Abstract
Five cycles of field experiments involving maize followed by sunflower were conducted during 1996-2001 in a clay loam soil at Agricultural College and Research Institute, Coimbatore. The results indicated that application of zinc sulphate @ 37.5 kg ha to first crop of maize followed by 12.5 kg ha¹ to all alternate sunflower crops increased the total yield of maize and sunflower together, showing beneficial resident effect of applied zine to previous crop, which received cumulatively 25% less zinc sulphate as compared to 12.5 kg ha-1 fo zinc sulphate applied to every crop in a sequence covering ten crops despite comparable yield were recorded among themselves. There was a build up of DTPA-Zn in the post harvest soil due to application of zinc sulphate, irrespective of levels, either to every crop or alternate crop over a period of time as against depletion of zinc observed in the treatments receiving only once and no zinc in the sequential experimentation.
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Claims 4
Claim · model-written summary
Applying zinc to maize and alternate sunflower crops increased combined crop yield.
- Taxon
- maize and sunflower
Helianthus annuus
Zea mayse0 - Treatment
- zinc sulphate @ 37.5 kg ha to first crop of maize followed by 12.5 kg ha¹ to all alternate sunflower cropse0
- Outcome
- total yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of zinc sulphate @ 37.5 kg ha to first crop of maize followed by 12.5 kg ha¹ to all alternate sunflower crops increased the total yield of maize and sunflower together”
Claim · model-written summary
The alternate crop schedule used 25% less zinc sulphate yet gave comparable yield to treating every crop.
Not reportedTaxonTreatment
Verbatim
e0“which received cumulatively 25% less zinc sulphate as compared to 12.5 kg ha-1 fo zinc sulphate applied to every crop in a sequence covering ten crops despite comparable yield were recorded among themselves.”
Claim · model-written summary
Repeated zinc sulphate application built up postharvest soil DTPA-Zn.
Not reportedTaxonComparator
Verbatim
e0“There was a build up of DTPA-Zn in the post harvest soil due to application of zinc sulphate, irrespective of levels, either to every crop or alternate crop over a period of time”
Claim · model-written summary
Soil zinc was depleted where zinc was applied once or not at all.
Not reportedTaxonComparator
Verbatim
e0“depletion of zinc observed in the treatments receiving only once and no zinc in the sequential experimentation.”
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