONTENT AND UPTAKE BY MAIZE AND SUNFLOWER IN THEIR SEQUENTIAL CROPPING SYSTEM

R. Shanmugasundaram, P. Savithri

Affiliations

¹Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore - 641 003, India

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Cite article:- Shanmugasundaram R., Savithri P. (2025). EFFECT OF LEVELS AND FREQUENCY OF ZINC SULPHATE APPLICATION ON ITS CONTENT AND UPTAKE BY MAIZE AND SUNFLOWER IN THEIR SEQUENTIAL CROPPING SYSTEM. Agricultural Science Digest. 26(1): 31 - 34. doi: .

ABSTRACT

Field experiments involving maize var. CO. 1 in rabi season followed by sunflower var. CO. 2 in kharif season in a sequence were carried out to study the influence of levels and frequency of zinc sulphate application on zinc removal pattern during the year 1999–2000 and 2001-2002. The pooled analysis of experiment results revealed a distinct trend of zinc concentration and total uptake by maize and sunflower crops. As regards maize, application of zinc sulphate @ 37.5 kg ha−1 to first crop followed by 12.5 kg ha−1 to all subsequent crops in a sequence recorded the highest zinc content in grain (78 mg kg−1) and straw (75 mg kg−1) and application of zinc sulphate once at higher level (50 kg ha−1) for first crop alone (Maize) resulted in the highest total up take of zinc by grain and straw together (1289 g ha−1) and these were comparable among themselves. In respect of sunflower, application of zinc sulphate @ 12.5 kg ha−1 to every crop recorded the highest zinc content in seed (81 mg kg−1) and in stover (67 mg kg−1) and the highest zinc uptake of 431 g ha−1.

KEYWORDS

REFERENCES

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